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- Path: senator-bedfellow.mit.edu!faqserv
- From: russ@shani.net (Russ Hersch)
- Newsgroups: comp.arch.embedded,comp.sys.intel,comp.robotics.misc,comp.realtime,sci.electronics.design,alt.comp.hardware.homebuilt,comp.answers,sci.answers,alt.answers,news.answers
- Subject: 8051 microcontroller FAQ
- Supersedes: <microcontroller-faq/8051_857391387@rtfm.mit.edu>
- Followup-To: poster
- Date: 12 Sep 1997 10:51:08 GMT
- Organization: none
- Lines: 3701
- Approved: news-answers-request@MIT.EDU
- Expires: 27 Oct 1997 10:50:49 GMT
- Message-ID: <microcontroller-faq/8051_874061449@rtfm.mit.edu>
- NNTP-Posting-Host: penguin-lust.mit.edu
- Summary: This article is a collection of information sources on the
- Intel 8051 family of microcontrollers (and variants).
- X-Last-Updated: 1997/09/11
- Originator: faqserv@penguin-lust.MIT.EDU
- Xref: senator-bedfellow.mit.edu comp.arch.embedded:23800 comp.sys.intel:135172 comp.robotics.misc:17945 comp.realtime:21811 sci.electronics.design:47745 alt.comp.hardware.homebuilt:32930 comp.answers:28026 sci.answers:7062 alt.answers:28881 news.answers:112098
-
- Archive-name: microcontroller-faq/8051
- Posting-Frequency: monthly
- Last-modified: September 11, 1997
-
- This article is a collection of information sources on the Intel 8051
- family of microcontrollers (and variants).
-
- The following topics are addressed:
-
- 0) Rantings and ravings (to make the FAQ zero-based)
-
- 1) ABOUT THIS FAQ
- 1.1) Who put this FAQ together?
- 1.2) How can I contribute to this FAQ?
- 1.3) What newsgroups will this FAQ be posted to?
- 1.4) May I distribute this FAQ or post it somewhere else?
- 1.5) How about FAQs on other microcontrollers?
-
- 2) ABOUT THE 8051
- 2.1) The 8051 microcontroller
- 2.2) 8051 Flavors
- 2.3) 16-bit 8051 parts
- 2.4) 8051 representatives and approximate prices
- 2.5) Common and New 80x51 variants
- 2.6) Advantages realized in implementing control applications on
- this family of microcontrollers
- 2.7) Getting started
- 2.8) Technical Questions and Answers
-
- 3) SOURCES OF INFORMATION ON THE 8051
- 3.1) FTP sites
- 3.2) Web pages
- 3.3) Mailing lists
- 3.4) BBSs
- 3.5) Help available!
-
- 4) 8051 PRODUCTS
- 4.1) Free languages and development tools
- 4.2) Free C compilers
- 4.3) Commercially available products
-
- 5) 8051 DOCUMENTATION
- 5.1) Periodicals
- 5.2) Books
- 5.3) Miscellaneous documentation
-
-
- 0) Rantings and ravings
-
- Disclaimer: Just so it is understood, the "rantings and ravings" are
- my rantings and raving. My readers are refined and sophisticated and
- would never rant or rave. I, on the other hand, sit in front of the
- TV in torn underwear and drink beer out of the bottle.
-
- =====> OK, I know this FAQ is long. Very long. Well... it's
- ridiculously long. If you are inconvenienced or strenuously object to
- the posting of this FAQ, please DON'T FLAME me or send me nasty mail.
- Just think what I have to go through. This FAQ takes a lot of my
- time, of which I have very little to spare. I'm open for suggestions.
- I've considered the following:
- - splitting it up into smaller parts
- - eliminating certain sections which may no longer be relevant -
- the web and search engines certainly seem to make a lot of this
- FAQ obsolete (or am I mistaken on this?)
- - not posting it to the newsgroups and just turning this
- whole mess into a [large] web page (the problem with this
- is that I don't have a web site)
- - forgetting about it all together and reminding my kids that I'm
- their father (if you all tell me to go packing, I'll gladly
- fold up shop and devote more time to family, friends, and
- personal hygiene)
- I would be happy to hear ideas on how this FAQ could be improved for
- the reader. If it makes MY job easier, then that's even better.
-
-
- OK, with that out of the way, let's get on with it...
-
-
- Well, it's finally here. A free C compiler for the 8051. Featured in
- Dr. Dobb's August 1997 issue, Andy Yuen's Retargetable Concurrent
- Small C (RCSC) is based on James E. Hendrix' lengendary Small C. A
- previous iteration of RCSC, Concurrent Small C was introduced in the
- August 1996 issue of Dr. Dobbs. With the release of this compiler,
- Andy Yuen is very likely to become a folk hero.
-
- So, why are you still reading this? The FAQ will wait! First download
- a copy of RCSC. You can get it from: http://www.ddj.com or
- ftp://ftp.mv.com/pub/ddj. Then go out and find a copy of Dr. Dobb's
- August 1997 issue.
-
- You'll still need to purchase either James E. Hendrix's "A Small C
- Compiler" (ISBN 0-13-814724-8) or the Dr. Dobb's Small C Compiler
- Resource CD. This of course means that the free C compiler isn't
- totally free, but then again, what is?
-
-
- If you'd like to start learning about microcontrollers, but the
- thought of finding all the parts and then building one scares you,
- take a look at the line of boards available from American Educational
- Systems. They have three boards: AES-51 (8051), AES-11 (68hc11), and
- AES-88 (8088). All three boards are built along the same lines and
- include RAM, ROM, LCD display, keypad, A/D, serial ports, digital I/O
- ports, and logic probe. Also included is a full bookshelf of
- documentation. The AES-51 comes with a hardware manual, language
- manual, and Intel's 8051 User's Manual (over 500 pages of reference
- material). The board has a built in BASIC-52 and monitor built into
- external ROM on board. The BASIC even includes commands for
- displaying on the LCD. These boards are ridiculously easy to use and
- program - you can get started experimenting right away.
-
- This is a perfect system for students and hobbyists. Even
- professionals will find this system useful as a prototyping tool and
- test bed. Highly recommended.
-
- For more information, contact:
- American Educational Systems
- 970 West 17th St.
- Santa Ana, CA 92706 USA
- (800)730-3232 or (714)550-8094 Fax: (714)550-9941
-
-
- SPJ Systems (Pune, India) has announced version 3.0 of their C
- compiler for the 8051. The major new feature of this version is
- support for the "bit" type. Although this version imposes some
- limitations on the use of this newly supported type, you can now use
- the bit manipulation capability of the 8051. One important benefit
- will be smaller code size and code which is easier to maintain and
- understand.
-
- A working demo of the compiler package, which includes the library
- sources and permits the compilation of small programs, is available
- from their web site.
-
- For questions or comments about the product, you can contact them at:
- SPJ SYSTEMS
- 114, Chitrashala Bldg.
- 562, Sadashiv Peth
- Pune, India
- Phone: 91-212-451607 Fax: 91-212-480285
- Email: spjs@giaspn01.vsnl.net.in
- Web: http://www.prime-digest.w1.com/spj
-
-
- Air Born Electronics in Australia has some nice project plans for the
- 8051 available on their web site. Point your browser at:
- http://www.airborn.com.au/
-
-
- MDL Labs offers the following BASIC language packages for the 8051:
- 1. BASIKIT--Integrated Programming Environment for BASIC-52
- and for MDL-BASIC-I, MDL-BASIC-P, and MDL-BASIC-D. BASIKIT
- includes a full-screen editor and permits writing programs
- with labels rather than line numbers.
- 2. MDL-BASIC-I and MDL-BASIC-P are supersets of the original
- BASIC-52, for the Intel 8052 and the Phillips PCB83C552,
- respectively. All bugs removed.
- 3. MDL-BASIC-D is a BASIC for the Dallas 87C530 which accesses
- all the features of the chip, including both serial ports,
- the Watchdog, and the power-saving features. The BASIC will
- address up to 512K of memory and will collect data into that
- memory via serial port interrupts. It runs faster at 25 MHz
- than compiled code on the 8052.
- MDL Labs
- 1073 Limberlost Court
- Columbus, OH 43235
- Tel/Fax: 614-431-2675
- Email: arl@infinet.com
-
-
- Students at the Universidade Federal de Santa Catarina, Brazil
- developed a "Remote Lab for the 8051". You send a machine code of the
- 8051 to a remote host (where there is 8051 board plugged in the PC)
- and receive the values of the registers. Study the 8051
- microcontroller, without buying a board. For more information:
- www.inf.ufsc.br/~jbosco/labvir.htm
- The Email of students are:
- Miguel <wf@ambiente.com.br>
- Cleber <cleber@inf.ufsc.br>
-
-
- Hans Schou write to inform that the USB organization now has their
- own homepage: http://www.usb.org (was http://www.teleport.com/~usb).
- Hans is also willing to help out with problems using the 8051. His
- new email address is: chlor@schou.dk
-
-
- TCG (in Taiwan) has introduced two new products. One product is
- 32K-byte EPROM Emulator and the other is AT89C2051/1051 programmer
- with limited emulation capability. These products feature platform
- independence. You can use PC, Mac, Unix workstation, or even a dumb
- terminal. All the necessary commands are built into the on-board
- controller. For more information, check out these web sites:
- http://www.yp.at-taiwan.com/~com00121
- http://www.hth.com
- For more information:
- TCG
- 11 Ally22 Ln21 Pei-Ta Rd., Hsin-Chu City, Taiwan, R.O.C.
- (886)3-532-7372 Fax: 886-3-531-7162
- Email:ch.bbs@csie.nctu.edu.tw
-
-
- Take care,
-
- Uncle Russ
-
-
- 1) ABOUT THIS FAQ
-
- 1.1) Who put this FAQ together?
-
- I was prompted to put this FAQ together in response to my own
- frustration in searching for information, and to the constant
- occurrence of requests for information on this subject in various
- newsgroups. Hopefully others won't need to go through what I did.
-
- Normally, I spend all day programming in assembler or C on an IBM PC.
- With my hobbyist hat on I decided to try my hand at a little
- microcontroller project design. When it came time to start, I had no
- idea what to do. I had nothing to start with - no assembler, no
- programming language, no simulator. I cobbled together a simulator
- to help me learn about the workings of the chip. It's not being made
- available to the public since I'm afraid the simulator isn't very
- good. It was for my own use, so the user interface (there is none)
- really sucks eggs.
-
- I decided to search the net for information on the 8051. This list
- was compiled the hard way, logging onto every anonymous ftp site I
- could find and looking around. I also used Archie, other FAQs and
- lists, and every reference to the 8051 that appeared in the various
- news groups. It took a long time till stuff finally started popping
- up. I saved all of my notes and the result was the first version of
- this FAQ. Responses have been pouring in, and the result is a much
- more complete and thorough FAQ.
-
-
- 1.2) How can I contribute to this list?
-
- I please ask that if you have any suggestions or additions, or you
- would like to correct any of the information contained herein, please
- send me a note.
- My Email address is: russ@shani.net
- My Snail-Mail address is:
- Russ Hersch
- HaVradim 11
- Ginot Shomron
- ISRAEL
-
- The list of individuals who have sent suggestions and encouragement
- is endless. I hope it suffices to say "Thank you to all who have
- contributed to this FAQ - we all appreciate it."
-
- Special thanks to recent contributors:
- Pramod Ramade (SPJ Systems)
- Mark Meyer (American Educational Systems)
- Michael Markowitz (EDN magazine)
- Enrique Viseras
- Philippe Techer (Virtual Micro Design)
- Richard Lane
- Ray Lavender (MDL Labs)
- Hans Schou
- Alfred Arnold
- CH Tsai (TCG, Taiwan)
-
- I hope that those of you who know of interesting items for the 8051
- will share with everyone by contributing to this list. Piles of
- stuff is turning up thanks to everyone's help.
-
- If you are a manufacturer and have a web site, ftp site, or BBS
- available that supports the 8051, please let me know by EMail so that
- I can add it to this FAQ. Also, please feel free to update me on new
- products.
-
-
- 1.3) What newsgroups will this FAQ be posted to?
-
- This FAQ will be posted to the following newsgroups:
- comp.sys.intel
- comp.realtime
- comp.robotics
- comp.lang.forth
- sci.electronics
- These newsgroups often contain discussions, announcements, or
- information on the 8051. Check them out from time to time.
-
- The schedule for posting will be once a month. I can't promise that
- it will be on time, but I hope to post it on the 26th of each month.
-
- You might also want to check out the following newsgroups, since they
- quite frequently have discussions about the 8051 and other
- microcontrollers:
- comp.arch.embedded
- alt.comp.hardware.homebuilt
-
- A bit farther afield, but still of possible interest:
- comp.lang.misc
- comp.ai.fuzzy
- comp.dsp
- sci.engr.control
- sci.engr.semiconductors
-
-
- 1.4) May I post this FAQ to my local BBS?
-
- I am putting no restrictions on the use of this FAQ except - It must
- be distributed in its entirety with the copyright notice, and no
- financial gain may be realized from it. After all, I have spent, and
- continue to spend, a lot of time on this. The only thing that I
- intend to gain from it is more information on the 8051, and getting
- to know my fellow 8051 groupies better.
-
- For this reason I have appended a copyright statement to the end of
- this FAQ. I feel pretty silly doing this, but I just want to protect
- myself. The copyright does not limit the use of this list for
- noncommercial purposes. I hereby give my permission to one and all
- to pass this list around and post it wherever you want - as long as
- it is not for financial gain.
-
- Thank you.
-
-
- 1.5) How about FAQs on other microcontrollers?
-
- If anyone wishes to start a FAQ on another microcontroller, please
- feel free to copy the format of this FAQ - I don't intend on
- copyrighting the look and feel ;-). With a common format, we will
- all benefit when trying to find information on a particular
- microcontroller.
-
-
- Other Microcontroller FAQs
-
- Subject: PIC microcontrollers
- Newsgroups: <no longer posted to newsgroups>
- Web page: http://digiserve.com/takdesign
- Maintainer: Tom Kellett
- Email: Tom@takdsign.demon.co.uk
-
- Subject: 68hc11 microcontrollers
- Newsgroups: comp.realtime
- comp.robotics
- sci.electronics
- Archive: rtfm.mit.edu : <plus all mirror sites>
- /pub/usenet/comp.answers/microcontroller-faq/68hc11
- /pub/usenet/sci.answers/microcontroller-faq/68hc11
- /pub/usenet/news.answers/microcontroller-faq/68hc11
- Maintainer: Robert Boys - Ontario, Canada
- Email: rboys@best.com
- Russ Hersch (maintainer emeritus :-)
-
- Subject: Microcontroller primer and FAQ
- Newsgroups: comp.sys.intel
- comp.arch.embedded
- comp.robotics
- sci.electronics
- alt.comp.hardware.homebuilt
- Archive: rtfm.mit.edu : <plus all mirror sites>
- /pub/usenet/comp.answers/microcontroller-faq/primer
- /pub/usenet/sci.answers/microcontroller-faq/primer
- /pub/usenet/news.answers/microcontroller-faq/primer
- Maintainer: Russ Hersch
- Email: russ@shani.net
-
-
- Additional FAQs of interest
-
- Subject: I2C protocol
- Newsgroups: sci.electronics
- alt.hardware.homebuilt
- comp.robotics
- comp.protocols.misc.
- Comments: The I2C bus is a simple 2 wire serial interface
- developed by Philips. A number of 8051 variants as
- well as several peripherals include I2C support.
- Maintainer: Vincent Himpe
- Email: Vincent.Himpe@ping.be
-
- Subject: Robotics
- Newsgroups: comp.robotics
- Maintainer: Kevin Dowling
- (412)268-8830
- Email: nivek@ri.cmu.edu
- Smail: Carnegie Mellon University
- The Robotics Institute
- Pittsburgh, PA 15213
-
- Subject: Electronics
- Newsgroups: sci.electronics
- Comments: There are a number of FAQs available in this newsgroup
- on various subjects. Among some of the subjects covered
- are: LCDs, stepper motors, etc.
-
- FAQ subject: Real-time
- Newsgroups: comp.realtime, comp.answers, news.answers
- Archive: rtfm.mit.edu : pub/usenet/comp.realtime
- Maintainer: Mark Linimon
- Lonesome Dove Computing Services
- Roanoke, Virginia
- Email: linimon@nominil.lonesome.com.
-
- Subject: Motorola 68K microprocessor line
- Newsgroups: comp.sys.m68k
- Comments: without a doubt, one of the finest FAQs ever written
- (well, of course Bob paid me to say this ;-)
- Archive: bode.ee.ualberta.ca : pub/motorola/general
- ftp.luth.se : /pub/misc/motorola/faq
- file name of archive is m68kfaq?.zip (? is version)
- Maintainer: Robert Boys - Ontario, Canada
- Email: rboys@best.com
-
-
- For more detailed information on various 8051 microcontroller parts,
- see the article posted to comp.robotics and sci.electronics which
- provides a tabular cross reference of features and pin counts on a
- wide range of microcontrollers (including the 8051 family). This
- list was compiled and is being maintained by Roger Nelson
- <rnelson@wsuaix.csc.wsu.edu>.
-
- For more information on various microcontrollers and their features,
- refer to the Microcontroller primer and FAQ listed above.
-
-
- 2) ABOUT THE 8051
-
-
- 2.1) The 8051 microcontroller
-
- The 8051 is an 8 bit microcontroller originally developed by Intel in
- 1980. It is the world's most popular microcontroller core, made by
- many independent manufacturers (truly multi-sourced). There were 126
- million 8051s (and variants) shipped in 1993!!
-
- A typical 8051 contains:
- - CPU with boolean processor
- - 5 or 6 interrupts: 2 are external
- 2 priority levels
- - 2 or 3 16-bit timer/counters
- - programmable full-duplex serial port
- (baud rate provided by one of the timers)
- - 32 I/O lines (four 8-bit ports)
- - RAM
- - ROM/EPROM in some models
-
- The 8051 architecture is a tad bizarre, but then so are the
- architectures of most microcontrollers due to their specialization
- (check out the PIC for creativity - for that matter, take a look at
- any RISC chip). One vexing problem with the 8051 is its very
- non-orthogonal instruction set - especially the restrictions on
- accessing the different address spaces. However, after some time
- programming the chip, you can get used to it - maybe even appreciate
- it.
