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Path: senator-bedfellow.mit.edu!enterpoop.mit.edu!usc!cs.utexas.edu!wotan.compaq.com!moxie!lobster!antimatr!faq-rt From: faq-rt@antimatr.hou.tx.us (Mark Whetzel) Newsgroups: comp.sys.ibm.pc.rt,comp.answers,news.answers Subject: COMP.SYS.IBM.PC.RT: IBM RT - Hardware - Frequently Asked Questions Summary: This posting contains a list of Frequently Asked Questions (and their answers) and general information, hints and tips for using IBM RT 615x computers. Keywords: IBM RT PC hardware FAQ 6150 6151 6152 AIX VRM AOS MACH PICK Message-ID: <ibm-rt-hw-930628@antimatr.hou.tx.us> Date: 28 Jun 93 12:01:00 GMT Expires: 1 Aug 93 00:30:00 GMT Sender: markw@antimatr.hou.tx.us Reply-To: faq-rt@antimatr.hou.tx.us Followup-To: comp.sys.ibm.pc.rt Lines: 1752 Approved: news-answers-request@MIT.Edu Supersedes: <ibm-rt-hw-930614@antimatr.hou.tx.us> Xref: senator-bedfellow.mit.edu comp.sys.ibm.pc.rt:3494 comp.answers:1139 news.answers:9779 Archive-name: ibm-rt-faq/hardware Last-modified: Mon Jun 28 06:02:50 CDT 1993 Version: 1.2 Frequently Asked Questions for: IBM RT system hardware Posted around the first of each month to comp.sys.ibm.pc.rt. This is the first of three FAQ's dedicated to the IBM RT processor. The other FAQ's are dedicated to aspects of the RT processor when used with different operating systems. AIX issues will be filed in the archive name: ibm-rt-faq/aix AOS issues will be filed in the archive name: ibm-rt-faq/aos [ Note: The AIX and AOS FAQ's are not yet ready.. sorry for the delay in getting them posted... MW ] This particular file will cover general hardware questions about the IBM RISC processor known as the RT PC. The IBM RT is known also as an IBM model 6150, 6151 or 6152 machine. The hardware information presented here is intended to be independent of the operating system that is running on the system. There are several companion FAQ's I have compiled on operational differences of the RT hardware and software when being used with the different operating systems available. If you notice a particular hardware feature that is only supported under one particular OS, let me know, and I will move it to the appropiate OS specific list. This list is organized as a digest for newsreaders that can handle it. Each "digest page" generally covers one topic or Question/Answer . You can jump to a particular topic by searching for that index key (such as H.10) in position 1 of this list. Direct inclusions of information by some submitters is framed with a line of "==**==**" repeating across the page. In order to build up a better FAQ base, E-mail your contributions. I will respond back to you via mail on your submission. This FAQ is a work in progress. Some entries are incomplete, and other information may be missing. Places with ????? denote areas needing more work or information. Areas that I have made personal comments on are enclosed in square brackets []. For AIX RT submissions E-mail to: aix-rt@antimatr.hou.tx.us For AOS RT submissions E-mail to: aos-rt@antimatr.hou.tx.us For MACH RT submissions E-mail to: mach-rt@antimatr.hou.tx.us For general Q&A submissions (hardware and other stuff) E-mail to: faq-rt@antimatr.hou.tx.us Input is always welcomed for making this a better list. Style, grammar and spelling notes are also welcome. Sometimes it seems that my brain operates faster than my fingers can type. :-) Other comments and correctons should be sent to the author: Mark Whetzel DOMAIN addr: markw@antimatr.hou.tx.us BANG address: ..!menudo!lobster!antimatr!markw Daytime work number 8AM-5PM CST Mon-Fri VOICE: (713) 963-2544 Changes for this posting: 1) More RT history notes. 2) Corrected some phone numbers 3) NSFnet information 4) Minor reformatting to some sections. ------------------------- Index to the IBM RT - Hardware FAQ. 1.0 General Hardware questions H.1 What is an IBM RT and some of it's history? H.2 What types of processors were made? H.3 How fast are the different models of RT? H.4 Can you upgrade from one processor type to another? H.5 How can I tell what kind of processor type is installed? H.6 Where can I get parts for RT's? H.7 What adapter cards are supported in an RT running AIX V2. H.8 What IBM perhiperials were available? H.9 What cables are available? H.10 What is the pinout of the 6150 serial ports? How do I make my own RS232 cables compatible for use with AIX. H.11 What is the pinout of the 6150/6151 Mouse/Tablet port? H.12 What is the pinout of the 6150/6151 keyboard port? H.13 Can I use a Non-RT keyboard on an RT? H.14 How do I get a parallel printer attached to an RT? H.15 What are the switches on the Megapel adpater for? Technicial information on Megapel adapter and display. H.16 AT Co-Processor information. H.17 How can I get the maximum data on a 6157 tape drive? (Also covers different types of tapes to use. flags for 'backup' and 'tar'.) H.18 What hard disks can be used in an RT? What value is the ESDI terminator resistor for an E70 drive? H.19 What is the difference between an R70 and an E70 disk drive? H.20 What are the characteristics of the various IBM RT disk drives? H.21 What SCSI devices can be attached? H.22 What do the LED's mean during power on. H.23 What does LED code xx mean (during runtime)? H.24 What is different about the RT I/O slots. What cards will run in slot 8. H.25 How do I run diagnostics. H.26 Serial port cards maximums and limitations. H.27 What are the switches on the 3278/79 adpater? H.28 Jumper location and information on AT Fixed disk adapter. H.29 Jumper locations and information on ESDI adapter. H.30 Jumper locations and information on EESDI adapter. H.31 Jumper locations and