-
- One strong point of the 8051 is the way it handles interrupts.
- Vectoring to fixed 8-byte areas is convenient and efficient. Most
- interrupt routines are very short (or at least they should be), and
- generally can fit into the 8-byte area. Of course if your interrupt
- routine is longer, you can still jump to the appropriate routine from
- within the 8 byte interrupt region.
-
- The 8051 instruction set is optimized for the one-bit operations so
- often desired in real-world, real-time control applications. The
- boolean processor provides direct support for bit manipulation. This
- leads to more efficient programs that need to deal with binary input
- and output conditions inherent in digital-control problems. Bit
- addressing can be used for test pin monitoring or program control
- flags.
-
-
- 2.2) 8051 Flavors
-
- The 8051 has the widest range of variants of any embedded controller
- on the market. The smallest device is the Atmel 89c1051, a 20 Pin
- FLASH variant with 2 timers, UART, 20mA. The fastest parts are from
- Dallas, with performance close to 10 MIPS! The most powerful chip is
- the Siemens 80C517A, with 32 Bit ALU, 2 UARTS, 2K RAM, PLCC84
- package, 8 x 16 Bit PWMs, and other features.
-
- Among the major manufacturers are:
- AMD Enhanced 8051 parts (no longer producing 80x51 parts)
- Atmel FLASH and semi-custom parts
- Dallas Battery backed, program download, and fastest variants
- Intel 8051 through 80c51gb / 80c51sl
- ISSI IS80C51/31 runs up to 40MHz
- Matra 80c154, low voltage static variants
- OKI 80c154, mask parts
- Philips 87c748 thru 89c588 - more variants than anyone else
- Siemens 80c501 through 80c517a, and SIECO cores
- SMC COM20051 with ARCNET token bus network engine
- SSI 80x52, 2 x HDLC variant for MODEM use
-
- Advanced Micro Devices (AMD)
-
- AMD was one of the first manufacturers of enhanced variants
- including such features as: dual data pointers, slave interface
- with arbitration unit, dual port RAM, FIFO buffers, and others.
- They are now out of the 8051 business.
-
-
- Atmel
-
- The smallest current device is the ATMEL 89c1051, a 20 Pin FLASH
- variant with 2 timers, UART, 20mA. ATMEL was the first with
- standard pinout FLASH, and with more program cycles than other
- custom pinout FLASH. These parts compete with OTP and MASK
- product on price, but eliminate inventory problems and the hidden
- costs of OTP development. This will put real pressure on
- "vanilla" micros like PIC and ST6.
-
-
- Dallas Soft Microcontrollers - DS5000(T), DS5001(T), DS2250(T)
-
- The Dallas Soft Microcontrollers have standard 8051 cores with
- on-chip non-volatile RAM instead of ROM. This gives the user the
- ability to easily alter the system and is perfect for data
- logging. These processors are available in both chip and module
- solutions. Among the features included in this family of
- products:
- - on-chip non-volatile RAM
- - loader in ROM for downloading programs (eliminates the hassle
- of EPROM erase/program/install cycle)
- - built in real time clock option
- - watchdog timer
- - software security (program and data encryption)
-
- The DS500x is a standard 40 pin DIP package (well, mostly
- standard, it is really a BOX which is about double the height of a
- normal chip). The DS225x is a SIP version which is functionally
- identical to the DS5000 but usually a bit less expensive.
-
- The nice thing about having the RAM on-chip, is that the I/O ports
- are unaffected. When the RAM is configured as CODE memory, the
- DS5000 behaves exactly as a single-chip 8051. The NV-RAM is
- static with a built-in lithium battery, and has no limitations on
- the number of writes. You can download your code as many times as
- you like without damaging the device. The DS5000 also includes a
- loader in ROM, which permits you to bootstrap code into the RAM to
- get underway. The loader and on-chip RAM have an encryption
- feature with which you can protect your code from being read back
- from the device if you wish.
-
-
- Dallas High-Speed Micros - DS80c320, DS87c520, DS87c530
-
- Real barn-burners - performance up to 10 MIPS! Dallas was the
- first to speed up the core. Wasted clock and memory cycles have
- been removed using a redesigned processor core. As a result,
- every 8051 instruction is executed up to 3 times faster than the
- original for the same crystal speed. Clock speeds from DC to
- 33MHz!
-
- High performance doesn't just mean speed. High integration gives
- the user 2 full-duplex hardware serial ports, 13 total interrupt
- sources (6 external), watchdog timer, power management, power-fail
- reset, and other features.
-
-
- Intel MCS-51
-
- Introduced in 1980, it has become the industry standard for
- embedded control. Intel offers a wide variety of 8051 versions
- with different configurations of on-board EPROM/ROM. Also low
- power, high integration, and specialized parts are also offered.
-
-
- OKI
-
- OKI makes an 85c154 piggyback - an 8751 but with an EPROM socket
- on top! Great with an EPROM emulator.
-
-
- Philips
-
- Philips has more 8051 variants than anyone else. Among the
- derivatives that they have: 40MHz, 24 pin skinny DIP, low
- voltage, quad flat pack (QFP) versions for saving board space,
- OTP, I2C bus, and so on.
-
- The c5xx line features high integration, with many built-in
- features including built-in EMI/RFI suppression.
-
- The c7xx series are very low-end, inexpensive micros. They are
- offered with less memory (1k, 2k, etc.) and fewer features. In
- fact the 83c750 sells for only $1 in very high OEM volumes.
-
-
- Siemens sab80c517a
-
- The 80c517a is one of the most powerful 8051 variants available.
- It features high clock speed (40 MHz), and high integration with
- 32 Bit ALU, 2 UARTS, 2K RAM, PLCC84 package, 8x16 bit PWMs, and
- more.
-
-
- Standard Microsystems Corporation SMC COM20051
- The COM20051 is an integrated microcontroller and network
- interface which features:
- - high performance and low cost
- - based on popular 8051 architecture
- - drop-in replacement for 80C32 PLCC
- - network supports up to 255 nodes
- - powerful network diagnostics
- - maximum 512 byte packets
- - duplicate node ID detection
- - self-configuring network protocol
- - retains all 8051 peripherals including Serial I/O and
- 2 Timers
- - utilizes ARCNET(R) Token Bus Network Engine
- - requires no special emulators
- - 5 Mbps to 156 Kbps data rate
- - network interface supports RS-485, twisted pair,
- coaxial, and fiber optic interfaces
- - "receive all" mode allows any packet to be received
-
-
- Silicon Systems Inc. SSI73M2910/2910A
-
- The SSI73M2910 is a high performance microcontroller designed for
- modem and communications applications.
- - 8052 Compatible Instruction set.
- - 34 MHz Operation @ 4.5 - 5.5V
- - 44 MHz Operation @ 4.75 - 5.5.V (2910A)
- - 22 MHz Operation @ 3.3 - 5.5.V
- - HDLC Support Logic (Packetizer, 16 and 32 CRC, zero ID)
- - 24 pins for user programmable I/O ports
- - 8 pins programmable chip select logic or I/O for memory mapped
- peripherals eliminating glue logic
- - 3 external interrupt sources (programmable polarity)
- - 16 dedicated latched address pins
- - Multiplexed latched/address bus
- - Instruction cycle time identical to 8052
- - Buffered oscillator (or OSC/2) output pin
- - 1.8432 MHz UART clock available
- - Bank select circuitry to support up to 128K of external
- program memory
- - 100-Lead TQFP package available for PCMCIA applications
- - Also available in 100-Lead QFP package
-
-
- 2.3) 16-bit 8051 parts
-
-
- A joint project between Intel and Philips Semiconductors has resulted
- in two new excting products - 16 bit 8051s! Due to a disagreement
- between the parties, they each went their separate ways. Intel
- developed the MCS-251, which was originally called the ZX (this name
- can still be found on one of the Intel slide shows). Philips came
- out with the eXtended Architecture (XA) line.
-
- The Intel MCS-251 is a drop-in replacement for the 8051 (at least,
- after programming the mode control bits first), and is also binary
- compatible. The XA is more of a 16 bit micro which also happens to
- be source code compatible. One can argue the merits of which
- approach is better.
-
- Pin compatible parts allow instant performance upgrades for existing
- designs, and the binary compatibility truly preserves users
- investment in code and tools. By staying firmly in the 80x51 camp,
- Intel allows users transparent access to an enormous horsepower
- range. To further improve throughput in numerically intensive areas,
- users can use INTEGER, LONGINT, and FLOAT libraries written for the
- MCS-251. The Philips XA is not a drop-in replacement for the 8051.
-
- Binary code compatibility is nice, you can move right up to a more
- powerful engine without having to bust a gut (We all know the Intel
- binary compatible success story with their 80x86 microprocessors).
- But if you're working on a new design, how necessary is binary
- compatibility? If you're just looking for a souped up '51, Dallas
- already has the 320. If you need the advanced features, you'll need
- to recompile or rewrite your software anyhow. You'll also have to
- drag along some compatibility baggage with you in order to use the 16
- bit operations - these are preceded by an escape code (A5H), the only
- instruction not used in the 8051 instruction set.
-
- With source code compatibility, you have to recompile your code (with
- a new set of development tools), since the instruction set has been
- recrafted to allow the biggest bang for the buck. This process isn't
- 100% transparent, but then again, binary compatibility isn't either.
-
- If you're upgrading an existing design, the 251 is probably your only
- reasonable choice (although you might also want to consider the
- Dallas 320). On new designs, you'll have a tough decision to make.
- Whichever path you choose to take, the 8051 will never be the same
- again.
-
-
- Intel MCS-251
-
- The Intel MCS-251 is 100% binary and pin compatible with the 8051,
- but with a 5-15 times boost in horsepower. This is achieved by a
- six fold gain in bus cycles, and further hardware improvements to
- avoid wasted bus cycles.
-
- Further performance gains are possible by recoding critical
- sections to take advantage of the new features: powerful 8/16/32
- bit instructions, flexible 8/16/32 registers, 16MB linear address
- space, 16-bit stack pointer, enhanced BIT manipulations, and
- improved control instructions. In addition to extra 16/32 bit
- instructions, the 251 includes 40 registers with Accumulator and
- Index functions overlayed as 16x8, 16x16, 10x32.
-
- Should we expect a 351 in the future. How about a 451? Or maybe
- a Penti-uC?
-
-
- Philips 8051XA
-
- By tossing compatibility out the window, Philips was able to
- develop a true 16 microcontroller while at the same time
- preserving the basic 8051 instruction set (source). The benefits
- of this break with tradition result in a chip that has dual 16MB
- address spaces (data and code), multitasking support with task
- protected memory segments, a separate SFR bus, fast context
- switching, and optimized code efficiency. Other features include:
- hardware divide and multiply (over 100 times faster than an 8051),
- 32 vectored interrupts, 16 hardware exceptions, and 16 trap
- instructions.
-
-
- 2.4) 8051 representatives and approximate prices (in USD $)
-
- There are many, many varieties of 8051 out there. This is only a
- small sampling of typical prices on Intel chips.
-
- 8031 (128 bytes RAM)...................................3.59
- 80C31 (CMOS version of previous).......................6.95
- 8051AH (256 bytes RAM).................................6.95
- 8051AHBASIC (w/Basic interpreter built in)............29.95
- 8751 (4K EPROM, 128 bytes RAM)........................26.95
- 87C51 (CMOS version of previous)......................39.95
-
-
- 2.5) Common and New 80x51 variants
-
- Intel has announced that 8052AH-BASIC has reached its EOL (end of
- life) and is not any more in production. Resellers may still have
- some chips in stock. However, both source and object code is
- available in many ftp-sites (and Intel BBS) and can be loaded into
- any 8052-compatible internal ROM memory (or external ROM, but then
- PROG and DMA cannot be used).
-
- At least few years ago, MicroMint Inc. (4 Park St, Vernon,
- CT 06066, USA) was selling their own 80C52-BASIC at USD 25, speed DC
- 12 MHz, CMOS.
-
- <Thanks to Eero-Pekka Mand>
-
-
- Thanks to Jim Granville of Mandeno Granville Electronics, Ltd. for
- the following nice summary.
-
- Key:
- PCA programmable counter array
- LV low voltage
- PWM pulse width modulation
- CC capture/compare
- UPI Universal Peripheral Interface (Philips)
-
- Variant Pins Mfg RAM CODE XRAM Notes (LV - low voltage)
- ---------------------------------------------------------------------
- MCS251 40 Intel 1K 16K 0 16 Bit 80x51FX! Prelim
- 80C509L 100qf Siemens 256 64Kx 3K ALU,PWM,CC,2UART,10bA/D
- 80C517A 84 Siemens 256 64Kx 2K ALU,8PWM,CC,2UART,10bA/D
- 80C537A 84 Siemens 256 32K 2K ALU,8PWM,CC,2UART,10bA/D
- 80537 84 Siemens 256 64Kx 0 ALU,8PWM,CC,2UART,8bA/D
- 80517 84 Siemens 256 8K 0 ALU,8PWM,CC,2UART,8bA/D
- 73D2910 100qfp SSI 256 128Kx 0 80C52+Ports+HDLC
- 80C535A 68 Siemens 256 64Kx 1K 515+10bA/D,1K XRAM,BRG,OWD
- 80CE558 80qfp Philips 256 64Kx 768 Enhanced 80C552, Sep i2c, RSO
- 80C515A 68 Siemens 256 32K 1K 515+10bA/D,1K XRAM,BRG,OWD
- 80535 68 Siemens 256 64Kx 0 Timer2CaptComp 6ports 8/10bA/D
- 80515 68 Siemens 256 8K 0 Timer2 CaptComp 4 ports 8b A/D
- 80C535 68 Siemens 256 64Kx 0 Timer2 CaptComp 5 ports 8b A/D
- 80C51GB 68 Intel 256 64Kx 0 8051FA+PCA, 8b A/D, SPI
- 87C51GB 68 Intel 256 8K 0 8051FA+PCA, 8b A/D, SPI
- 80C592 68 Philips 256 64Kx 256 552-i2c+CAN+XRAM
- 87C592 68 Philips 256 16K 256 552-i2c+CAN+XRAM
- 87C598 80 Philips 256 32K 256 552-i2c+CAN+XRAM
- 80C552 68 Philips 256 64Kx 0 10b A/D, i2c, CaptComp, PWM
- 87C552 68 Philips 256 8K 0 10b A/D, i2c, CaptComp, PWM
- 80C562 68 Philips 256 64Kx 0 8b A/D, i2c, CaptComp, PWM
- SABC505C 44 Siemens 256 64Kx 256 8bA/D,XRAM,OWD,CAN V2B, Xt2
- SABC504 44 Siemens 256 64Kx 256 10bA/D,XRAM,OWD,DC Motor PWM
- 87C451 68 Philips 128 4K 0 7 Ports, 1 Handshake
- 80C451 68 Philips 128 64Kx 0 7 Ports, 1 Handshake
- 87C453 68 Philips 256 8K 0 7 Ports, 1 Handshake
- 83CL580 56,64 Philips 256 6K 0 LV 8052+ADC+i2c+More INTs,WDOG
- 80C320 40 Dallas 256 64Kx 0 FAST, 2 DPTR 2 UART VRST
- 80C310 40 Dallas 256 64Kx 0 Simpler 80C320 e62.5Mhz
- 87C520 40 Dallas 256 16K 1K 16K OTP enhanced 80C320
- 80C51FX 40 Intel 256 64Kx 0 80C58i+PCA,AsRST
- 87C51FA 40 Intel 256 8K 0 8052+PCA,Enh Serial Automotive
- 87C51FB 40 Intel 256 16K 0 8052+PCA,Enh Serial Automotive
- 87C51FC 40 Intel 256 32K 0 8052+PCA,Enh Serial Automotive
- 8XC51FB 40 Philips 256 16K 0 87C51FB with ALE RFI mode
- 87C51FXL 40 Intel 256 32K 0 3.3v 80C51FC
- 80C152JD 68 Intel 256 64Kx 0 HDLC/SDLC Serial
- 80C152 48 Intel 256 64Kx 0 HDLC Serial
- 8044 40 Intel 192 64Kx 0 RUPI Serial
- 80C575 40 Philips 256 64Kx 0 8052+PCA,AnalogComp,WDOG,RSTLo
- 87C575 40 Philips 256 8K 0 8052+PCA,AnalogComp,WDOG,RSTLo
- 80C576 40 Philips 256 8K 0 8052+PCA,UPI,A/D,PWM,WDOG,VRSTLo
- 87C576 40 Philips 256 8K 0 8052+PCA,UPI,A/D,PWM,WDOG,VRSTLo
- SABC501 40 Siemens 256 64Kx 0 40MHz Enhanced 8052 U/D
- SABC502 40 Siemens 256 64Kx 256 8052+XRAM+8DP+WD+BRG+OWD
- 80C528 40 Philips 256 64Kx 256 8052+Wdog, XRAM
- 87C528 40 Philips 256 32K 256 8052+Wdog, XRAM
- 89CE528 44 Philips 256 32KF 256 Flash 528
- 87C524 40 Philips 256 16K 256 16K 87C528
- 80C550 40 Philips 128 4K 0 8b A/D WDog
- 80CL781 40 Philips 256 64Kx 0 LV 8052, More INTs, WDOG
- 83CL781 40 Philips 256 16K 0 LV 8052, More INTs, WDOG
- 80CL782 40 Philips 256 64Kx 0 LV, faster 781
- 89S8252 40.44 Atmel 256 10KFE 0 FLASH, 8K+2KEE, WDOG, SPI
- 89C55 40.44 Atmel 256 20KF 0 FLASH, Fast,LV 87C52+20K
- 89C52 40.44 Atmel 256 8KF 0 FLASH, Fast,LV 87C52
- 87C54 40 Intel 256 16K 0 16K 87C52i
- 87C58 40 Intel 256 32K 0 32K 87C52i
- 87C52 40 Intel 256 8K 0 8052+U/D+OscO+4Li
- 80C154 40 Matra 256 64Kx 0 Enhanced 8052 (also OKI)
- 83C154D 40 Matra 256 32K 0 Enhanced 8052
- 83C154 40 OKI 256 16K 0 Enhanced 8052
- 80C654 40 Philips 256 64Kx 0 i2c
- 87C652 40 Philips 256 8K 0 i2c
- 87C654 40 Philips 256 16K 0 i2c
- 83CE654 44qfp Philips 256 16K 0 i2c, low RFI 654
- DS5000 40 Dallas 128 32KR 32K 80x51 Secure+NVsupport,BootLdr
- DS2250 40sim Dallas 128 32K 32K 5000, in SIMM package
- DS5001 80qfp Dallas 128 64Kx 64K Enhanced DS5000, RPC BatSw
- 80C851 40 Philips 128 64Kx 0 8051+256B EEPROM
- 83C852 6 Philips 256 6K 0 ALU,2K EEPROM SmartCard,Die
- 8052 40 All 256 64Kx 0 8051+Timer2
- 8752 40 Intel 256 8K 0 8051+Timer2
- 80C52 40 Siemens 256 64Kx 0 8051+Timer2,Philips,Oki,Matra
- 88SC54C 8 Atmel 256 64Kx 512 8052+PublicKey,prelim
- 80CL410 40 Philips 128 64Kx 0 LV, More INTs i2c-UART
- 80CL31 40 Philips 128 64Kx 0 LV, More Ints 80x51
- 80CL610 40 Philips 256 64Kx 0 LV, More INTs i2c-UART
- 83CL411 40 Philips 256 64Kx 0 80CL31 with 256 RAM, No T2
- 89C51 40.44 Atmel 128 4KF 0 FLASH,Fast,LV 87C51
- 8751 40 All 128 4K 0 Core processor,UART,Tmr0,Tmr1
- 87C51 40 All 128 4K 0 Core processor,UART,Tmr0,Tmr1
- 8031 40 All 128 64Kx 0 Core processor,UART,Tmr0,Tmr1
- 8051 40 All 128 4K 0 Core processor,UART,Tmr0,Tmr1
- 80C31L 40 Matra 128 64Kx 0 LV 80x51
- 87C752 28 Philips 64 2KE 0 87751+ A/D, PWM
- 87C749 28 Philips 64 2KE 0 87C752 - i2c
- 87C751 24 Philips 64 2KE 0 Small size, bit i2c
- 87C748 24 Philips 64 2KE 0 87C751 - i2c
- 87C750 24 Philips 64 1KE 0 Small size
- 89C2051 20 Atmel 128 2KF 0 20Pin 89C51,+AnaComp+LED
- 89C1051 20 Atmel 64 1KF 0 20Pin 2051 -uart,timer1
-
-
- 2.6) Advantages realized in implementing control applications on this
- family of microcontrollers
-
- Wildly popular - readily available and widely supported, a full range
- of free and commercial support products is available
-
- Fast and effective - the architecture correlates closely with the
- problem being solved (control systems), specialized instructions mean
- that fewer bytes of code need to be fetched and fewer conditional
- jumps are processed
-
- Low cost - high level of system integration within one component,
- only a handful of components needed to create a working system
-
- Wide range - ONE set of tools covers the greatest horsepower range
- of any microcontroller family, other suppliers handle a number of
- DIFFERENT and INCOMPATIBLE (and often single-sourced) cores to cover
- the same power range as the 80x51, the 8051 provides a real cost
- savings in tools, training, and software support
-
- Compatibility - opcodes and binaries are the SAME for all 80x51
- variants (unlike most other microcontroller families)
-
- Multi-sourced - over 12 manufacturers, hundreds of varieties,
- something for everyone with the security of ready availability
-
- Constant improvements - improvements in silicon/design increase speed
- and power annually, 16 bit models coming from several manufacturers,
- low cost skinny DIP models now available
-
-
- 2.7) Getting started
-
- If you are interested in getting started with the 8051, you will need
- to concern yourself with getting the appropriate hardware and
- software to develop your system.
-
- A good start would be to pick up a couple of books on the subject.
- Two really great books for beginners are "The Microcontroller Idea
- Book" by Jan Axelson (Lakeview Research) and "Programming and
- Interfacing the 8051 Microcontroller" by Sencer Yeralan and Ashutosh
- Ahluwalia (Addison Wesley). Both books contain complete plans for
- microcontroller boards/systems if you plan on rolling your own. The
- Yeralan/Ahluwalia books also contains a diskette with just about all
- of the software that you'll need to get started progamming for the
- 8051 (assembler, simulator, etc). These books also have many circuit
- and code examples and are very useful for the beginner (I'm going to
- need an extra copy of each for reading in the bathroom :-).
-
-
- Which software you choose is mostly a matter of personal preference,
- how much time you have to invest, how much money you have to invest,
- and what you want to accomplish. Serious work can be accomplished
- using much of the free software listed in this FAQ, however in most
- cases technical support is unavailable. Registering shareware, or
- buying a mainstream commercial package gives you backup and support
- and helps you get going much faster.
-
- If you are a hobbyist or student, and would like to program in C, I
- would recommend looking at the Dunfield Development System. I use
- this package and it is a powerful package for only $100. It includes
- a full suite of development tools including C compiler, assembler,
- linker, and much more. A hardware-resident simulator/emulator is
- available for an additional $50. Another C compiler package from
- Micro Computer Control provides similar capabilities for the same
- price.
-
- A wide range of development options exists for all budgets and
- purposes. One convenient way to start is the Ceibo/Philips DS-750
- development system, based on the 80c75x (a scaled down 8051 variant).
- The "emulator" board programs the chips (so you won't need an EPROM
- programmer and the debugger has a user interface much like Borland's
- Turbo Debugger.
-
- The development system that I use is based on the Dallas DS5000. The
- nice thing about the DS5000 is that you can upload your programs
- directly to the chip (no EPROM needed!). The Dunfield package
- provides excellent support for this chip, including plans for
- building a "pseudo-ice". With this setup, all you need to do is
- upload your program, and debug (emulate) on the target hardware.
- This setup is highly recommended.
-
-
- One other possibility is the 8052AH-BASIC chip. With a Basic
- interpreter built in, you have an interactive development system when
- attached to your PC. Jan Axelson's book gives complete coverage on
- this chip, including plans to build your own system, programming in
- Basic, and interfacing to various peripherals and devices.
-
-
- What might be the easiest way to get started, is by buying a complete
- development package. The AES-51 from American Educational Systems is
- a good example. This package comes complete with everything you need
- to get started and do real work. The microcontroller board has just
- about every peripheral you'll ever need built right in (LCD, keypad,
- A/D, D/A, I/O, etc) and comes with a built-in monitor and BASIC. Also
- included is a shelf full of tutorial and reference books and a
- diskette with the required support software for your PC. For less
- than $300, you get a complete and professionally designed and
- packaged educational tool. AES also has two other boards (based on
- the 68hc11 and 8088) which have the same basic appearance and
- functionality.
-
-
- 2.8) Technical Questions and Answers
-
- Q: Why are ports P0 and P2 unavailable for I/O when using external
- memory?
-
- A: The output drivers of ports 0 and 2, and the input buffers of
- port 0, are used to access external memory. Port 0 outputs the
- low byte of the external memory address, time-multiplexed with
- the byte being read/written. Port 2 outputs the high byte of the
- external memory address when the address is 16 bits wide.
- Otherwise, the port 2 pins continue to emit the P2 SFR contents.
- Therefore, when external memory is being used, ports 0 and 2 are
- unavailable for their primary use as general I/O lines.
-
-
- Q: Is there anything I can do to use these ports for I/O when using
- external memory?
-
- A1: Not really.
-
- A2: If you really want to make your life miserable, you can try to
- use P2 for output when it isn't being used for memory access.
- The contents of the SFR latch for port 2 are not modified during
- the execution of a Data Memory fetch cycle on the Expanded Bus.
- If an instruction requiring a cycle on the Expanded Bus is not
- followed by another instruction requiring a cycle on the Expanded
- Bus, then the original contents of the port 2 SFR latch will
- appear during the next machine cycle. That is, when PSEN, RD and
- WR are all inactive, you can use port 2 for output (check the
- timing charts in the data book). The chip will emit the contents
- of the P2 SFR at that time. Do you REALLY want to bother with
- this though?
-
- A3: By including the external RAM "on-chip", the Dallas DS5000 makes
- these ports available for I/O. The SLIC E2 from Xicor does the
- same thing for other 8051 parts.
-
- A4: If you really need the extra I/O ports, there are number of 8051
- variants that have additional ports. Philips and Siemens are two
- such manufacturers that have these parts in their product lines.
-
-
- Q: I'm outputting a 1 to a pin on port 0, but I'm not getting a 1
- out. If I use a pin on port 1 instead, it works fine. What am I
- doing wrong?
-
- A: Port 0 has open drain outputs. Ports 1, 2, and 3 have internal
- pullups. What does this mean? See the next question and answer.
-
-
- Q: Port 0 has open drain outputs. Ports 1, 2, and 3 have internal
- pullups. What does this mean, and why should I care?
-
- A: When used as outputs, all port pins will drive the state to which
- the associated SFR latch bit has been set. Except for port 0,
- which will only drive low (not high). When a 0 is written to a
- bit in port 0, the pin is pulled low (0). But, when a 1 is
- written to a bit in port 0, the pin goes into a high impedance
- state - or in other words, "disconnected", no value. To be able
- to get a 1 as output, you need an external pullup resistor to
- pull up the port (to 1) when the port is in its high impedence
- state. Typical values for pullups might be 470 ohm to drive a
- LED, and 4.7K or higher to drive logic circuits.
-
- C: Any port pin may be used as a general purpose input simply by
- writing a 1 into the associated SFR latch bit. Since ports 1, 2,
- and 3 have internal pull-up devices they will pull high and will
- source current when pulled low. When a port 0 bit is programmed
- for input (set to 1) it will go to a high impedance state.
-
-
- Q: Why is such an oddball crystal frequency of 11.0592 MHz used so
- often for 8051 designs.
-
- A1: 11.0592 MHz crystals are often used because it can be divided to
- give you exact clock rates for most of the common baud rates for
- the UART, especially for the higher speeds (9600, 19200).
- Despite the "oddball" value, these crystals are readily available
- and commonly used.
-
- A2: When Timer 1 is used as the baud rate generator, the baud rates
- in Modes 1 and 3 are determined by the Timer 1 overflow rate and
- the value of SMOD (PCON.7 - double speed baud rates) as follows:
-
- smod
- 2
- Baud rate = ------ x (Timer 1 overflow rate)
- 32
-
- Most typically, the timer is configured in the auto-reload mode
- (mode 2, high nibble of TMOD = 0100B). In this case, the baud
- rate is given as:
-
- smod
- 2 Oscillator frequency
- Baud rate = ------- x --------------------
- 32 12 x (256 - TH1)
-
- Some typical baud rates for an 11.0592 crystal:
-
- Baud rate SMOD TH1
- ---------------------
- 19200 1 0FDH
- 9600 0 0FDH
- 4800 0 0FAH
- 2400 0 0F4H
- 1200 0 0E8H
- 300 0 0A0H
-
- Another way to look at it, would be to rework the formula to give
- us the crystal frequency that we need for the desired baud rate:
-
- smod
- Minimum crystal frequency = Baud rate x 384 / 2
-
- This gives us the minimum crystal frequency possible for the
- desired baud rate. The frequency can be evenly multiplied to
- obtain higher clock speeds.
-
- As an example, the minimum crystal frequency for 19.2K baud is:
- 3.6864 = 19200 x 384 / 2 (smod is 1 for 19.2K baud)
-
- 11.0592 = 3.6864 x 3
-
-
- To determine the timer reload value needed, the formula can be
- changed to factor in the multiplier:
- smod
- Crystal frequency = Baud rate x (256 - TH1) x 384 / 2
-
-
- From the example above, the multiplier (3) is used to determine
- TH1:
- TH1 = 256 - 3 = 253 = 0FDH
-
- The crystal frequency for 19.2K baud is:
- 11.0592 = 19200 x (256 - 0FDH) x 384 / 2
- (smod is 1 for 19.2K baud)
-
-
- Other values can also give good results, but 11.0592 is one of
- the higher speed crystals that allows high baud rates.
-
- A: Well, you wanta talk about oddball values? Another good crystal
- value is 7.3728 MHz and its multiples. Using counter1 this gives
- an even 38.4 kbps rate exactly, which is not possible with
- 11.0952 MHz Xtal. <Thanks to Eero-Pekka Mand>
-
-
- Q: How do I decrement the data pointer (DPTR)? Where did the DEC
- DPTR instruction go?
-
- A1: You can't decrement DPTR. Although there is an INC DPTR
- instruction, there is no DEC DPTR. In fact, there is no other
- way to change the contents of DPTR except for MOV and INC.
-
- A2: You can use the accumulator as an offset if you need to perform
- "calculations" on the DPTR. As an example:
- MOV DPTR,#9000 ; load base address into DPTR
- MOV A,#10 ; load desired offset
- MOVC A,@A+DPTR ; retrieve desired data
-
- A3: Another method would be to use indirect addressing. Instructions
- such as MOVX A,@Ri can address a 256 byte "page" of external RAM.
- The value represented by @Ri (@R0 or @R1) is emitted to Port 0,
- which is the low byte of the external RAM address bus. In
- addition, the contents of the P2 register is emitted to Port 2,
- which is the high byte of the external memory address bus. The
- indirect addressing register together with the P2 register, which
- specifies the "current page number", gives us a 16 bit pointer
- into the external memory address space.
-
- This technique can make moving data in external memory much
- faster than reloading DPTR every time. The indirect addressing
- register can be manipulated much easier than DPTR which can only
- be loaded and incremented. Just remember to make sure that P2
- contains the proper value for the high byte of the address.
-
- A4: Inside the BASIC interpreter source code, and published in its
- manual, is a short and efficient subroutine to decrement data
- pointer, only 6 statements:
- XCH A,DPL ; JNZ $+4 ; DEC DPH ; DEC A ; XCH A,DPL ; RET
- Only DPTR is affected, not A or any flags!
- <Thanks to Eero-Pekka Mand>
-
-
- Q: I'm trying to PUSH and POP the accumulator, but my assembler
- complains about the instruction PUSH A. What's wrong with
- this?
-
- A: In instructions that are accumulator specific, A is used to
- represent the accumulator. However, PUSH and POP have no
- accumulator specific forms, only direct addressing forms.
- Therefore, you need to specify the correct accumulator "address"
- - ACC. Use the instruction PUSH ACC.
-
-
- Q: The 8052 AH-BASIC interpreter seems to work OK when I perform
- simple interpreted commands. For example:
- READY
- > PRINT "HELLO"
- HELLO
- However, when I try to enter a [numbered] statement, I get an
- error:
- READY
- > 10 PRINT "HELLO"
- INVALID LINE NUMBER..!!
- I get the same error when I try LIST. No matter what value I set
- a variable to, it returns a 0. What's my problem?
-
- A1: Faulty memory decoding or addressing is the most common cause for
- this error message. This happens when RD/WR is affecting two (or
- more) active memory chips. So, decode each CS very carefully!
-
- A2: Your address decoding might also indicate that there is more
- memory than really exists. Go over your circuit design and
- inspect your wiring carefully.
-
-
- Q: Can I use C for time critical code?
-
- A: The code produced by many of the excellent compilers today, is
- remarkably efficient - for both speed and size. Modern compilers
- are quite adept at keeping track of register and variable usage.
- Further optimization techiniques result in code that can be as
- good or better than hand written assembler. Even for ISRs
- (interrupt service routines), C should be acceptable for all but
- the most time critical routines.
-
- Makes you think twice about breaking your head over assembly
- code.
-
-
- Q: The Intel MCS-51 assembly language defines alternate symbols AR0
- ... AR7 for registers R0 ... R7. What is this good for? (Thanks
- to Wolfgang Heinz who submitted this Q & A)
-
- A: Some 8051 instructions do not support all possible addressing
- modes. For example, the PUSH and POP instructions are only
- available with direct addressing. Since the registers R0 ... R7
- are mapped into the internal memory, they must also have a DATA
- (= direct) address. The special assembler symbols AR0 ... AR7
- are simply the absolute DATA addresses of registers R0 ... R7.
- Although there is no instruction PUSH R5 with true register
- addressing, you can do it with PUSH AR5 (= direct addressing)!
-
- Q: Usually the 8051 register banks are switched with the RS0 and RS1
- bits in the status register PSW at runtime. But how is it
- possible to switch the banks at assembly time with the USING
- instruction, implemented in so many 8051 assemblers?
- (Thanks to Wolfgang Heinz who submitted this Q & A)
-
- A: Not at all! This must ALWAYS be done with bits RS0 and RS1 at
- runtime. The USING instruction switches only the absolute DATA
- addresses of the special assembler symbols AR0 ... AR7 according
- to the selected bank number. With most assemblers that implement
- relocatable segments and object modules, the linker is forced to
- reserve space for the corresponding register bank in the internal
- memory.
-
-
- Q: The Intel 8x151/8x251 won't "drop-in" for an 8051. What gives?
- (Thanks to Dave Baldwin of The Computer Journal for this one)
-
- A: You need to use a programmer to set a couple bits to the correct
- state. This info is hidden away in an app note available from
- their fax-back service.
-
-
-
-
- 3) SOURCES OF INFORMATION ON THE 8051
-
-
- 3.1) FTP sites
-
- The following is a list of the various anonymous ftp sites that have
- 8051 source code and programming languages. There are many others
- that are not listed here that contains bits and pieces. Usually you
- can find them using Archie and searching for "8051", "AS31", "ASM51",
- "MCS-51", "MCS51", and stuff like that.