information on the 'PORTED' EESDI adapter. H.32 IBM 9332 Disk drive information. H.999 Acknolowgements and copyright information. ------------------------- H.1 - What is an IBM RT and some of it's history? The IBM RT is a RISC based processor designed by IBM, and unique to that platform. The RT was first announced by IBM in January 1986. The processor is generally refered to as 032 processor. In some documentation it is also refered to as the 'ROMP' processor. [ I have had some excelent feedback on the ROMP name and a little on the RT's history. See the submtters below my notes. More information on the RT's history is always welcomed. - MW ] The RT PC Advanced System Processor has a 32-bit Reduced Instruction Set Computer (RISC) architecture developed by IBM and implemented in a 1-micron CMOS technology. It has sixteen 32-bit general purpose registers and uses 32-bit addresses and data paths. The microprocessor is controlled by 118 simple 2- and 4-byte instructions. An IBM-developed advanced memory management chip provides virtual memory address translation functions and memory control. It provides a 40-bit virtual address structure capable of addressing one terabyte of virtual memory. Internal processor organization enables the CPU to execute most register-to-register instructions in a single cycle. The model 115/125 RT PC with their FAST ECC memory, is capable of providing the processor with a 32-bit word of data plus ECC each 100 nsec cycle. This memory consists of 40 1-megabit IBM RAM chips. These chips are the same megabit technology used in the IBM 3090. The model 130/135 version of the processor uses an 80 nsec cycle time with the maximum of 16 Megabytes of real memory installed on the processor card. The IBM RT has had a varied life even from it's initial announcement. Most industry watchers considered the RT as "not enough power, too high a price, and too late". Many thought that the RT was part of IBM's Personal Computer line of computers. This confusion started with it's initial name, "IBM RT PC". Initially, it seemed that even IBM thought that it was a high end Personal Computer given the initiallly stunning lack of support that it received from IBM. This confusion even was reflected in the design of the manuals for the RT, they are the same odd size three ring binder (except longer), with slip cases like the original IBM PC manuals. Condidering the RT's modest processing power (when first announced) coupled with announcements later that year by some other workstation vendors made most industry analysists question IBM's directions. To be fair, AIX for the RT was IBM's first *public* foray into UNIX. IBM had a very tough task ahead of them, completely changing how traditional UNIX design had been done. The VRM (Virtual Resource Manager) is the real operating system of the RT, and controls all the hardware. AIX is running as a guest OS, in a similar fashion to the VM product of IBM's mainframe processors. The lack of software packages and IBM's somtimes lackluster support of AIX, plus the sometimes unusual changes from traditional UNIX operating system defacto standards caused most software suppliers to be slow to embrace the RT and AIX. The RT found it's home mostly in the CAD/CAM and CATIA areas, with some inroads into the Scientific and educational areas, especially after the announcement of AOS and substantial discounts for the Educational community. The RT also found use as shopping store control systems, and interface system between IBM's larger mainframes and some of its point of sale terminals, store control systems and also machine shop control systems. One of the RT's claim to fame was it's use as packet switch hubs for part of the internet backbone, utilizing specially designed hardware communication sub-processors and specially written operating system control software. [More information on this would be welcomed! Start/stop dates, number of machines used at one time, ect.. - MW] ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== Submitter: David Snearline <davids@engin.umich.edu> NSFnet used the 6151 desktop model RT's for the NSS's (Nodal Switching Stations). Each RT in the group had two interface cards: one IBM token ring, and one other interface (ethernet, T1, etc). A typical NSS would look like: +---- local ethernet | +---+ | | IBM RT | | +---+ | | | | +---+ IBM RT | +--| | Token Ring ----> +----| |---- T-1 to another NSS +---+ (more RTs here) Except for backup links in some places, most of the RT NSS's have been replaced by RS/6000's, which have all of the cards in one workstation. Most of the RTs are sitting around, waiting to be used for parts or dismantled. ANS/Merit could probably give you more details on when this switchover occurred, but I believe that November 1992 was one of the official changeover dates. ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== Submitter: <gerald@vnet.IBM.COM> (Gerald Oskoboiny) Last night I was reading "Computer Wars" by Charles H. Ferguson and Charles R. Morris (ISBN 0812921569, Random House, 1993), and it has the code names of the RT and other projects. I forget most of the details, but it is very interesting reading. It explains how IBM had RISC technology in 1968 but mismanaged it until the disappointing RT was released in 1986. As far as "history of the RT" goes, this book explains it all. ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== Submitter: mike@neutron.amd.com (Mike Johnson) Newsgroup: comp.arch Subject: Re: First Commercial RISC Computer That's Research OPD Mini Processor. OPD = Office Products Division. ROMP was originally designed to be used in office products, primarily text editing systems such as the IBM Office System/6 and DisplayWriter. The architectural work started in late spring of 1977, as a spin-off of the T.J. Watson Research 801 work (hence the "Research" in the acronym). Most of the architectural changes were for "cost reductions," such as adding 16-bit instructions for "byte-efficiency"--a main concern at IBM at the time. The first chips were working in early 1981. The delay from architecture to working chips was caused mainly by building two models of the chip in TTL: an emulator that just executed the instruction set and a nodal-equivalent model that was more-or-less an exact duplicate of the chip (about 6000 7400-series DIPs plus a number of IBM bipolar gate arrays and static RAMs). The delay was also caused by two major revs to the architecture: one change to a 32-bit architecture from a 24-bit architecture (I'm serious), and another to support demand paged virtual memory (the implementation supported out-of-order loads, so precise interrupts were hard to come by). ROMP was arguably the first working commercial RISC. The arguments would be over whether or not it was a "true" RISC and whether or not one could count it as a commerial product in 1981, since it didn't actually ship until 1986. *This* delay, in my opinion, was caused by overly ambitious software plans, in the form of porting an IBM version of UNIX to a virtual software layer called VRM (Virtual Resource Manager), rather than porting Berkeley UNIX directly to the hardware. The path from having hardware to developing VRM to porting UNIX and then getting VARs to write applications was just too long--a problem that IBMs resources couldn't overcome. I was the first member of the ROMP design team--something I credit to random chance rather than any personal expertise (my graduate work at the time had been in digital control systems). ROMP was a good way to learn microprocessor design by learning what *not* to do. I understand that ROMP was also used in an IBM laser printer, but I don't have any first-hand knowledge that this is true. ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== ------------------------- H.2 - What types of processors were made? There are 2 basic types of machines called an RT. The tower model, IBM machine number 6150. The desktop model, IBM machine number 6151. There exists a special version machine that used the same processor, available only to educational sites that is a hybrid PS/2 model 60 with a special mirco-channel board version of the 032 processor. That machine was IBM machine number 6152. The 6152 ran only the AOS operating system downloaded from another IBM 6150 or 6151 also running AOS, via a lan TCP/IP interface (either Token-ring or Ethernet). I am not sure the 6152 machine can rightly be called an RT, as the only interface boards used were the same as used in PS/2 machines. This version may be somewhat rare, and I have never seen one. The rest of this list will not cover the 6152 machine. More information on the 6152 processor is covered in the AOS FAQ posting in this newsgroup. [ More details about the mysterious 6152 model RT would be intresting. How widespread is it? History? Are any still running? - MW ] There are three versions of the 6150/6151 processor card, and several unique RT models using each version of the card. IBM used the different model numbers to designate different base configurations of processor speed, installed main memory and installed hard disks. Model nubmers can be deciving, as some machines may have been field upgraded to different models and/or processor types. The standard 032 processor card was in models: 10, 15, 20, 25 and A25. - 1MB memory was standard, with expansion available, via 1MB, 2MB or 4MB memory boards. - Optional Floating Point Accelerator was also available. - AIX 1.0 and 1.1 (RT version) initially shipped with these models. - 170ns processor cycle time. - The models 10, 20 and A25 were discontinued October, 1988. - The models 15, and 25 were discontinued May, 1990. The Advanced processor card was in 2 different types: The 115 which had 4MB memory ON the processor card, available only on the desktop 6151. The 125 and B25 models which had all their memory on external FAST ECC 4MB memory cards, used in the 6150 tower models. - Memory expansion via 4MB FAST ECC memory boards. - Built in 20Mhz Motorola 68881 floating-point processor. - Optional Advanced Floating Point Accelerator was also available. - These models required AIX 2.1 as a mininum. - 100ns processor cycle time. - Later 8MB FAST ECC memory boards became available. - The models 115, 125 and B25 were discontinued May, 1991. The Enhanced Advanced processor card: Available only with the model 135 and B35 (6150 tower), and with the model 130 (6151 desktop). - On-board 16 MB main memory standard. - Motorola 68881 was removed and the Enhanced Advanced Floating Point Accelerator was made a standard feature. - These models required AIX 2.2 as a mininum. - 80ns processor cycle time. (Much faster!) - Rated by IBM at 5.6 Mips. - The models 130, 135 and B35 were discontinued May, 1991. Enhanced Advanced processors are easily recognized. Soldered directly to the processor board are 16 'SIMM like' memory boards sticking up on about 1/2 of the processor card. All processor cards are installed in the special board slot labeled 'A'. The A## and B## model machines shipped without the native keyboard, and instead used a preinstalled 5080 attachment interface card allowing the RT processor to share the keyboard that was attached to the 5080 grahphics system hardware. Via a special interface card, the 5080 lighted program function keypad (LPFK) and