-
- ftp.pppl.gov (formerly lyman.pppl.gov)
- - this is a great source of 8051 stuff
- /pub/8051
- /pub/incoming - check this out for new untested/unsorted items
-
- ftp.funet.fi (nic.funet.fi)
- - this is a great one, too
- /pub/compilers/8051
- /pub/microprocs/MCS-51 <mirror of ftp.pppl.gov>
- other subdirectories in /pub/microprocs include:
- 1802, 6805, 6811, 8048, 8096 and many other microprocessors
-
- ftp.intel.com
- - this ftp site is pretty good now, and getting better all the
- time!
- - send comments to: ftp-admin@intel.com
- /pub/mcs51
- /pub/mcs51/tools - contains various development tools
-
- ftp.InetBSystems.us.com
- - lots of good stuff here!
- /pub/Philips-MCU/bbs
- - contains the following directories:
- .../assemblers - assemblers, disassemblers, and simulators
- .../basic - Basic utilities and interpreters
- .../forth - Forth programming tools
- .../debuggers - monitors and debuggers
- .../utilities - miscellaneous information and utilities
- .../examples - code examples
- .../unsorted - new [unsorted] files
- .../xa - files on the new XA "16 bit 8051"
- /pub/Philips-MCU/archive - email archive
-
- nctuccca.edu.tw
- - mirror of ftp.intel.com
- - /vendors/Intel
-
- ftp.zilker.net
- - /pub/philips
- - Philips "mini ftp site" set up by Phil Wood of Philips
- - lots of 8051 code and programming tools from their BBS
-
- ftp.mcc.ac.uk
- - this is a new 8051 ftp site
- - soon to be improved
-
- ftp.bsl.unsw.edu.au
- - new 8051 ftp site
- - accepting uploads
-
- info@circellar.com - Email (not ftp)
- - send Email to get information file on services available
- - all Circuit Cellar INK and BYTE related files available
-
- ftp.ee.ualberta.ca
- /pub/cookbook/digital
- - circuits of all types
- - prog51.zip is a programmer for the ATMEL 89C51 flash part
- by Werner Terreblanche
-
- ftp.luth.se
- /pub/languages/assembler
-
- asterix.inescn.pt - FORTH archive
- /pub/forth/8051
-
- hpcsos.col.hp.com
- /mirrors/.hpib0/forth/8051 (mirror of asterix Forth archive)
- /misc/ns32k/beowulf/a-8051
- /mirrors/.hpib0/forth/eForth
-
- ftp.armory.com (Steve Walz)
- /pub/user/rstevew/8051
- /pub/user/rstevew/TB8051
- /pub/user/rstevew/incoming
-
- ftp.oak.oakland.edu
- - has information and software for a wide range of
- microprocessors and microcontrollers, you may have to look
- around a bit
-
- 130.123.96.9
- giovanni/51forth.zip
-
- ai.uga.edu
- /pub/hardware
- - stuff on the Philips 87C750/1/2 microcontrollers
- - assembler, an update for the software in the DS-750 kit,
- notebook of some early experiences and code
- - responses welcome, Michael A. Covington (mcovingt@ai.uga.edu)
-
- ftp.hte.com
- - HiTech Equipment Corporation's ftp site
- - information about their products including some sample code,
- a free 8051 simulator, and various things from around the net
- that relate to the 8051 family
-
- csd4.csd.uwm.edu - no longer supports 8051, don't even try
-
-
- 3.2) Web pages
-
- 8051 board level products
- - http://bailey2.unibase.com/local/beck04.html
-
- 8051 Microcontrollers
- - http://www.cit.ac.nz/smac/cbt/hwsys/i8051/default.htm
-
- AM Research Web Site
- - http://www.amresearch.com/
- - Forth development systems and boards.
-
- Automation and Process Control (Olaf Pfeiffer)
- - http://www.ba-karlsruhe.de/automation/home.html
- - http://www.ba-karlsruhe.de/automation/FAQ
-
- Archimedes Software
- - http://www.archimedes.com/devtools
-
- Brian Brown's 8051 web page
- - http://www.cit.ac.nz/smac/cbt/hwsys/i8051/default.htm
- - contains Brian Brown's 8051 course
- - lots of other good stuff
-
- Cera/EG3 Electronic Engineers' Toolbox (home page)
- - http://www.eg3.com/ebox.htm
- - http://www.cera2.com/ebox.htm
- Cera/EG3 MCU/MPU resources
- - http://www.cera2.com/micro.htm
- Cera/EG3 Navi-GATOR (embedded development tools and chip-specific)
- - http://www.cera2.com/gator.htm
-
- Chip Directory and Chip Manufacturers (Jaap van Ganswijk)
- - http://www.hitex.com/chipdir (USA, California)
- - http://www.civil.mtu.edu/chipdir (USA, Michigan)
- - http://www.leg.ufrj.br/chipdir (Brasil)
- - http://www.xs4all.nl/~ganswijk/chipdir (The Netherlands)
- - http://bbs.cc.uniud.it/chipdir (Italy)
-
- Chipmaker web page
- - http://www.scruznet.com/~gcreager/hello5.htm
- - contains over 200 URLs of chipmakers
-
- Chris Burkey's (KB8ZLI) web page
- - plans for a cheap (about $10) and simple (4 chips) ROM emulator
- - ftp://ieee.cas.uc.edu/pub/electronics/software/burkey/
-
- Circuit Cellar Ink
- - http://www.circellar.com
-
- Dallas Semiconductor
- - http://www.dalsemi.com
-
- Gernsback Web page (Electronics Now, Popular Electronics)
- - http://www.gernsback.com
- - current issue information, recent article related files, FTP
- site, subscription information
-
- Emulation Technology
- - http://www.emulation.com
-
- FIG (Forth Interest Group) web site
- - http://www.forth.org/fig.html
- - http://www.forth.org/Forth/FAQ
-
- Forth, Inc.
- - http://www.earthlink.net/~forth
- - follow the links to chipFORTH, then to 8051
-
- French Forth web site
- - http://ourworld.compuserve.com/homepages/mp7
- maintained by Marc Petremann:
- 17, allee de la Noiseraie
- F - 93160 NOISY LE GRAND
- Email: 100647.3306@compuserve.com
- - http://ourworld.compuserve.com/homepages/bioforth
- maintained by Gerard SOULA
-
- Gregory Pugh's homepage
- - http://sleepy.anest.ufl.edu/~glp/8051.html
-
- Hi-Tech Software
- - http://www.hitech.com.au
- - demo C compiler available (limits - 1K size, no library source)
-
- Intel MCS(R) 51 Microcontroller Family
- - http://www.intel.com/embedded/051/index.html
- - http://www.intel.com/design/usb/ (information on USB)
-
- S. Joel Katz's web page
- - http://www.panix.com/stimpson/micro.html
- - information about 8051 and related microcontrollers
- - not much information yet, but it is increasing rapidly
-
- Ken Tindell's CAN web pag
- - http://www.nrtt.demon.co.uk/can.html
- - Source code to drive the Intel 82527 CAN controller is
- available: just send e-mail to info@nrtt.demon.co.uk, with
- "Request Intel 82527 drivers" (without the quotes) in the
- subject line.
-
- Lakeview Research (Jan Axelson)
- - http://www.lvr.com/
- - microcontroller page (resources for 8052-Basic projects):
- http://www.lvr.com/microc.htm
-
- Mike Miller's 8051 Home Page
- - http://www.ece.orst.edu/serv/8051/
- - pointers to other 8051 pages
- - contains html copy of this FAQ
-
- Nohau Elektronik AB
- - http://www.nohau.com/nohau
-
- Packet Radio web page
- - http://www.tu-bs.de/studenten/akafunk/pr8051
- - Contains some schematics and code to do packet radio (AX.25)
- experiments with different types of MCS51 controllers. Packet
- radio is used by ham radio amateurs to exchange data. There is
- an almost worldwide net of PR stations.
- - The programs were written by August Gihr and they are only
- available on the packet radio net or this web page.
-
- Paul's 8051 Tools, Projects and Free Code
- - http://www.ece.orst.edu/~paul/8051-goodies/goodies-index.html
- - page contents: AS31 Assembler
- PAULMON 8051 Family Monitor/Debugger
- Low-Cost 8051 Development Board Designs
- 8051 Code Library
- Atmel 89C2051 in-circuit programmer
-
- Philips
- - http://www.semiconductors.philips.com/ps/philips17.html
-
- The Polis research project web page
- - http://www-cad.eecs.berkeley.edu/Respep/Research/hsc/abstract.html
-
- Pseudocorp
- - http://www.teleport.com/~rhowden
- - New Site - products and pricing
-
- Richard Grant's 8051 Based Vario
- - http://cougar.stanford.edu:7878/RGvario/vario.html
- - Hang-Gliding/Paragliding WWW server. The application is an
- 8751 based variometer (used by pilots to indicate the rate of
- ascent or descent). It includes schematics and assembly
- language source.
-
- Silicon Studio's web site
- - http://sistudio.com
- - plans for a simple, REALLY simple (2 transistors and 5
- resistors), 2051 programmer, called the BlowIT 2051
-
- Standard Microsystems Corporation
- - http://www.smc.com
-
- Steve Merrifield's 8051 home page
- - http://www.ee.latrobe.edu.au/postgrad/steve/8051.html
-
- Systronix web site
- - http://www.systronix.com
-
- Thomas Wedemeyer's SAB80C535 web page
- - http://www.zfn.uni-bremen.de/~g16i/
- - SAB80C535 based board design
- - English and German
-
- USB web page
- - http://www.usb.org/
-
- Xicor's web page
- - http://www.xicor.com/
- - 8051 code - http://www.xicor.com/xicor/menulink/link42.htm
- - 8051 microperipherals -
- http://www.xicor.com/xicor/menulink/link6.htm
-
-
- 3.3) Mailing lists
-
- Philips-News@InetBSystems.us.com - Email (not ftp)
- - send Email with "subscribe" in the subject field to be put
- on list for newsletter
- Philips-archive@InetBSystems.us.com - Email (not ftp)
- - send Email message with the word "help" in the subject line to
- learn how to access the archive
- Philips-forum-request@InetBSystems.us.com - Email (not ftp)
- - send an Email message with the word "subscribe" in the subject
- line to participate in the forum, and receive usage
- instructions and guidelines
- Philips-Info@InetBSystems.us.com - Email (not ftp)
- - send Email message to get information on all of Philips Email
- services
-
-
- 3.4) BBSs
-
- The following BBSs have 8051 information:
-
- Blue Earth Research
- - support for their line of microcontroller boards
- - (507)387-4007
-
- Circuit Cellar, Inc.
- - contains code from their magazine articles and from the
- original Circuit Cellar articles in Byte magazine, also
- contains many other interesting items
- - GOOD STUFF HERE!
- - The BBS is mentioned in the masthead of each issue (on the
- table of contents page). Excerpts from the BBS appear in Ken
- Davidson's ConnecTime column in every issue with a description
- of how to access the system at the end of every column.
- - (203)871-1988
- - Voice: (203)875-2751
- - Fax: (203)872-2204
-
- The Computer Journal - TCJ/DIBs BBS
- - 8051 code and assembler(s), lots of sample code
- - Forth section also with Camel51
- - 916-722-5799
-
- Dallas Semiconductor
- - Support for their line of innovative products
-
- Dunfield Development Systems
- - support for their Micro-C compiler and development tools
- - includes a lot of nice goodies - CHECK THIS OUT!
- - (613) 256-6289
-
- Electronics Now
- - contains code from their magazine articles
- - (516)293-2283
- - 1200/2400, 8N1
-
- Intel American Marketing Applications Support Bulletin Board System
- - 16 lines, hi-speed modems (14.4K)
- - Lots of useful info and files (including design examples)!
- - Full ANSI-BBS with color is recommended, but support for just
- about all terminal types is provided
- - (916)356-3600 (24 hours)
- Auto config: 1200 thru 14.4K Baud
- 8 data bits, no parity, 1 stop
-
- Hi-Tech Software
- - +61 7 3300 5235 (Australia)
-
- Iota Systems, Inc.
- - Support for their line of hardware and software products
- - 15 application notes which show how to hook up such things as
- clocks, A/D, D/A, and special chips to the 8051
- - (702)831-4732
-
- Jens Holm's electronics BBS:
- - one of a number of BBSs that are networked over most of the
- industrial part of Europe
- - +45-86-510356 (Denmark)
- - distributes all shareware and freeware software which
- relates to electronics
- - system administrator - Jens Holm
- jholm@bjarke.nrg.dtu.dk or Jens.holm@asgaard.dk
-
- Massilia Underground BBS (Marseille, France)
- - +33-91794120
- - fidonet 2:323/25
- - not a commercial BBS
- - microcontroller related stuff (assemblers, debuggers,
- boards, etc), some 8051 stuff
- - everything coming in is tested
-
- Micro Computer Control Corporation
- - (609)466-4117
-
- Philips Semiconductor - Europe
- - support for: standard logic, programmable logic,
- in-car electronics (now open), 8 and 16 bit microcontrollers,
- I2C software, third party software, discrete semiconductors,
- cross assemblers (general), RF (planned)
- - PHIBBS is located in the Netherlands: +31-40-721102
- - maximum 21600 baud / V42bis / HST/Vterbo
- - 24 hours a day available
- - Help desk: +31-40-722749 (9.00 AM - 16.00 PM CET)
-
- Philips Semiconductor - North America
- - support for their 8051 variants
- - contains many good source code items
- - partially mirrored on ftp.pppl.gov and nic.funet.fi
- - (800)451-6644 or (408)991-2406
-
- PseudoCorp
- - support for their line of simulators and assemblers
- - (804)873-4838
-
- Realtime Control & Forth Board (RCFB)
- - Forth and assembly for the 8051
- - 300 through 14.4 baud
- - (303)278-0364 (24 hours)
-
- Systronix Inc.
- - support for their line of development tools
- - (801)487-2778
-
-
- 3.5) Help available!
-
- Listed here are individuals who have expressed interest in helping
- others with hardware and software problems for 8051 systems.
-
- Does any one else out there think that they can help? Just let me
- know what your areas of specialization are and I'll add your name to
- the list. Thanks!
-
- Dick Barnett <rbarnett@purdue.edu>
- voice: 765-494-7497
- snail: Richard H. Barnett, PE, Ph.D.
- Professor of Electrical Engineering Technology
- Purdue University
- 1415 Knoy Hall of Technology
- West Lafayette, IN 47907-1415
- Specializes in 8051 (core processors), 80C552, and 87C751
- applications.
-
- Mark Hopkins <mark@omnifest.uwm.edu>
- Mark is the author of the CAS assembler and of the 8051.ZIP
- programs. He's now working on JOLT, a code generator with a
- C-like syntax. His areas of specialization include:
- multitasking, interrupts, basic stuff (like addressing, memory
- spaces), the 8052 BASIC chip, interfacing the chip with external
- inputs and outputs
-
- Hans Schou <chlor@schou.dk>
- Hans is offering his assistance to users of the Standard
- Microsystems Corp. COM20051. He's not an expert, but he has some
- experience with it.
-
- Neville Miles <nevm@scitec.com.au or nmes@ozemail.com.au>
- Applications and programming the Intel 8051. He's also using
- Atmel parts if you need help with these.
-
- Steve <paxit@inetnebr.com>
- Steve has designed hardware and written software for the Atmel
- AT89C1051, Intel 87C52, and Philips 87C751, and has also built a
- programmer for the Atmel AT89C1051. He knows both hardware and
- software.
-
-
- 4) 8051 PRODUCTS
-
- This section includes descriptions and references to free and
- commercial software for the 8051. FTP sites and BBSs contain many
- quality packages and code samples for free. For heavy duty use, you
- might prefer the many commercial packages that are available. With
- the public domain (or free) stuff, you're usually on your own. The
- commercial packages usually provide extensive documentation and
- support.
-
-
- 4.1) Free languages and development tools
-
- The following is a list of the languages and development tools that I
- could find on the net. Nearly all of them include source code,
- however not all are public domain.
-
- Assembler
-
- Program: asem5112.zip
- Description: 8051 cross assembler for MS-DOS, freeware
- Author: W.W. Heinz
- Location: ftp.ix.de : /pub/elrad/023
- oak.oakland.edu : /SimTel/msdos/crossasm
- garbo.uwasa.fi : /pc/assembler
-
- Program: ML-ASM51.ZIP
- Description: MetaLink's 8051 family macro assembler
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
- http://www.psyber.com/~tcj/tcjtools/ml-asm51.zip
-
- Program: A51.ZIP
- Description: PseudoSam 8051 Cross Assembler
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
-
- Program: AS31.ZIP
- Description: C source for an 8051 assembler, and a simple monitor
- Author: Ken Stauffer
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
- ftp.uu.net
- oak.oakland.edu : /pub/msdos/crossasm/as31.zip
- many other locations (use Archie to find)
-
- Program: CUG292WK.ZIP
- Description: C source for a cross assembler, includes 8051
- Author: Alan R. Baldwin
- Location: oak.oakland.edu : /pub/msdos/crossasm
- pc.usl.edu : /pub/msdos/systools
- many other locations (use Archie to find)
-
- Program: Frankenstein
- Description: C source for a cross assembler, includes 8051
- Author: Mark Zenier
- Location: ftp.njit.edu : /pub/msdos/frankasm/FRANKASM.ZOO
- lth.se : /pub/netnews/alt.sources/volume90/dec
- ftp.uni-kl.de : /pub1/unix/languages/frankenstein.tar.Z
- many other locations (use Archie to find)
-
- Program: CAS 8051 assembler
- Description: Experimental one-pass assembler for the 8051
- with C-like syntax. Includes assembler, linker
- and disassembler.
- Author: Mark Hopkins
- Location: ftp.pppl.gov : /pub/8051/assem
- ftp.funet.fi : /pub/microprocs/MCS-51/csd4-archive/assem
-
- Program: a51
- Description: Portable cross assembler (source in C), other
- processors available
- Author: William C. Colley, III
- Location: hpcsos.col.hp.com : /misc/ns32k/beowulf/a-8051
-
- Program: TASM
- Description: Table driven cross-assembler for DOS, supports
- many different microcontrollers and microprocessors
- Author: Speech Technology Inc.
- Location: various different places
-
- Program: HASM, HSIM
- Description: A configurable Makroassembler/Simulator
- Comment: Only for private, educational, and evaluation use
- Only available in German
- Author: Dipl.- Ing. H.P. Hohe
- Location: ftp.ix.de:pub/elrad/022/hasm18.zip
- ftp.ix.de:pub/elrad/022/hasm18.txt
- and mirrors of ftp.ix.de
-
- Program: as
- Description: Portable cross assembler for (8051, TMS, PIC,
- DSP5600, 68hc11).
- Comments: Original version in German only. Turbo Pascal source
- available for free. Unix version comes in source
- form and is compilable in German or English.
- Author: Alfred Arnold
- Location: ftp.uni-stuttgart.de : /pub/systems/msdos/programming/as
- (original version in Turbo Pascal)
- sunsite.unc.edu:
- /pub/Linux/devel/lang/assemblers/asl-1.41r5.tar.gz
- (new C version for Unix systems)
-
-
- Basic
-
- Program: BASIC52.ZIP (BASIC-52.ZIP)
- Description: Source files for original BASIC 52 interpreter
- Author: Intel Corporation, Embedded Controller Operations
- Location: ftp.intel.com : /pub/mcs51
- ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
-
- Program: BAS051.ZIP
- Description: Converts IBM BASIC to 8051 assembly (compiler)
- Author: Winefred Washington
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/8051/signetics-bbs
-
- Program: BASIC31.ZIP
- Description: BASIC-52 interpreter for 8031/8051 in external EPROM
- Author: Intel w/ changes by Dan Karmann
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
-
- Program: TB-51.ZIP
- Description: TinyBASIC for 8031
- Author: JHW (from Intel InSite library) w/ fixes by Tom Schotland
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
-
- Program: TB51ML23.ZIP
- Description: MetaLink ASM compatible tiny BASIC
- Author: adapted for MetaLink assembler by Jim Lum
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
-
-
- Forth
-
- Program: EFORTH51.ZIP
- Description: eFORTH environment for the 8051
- Author: C. H. Ting
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
- asterix.inescn.pt : /pub/forth/8051
- hpcsos.col.hp.com : /mirrors/.hpib0/forth/eForth
-
- Program: FORTH51.ZIP (FORTH86.ZIP used as host)
- Description: FORTH development system for 8051 with PC host
- Author: William H. Payne, the author of "Embedded Controller
- Forth for the 8051 Family"
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
- asterix.inescn.pt : /pub/forth/8051
- hpcsos.col.hp.com : /mirrors/.hpib0/forth/8051
-
- Program: XD8051.ZIP
- Description: Development environment for use with F-PC Forth
- Author: Paulo A.D. Ferreira
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/signetics-bbs
-
- Program: 51FORTH.ZIP
- Description: Subroutine threaded Forth
- Author: Scott Gehmlich
- Location: hpcsos.col.hp.com : /mirrors/.hpib0/forth/8051
- 130.123.96.9 : /giovanni/51forth.zip
-
- Program: FORTH552.ZIP
- Description: A Non-Standard Forth System for the Signetics 80C552
- Author: Alberto Pasquale
- Location: asterix.inescn.pt : /pub/forth/8051
- hpcsos.col.hp.com : /mirrors/.hpib0/forth/8051
-
- Program: CamelForth/51
- Description: ANSI Standard Forth for the 8051 family
- Author: Brad Rodriquez
- email: bj@headwaters.com
- amateur packet radio: VE3RHJ@VE3IJD.#CON.ON.CAN.NA
- Location: ftp://ftp.taygeta.com/pub/Forth/Camel/cam51-13.zip
-
- Program: 8051 eForth
- Description: Public Domain optimized eForth for 8051 and 68HC11,
- written in native UCASM assemblers.
- Comments: Most of the documentation is in German. Supplied with
- EFTERM terminal emulator.
- Author: W. Schemmer
- Location: Available for $25 from:
- Offete Enterprises, 1306 South B Street
- San Mateo CA 94402
- (415)574-8250
-
-
- Development systems
-
- Program: 8051.zip
- Description: Many development tools including: debugger, monitor,
- LCD and stepper moter driver, communications, host
- client, and much more. This is a great collection of
- tools.
- Author: Mark Hopkins
- Location: ftp.pppl.gov : /pub/8051/signetics-bbs
- ftp.funet.fi : /pub/microprocs/MCS-51/csd4-archive
-
- Program: RISM and IECM51.EXE compatible host system
- Description: RISM is a reduced instruction set monitor and
- IECM51.EXE is its compatible host system for a PC
- Comments: These two programs together constitute a bare-bones
- method of developing 80C51 system code without an
- emulator. RISM51X is installed in the target system
- and connected to a host PC system through a serial port.
- The host PC runs the debugger IECM51.EXE. Once the
- system has been debugged, RISM can be removed and the
- target can be run in stand-alone mode.
- Author: Intel
- Location: ftp.intel.com : /pub/mcs51/tools
-
- Program: ApBUILDER 2.0
- Description: Development system for the Intel MCS-51(R) family
- (also for the MCS-96(R) family, 80x186, and 80x386
- embedded microcontrollers).
- Comments: Requires Windows 3.1
- APBUILDR.TXT - description in ASCII
- APBDISK1.EXE - binary self-extracting file for disk 1
- APBDISK2.EXE - binary self-extracting file for disk 2
- Author: Intel
- Location: ftp.intel.com : /pub/mcs51 and /pub/mcs96
-
- Program: FXDSMAN.EXE
- Description: 8xC51Fx data sheets and manual in Windows 3.1
- hypertext style
- Comments: binary self-extracting file for one diskette
- Author: Intel
- Location: ftp.intel.com : /pub/mcs51/80c51
-
- Program: sim51d
- Description: Shareware Simulator in German
- DM 50 to register for full version
- Author: Werner Hennig-Roleff
- Location: ftp.pppl.gov : /pub/8051/hannover
-
- Program: PDS51.ZIP or EXE or
- PDSxxx.ZIP where xxx represents the version number
- Description: This is the IDE for the Philips PDS51 system. It
- contains a simulation engine and can therefore be run
- in a standalone mode. Great for evaluating the PDS51
- product or just as a full environment simulator.
- Location: Philips North America BBS (800)451-6644, (408)991-2406
- http://www.he.net/~adr
- CompuServe:
- Software Development Forum, Embedded Systems Section
- (GO CLMFOR)
- PC Programming Forum, Tools/Debuggers forum
- (GO PCPROG)
-
- Program: NoICE
- Description: PC-hosted debugger (NOT a simulator) for use with a
- variety of microprocessor targets (Z80/Z180, Z8,
- 8051, 80(1)96, 6809, 68HC11, 65(C)02, M50740/M38000,
- TMS370, and H8/300). The debugger consists of a
- target-specific DOS program, NOICExxx.EXE, and a
- target-resident monitor program (about 1K code).
- Comments: Shareware. The distributed version is fully functional.
- Registration is $25 in the US, $30 elsewhere.
- Author: John Hartman <102203.1513@compuserve.com>
- Location: any Simtel archive/mirror
- or
- CompuServe:
- GO SDFORUM, library section 12, embedded systems
- GO IBMFF, do keyword search for "NoICE"
- or
- The Circuit Cellar BBS at 860-871-1988
-
- Program: sim552vq.zip
- Description: 8051/80C552 simulator (Freeware)
- Comments: Program is capable of reading .HEX and .S19 records, or
- saving memory to a file. It supports both code and
- data. Written in Turbo Pascal for XT and upwards.
- Author: Brian Brown
- Location: cscnt.cit.ac.nz : /pub/intel/sim552v1.zip
-
- Program: HASM, HSIM
- Description: A configurable Makroassembler/Simulator
- Comments: Only available in German
- Author: Dipl.- Ing. H.P. Hohe
- Copyright: Only private , Education and evalutation use
- Location: ftp.ix.de:pub/elrad/022/hasm18.zip
- ftp.ix.de:pub/elrad/022/hasm18.txt
- and mirrors of ftp.ix.de
-
- Program: Emily52
- Description: simulator
- Comments: Shareware.
- Author: Dunfield Development Systems
- Location: any Simtel archive/mirror
-
- Program: BlowIT
- Description: Atmel 2051 programer
- Comments: Freeware
- Author: Silicon Studio
- Location: http://sistudio.com/
-
-
- Real-Time Operating Systems (RTOS)
-
- Program: TERSE
- Description: - Signature-Scheduled dataflow operating system
- (RTOS) developed for embedded single-processor and
- distributed microcontroller systems. Easy to use,
- very compact, and encourages totally deterministic
- and safe performance.
- - The first implementation is for the 8051 family,
- and occupies from 260 to 450 bytes, the latter
- offering network support.
- - public domain
- Comments: Also available is a new type of "terse-Case" development
- methodology, particularly suited to embedded distributed
- systems.
- Author: Barry Kauler
- Department of C & C Engineering
- Edith Cowan University, Joondalup Drive
- Joondalup, WA 6027, Australia.
- Email: b.kauler@cowan.edu.au
- Location: WWW - ftp://scorpion.cowan.edu.au/pub/terse/terse.htm
-
-
- 4.2) Free C compilers
-
- There is finally a free C compiler for the 8051. The Retargetable
- Concurrent Small C (RCSC) compiler is featured in an article in the
- August 1997 Dr. Dobbs. RCSC is downloadable from Dr. Dobb's at:
- http://www.ddj.com
- ftp://ftp.mv.com/pub/ddj
-
- Several commercial C compilers have evaluation versions available.
- These are not too useful (even for hobbyist projects) since they
- usually don't include libraries. However, they do afford the user
- the chance to inspect the quality of the code generated.
-
- In most cases, it makes more sense to invest a bit, and get something
- serious. Also, by buying a commercial package, you have the
- advantage of having the documentation, and being able to get
- technical support. As Hershel Roberson says about the Dunfield
- package, "It is certainly worth the money. It is probably 3/4 as good
- as compilers that cost 10 times as much!"
-
- There are three low-cost C compilers currently available for 8051
- development:
-
- Dunfield Development Systems
-
- I've been using the Dunfield Development System, and its really quite
- nice. I've also heard many good things about it from others. For
- $100 you get a near ANSI-C compiler, run-time library with source,
- assembler, ROM debugger, integrated development environment, monitor
- with source, utilities, and other extras. A high quality simulator
- for only $50 is also available separately. The simulator has an
- option allowing you to interface to your target by using an on-chip
- monitor. Although not freeware, the low price, the features, all of
- the extra goodies, and the good reviews make this a package worth
- looking at. Also, if you're interested in working on more than one
- family of microcontroller, Dunfield supports a wide range. This
- means only needing to learn one system, instead of many.
-
- Dunfield Development Systems
- P.O. Box 31044, Nepean, Ontario Canada K2B 8S8
- (613)256-5820 Fax: (613)256-5821
- BBS: (613)256-6289
- Web: http://www.dunfield.com
- Email: General information: info@dunfield.com
- Sales inquiries/Administration: sales@dunfield.com
- Technical inquiries/Support tech@dunfield.com
-
- Micro Computer Control Corporation
-
- Another low priced ($100) C compiler comes from Micro Computer
- Control. This package was unavailable for review, but according to
- the manufacturer, it features: Cross compilers running under DOS are
- available for the 8051 and the Z8 (including Super-8). This package
- includes a C compiler, assembler, linker, librarian, and extensive
- printed documentation. A simulator/source code debugger is available
- for an additional $79.95. The simulator is completely configurable,
- so much so that you don't even need the target hardware to test with.
- You can configure all I/O and other features of your target chip or
- environment.
-
- Micro Computer Control Corporation
- PO Box 275, 17 Model Ave., Hopewell, NJ 08525
- (609)466-1751 Fax: (609)466-4116 BBS: (609)466-4117
- Email: 73062.3336@compuserve.com
-
- SPJ Systems
-
- C-31 is a new cross compiler from SPJ Systems. The full package
- which costs $150 (USD) includes a C compiler (ANSI compatible
- subset), assembler, source linker, and simulator (source code
- debugger). Compiler features include: support for floating point
- numbers, extensive collection of library routines, support for using
- Special Function Registers (SFR), assembly language interface,
- peripheral keyword (allows specifying an address of a standard
- peripheral).
-
- The simulator allows source level debugging. A few memory mapped
- hardware peripherals are simulated including an LCD display, 8279
- keyboard processor, and an 8255 parallel port. (SPJ also has a plain
- simulator available as a separate product for assembly/machine code
- debugging.)
-
- A working demo of the compiler package, which includes the library
- sources and permits the compilation of small programs, is available
- from their web site. This is a new package with a few rough edges,
- but it easy to use, has a decent price, and has good potential.
- Check out the demo on their web site and see for yourselves.
-
- SPJ Systems
- 114, Chitrashala Bldg.
- 562, Sadashiv Peth
- Pune, India
- Phone: 91-212-451607 Fax: 91-212-480285
- Email: spjs@giaspn01.vsnl.net.in
- Web: http://www.prime-digest.w1.com/spj
-
-
- 4.3) Commercially available products
-
- Many firms (large and small) offer a variety of 8051 microcontroller
- variants, programming languages, support packages, and development
- systems.
-
- No endorsement is implied by inclusion in this list. I apologize to
- anyone I left out; It's only because I didn't know about you. If
- you want to be included in this list, just drop me a line - please.
- Any corrections and additions appreciated.
-
- C compilers ($$$ - high, $$ - medium, $ - low priced)
- - 2500 A.D.
- - Archimedes Software $$$ & $$
- same as Keil Electronics C
- Archimedes is introducing StartRight, a low cost 8051 C
- compiler for $700
- - Avocet Systems $$
- repackaging of the Hi-Tech Software C compiler
- - BSO/Tasking $$
- - Crossware Products
- - Dunfield Development Systems $
- Complete C compiler development system for MS-DOS
- includes: compiler, run-time library with source, assembler,
- ROM debugger, integrated development environment, monitor
- with source, utilities, and other extras
- low price: $100
- good reputation and good support
- works well with the Dallas DS5000/DS2250
- - Franklin Software $$ ? (new prices)
- now marketing their own C compiler
- includes: PC-Lint and an IDE
- - IAR Systems
- IAR tool kit comes with a C-Cross compiler, assembler,
- Xlink linker, Xlib librarian, C-SPY simulator, editor,
- make utility and a real-time kernel
- formerly licensed for distribution in the US and Canada
- under the Archimedes brand name
- - Hi-Tech Software $$
- assembler, C compiler, linker, library, serial port
- debugger, and Windows style integrated development
- environment
- ANSI C and IEEE 32 float compatable with some very useful
- extensions
- $900US
- - Intermetrics Microsystems Software, Inc.
- Whitesmith's compiler, assembler, and C source level
- debugger
- - Keil Electronics $$$
- compiler, assembler, debugger, real-time kernel, ROM
- monitor, libraries for special 8051's to set SFR,
- embedded I/O devices, A/D, etc.
- - Mandeno Granville Electronics, Ltd
- SYS51C - ANSI C Cross Compiler
- - Micro Computer Control $
- Developer's kit includes "C"-like compiler, assembler,
- linker, librarian, extensive printed documentation
- low cost ($99.95)
- - Okapi Systems
- - Production Languages Corporation
- DOS- and Windows- based compilers
- Integrated development environment includes ANSI C compiler,
- assembler, linker, librarian, debugger
- - Signum Systems
- - SPJ Systems $
- low cost ($150.00)
-
- Basic interpreters/compilers
- - Binary Technology, Inc.
- - Iota Systems, Inc.
- Basic-752 interpreter (simulator also available)
- Basic-52 Plus interpreter
- - MDL Labs
- BASIKIT--Integrated Programming Environment for BASIC-52,
- and for MDL-BASIC-I, MDL-BASIC-P, and MDL-BASIC-D.
- BASIKIT includes a full-screen editor and permits writing
- programs with labels rather than line numbers.
- MDL-BASIC-I and MDL-BASIC-P are supersets of the original
- BASIC-52, for the Intel 8052 and the Philips PCB83C552.
- MDL-BASIC-D is a BASIC for the Dallas 87C530 which accesses
- all the features of the chip, including both serial
- ports, the Watchdog, and the power-saving features. The
- BASIC will address up to 512K of memory and will collect
- data into that memory via serial port interrupts. It runs
- faster at 25 MHz than compiled code on the 8052.
- - Micro Future
- Basic-52 development system
- - Systronix Inc. (Basic compiler)
-
- Pascal
- - Mandeno Granville Electronics, Ltd
- PASCAL51 - Advanced Turbo PASCAL compliant cross compiler
- - Scientific Engineering Labs
-
- Modula-2
- - Mandeno Granville Electronics, Ltd
- Mod51 - optimizing Modula-2 Compiler, smallest program is 14
- bytes, ideal for both very tight/fast projects and very
- large ones with multiple modules, produces smaller/tighter
- code than C, has extensive libraries and working examples
- - Vail Silicon Tools, Inc.
-
- PL/M
- - BSO/Tasking
-
- Board level products
- - Ackerman Computers Sciences (ACS)
- - AM Research
- complete FORTH based system with PC based host system
- - Binary Technology, Inc.
- - Blue Earth Research
- - Blue Ridge Micros (8031 and 8052-BASIC based boards)
- - CG Microsystems
- MCU system based on the DS80C320
- piles of features including 2 ISA slots
- about $90 for the basic system
- - Circuit Cellar Inc.
- - DataCraft International
- - Dunfield Development Systems
- - EE Systems
- - Forth, Inc.
- - HiTech Equipment Corp.
- - Iota Systems, Inc. (line of development packages, boards,
- peripherals, and components)
- - J & M Microtek, Inc.