dials unit (three variable position X,Y and Z controls) could be attached either to the RT or the 5080 graphics system. Primarly used in a CADAM and CATIA setup running AIX. ------------------------- H.3 - How fast are the different models of RT? [ I would like to see some results from users with later benchmark tests on both the native C and Fortran compilers. Tests with a 135 processor using the last available compiler patches from IBM, and side-by-side tests with the now available GCC compiler for AIX RT would be an intresting addition to this section. I would like to see how those compilers stack up to each other in performance tests. I would also like to see how the RT still stands using some of the newer industry standard benchmark programs. Comparisons against other popular processors now in use would be intresting. This information may be dated, considering that IBM continued to improve the performance of the native C compiler available with the AIX V2 operating system. Comparison running AOS or MACH would also be intresting to see how much difference compiler and OS technology has on overall performance. Challenge anyone? - MW ] Note: These performance numbers are dependent on various factors, including complier update levels, language, Fortran or C, compiler options, and instlled floating point accellerators. Times given are using the AIX operating system. These numbers were obtained from an IBM announcement letter number 188-120 Dated July 19, 1988, announcing the release of the 135 Enhanced Processor. Refer to that IBM announcement for more complete information. Test Jan 86 Feb 87 July 88 =====================+=================================================== Dhrystones | 1780 6500 8300 (1) | 10400 (2) =====================+=================================================== FP KWhetstones | (double precision) | Standard | 20K 810K 2020K Optional | 200K 1600K N/A =====================+=================================================== LINPACK KFlops | (double precision) | Standard | -- 80K 410K Optional | 37K 300K 780K (3) =====================+=================================================== Disk Maximum | - Capacity | 210Mb 5810Mb 7460Mb - Data Rate | (Mbytes/sec) | 0.26 1.08 1.08 (4) =====================+=================================================== Notes: (1) Benchmark run on an RT System model 125. (2) Benchmark run on an RT System model 135. (3) Using specially coded basic linear algebra subprograms. (4) 310 Meg Fixed disk has a 928 Kbps data rate. The date in the columns above refer to IBM announcement letters for the RT, released on the the date indicated. Jan 86 generally refers to the Standard 032 processor available with models 10, 15, 20, 25 and A25. Feb 87 generally refers to the 115 and 125 models and AIX V2.1 enhancements. July 88 refers to the announcment of the 130, 135 and B35 models, and AIX V2.2 enhancements. The IBM announcment letter partially quoted above indicates that the benchmarks were achived by running the Dhrystone benchmark V1.1 on AIX/RT Operating system V2.2 after installing the June 1988 updates to the C compiler. ------------------------- H.4 - Can you upgrade from one processor type to another? The general answer is yes. However, this is dependent on two things: 1) If you can find the necessary parts. 2) If the planar is of a particular hardware level. The memory cards in the models earlier than the 115/125 are too slow for the later Advanced Processor (125). That processor will only allow use of the 'Fast ECC' memory cards available in either 4MB or 8MB sizes, for a total of 16 Meg. If you have a two different sizes of memory cards, the larger must be in slot 'C'. The 135 model has all 16 Meg available SOLDERED to the processor card and require no external slot C or D installed memory. The Floating Point Accellerators only work when matched with the correct type of processor. Standard processor = Standard FPA or either a level1 or level2 AFPA. Advanced processor [APC] (115,125 or B25) = Advanced FPA (level1 or 2). Enhanced Advanced processor (130,135,B35) = Enhanced Advanced FPA (level 2 board only). The standard FPA board is easily recognized as it is a single board, and the slot fingers are uniquely placed so as to fit only in slot B on the 6150 and 6151. The later model FPA is a double layer board, constructed so as to still fit in one slot. Descriptions of level1 and 2 FPA boards are described in the adapters section (H.7) below. To perform an upgrade from the slower version of the 032 processor to the APC (115/125) needs different Fast ECC memory cards, and a faster FPU. To upgrade from a APC to an EAPC (130/135), you must remove any installed memory boards because the EAPC has onboard memory. The Enhanced processor also requires the Enhanced FPU. The faster processors also require later versions of AIX upgrades that were minimum for each model, and the appropiate minimum memory for the type of processor. [ I am still searching for more complete upgrade information. IBM had some specific minimum planar serial numbers that were required for the faster processors, but I do not have any of that information. Anybody? - MW ] ------------------------- H.5 - How can I tell what kind of processor type is installed? For a quick determination of the processor type, observe the LED's during a power on IPL. The general sequence for initial 'Power On Self Tests' (POST) codes is: 88, xx, zz, yy, 09, 10, 14 (long), 15, 16, 21, 22 The XX, YY and ZZ LED values will have a value of: XX YY ZZ 01 03 05 = Standard 032 processor. (010,020,025,A25) 1c 3c 5c = Advanced 032 processor. (115,125 and B25) 1u 3u 5u = Enhanced Advanced 