- - L.S. Electronic Systems Design
- - Mandeno Granville Electronics, Ltd
- - New Micros
- 8051 based NMIY0031 SBC
- $39 + shipping you
- includes: SBC with 8051 (Siemens SAB8051, can be
- substituted), 8K RAM, EPROM with a burnt-in monitor which
- supports downloading hex files into the RAM and executing
- them
- the board can accept 3 memory chips (each one up to
- 32K), one of which is for program, one for data and the
- third can be configured as wanted
- it has a 4x5 matrix keyboard interface, LCD interface,
- RS232 and support for RS422/485 (need to add the chips)
- prototyping area of about 3.5 x 2 inches
- on floppy you get: User manual for the board in Word
- and plain text formats with many programming examples in
- all supplied languages (about 150 pages), A51 assembler,
- Small C compiler, hex file for the MCS-52 Basic
- interpreter EPROM with MCS-52 manual, hex file for
- MAX-FORTH interpreter EPROM with documentation, hex file
- for the supplied monitor and documentation, and a
- terminal program
- - Parallax, Inc.
- - Prologic Designs
- - Rigel Corporation
- - Software Science
- nice boards with prototyping area
- - Suncoast Technologies
- - URDA, Inc.
-
- Assemblers
- - 2500 A.D.
- - Archimedes Software
- same as Keil Electronics
- Archimedes is introducing StartRight, a low cost 8051
- assembler for $200
- - BSO/Tasking
- - Crossware Products
- - Custom Computer Consultants
- - Cybernetics Microsystems
- - Dunfield Development Systems
- Supports both Intel and Motorola style syntax
- - Emulation Technology, Inc.
- - Intel Corporation
- - Keil Electronics
- - Lear Com Company
- - Metalink
- - Micro Computer Control
- - Microtek Research
- - Nohau Corporation
- - Okapi Systems
- - Onset Computer Corporation (8051 Assember for MAC)
- - Parallax, Inc.
- - PseudoCorp
- - Raven Computer Systems
- - Signum Systems
- - Speech Technology Inc.
- TASM (table driven cross assembler supports many different
- microcontrollers and microprocessors)
- - Universal Cross Assemblers
- CROSS32 supports 40-50 different processors
-
- Forth
- - AM Research
- Development system, features kernel of less than 700 bytes
- - Forth, Inc.
- A cross-development product for the 8051 family
- which includes a board and extensive documentation.
- - Forth Systeme
- - MPE: MicroProcessor Engineering Ltd.
- A cross-development system for the 8051 family
- extensive documentation
- interactive single chip development, multitasking,
- bank switching for more than 64k code
- - Offete Enterprises
- 8051 eForth (C. H. Ting -- $25.00). "A small ROM based
- Forth system ... Source code is in MASM IBM 5.25 disk
- with 8051 eForth Implementation Note."
-
- ROM Monitor-based Debuggers
- - ChipTools (ChipView-51 looks like turbo debugger)
- - Dunfield Development Systems
- Can be used with DS5000 for single-chip in-circuit
- emulation
-
- Simulators
- - 2500 A.D.
- - Avocet Systems
- - ChipTools
- on a 33 MHz 486 matches the speed of a 12 MHz 8051
- - Crossware (simulator running under Windows)
- - Cybernetic Micro Systems
- - Dunfield Development Systems
- Low cost $50.00
- 500,000+ instructions/second on 486/33
- Can interface to target system for physical I/O
- Includes PC hosted "on chip" debugger with identical user
- interface
- - HiTech Equipment Corp.
- - Hitex
- - Iota Systems, Inc.
- - J & M Microtek, Inc.
- - Keil Electronics
- - Lear Com Company
- - Mandeno Granville Electronics, Ltd
- - Micro Computer Control Corporation
- Simulator/source code debugger ($79.95)
- - Microtek Research
- - Production Languages Corp.
- - PseudoCorp
-
- Emulators ($$$ - high, $$ - medium, $ - low priced)
- <Thanks to Alistair George for this bit of important advice...
- Potential customers of emulators should check to make sure that the
- emulator supports the required external hardware (ports,
- interrupts, etc) before they buy - its probably the most
- important spec, but one easily missed. Some emulators only offer
- very minimal support, which sometimes hardly makes it worthwhile to
- bother.>
- - Advanced Micro Solutions $$
- - Advanced Microcomputer Systems, Inc. $
- - Applied Digital Research Ltd. $$
- - American Automation $$$ $$
- - Applied Microsystems $$
- - ChipTools (front end for Nohau's emulator)
- - Cybernetic Micro Systems $
- - Dunfield Development Systems $
- plans for pseudo-ice using Dallas DS5000/DS2250
- used together with their resident monitor and host debugger
- - Emulation Technology, Inc. $$
- OpenEmulator in-circuit emulators adaptable for over a
- hundred microcontrollers/microprocessors
- - HBI Limited $
- - Hewlett-Packard $$$
- - HiTech Equipment Corp.
- - Hitex $$
- - Huntsville Microsystems $$
- - Intel Corporation $$$
- - Kontron Electronics $$$
- - Lauterbach Datentechnik GmbH
- 8051 In-Circuit Emulators based on a universal high-
- performance emulation system called TRACE32.
- - Mandeno Granville Electronics, Ltd
- full line covering everything from the Atmel flash to the
- Siemens powerhouse 80c517a
- - MetaLink Corporation $$ $
- - Nohau Corporation $$
- - Orion Instruments $$$
- - Philips $$ $
- DS-750 pseudo-ICE developed by Philips and CEIBO
- real-time emulation and simulator debug mode
- source-level debugging for C, PL/M, and assembler
- programs 8xC75x parts
- low cost - only $100 from Philips ($250 from CEIBO)
- DOS and Windows versions available
- PDS51 board level In-Circuit Emulation system
- no stolen resources
- Daughter boards support wide range of Philips derivatives
- approximately $US1000 to $US1200 depending on daughter
- board
- - Signum Systems $$
- - Sophia Systems $$$
- - Zax Corporation
- - Zitek Corporation $$$
-
- Real-time
- - Byte-BOS Integrated Systems
- small, prioritized, preemptive real-time kernel
- - Embedded System Products (formerly A.T. Barrett and Associates)
- ROMable embedded-system kernel: source provided. Provides
- programming interface identical on all target platforms.
- Basic, advanced, and extended library packages available.
- - Intellimap Engineering
- DCE51 real time operating system
- - JMI Software Systems, Inc.
- small, prioritized, preemptive real-time kernel
- - StarCom
- CRTX, embedded real-time micro kernel primarily intended for
- embedded 8-bit applications using 8051, 68HC11, 80188 etc.
- Simple, low cost, and includes ANSI C source for
- portability.
- - U S Software
- SuperTask! - multitasking executive
-
- Trainers
- - Advanced Educational Systems (AES)
- complete learning system (board, LCD, keypad, A/D, D/A, etc)
- - Sun Equipment Corp.
- trainers
-
- Miscellaneous
- - Creative Applications Engineering, Inc
- CheepTools (integrated environment)
- - Dallas Semiconductor
- evaluation/development kit for their DS5000 (very nice)
- - Data Sync Engineering (disassembler)
- - Datarescue
- IDA - an interactive, multi-os disassembler supporting:
- OS/2, Win95, Win NT, Win, NLMs and more. Unlike other
- disassemblers, IDA works with you, allowing you to modify
- the disassembled code "on the fly". It supports many
- processors, various input file formats, and can produce
- various output files etc. IDA has a built-in C-like
- language and sports a TVision user interface.
- - Educational Laboratories
- development courses:
- 8051 Microcontroller Based Computer Design
- Programming 8051 Based Computers
- each course $19.95, both $29.95
- - Electronic Product Design, Inc.
- development system (integrated package with assembler,
- project manager, text editor, programmer)
- - Exor Inc. (ladder logic compiler)
- - Feger + Co.
- offers a series of German language 8051 related books they
- call `MC-Tools' describing the processors and/or projects
- for PC-addin boards:
- MC-Tools 1 - 80c535 project for DM 119; includes 260 page
- book, an empty PCB, and a diskette with assembler,
- debugger, PC-Oscilloscope
- MC-Tools 4 - same as above but based on 80c537
- MC-Tools 3 - Die 8051-Microcontroller Familie vom 8051 zum
- 80C517A; text book on the 8051 and Siemens derivatives,
- 360 pages.
- MC-Tools 5 - handbook on the 80C517 and 80C517A, 360 pages
- - Iota Systems, Inc.
- integrated environment system
- - Mandeno Granville Electronics, Ltd
- PIC to 8051 conversion program
- - Parallax, Inc.
- programmers
- - Philips
- 87C51 programmers
- LCPx5x - 24 and 28 pin DIL and 68 pin PLCC Philips parts
- - 748, 749, 750, 751, 752, 451, 453, 552
- LCPx5x40 - 40 pin DIL or 44 pin PLCC Philips parts
- Range further expanded by adaptors
- Low cost, board level
- - Quantasm Corp.
- ASMFLOW - produces flowchart and tree diagrams from source
- code, register usage analysis, Xref, timing info
- - TCG
- EPROM emulator
- Atmel 2051 programmer
- - U S Software
- USNET - TCP/IP networking suite
- USFiles - file system
- GOFAST - floating point library
- - Xicor
- SLIC2E microperipherals - wires up directly to an 8051 and
- needs no glue logic, contains:
- - 8K x 8 EEPROM in individual 4K segments
- - 2 8-BIT I/O ports
- - 16 8-BIT RAM registers
- - Integrated Interrupt Controller Module
- - Internal programmable address decoding
- - code loaded at the factory allowing users to
- download programs into EEPROM
- Development Support package includes a DATA BOOK, a
- SAMPLE of the CHIP (PDIP or PLCC, your choice) and PC
- compatible software for downloading and testing your
- programs. $15
- Development system includes a populated board. $180
-
-
- 2500 A.D. 109 Brookdale Ave., Box 480, Buena Vista, CO 81211
- (719)395-8683
-
- Ackerman Computer Sciences (ACS)
- 4276 Lago Way, Sarasota, FL 34241
- (813)377-5775 Fax: (813)378-4226
-
- Advanced Educational Systems (AES)
- 1407 North Batavia Street, Orange, CA 92677
- (800)730-3232 (714)744-0981 Fax: (714)744-2693
-
- Advanced Micro Devices
- 901 Thompson Place, PO Box 3453
- Sunnyvale, CA 94088-3000
- (408)732-2400
-
- Advanced Microcomputer Systems, Inc.
- 1321 NW 65th Place, Fort Lauderdale, FL 33309
- (305)975-9515 Fax: (305)975-9698
-
- Advanced Micro Solutions
- 1033 S Imperial Dr., Hartland, WI 53029
- (414)367-3577
-
- American Automation
- 2651 Dow Avenue, Tustin, CA 92680
- (714)731-1661
-
- AM Research 4600 Hidden Oaks Lane, Loomis, CA 95650
- (800)949-8051 (916)652-7472 Fax: (916)6642
- BBS: (916)652-7117
- Email: support@amresearch.com
- http://www.amresearch.com
-
- Applied Digital Research Ltd.
- P.O. Box 6480, Wellesley St, Auckland, NEW ZEALAND
- +64 9 480-8827
- Email: rossmcm@adr.co.nz
- Compuserve: 100351,716
- WWW: http://www.he.net/~adr/
-
-
-
- Applied Microsystems
- 5020 148th Ave. N.E., PO Box 97002
- Redmond, WA 98073-9702
-
- Archimedes Software
- 2159 Union St., San Francisco, CA 94123
- (415)567-4010
- WWW: http://www.archimedes.com/devtools
-
- Ashling Microsystems Ltd
- Ireland Plessey Technological Park
- Limerick, Ireland
- +353 61 334466 Fax: +353 61 334477
- United Kingdom Butler House
- 19-23 Market Street
- Maidenhead, Berkshire, UK
- +0628 773070 Fax: 0628 773009
-
- Atmel 2125 O'Nel Drive, San Jose, CA 95131
- (800)365-3375 (408)441-0311 Fax: (408)436-4300
-
- Avocet Systems 120 Union St., Rockport, ME 04856
- (800)448-8500 (207)236-9055 Fax: (207)236-6713
-
- Binary Technology, Inc.
- PO Box 541, Carlisle, MA 01741
- (508)369-9556 Fax: (508)369-9549
-
- Blue Earth Research
- 165 W. Lind Ct., Mankato, MN 56001-0400
- (507)387-4001 Fax: (507)387-4008
- BBS: (507)387-4007
-
- Blue Ridge Micros
- 2505 Plymouth Rd., Johnson City, TN 37601
- (615)335-6696 Fax: (615)929-3164
-
- BSO/Tasking
- International 333 Elm Street, Dedham, MA 02026-4530
- (800)458-8276 (617)320-9400 Fax: (617)320-9212
- Europe Tasking Software BV
- P O Box 899, 3800 AW Amersfoort, Netherlands
- +31 33 558584 Fax: +31 33 550033
-
- Business Data Computers
- P.O. Box 1549, Chester, CA 96020
-
- Byte-BOS Integrated Systems
- P.O. Box 3067, Del Mar, CA 92014
- (800)788-7288 (619)755-8836
-
- CG Microsystems
- http://home.earthlink.net/~cgmicro/
-
- ChipTools Inc (905)274-6244 Fax: (905)891-2715
- Email: chiptool@hookup.net
- Web: http://www.chiptools.com/
-
- Circuit Cellar Inc.
- 4 Park St., Vernon, CT 06066
- (203)875-2751 Fax: (203)872-2204
-
- Creative Applications Engineering, Inc
- Ed Carryer
- (415)494-2363 BBS: (415)494-8463
-
- Crossware Products
- St John's Innovation Centre
- Cowley Road, Cambridge, CB4 4WS, UK
- +44 1223 421263 Fax: +44 1223 421006
- Email: sales@crossware.com
- Web: http://www.crossware.com
-
- Custom Computer Consultants
- 1807 Huron River Drive, Ypsilanti, MI 48197
-
- Cybernetic Micro Systems
- Box 3000, San Gregorio, CA 94074
- (415)726-3000
-
- Dallas Semiconductor
- 4401 S. Beltwood Parkway, Dallas, TX 75244-3292
- (214)450-0448 Fax: (214)450-3715
- International: (214)450-5351
- Orders: (800)336-6933
- Email: micro.support@dalsemi.com
- Web: www.dalsemi.com
-
- DataCraft International
- 2828 Ione Dr., San Jose, CA 95132
- (800)873-3709 (408)259-4866
-
- Data Sync Engineering
- 40 Trinity St., Newton, NJ 07860
- (201)383-1355 Fax: (201)383-9382
- Email: sales@datasynceng.com
- Web: http://www.datasynceng.com
-
- DataRescue sprl
- 110 route du Condroz, 4121 Neupre Belgium
- Web: http://www.datarescue.com
-
- Dunfield Development Systems
- P.O. Box 31044, Nepean, Ontario Canada K2B 8S8
- (613)256-5820 Fax: (613)256-5821
- BBS: (613)256-6289
- Web: http://www.dunfield.com
- Email: General information: info@dunfield.com
- Sales inquiries/Administration: sales@dunfield.com
- Technical inquiries/Support tech@dunfield.com
- Old Email address: ddunfield@bix.com
-
- EE Systems 50935 Hill Dr., Elkhart, IN 46514
- (219)296-1754 Fax: (219)522-4271
-
- Electronic Product Design, Inc.
- 6963 Bluebelle Way, Springfield, OR 97478
- (503)741-0778
-
- Embedded System Products (formerly A.T. Barrett and Associates)
- 11501 Chimney Rock, Houston, TX 77035-2900
- (800)525-4302 (713)728-9688 Fax: (713)728-1049
-
- Emulation Technology, Inc.
- 2344 Walsh Avenue, Bldg. F, Santa Clara, CA 95051
- (408)982-0660 Fax: (408)982-0664
- Email: et@pmail.emulation.com
- WWW: http://www.emulation.com
- FTP: ftp.emulation.com
-
- Exor Inc.
- 4740T Interstate Dr., Cincinnati, OH 45246
- (513)874-4665 Fax: (513)874-3684
-
- Feger + Co., Hardware + Software Verlags OHG
- Marienstrasse 1, D-83301 Traunreut, Germany
-
- Forth, Inc. 1-800-55FORTH
- http://www.earthlink.net/~forth
-
- Forth Systeme P.O. Box 1103, Breisach, Germany
- 7767-551
-
- Franklin Software
- (408)296-8051
-
- HBI Limited
- 6F, 1 Fleming Road, Hong Kong
- 852-891-3673 Fax: 852-834-9748
-
- Hewlett-Packard 1501 Page Mill Rd., Palo Alto, CA 94304
-
- HiTech Equipment Corp.
- 9400 Activity Rd., San Diego, CA 92126
- (619)566-1892 Fax: (619)530-1458
- Email: info@hte.com ftp: ftp.hte.com
-
- Hi-Tech Software
- PO Box 103, Alderly QLD 4051, Australia
- (+61-7) 300 5011 Fax: (+61-7) 300 5246
- BBS: +61 7 3300 5235
- Email: hitech@hitech.com.au
- WWW: http://www.hitech.com.au/
-
- Hitex
- North America HiTOOLS Inc., 2055 Gateway Place, Suite 400
- San Jose, CA 95110
- (408) 451 3986 Fax: (408) 441 9486
- http://www.hitex.com info@hitex.com
- Germany Greschbachstr 12, 76229 Karlsruhe
- 0721/9628-0 Fax: 0721/9628-149
- info@hitex.ti.ba-karlsruhe.de
- http://www.ba-karlsruhe.de/BA/firmen/hitex
- United Kingdom Sir William Lyons Road, Science Park
- Coventry CV4 7EX
- +0203 692066 Fax: +0203 692131
-
- Huntsville Microsystems
- 4040 S. Memorial Parkway, PO Box 12415
- Huntsville, AL 35802
-
- IAR Systems Software
- North America One Maritime Plaza, Suite 1770
- San Fransisco, CA 94111 USA
- (415)765-5500 Fax: (415)765-5503
- Sweden IAR Systems AB
- Box 23051
- S-750 23 Uppsala, Sweden
- +46 18 16 7800 Fax: +46 18 16 7838
- Germany IAR Systems GmbH
- Brucknerstrasse 27
- D-81677 Munchen, Germany
- +49 89 470 6022 Fax: +49 89 470 9565
- United Kingdom IAR Systems Ltd
- 9 Spice Court
- Plantation Wharf, York Rd
- London SWII 3UE, England
- +44 71 924 3334 Fax: +44 71 924 5341
-
- Intel Corporation
- 3065 Bowers Ave., Santa Clara, CA 95051
- Technical Help: (800)628-8686 (USA/Canada only)
- 5 am to 5 pm PST
- Email: james_sampson@ccm.hf.intel.com
- Faxback support: (800)628-2283 (USA/Canada)
- touch tone phones only
- Will only FAX to USA/Canada locations
- English or Japanese support is available
- BBS: (916)356-3600 24 Hr.