032 processor. (130,135,B35) The XX and YY codes stay around the longest, and are easiest to see. A few other codes fly by as well, but try as I could, I could not tell what they were. Other codes can show up, depending on what other I/O boards are found in the system during power up. If any code remains in the LED's for over 5 minutes, a failure had been found with the system during self tests. All LED codes after the code 22 (boot record processing), are dependent on the operating system being loaded into the RT. LED codes prior to the 22 are placed in the LED display by the Power On Self Tests (POST) of the RT planar. Almost all the other LED codes are displayed by Loadable POST (LPOST) routines invoked during VRM initialization and IPL. Obviously systems NOT running AIX with VRM will have different LED codes. ------------------------- H.6 - Where can I get parts for RT's? [ This section needs more entries, addresses and/or phone numbers. Third party suppliers or used equipment dealers known to deal in RT hardware would be great. - MW ] Parts at this time are still available from IBM. At this time, IBM does not have any announced discontinuance of parts. Most interface boards and monitors are still being sold, and are available NEW from IBM. IBM still offers maintence contracts for RT computers and equipment. IBM parts may be ordered by calling IBM-Direct, 1-800-426-2468. Other IBM numbers: 1-800-426-7378 Service/Maintenance 1-800-426-2468 Supplies/Dealer Referral 1-800-426-3333 Information However, IBM's prices may be a little steep. Some used and surplus parts houses from time to time get RT's, but not on any regular basis. Lots of times, they are broken up for some of the re-usable parts, and the rest junked. :-( Dickens Data Systems used to make special 8, 16 and 64 port async adapters for RT's. They also sold device drivers for various SCSI attached devices, including 9-track tape. I am not sure if they still make any of these. ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== Submitter: rrogers@chinet.chinet.com (Richard Rogers) [ I have made a few editorial changes and corrections to Richards submission, mostly phone number corrections or address/contact corrections. - MW ] In searching for a source of RT Megapel cards I put a call out over the net for RT parts sources and said that I would summarize back to the net. Two responses were received, so a personal thank you to Jon Brinkmann and Matt Rush. All leads were contacted with the following results: Dickens Data Systems 1-800-848-6177 Don't inventory RT parts, but do have some RT add in hardware and software. Dickens Technologies 404-418-0630 Carry all parts. Next Generation Systems 313-435-5086 Contact: Randy Hastings Alpine Computer Sales P.O. Box 1500 1052 Hwy 395 Gardnerville, NV 89410 (800) 274-5876 Carry all parts. International Data Products 4445 W. 77th St. Mpls, MN 55435 (714) 851-0222 Don't inventory RT parts any longer. RGdata Inc. 975 Jefferson Road Rochester, NY 14623 (716) 424-7500 Carry all parts. Contact: Dave Gerritsen Dempsey Business Systems 18377 Beach Blvd., Suite 323 Huntington Beach, CA 92648 (800) 637-2620 Carry all parts, "large quantity". Contact: Steve We purchased purchased 5 cards and cables from Dave Gerritsen at RGdata. Everything arrived OK. We've had good experiences with RGdata in the past, I just didn't realize that they carried RT parts. ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== ------------------------- H.7 - What adapter cards are supported in an RT? NOTE: See the OS dependent FAQ list for additional hardware that may be supported by that operating system. The information and part numbers shown below generally reflect AIX usage. [ Feature code numbers and part numbers, where known, are shown in parenthesis like this (#feature,partnum). Part numbers DO change with EC (Error Correction) changes and production run changes. These numbers should be able to be cross-referenced if no longer correct. - MW ] Memory cards - - For Model 10,15,20,25,and A25. * 1Mb Memory Expansion (#8222,6848223) * 2Mb Memory Expansion (#4739,6299228) * 4Mb Memory Expansion (#3156,61X6157) - For Models 115,125 and B25 only (for use with RT PC Advanced Processor Board 08F3639 only) * 4Mb Fast Memory Expansion (#7004,61X7005) * 8Mb Fast Memory Expansion (#7008,61X7009) - Note: The model 130,135 and B35 are at their maximum 16MB of memory soldered on the processor card. Perhiperial adapters - * Small Computer System Interface Adapter (#7000,61X7001) - Fuse 1.0A 250V (0855253) Fixed Disk adapters - * PC AT Fixed Disk and Diskette Drive Adapter (#3428,79X3431) * ESDI Magnetic Media Adapter (#6341,00F2160) * RT PC Extended ESDI Magnetic Media Adapter (#????,08F3766) * RT PC Portable ESDI Magnetic Media Adapter (#3506,08F3506) (usable only in models 115/130/125/135/B25/B35) Tape Drive adapter - * RT PC Streaming Tape Drive Adapter (#4797,6299222) Display Adapters - * IBM Monochrome Display and Printer Adapter (#4900,8529148) * IBM PC Enhanced Graphics Adapter [EGA] (8654215) - IBM PC Graphics Memory Expansion Card (6323468) * RT PC Advanced Monochrome Graphics Display Adapter (00F2357) * RT PC Extended Monochrome Graphics Display Adapter (6299351) * RT PC Advanced Color Graphics Display Adapter (00F2350) * Megapel Display Adapter (#7658) - has two boards fastened together - Display Controller (6247666 or 6247529) - Display Processor (6247662) Communication adapters - * RT PC 4-Port Asynchronous RS-232C Adapter (UN-Buffered) (#4763,???????) * RT PC 4-Port Asynchronous RS-422A Adapter (UN-Buffered) (#4764,???????) * RT PC 4-Port Asynchronous RS-232C Adapter (Buffered) (#1356,61X6339) * RT PC 4-Port Asynchronous RS-422A Adapter (Buffered) (#1357,79X3782) * IBM PC AT Serial/Parallel Adapter (#0215,8286147) * IBM PC 3278/79 Emulation Adapter (long) (#????,???????) (Early version is long, and only one may be installed, and has no switches to alter memory addresses.) * IBM PC Advanced 3278/79 Emulation Adapter (#5050,8665792) (later version is short, has switches, and a maximum of 4 may be installed.) * IBM PC Network Adapter - discontinued 07/88. (#0213,8286171) * IBM Token-Ring Network RT PC Adapter (#3797,67X0432) Early version * IBM Token-Ring Network RT PC Adapter (#3797,69X8142) Late version * RT PC Multiprotocol Adapter (#4762,08F3193) * RT PC Baseband Adapter [Ungerman-Bass Ethernet] (#6810,61X6809) * 8-Port Asynchronous Mil-Std 188 Adapter (#3169,08F3170) * 8-Port Asynchronous RS-232-C Adapter (#3165,08F3166) * 8-Port Asynchronous RS-422-A Adapter (#3171,08F3172) Special - * RT PC Floating-Point Accelerator (#4758,6299220) (for use with RT PC Processor board 79X3766 only) * Advanced Floating-Point Accelerator [115,125,B25 only] Note: There are two versions of this card: - level 1 (#6814,61X6814) (bar code A117Kxxxxxx) can be used with either the original processor board (P/N 79X3766), or the Advanced Processor board (P/N 08F3639). - level 2 (#6815,08F3589) (bar code A1206xxxxxx) use with RT PC Processor Board 79X3766, or RT PC Advanced Processor Board 08F3639, or RT PC Enhanced Advanced Processor Board 08F3587. * Enhanced Advanced Floating-Point Accelerator [130,135,B35 only] (#6815,???????) [is this the level 2 board? - MW] * Personal Computer AT Coprocessor Card (#4756,6299226) - AT Math processor chip [80287], (#0211,8286127) * 5080 Peripheral Adapter (#7561,6487562) - used to attach the 5085 dials feature and the 5085 Lighted Program Function Keyboard feature. Identifyable by the three 10-pin MODU connectors * 5080 Attachment Adapter (#7860,6247851) - used to attach the RT processor to the 5085 Graphics processor. * 5086 Model 1 Attachment Adapter (#7876,???????) * S/370 Host Interface Adapter (#7893,6247891) - used to connect the RT processor to the IBM 5088 graphics controller. * Expansion unit adapter (#3540,08F3727) - used to attach the RT PC 6192 expansion unit. ------------------------- H.8 - What IBM perhiperials were available? There may be other devices supported by other operating systems. Refer to the one of the OS specific FAQ lists for more information. The following IBM peripheral devices were officially supported by IBM for use on the 6150 and 6151: [ Feature code numbers and part numbers, where known, are shown in parenthies like this (#feature,partnum) - MW ] Storage Devices - Floppies: * IBM PC AT High-Capacity Diskette Drive (68X3752) * IBM PC AT Dual-Sided Diskette Drive (68X3753) Fixed Disk drives - * 40Mb Fixed Disk Drive [ R40 ] (#4735,6299235) * 70Mb Fixed Disk Drive [ R70 ] (#6941,61X6942) * 70Mb Extended ESDI Fixed Disk Drive [ E70 ] (#3988,79X3989) * 114Mb Extended ESDI Fixed Disk Drive [ E114 ] (#3272,00F2272 or 00F2273) * 310Mb Extended ESDI Fixed Disk Drive [ E310 ] (#3310,08F3358) * 310Mb Extended ESDI Fixed Disk Drive [ H310 ] (#3310,08F3358) [ this drive is really a Maxtor XT-4380E, wiht a minor modification for what Maxtor calls a 'short index pulse' ] * 9332 DASD Models 240, 250, 440, and 450 * 9309 Rack Enclosure Models 1 and 2 Tape Devices - * 6157-001 Streaming Tape Drive (QIC 24) * 6157-002 Streaming Tape Drive (QIC 150) Displays - * 5151 Personal Computer Display [PC XT monochrome display] (8529171 - low voltage) (8529209 - high voltage [220V? - MW] ) * 5154 Personal Computer Enhanced Color Display [ EGA ] (6321035 - model 1 low voltage) (6321049 - model 2 high voltage Northern Hemisphere) (6321036 - model 3 high voltage Southern Hemisphere) * IBM PC Display Stand (#????) (for EGA display) * 5081 Display Models 11, 12, 16, and 19 * IBM 6153 Advanced Monochrome Graphics Display * IBM 6154 Advanced Color Graphics Display * IBM 6155 Extended Monochrome Graphics Display Pointing devices - * 5083 Tablet Models 11 and 12 (NO LONGER AVAILABLE) * IBM 5083 Model 11A tablet. (6248516) * IBM 5083 Model 12A tablet. (6248515) * Mouse (#8426,00F2384) Also called a 6100 pointing device. Special devices - * Lighted Program Function Keyboard (#4710) * Dials (#8710) * IBM 5085 Graphic display system. Printers - * 3852 Model 2 Color JetPrinter * 4202 Proprinter XL * 5842 Modem * 6184 Color Plotter * Pageprinter (3812). (Requires special RT font diskette, #3065 on 3812.) * 5201 QUIETWRITER Printer, Models 1 and 2 (Model 2 supported in character mode and 5152 compatible graphics mode only). * 4201 Proprinter * 5152 Graphics Printer (NO LONGER AVAILABLE) * 5182 Color Printer (NO LONGER AVAILABLE) * 6180 Color Plotter Model 1 * 7371 Color Plotter * 7372 Color Plotter * 7374 Color Plotter * 7375 Color Plotter Model 1 and 2 * IBM PC Printer Stand (#5614) ASCII Terminal devices - * 3151 and 3161 ASCII Display Station * 3162 and 3163 (in 3161 mode). * ASCII terminals that adhere to ANSI 3.64 protocol as implemented by DEC VT100 and DEC VT220 (tm) or equivalent. VT-100 and VT-220 are Registered Trademarks of Digital Equipment Corporation. ------------------------- H.9 - What cables are available? Feature codes, where known are listed like this (#xxxx). Part Num Description ======== ==================================================== 61X6937 Cable, fixed-disk and diskette drive positions A-D 79X3777 Cable, fixed-disk and diskette drive positions A-E 6298359 Cable, power distribution. 