- Auto config: 1200 thru 14.4K Baud
-
- Intellimap Engineering
- 1140 Morrison Dr., Suite 222
- Ottawa Ontario Canada K2H 8S9
- (613)829-3196 Fax: (613)820-1773
-
- Intermetrics Microsystems Software, Inc.
- 733 Concord Ave., Cambridge, MA 02138
- (617)661-0072 Fax: (617)868-2843
-
- Iota Systems, Inc.
- 924 Incline Way, Suite N / POB 8987
- Incline Village, NV 89452-8987
- (702)831-6302 Fax: (702)831-4629
-
- Integrated Silicom Solution
- 2231 Lawson Lane, Santa Clara, CA 95054
- (800)379-4774 Fax: (408)588-0806
-
- J & M Microtek, Inc.
- 83 Seaman Rd., W Orange, NJ 07052
- (201)325-1892 Fax: (201)736-4567
-
- JMI Software Systems, Inc.
- P.O. Box 481, 904 Sheble Lane, Spring House, PA 19477
- (215)628-0840 Fax: (215)628-0353
-
- KC Automation GmbH (support for Sysoft products)
- Alfredo Knecht
- CH-6991 Neggio, Switzerland
- Fax: ++41-91591149
- Email: akne@tinet.ch
-
- Keil Elektronik GmbH
- Europe Bretonischer Ring 15
- D-85630 Grasbrunn b. Muenchen, Germany
- 49 89 / 46 50 57 Fax: 49 89 / 46 81 62
- North America Keil Software
- 16990 Dallas Parkway, Suit 120, Dallas, TX 75248
- (800)348-8051 (sales and tech support)
- (214)735-8052 Fax: (214)735-8055
- CompuServe: 71715,1604
- BBS: (214)713-9883
- Web: http://www.keil.com/
- FTP: ftp://ftp.keil.com/
-
- Kontron Electronics
- D-8057 Eching/Munich
- Oskar von Miller Str. 1, Germany
- (0 81 65) 77-0
-
- Lakeview Research (Jan Axelson)
- 2209 Winnebago St., Madison, WI 53704
- (608)241-5824
- Email: jaxelson@lvr.com
- WWW: http://www.lvr.com/
-
- Lauterbach Datentechnik GmbH
- Europe Fichtenstr. 27, D-85649 Hofolding, Germany
- ++49 (0)8104 8943 31 Fax: ++49 (0)8104 8943 49
- Compuserve: 100272,507
- Email: sales@lauterbach.com
- WWW: http://www.lauterbach.com
- USA Lauterbach Inc.
- 945 Concord Street, Framingham,MA 01701
- (508)620-4521 Fax: (508)620-4522
-
- Lear Com Company
- 2440 Kipling St. Suite 206, Lakewood, CO 80215
- (303)232-2226 Fax: (303)232-8721
-
- Logical Systems Corporation (Disassembler, Simulator)
- Micro Dialects, Inc.
- POB 30014, Cincinnati, OH 45230
- (513)271-9100
-
- Logisoft Box 61929, Sunnyvale CA 94086
- (408)773-8465 Fax: (408)773-8466
-
- L.S. Electronic Systems Design
- 2280 Camilla Rd., Mississauga, Ontario
- Canada L5A 2J8
- (905)277-4893 Fax: (905)277-0047
-
- Lumino B.V
- Web: http://www.lumino.nl/lumino/
-
- Mandeno Granville Electronics, Ltd
- 128 Grange Rd., Auckland 3, New Zealand
- +64 9 6300 558 Fax: +64 9 6301 720
-
- Matra Semiconductor
- 2840-100 San Tomas Expressway, Santa Clara, CA 95051
- (408)986-9000
-
- MDL Labs
- 1073 Limberlost Court, Columbus, OH 43235
- Tel/Fax: 614-431-2675
- Email: arl@infinet.com
-
- MetaLink Corporation
- North America 325 E. Elliot Road, Chandler, AZ 85255
- (800)638-2423 (602)926-0797
- Fax: (602)926-1198
- Europe MetaLink Europe GmbH
- Westring 2, 8011<85614>
- Kirchseeon-Eglharting, Germany
- (08091)2046 Fax: (08091)2386
-
- Micro Computer Control Corporation
- PO Box 275, 17 Model Ave., Hopewell, NJ 08525
- (609)466-1751 Fax: (609)466-4116
- BBS: (609)466-4117
- Email: 73062.3336@compuserve.com
-
- Micro Future 40944 Cascado Place, Fremont, CA 94539
- (510)657-0264 Fax: (510)657-5441
- BBS: (510)657-5442
-
- MicroMint 4 Park St., Vernon, CT 06066
- (203)875-2751 Fax: (203)872-2204
-
- Microtek International, Inc.
- North America Microtek International, Inc.
- 3300 N.W. 211th Terrace, Hillsboro, OR 97124
- (503)645-7333 Fax: (503)629-8460
- Europe Microtek Electronics Europe GmbH
- Starnberger Strasse 22, 82131 Gauting bei Munchen
- Germany
- +49(89)893139-30 Fax: +49(89)893139-50
-
- MPE: MicroProcessor Engineering Ltd.
- 133 Hill Lane, Shirley, Southampton SO1 5AF U.K.
- +44 1703 631441 Fax: +44 1703 339691
- Email: mpe@mpeltd.demon.co.uk
- sales@mpeltd.demon.co.uk
- 70730.3576@compuserve.com
-
- New Micros of Dallas Texas
-
- Nohau Corporation
- 51 E. Campbell Ave., Campbell, CA 95008
- (408)866-1820
- (408)378-2912 (24 hr. information center)
- Fax: (408)378-7869
- Email: nohau@shell.portal.com
- WWW: http://www.nohau.com/nohau
-
- Offete Enterprises, Inc.
- 1306 South B Street, San Mateo, CA 94402
- (415) 574-8250
-
- Okapi Systems (206)258-1163
-
- Onset Computer Corporation
- 199 Main St., P.O. Bos 1030
- North Falmouth, MA 02556-1030
- (508)563-9000 Fax: (508)563-9477
-
- Orion Instruments, Inc.
- 1376 Borregas Avenue, Sunnyvale, CA 94089
- (408)747-0440 Fax: (408)747-0688
- Email: info@oritools.com
- http://www.oritools.com
-
- Orion Instruments
- 180 Independence Drive, Menlo Park, CA 94025
- (800)729-7700 Fax: (415)327-9881
-
- Parallax, Inc. 6200 Desimone Lane, #69A, Citrus Heights, CA 95621
- (916)721-8217
-
- Philips Microcontroller Product Group
- 811 East Arques Ave. / POB 3409
- Sunnvale, CA 94088-3409
- Technical documentation:
- Sunnyvale, CA - (800)447-1500 Fax: (408)991-3773
- Eindhoven, Netherlands - Fax: 31-40-724825
- Technical questions:
- Sunnyvale, CA - (408)991-3518
-
- Production Languages Corporation
- P.O. Box 109, Weatherford, TX 76086
- (800)525-6289 (817)599-8365 Fax: (817)599-5098
-
- Prologic Designs
- PO Box 19026, Baltimore, MD 21204
- (410)661-5950 Fax: (410)661-5950
-
- PseudoCorp 2597 Potter St., Eugene, OR 97405
- (541)683-9173 Fax: (541)683-9186
- Email: rhowden@teleport.com
- Web: http://www.teleport.com/~rhowden
-
- Quantasm Corporation
- 19672 Stevens Creek Blvd.
- Cupertino, CA 95014
- (800)765-8086 (408)244-6826 Fax: (408)244-7268
-
- Raven Computer Systems
- PO Box 12116, St. Paul, MN 55112
- (612)636-0365
-
- Rigel Corporation
- P.O. Box 90040, Gainesville, FL 32607
-
- Scientific Engineering Labs
- 255 Beacon St., Suite 3D, Somerville, MA 02143
- (617)625-0288
-
- Siemens Components, Inc.
- Integrated Circuit Division, 10950 N. Tantau Ave.
- Cupertino, CA 95014
- (800)777-4363 Fax: (708)296-4805
-
- Signetics Corporation (see Philips Microcontroller Product Group)
-
- Signum Systems Mountain View, CA (415)903-2220
- Thousand Oaks, CA (805)371-4608
-
- Software Science
- 3570 Roundbottom Rd., Cincinnati, OH 45244
- (513)561-2060 Fax: (513)271-3181
- Email: pbarnes@iglou.com
-
- Sophia Systems NS Bldg. 2-4-1, Nishishinjuku, Shinuku-ku
- Tokyo 160, Japan
- 03-348-7000
-
- Speech Technology Inc., Software Division
- 837 Front Street South, Issaquah, WA 98027
- (206)392-8150
-
- SPJ Systems 114, Chitrashala Bldg.
- 562, Sadashiv Peth
- Pune, India
- 91-212-451607 Fax: 91-212-480285
- Email: spjs@giaspn01.vsnl.net.in
- Web: http://www.prime-digest.w1.com/spj
-
- Standard Microsystems Corporation
- 80 Arkay Dr., Hauppage, NY 11788
- (516)435-6000 Fax: (516)231-6004
- WWW: http://www.smc.com
- Email: techsupport@smc.com
-
- StarCom WWW: http://www.n2.net/starcom
-
- Sun Equipment Corporation
- Lodestar Electronics Corp.
- 616 Hawick Rd., Raleigh, NC 27615
- (800)870-1955 (919)881-2141 Fax: (919)870-5720
-
- Suncoast Technologies
- P.O. Box 5835, Spring Hill FL 34606
- Voice/FAX (352)596-7599
- Email: suncoast@earthlink.net
- WWW: http://home.earthlink.net/~suncoast/
-
- Sysoft SA (closed as of 1989 - see KC Automation GmbH)
-
- Systronix Inc. 555 S. 300 E., Salt Lake City, UT 84111
- (801)534-1017 Fax: (801)534-1019
- BBS: (801)487-2778
-
- TCG
- 11 Ally22 Ln21 Pei-Ta Rd.
- Hsin-Chu City, Taiwan, R.O.C.
- (886)3-532-7372 Fax: 886-3-531-7162
- Email:ch.bbs@csie.nctu.edu.tw
- http://www.yp.at-taiwan.com/~com00121
- http://www.hth.com
-
- URDA, Inc. (800)338-0517 (412)683-8732
-
- US Software 14215 N.W. Science Park Drive, Portland, OR 97229
- (800)356-7097 (503)641-8446 Fax: (503)644-2413
- Product information available by ftp -
- ftp.netcom.com : pub/ussw
-
- Universal Cross Assemblers
- Canada
- (506)849-8952 Fax: (506)847-0681
-
- Vail Silicon Tools, Inc.
- Box 165, Pompano Beach FL 33069
- (305)491-7443 Fax: (305)974-8531
-
- Xicor
- 1511 Buckeye Dr., Milpitas, CA
- (408)432-8888 Fax: (408)432-0640
- Email: info@smtpgat.xicor.com
- http//www.xicor.com
- BBS: (800)258-8864
-
- Zax Corporation
- 2572 White Road, Irving, CA 92714
- (800)421-0982 (714)474-1170
-
- Zitek Corporation
- 1651 East Edinger Ave., Santa Ana, Ca 92705
- (714)541-2931
-
-
- 5) 8051 DOCUMENTATION
-
-
- 5.1) Periodicals that cover the 8051
-
- Various magazines and journals (journals seems to be THE popular name
- for magazines these days) provide articles from time to time on the
- 8051 family of microcontrollers:
-
- The Computer Applications Journal (Circuit Cellar Ink)
- - programming and construction articles
- - POB 7694, Riverton, NJ 08077-8784
- - FAX: (203)872-2204
- - Voice orders: (609)786-0409
- - Email orders: ken.davidson@circellar.com
- - BBS: (203)871-1988
- WWW: http://www.circellar.com
- - $21.95, $31.95 surface Canada and Mexico,
- $49.95 air all other countries
-
- Computer Design
- - industry announcements and trends
- - One Technology Park Drive, P.O. Box 990, Westford, MA 01886
- - (508)692-0700
-
- The Computer Journal
- - programming and construction articles, specializing in 8-bit
- and older computers (Z80-CP/M, TRS-80, Xerox, microcontrollers,
- etc)
- - programming and construction articles, specializing in old
- computers (S-100, CP/M, TRS-80, Xerox, Adam, etc)
- - P.O. Box 3900, Citrus Heights, CA 95611-3900
- - (800)424-8825 or (916) 722-4970 FAX: (916) 722-7480
- - BBS: (916) 722-5799
- - Web: http://www.psyber.com/~tcj
- - Email: tcj@psyber.com
- Dave Baldwin: dibald@netcom.com
- Bill Kibler: kibler@psyber.com
- - USENET newsgroup alt.tcj
-
- Dr. Dobbs Journal
- - programming articles, concepts, and designs
- - 411 Borel Ave., San Mateo, CA 94402
- - (415)358-9500
-
- EDN
- - Cahners Publishing Company
- 8773 South Ridgeline Blvd., Highlands Ranch, CO 80126-2329
- - annual microprocessor and DSP editions
- - http://www.ednmag.com/
-
- Electronic Engineering Times
- - industry announcements and trends
- - FREE to qualified engineers and managers involved in
- engineering decisions
- - Fulfillment Dept., PO Box 9055, Jericho, NY 11753-8955
- - FAX: (516)733-6960
-
- Electronics Now
- - construction articles
- - Box 55115, Boulder, CO 80321-5115
- - $19.97 one year
-
- Elektor Electronics
- - programming and construction articles
- - World Wide Subscription Service Ltd
- Unit 4, Gibbs Reed Farm, Pashley Road
- Ticehurst TN5 7HE, England
- - 27 UK pounds
- or
- - Old Colony Sound Lab, P.O. Box 243, Peterborough, NH 03458
- - Tel. (603)924-6371, 924-6526
- - Fax: (603)924-9467
- - $57 USA and Canada per year
-
- Embedded Systems Programming
- - programming and systems design articles
- - Miller Freeman Publications
- - 500 Howard St., San Francisco, CA 94105
- - Miller Freeman: (415)905-2200
- - Embedded Systems Programming phone: (800)829-5537
-
- Forth Dimensions
- - monthly magazine on Forth
- - Forth Interest Group, P.O. Box 2154, Oakland, California 94621
- - (510)893-6784 Fax: (510)535-1295
- - Email: johnhall@aol.com
- - Forth Interest Group home page:
- http://taygeta.oc.nps.navy.mil/fig_home.html
-
- Inquisitor Magazine
- - If you're the type that watched Gilligan's Island for its
- socio-political insights, then you'll love a new 'zine that
- just crossed my desk - Inquisitor Magazine. It's general
- philosophy seems to be ... well, it seems to be ... uh, yeah!
- Technical in nature, bizarre, tongue in cheek, eclectic,
- electric, did I mention bizarre(?), and lots of fun. Worth
- looking at if you like the out of the ordinary. The moving
- force behind this magazine is Daniel Drennan, who seems to have
- suffered from an overdose of radiation from his computer
- monitor ;-).
- - Dan is offering issue 1 of Inquisitor for free except for
- postage ($1.00 in the United States; $2.00 for Canada and
- overseas surface mail; and $3.00 for overseas airmail). This
- issue contains plans, schematics, and troubleshooting tips for
- putting together a 8052-based microcontroller. If you're
- thinking of putting together an 8051 system, you might want to
- check this out.
- - Planetarium Station, P.O.Box 132, New York, NY 10024-0132
- - (212)595-8370
- - Email: inquisitor@echonyc.com
- - $16 per year (4 issues)
-
- Microcomputer Journal
- - programming and construction articles
- - Midnight Engineering, 1700 Washington Av., Rocky Ford, CO 81067
- - (719)254-4558 Fax: (719)254-4517
-
- Midnight Engineering
- - 1700 Washington Ave., Rocky Road, CO 81067
- (719)254-4558 Fax: (719)254-4517
-
- MW Media - Product Directories
- - 8051 Product Directory
- (survey of various 8051 products)
- - Intel Development Tools Handbook
- (survey of commercial development tools for the 8051, 8096,
- and 80186 lines of Intel microprocessors)
- - This documents could very well be a "must" if you're into
- serious development using one of these chips. If you are
- "just" a hobbyist, see how the "other half" lives.
- - other guides on Intel development tools, Embedded Intel 386,
- Intel 486/Pentium, 8051 products, Hitachi microcontroller
- development tools, AMD FusionE86, AMD 29K; low power products,
- DSP, multimedia CD
- - FREE to qualified developers
- - MW Media
- - Fairmont Plaza, 50 W. San Fernando, #675, San Jose, CA 95113
- - (408)288-4721 and (408)286-4200
- - FAX: (408)288-4728
-
- Nuts & Volts Magazine
- - A National Publication for the Buying and Selling of
- Electronic Equipment
- - 430 Princeland Court, Corona, CA 91719
- - Mailed third class, USA only: $17.00 one year
- $31.00 two years
- - Mailed first class, one year only: $34.00-USA
- $35.00-Canada/Mexico
- - Foreign/Air Mail - $70.00; Foreign/Surface - $39.00
- - (800)783-4624
- - Email: 74262.3664@compuserve.com
-
-
- 5.2) Books on the 8051
-
- 5.2.1) List of books
-
- I don't have information on all of these, only that they exist. I
- would greatly appreciate it if someone could provide a short synopsis
- and the complete book name if you are familiar with any of these
- titles.