6450217 PC AT Communications Cable (#0217) (3 Meters 9-pin to 25 pin) 6450242 IBM PC AT Serial Adapter Connector Cable (#0242) (10-inch DB 9-pin to 25 pin) 79X3914 RS232 Terminal attach cable. (#????) (3 meters 10-pin MODU to DB25 pin MALE use with 8-port, 4-port or native serial ports) 6298526 RS232 Terminal attach cable. (#3913) (3 meters 10-pin MODU to DB25 pin FEMALE use with 8-port, 4-port or native serial ports) 6298525 RS232 Serial Printer attach cable. (3 meters 10-pin MODU to DB25 pin FEMALE use with 8-port, 4-port or native serial ports) 6294704 RS232 Modem attach cable. (3 meters 10-pin MODU to DB25 pin MALE use with 8-port, 4-port or native serial ports) 1525612 IBM PC Printer Cable (#5612) 79X3468 SCSI interface card to device cable (#3468) (8 Meters) 79X3470 SCSI device to device cable (#3470) (1 Meter) 6294812 Modem Cable RS232C for Multi-Protocol adapter ( 3 meters 16 Pin MODU to DB25 male ) 6294814 Autocall Cable RS366 for Multi-Protocol adapter ( 3 meters 16 Pin MODU to DB25 male ) 6294816 Modem Cable X.21 for Multi-Protocol adapter ( 3 meters 16 Pin MODU to 15 pin male ) 08F3157 8-Port RS232C Fan-out cable assembly (#3157) ( 6 foot cable to fanout box with 8 10-pin MODU connectors) (also used with MIL-188 adapter) 08F3158 8-Port RS422A Fan-out cable assembly (#3158) ( 6 foot cable to fanout box with 8 6-pin MODU connectors] 6487586 RT PC 5083 Tablet cable kit. (#7586) - used only to attach a model 1 or 2 tablet to an RT. not needed for 11A or 12A tablets. 6487563 RT PC 5080 Peripheral Adapter cable kit 6247861 RT PC 5080 Attachment cable kit. (#7861) Includes two cables, terminator, diskettes and documentation. 22F9207 RT PC Expansion unit cable, 2m. ------------------------- H.10 - What is the pinout of the 6150 serial ports? How do I make my own RS232 cables compatible for use with AIX? The funny connector on the back of the 6150 labeled 'S1' and 'S2' are the native serial ports built into the system planar board of the 6150 tower models of the RT. This connector is refered to in the IBM hardware manuals as a MODU connector. The 10-pin connector used on the native serial ports, is also used by the fan-out box for the RT RS232 8-port card. These part numbers for the connector were given to me by the IBM support center in Austin, TX for the RiscSystem/6000. The 6000 has the same 10 pin MODU connectors for the 6000's native serial ports, and is the same connnector used by the RT's native serial ports. AMP Product Corp. Housing AMP P/N 102394-3 Cover AMP P/N 102541-3 Back Cover AMP P/N 102536-3 Ferrule AMP P/N 102903-3 Receptacle AMP P/N 2-87195-0 Receptacle AMP P/N 86491-4 Shield Kit AMP P/N 103125-2 You can also get a 10-pin MODU connector pre-wired to a DB 25 pin male connector, used for the Risc/System 6000 and is a short stub about 4 inches long. It is IBM P/N 00G0943. This stubby cable will work just fine for connecting modems, and with a properly wired extension able, for printers and terminals as well. ====================================================================== Looking INTO the connector pins in the back of the RT tower, here is the pin-out assignments and functions. The connector on the back of the RT tower model is a male MODU connector. This pinout is the same for the IBM 4-port card, and the fan out box of the IBM 8-port card. @ pin abb function +-----------------+ T 1 TX = Transmited data from RT | | T 2 DTR = Data Terminal Ready | 1 2 3 4 5 | T 3 RTS = Ready to send | | R 4 RI = Ring Indicate | 6 7 8 9 10 | - 5 - No connection | | R 6 RX = Received data to RT +---------------+ R 7 DSR = Data Set Ready R 8 CTS = Clear to send R 9 CD = Carrier Detect - 10 GND = Signal Ground @ means T = RT transmits R = RT receives (listens) ====================================================================== RS232 Modem attach cable. Feature #4704, Part# 6298240 Option #6294704 IBM supplied cable is 3 meters long, with a 25 pin male connector. This has worked for my modem attach.. I have not actually used a meter on a STOCK IBM RT modem cable, but this works for me. NOTE: Metering the IBM RS6000 stubby cable P/N 00G0943 matches this pinout. Pin# 1 2 3 4 5 6 7 8 9 10 10-PIN MODU female | | | | | | | | | | | | | | | | | | +--+ | | | | | | | | | | 2 20 4 22 3 6 5 8 7 1 DB25 male connector NOTE: pin 5 of the MODU connector is unused. ====================================================================== The following cable wirings were discovered by using a meter probe on IBM RT RS232 cables and by opening the hoods on the DB25 connector ends. IBM part numbers and option numbers listed where known. They are still orderable from IBM the last time I checked. ====================================================================== RS232 Terminal attach cable. Feature #3913 Part# 6298526 Option# 6298186 Pin# 10 6 1 9 2 8 3 7 10-PIN MODU female | | | | | | | | | | | | | +---+ | +--+ | | +--+ | | | | | | | | | | | | Pin# 1 7 2 3 4 5 6 8 20 DB25 Female connector ====================================================================== RS232 Serial Printer attach cable. Feature #4803 Part# 6298525 Option# 6294803 Pin# 10 6 1 7 9 3 2 8 10-PIN MODU female | | | | | | | | | | | | +--+ | | +--+ | | | | +--+ | | | | | | | | | | Pin# 1 7 2 3 4 5 6 8 20 DB25 female connector ------------------------- H.11 - What is the pinout of the 6150/6151 Mouse/Tablet port? Here is pin-out and information on the RT locator port. More information is available from "IBM RT PC Hardware Technical Reference" Volume 1 P/N 75X2032, Chapter 9 pages 9-24 thru 9-29, and from Chapter 5, pages 5-131 thru 5-135 and page 5-145. [ The connector is a AMP type, I don't have the P/N's of how to get the parts to construct one - MW ] Connector Specifications: (view is looking into the connector (male receptacle) socket on the back of the RT system unit. +--------------+ 