-
-
-
- The 8051 Family of Microcontrollers
- - Richard H. Barnett
- - Prentice-Hall, 1995
- - ISBN 0-02-306281-9
-
- 8051 Interfacing and Applications
- - Applied Logic Engineering
- - 13008 93rd Place North, Maple Grove, MN 55369
- - (612)494-3704
-
- The 8051 Microcontroller
- - I. Scott MacKenzie
- - Prentice Hall
- - 2nd edition, 1995
- - ISBN 0-02-373660-7
- - includes schematics for a single-board computer,
- assembly-language source code for a monitor program, and
- interfaces to a keypad, LEDs, and loudspeaker
-
- The 8051 Microcontroller
- - James W. Stewart
- - Regents/Prentice-Hall, 1993
- - $27.50, 273 pages
- - includes many interfacing examples (switches, solenoids,
- relays, shaft encoders, displays, motors, and A/D converters)
- and a chapter on top-down design method
-
- The 8051 Microcontroller: Architecture, Programming and Applications
- - Kenneth J. Ayala
- - 241 pages, soft cover
- - 5.25" diskette with assembler and simulator
- - ISBN 0-314-77278-2, Dewey 004.165-dc20
- - West Publishing Company
- - P.O. Box 64526, St. Paul, MN 55164
- - (800)328-9352
- - see review in next section
-
- Assembly Language Programming (for the MCS-51 family)
- - F. A. Lyn
- - L. S. Electronic Systems Design
-
- Basic-52 Programmer's Guide
- - Systronix, Inc. (they also sell a Basic compiler)
-
- Beginner's Guide
- - Suncoast Technologies
-
- C and the 8051
- - Thomas W. Schultz
- - Prentice Hall
- - ISBN 0-13-753815-4
-
- Data book / Handbook / Users' Guide
- - Advanced Micro Devices
- - Dallas (User's guide for the DS5000)
- - Intel
- - Philips
- - Siemens
-
- Embedded Controller Forth for the 8051 Family
- - Academic Press (I think)
- - William H. Payne
- - uses a Forth development system available on the Internet
- (see above in the Forth software section)
-
- Embedded Systems Programming in C and Assembler
- - John Forrest Brown
- - Van Nostrand Reinhold, 1994
- - 304 pages, $49.95
- - ISBN 0-442-01817-7
- - covers Motorola and Intel processors
- - includes diskette with code from the book
- - book review in Dr. Dobb's Journal, November 1994, page 121
-
- Experimenter's guide
- - Rigel Corporation
-
- Flow Design for Embedded Systems
- - Barry Kauler
- - R&D Books / Miller Freeman (USA), 1997
- distributed in Europe by McGraw-Hill
- - ISBN 0-87930-469-3
- - http://www.rdbooks.com/
- - bundled with a sophisticated graphical diagrammer and CASE
- tool, K-Flow diagrammer, that runs on Windows 3.1 or 95
- - source code for the TERSE RTOS is supplied
-
- Introduction to Microcontroller Design, Based on the 8051 family of
- Processors
- - Business Data Computers
- - P.O. Box 1549, Chester, CA 96020
-
- The Microcontroller Idea Book
- - Jan Axelson (of Microcomputer Journal fame)
- - features the 8052-BASIC microcontroller
- - hands-on guide with complete plans (schematics, design theory,
- program listings, construction details, etc)
- - explains how to use sensors, relays, displays, clock/calendars,
- keypads, wireless links, and more
- - 1994, 273 pages, $31.95 + shipping
- - Lakeview Research, 2209 Winnebago St., Madison, WI 53704
- (608)241-5824
- - contact the author at jaxelson@lvr.com
- - WWW: http://www.lvr.com/
- - Lakeview Research's microcontroller page (resources for
- 8052-Basic projects): http://www.lvr.com/microc.htm
-
- Programming and Interfacing the 8051 Microcontroller
- - Sencer Yeralan and Ashutosh Ahluwalia
- - wealth of information, including: 8051 architecture,
- programming basics and techniques, on-chip features, building
- your own 8051 system, and interfacing to various peripherals
- - hardware experiments contains plans and code for: scanning a
- keypad, stepper motor control, a frequency generator, measuring
- light and temperature intensity (analog to digital), digital to
- analog conversion, DC motor speed regulation, interfacing to
- intelligent Liquid Crystal Displays, and implementing a
- multi-drop RS-485 network
- - accompanying diskette has an 8051 simulator and all source code
- for the projects in the book
- - must have book for the hobbyist or professional
- - $34.38, 352 pages, paperback, ISBN 0-201-63365-5
- - Addison-Wesley
-
-
- 5.2.2) Book reviews
-
- My review of the book:
- Programming and Interfacing the 8051 Microcontroller
- by Sencer Yeralan and Ashutosh Ahluwalia
-
- Addison-Wesley has just released a GREAT new book, "Programming
- and Interfacing the 8051 Microcontroller" by Sencer Yeralan and
- Ashutosh Ahluwalia. I had actually reviewed the manuscript some
- time back, and the book has now finally been released. This book
- contains a wealth of information - it answers a lot of Frequently
- Asked Questions that often appear in comp.robotics,
- sci.electronics, and comp.arch.embedded.
-
- Among the some of the basic subjects covered include: 8051
- architecture, programming basics and techniques, on-chip features,
- building your own 8051 system, and interfacing to various
- peripherals. A section on hardware experiments contains plans and
- code for: scanning a keypad, stepper motor control, a frequency
- generator, measuring light and temperature intensity (analog to
- digital), digital to analog conversion, DC motor speed regulation,
- interfacing to intelligent Liquid Crystal Displays, and
- implementing a multi-drop RS-485 network.
-
- The book comes with a diskette containing an 8051 simulator and
- all source code for the projects in the book. This is a must have
- book for the hobbyist or professional. Available for $34.38, 352
- pages, paperback, ISBN 0-201-63365-5. Run, don't walk, to your
- bookstore and get one now. I mean it, this is a great book.
-
-
- My review of the book:
- The Microcontroller Idea Book
- by Jan Axelson
-
- This book is loosely based on a series of articles Jan wrote for
- ComputerCraft magazine (now the Microcomputer Journal). If you
- are at all familiar with her work, you already realize that you're
- wasting your time by reading this review and you might as well
- just order your copy now.
-
- This is an excellent book for hobbyists and tinkerers, as it
- includes complete circuit schematics and parts lists, design
- theory, example program listings, construction and debugging tips,
- and vendor listings. The example circuits and programs are based
- on the 8052-BASIC chip (a favorite with hobbyists due to its ease
- of use), and there is a lot of material on programming in BASIC52.
- The book is [very] useful even if you use a standard 8051 part.
- Lots of different interfacing ideas including: sensors, motors,
- LEDs, LCDs, wireless links, and a LOT more.
-
- Chapter titles: microcontroller basics, inside the 8052-
- BASIC, powering up, saving programs, programming, inputs and
- outputs, switches and keypads, displays, using sensors to
- detect and measure, clocks and calendars, control circuits,
- wireless links, calling assembly-language routines, running
- BASIC-52 from external memory, related products
-
- If you are just starting out with microcontrollers, and don't have
- a clue where to start or what to control, this book is just what
- you need. As the title of the book says, it's an idea book.
-
- The Microcontroller Idea Book
- Jan Axelson
- 1994, 273 pages, $31.95 + shipping
- Lakeview Research, 2209 Winnebago St., Madison, WI 53704
- (608)241-5824
- Email: jaxelson@lvr.com
- Web: http://www.lvr.com/
-
-
- My review of the book:
- The 8051 Family of Microcontrollers
- by Richard H. Barnett
-
- This book VERY thoroughly discusses the design and implementation
- of controllers using the 8051. Dick says his book is "lots of
- meat, very little filler", but he's a bit off the mark here. What
- he means to say is this book is many large chunks of meat, no
- vegetables, and no potatoes - we are NOT talking Hamburger Helper
- here gang. The introduction alone contains circuits for 3
- controllers (one 8085 design used as a comparison). Many hardware
- and softare examples are included. Everywhere you turn in this
- book, you'll find circuit diagrams and sample code, including
- complete designs for three different microcontroller projects in
- the last chapter. Clear and in-depth coverage of interfacing and
- peripheral use leaves very little to the imagination.
-
- This is a good book for both students and professionals who are
- trying to figure out how to start designing there own
- microcontroller. Experienced hobbyists will also appreciate the
- many examples. Novices might be a bit overwhelmed by this book.
-
- The 8051 Family of Microcontrollers
- Richard H. Barnett
- Prentice-Hall, 1995
- ISBN 0-02-306281-9
-
- For more info contact the author - rbarnett@purdue.edu
-
-
- Richard Kendrick's review of the book:
- 8051 Interfacing and Applications
- from Applied Logic Engineering
-
- IN BRIEF
-
- An excellent collection of interfacing circuits and well commented
- source code in assembly. This is not a book for beginners as it
- assumes the user is very familiar with the architecture of the
- 8051 and its registers. A disk of assembly source code listings
- is included.
-
- CHAPTERS
-
- 1 - 8051 Interfacing and Applications
- 1.1 - Introduction
- 1.2 - Main System Core
- 1.3 - Simple Methods of User Input
- 1.4 - Interfacing a 16 digit keypad to the 8031
- 1.5 - Centronics Parallel Input Port
- 1.6 - Centronics Parallel Output Port
- 1.7 - Interfacing to the built-in Serial Port
- 1.8 - Interfacing to a Dual Channel UART
- 1.9 - Interfacing to an LCD
- 1.10 - Bank Selection of Memory
- - Appendix A: List of Vendors
- - Appendix B: Connection to an External Computer
- 0.1 RS-232 Serial Connection
- 0.2 Centronics Interface Cabling
-
- COMMENTS
-
- This spiral bound book is thin (74 pages) but manages to cover a
- lot of information. All of the sub-chapters have excellent code
- listings with full comments, partial schematic diagrams, and an
- occasional timing diagram. The chapter on using the serial port
- is based on the MAX232 chip becoming so popular. A table of timer
- reload values is provided to get standard baud rates but the book
- only mentions the required clock frequency of 11.0592 mHz in the
- first chapter. It also doesn't explain why a seemingly
- non-standard crystal frequency was chosen. The dual UART channel
- features the 2681 chip. The LCD chapter gives a small but
- adequate explaination of the Hitachi controller chip usage on LCD
- displays and a tiny fragment of data on display characteristics of
- LCDs. The bank selection of memory is useful showing code and
- schematic using five 62256 chips for 160K bytes of read/write
- memory.
-
-
- Richard Kendrick's review of the book:
- Microprocessor/Controller Design
- by Wayne P. Lichti of Business Data Computers
-
- A lame little book better bypassed. As an introductory text,
- Kenneth Ayala's book is the winner hands down. This book is a
- poor rehash of the same information in Intel's or AMD's data book.
- There is one code listing in the book and does little more than
- tell the reader that the 8051 family of processors exist.
-
- This book is 134 pages of wasted time. The schematics were
- printed on a dot matrix printer and poorly reproduced. Many of
- the sections are just a table or a paragraph with two or three
- sentences. Use Ayala's book, you'll learn a lot more useful
- information.
-
-
- John Little's review of the book:
- The 8051 Microcontroller: Architecture, Programming and Applications
- by Kenneth J. Ayala
-
- IN BRIEF
-
- A good book for those who are already moderately familiar with
- assembly language programming and wish to learn more about 8051
- specifics. Has many example listings, all of which are very well
- documented in terms of comments and explanations in the text. NOT
- a book for absolute beginners OR hardware hackers looking for
- circuits and applications.
-
-
- CHAPTERS
-
- 1 - Microprocessors and Microcontrollers.
- 2 - The 8051 Architecture.
- 3 - Moving Data.
- 4 - Logical Operations.
- 5 - Arithmetic Operations.
- 6 - Jump and Call Opcodes.
- 7 - An 8051 Microcontroller Design.
- 8 - Applications.
- 9 - Serial Data Communication.
- A - 8051 Operational Code Mnemonics.
- B - How to Use the Assembler.
- C - how to Use the Simulator.
- D - The 8255 Programmable I/O Port.
- E - Control Registers.
-
-
- COMMENTS
-
- In his preface to the book, Mr Ayala states that that it is
- intended for "... a diverse audience. It is meant for use
- primarily by those who work in the area of electronic design and
- assembly language programming of small, dedicated computers".
- Later, he goes on to refer the reader to the manufacturer's data
- books for more information on hardware issues. This sets the tone
- for the whole book, which is very much software orientated.
-
- Anyone buying the book expecting to find reams of circuit diagrams
- and details on how to build their own 8051 driven, automated car
- assembly plant will be disappointed. In fact, most of the circuits
- and applications shown are very much conceptual, with generic,
- black-box outlines for most of the components. The single
- exception to this is a fairly complete system (8031, EPROM & RAM,
- jumper selectable memory sizes) in the chapter on microcontroller
- design. Even then, there's no I/O shown (the txd/rxd are
- unconnected).
-
- Having said that, Mr Ayala does do a fairly thorough job of
- working through the peculiarities of the 8051, with detailed
- coverage of memory organisation, bit/byte level operations,
- timers, interrupts and, at the end of the book, a complete chapter
- on 8051 communication modes. Each area has relevant assembly
- language listings, along with a detailed explanation of the
- workings of the code.
-
- Each section also has highlighted "comment" passages which point
- out common pitfalls and reinforce critical points. Each chapter
- ends with a summary of the important points covered and a series
- of ten to twenty pertinent problems for the reader to solve. For
- the most part, the answers to the problems can be found in the
- text. In later chapters though, the reader is asked to elaborate
- on various programming themes and to write assembly language
- programs of their own to perform various tasks. The problems range
- from the bland "Name twenty items which have a built in
- microcontroller" (Chapter 1), to the more esoteric "Compose a
- 40-value lookup table that will generate a sawtooth wave using a
- D/A converter" (Chapter 8).
-
- It should be noted that the book is not aimed at the complete
- novice. For instance, although assembly language listings are used
- throughout, it is not until Appendix B that the reader finds out
- what the assembler actually does and how the listings relate to
- machine code. Even then, the complete neophyte will be left with a
- rather empty feeling, as there are pages and pages of code, the
- schematic for a (more or less) complete system and instructions on
- how to use the assembler, but no information at all on how the
- object code should be utilised (other than with the included
- simulator - see below). If you don't already know how to blow an
- EPROM, you're in trouble.
-
- The diskette which accompanies the book contains the PseudoSam
- assembler (which is used throughout) and an 8051 simulator. Both
- being intended for use on a PC (it's a measure of how fast the
- computer industry is evolving that a 5.25 inch diskette seems a
- little archaic just three years after the publication date of the
- book). The PseudoSam assembler ran fine on my system and I was
- able to assemble several of the examples from the book and
- successfully run them on a small, home-brew 8031 system. I was
- totally unable to get the simulator to run. However, as it failed
- on several different systems I'm prepared to believe that my
- particular copy of the diskette was at fault.
-
-
- SUMMARY
-
- All in all, a recommended book for those who have previous
- assembly language experience and wish to get to know details
- relating to the 8051 microcontroller. While the internal
- architecture of the chip is covered in detail, external hardware
- and peripheral interfacing is not. Only the basic 8051/31 is
- covered, with little mention of the other variants available.
- There are extensive listings in the text, covering routines for
- handling keyboards and displays, as well as timing loops and
- communications. A large, clear typeface ensures that all of the
- listings are completely legible. The layout and presentation of
- the book is excellent, with a consistent, unambiguous style used
- throughout.
-
-
- Tim McDonough's review of the book:
- C and the 8051: Programming for Multitasking
- by Thomas W. Schultz
-
- Schultz's book provides a brief overview of the 8051 architecture
- but is primarily a discussion of multi-tasking software in an 8051
- environment. He presents quite a few code examples. The examples
- and the accompanying text show comparisons of how to accomplish
- things in assembler, PLM, and C. The C examples presented are
- based on Version 3 of the Franklin compiler but should be easily
- understandable by anyone already familiar with C.
-
- Later chapters in the book deal with more advanced topics.
- Chapters are devoted to Real-Time Ideas, Timing and Scheduling,
- Communications and Synchronization, Interrupts, Priority, and
- Context, and Distributed Systems. The Real-Time Ideas chapter
- briefly discusses six Real Time Operating System (RTOS) kernels
- offered by several vendors. Later in the book some examples are
- given to simple applications with and without using a RTOS.
-
- All in all, a useful addition to my technical library. It is one
- of the few 8051 books that goes beyond the basics and would be
- particularly of interest to those contemplating their first
- non-trivial 8051 design.
-
-
- My review of the book:
- Basic-52 Programming
- by Bruce Boyes, Will Bagley, and Scott Kendall of Systronix, Inc.
-
- A must have book for Basic-52 programmers. The book starts out
- with an introduction to BASIC-52 programming, program editing, and
- techniques. About a hundred of the book's 160 pages are a
- detailed and quite useful reference of the commands and
- statements. Six appendixes covering advanced topics round out
- this most useful volume. A quick index to commands, operators,
- and instructions printed on the back cover of the book is a nice
- finishing touch. For only $20.00, it's a bargain at twice the
- price. Well, let's not get carried away, but if you're
- programming in Basic-52, this book is indispensible.
-
-
- 5.3) Miscellaneous documentation on the 8051
-
- Advanced Micro Devices
- - application notes
-
- Intel Corporation
- - application notes
-
- L.S. Electronic Systems Design
- - application notes (source code on diskette and schematics)
-
- Philips Semiconductors (Signetics)
- - application notes
-
- Software Science
- - application notes
-
-
- __________________________________________________________
-
- I disclaim everything. The contents of this article might be totally
- inaccurate, inappropriate, misguided, or otherwise perverse - except for
- my name (hopefully I got that right).
-
- Copyright (c) 1997 by Russ Hersch, all rights reserved.
- This FAQ may be posted to any USENET newsgroup, on-line service, or BBS
- as long as it is posted in its entirety and includes this copyright
- statement.
- This FAQ may not be distributed for financial gain.
- This FAQ may not be included in commercial collections or compilations
- without express permission from the author.
-
- -----------------------------------
- Russ Hersch - russ@shani.net
-