1 = ground. | 1 3 5 | 2 = Transmit to device. | | 3 = +12 Volts - 2 4 6 - 4 = -12 Volts | | 5 = +5 Volts +----------+ 6 = Receive from device. The RT standard locator device is a two button mouse. The middle button on a three button mouse can be simulated by pressing both buttons simultaniously, mostly used for X-windows. Resolution: 25, 50, 100 or 200 counts per inch. Default=100. Sampling rate: Programmable 10,20,40,60,80 or 100. Default=100. Data modes: Stream (default), remote. Scaling: Linear (default), exponential. Protocol: RS232C, 9600 baud, async, full duplex, 1 stop bit, odd parity. - Self test at power-on or when requested by system. - The locator device is semi-intelligent and has 14 different commands that it understands. - 11 bit framing protocol. IBM part numbers for the RT mouse are: 00F2384 Mouse. Also called a 6100 pointing device. A IBM 5083 tablet may also be used as a locator device. IBM part numbers for the 5083 tablet are: 6248516 IBM 5083 Model 11A tablet. 6248515 IBM 5083 Model 12A tablet. 6248522 Stylus for 11A or 12A tablet. 6248523 4-Button Cursor for 11A or 12A tablet. 6248524 Cable RT PC to 5083 for 11A or 12A tablet. [ Has anybody gotten a NON-IBM RT mouse running on an RT? - MW ] ------------------------- H.12 - What is the pinout of the 6150/6151 Keyboard port? Here is pin-out and information on an RT keyboard. More information is available from "IBM RT PC Hardware Technical Reference" Volume 1 P/N 75X2032, Chapter 9 pages 9-3 thru 9-23, and from Chapter 5, pages 5-85 thru 5-114. [ The connector is a AMP type, I don't yet have the P/N's of how to get the parts to construct one. Anybody? - MW ] Connector Specifications: (view is looking INTO the female connector socket on the cable attached to the keyboard) +--------------+ 1 = +5 Volts | 5 3 1 | 2 = Keyboard Data | | 3 = Speaker Signal - 6 4 2 - 4 = Speaker Return (+5V) | | 5 = Ground +----------+ 6 = Clock (diagrams in the book seem to indicate that clock is generated BY the keyboard) Microcomputer in keyboard performs following functions: - Self test at power-on or when requested by system. - keyboard scanning. - Buffering of up to four key scan codes. - Executing the hand-shake protocol requred by each scan code transfer. - full-duplex serial interface - communicates with a 8255A PIO chip and a 8501 microprocessor in the RT planar. - 11 bit framing protocol. IBM part numbers for the RT keyboard are: 1392366 Keyboard, United States English. 1392374 Keyboard, United Kingdom English. 1392373 Keyboard, Canadian-French. Ten other part numbers are listed for other language layout keyboards. ------------------------- H.13 - Can I use an AT keyboard on an RT? NO. While most of the signals are the same, there are four major differences: 1) There is a speaker in the keyboard. 2) The physical connector is not the same. 3) Some of the scan codes are different. 4) Some of the programing commands are not implemented in the AT keyboard. Difference 1 and 2 are managable, but 3 and 4 imply some way is needed to alter the keyboard ROM chips, or basic hardware. [ ANY input on how to hack a keyboard for RT compatibility is gladly welcomed! - MW ] ------------------------- H.14 How do I get a parallel printer attached to an RT? [ This information has been taken from the AIX manuals, if there is a difference for AOS, let me know. - MW ] There are three different ways to attach a centronics parallel printer to the RT. A maximum of two parallel printer interfaces are supported, but only by using a AT serial/Parallel card, jumpered at the secondary printer port address. 1) AT Serial/Parallel interface card. Parallel port primary address = 3BC Parallel port secondary address = 278 2) PC/XT Monochrome/Parallel printer card. Parallel port only address = 3BC No jumper available to disable this port. 3) Megapel card has a parallel interface on it. Parallel port only address = 3BC Swich 1 position 2 enables/disables the port. Shipped disabled from factory. ------------------------- H.15 What are the switches on the Megapel adpater for? Technicial information on Megapel adapter and display. Switch 1 is located on the display processor card (the one with the 25-pin parallel printer connector on it). 1 Not used. Must be set to OFF. 2 On = Enable printer port. Off = Disable printer port. 3 Enable CGA emulation mode. Off = Normal Megapel mode. 4 Not used. Must be set to ON. [ Anybody know what the 'not used' switches do? - MW ] Megapel and display technicial information: Slot position Must be installed in slots 4 and 5 ONLY. I/O Addresses 0930-094F Memory ddresses: 0B8000-0BBFFF CGA emulation mode. C00000-C3FFFF Adapter data space. D60000-D7FFFF Adapter program space. DMA channel 7 Interrupt level 11 (shared) Horizontal Frequency 63.36 Khz Vertical Frequency 60 Hz, Non-Interlaced. Display connector 3-pin Video (D-shell) ------------------------- H.16 - AT Co-Processor information. [ Watch this space for more details! - MW ] o IBM PC AT Math Coprocessor (#0211) o IBM PC AT 512Kb Memory Expansion Option (#0203) ------------------------- H.17 - How can I get the maximum data on a 6157 tape drive? [ While the 6157 hardware is the same, and the type of tape used is the same, the default values for the tar command for AOS may be different than AIX. - MW] ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== Submitter: crow@austin.ibm.com (David L. Crow) IBM Advanced Workstations Division Date: 30 Apr 92 14:12:59 GMT >We have the 6157-002 model (150Meg, I think) and for some >reason, it needs three tapes to backup only 240Meg of data. DC 600A tapes should hold 118 MB of data. Of course this is somewhat dependent on the RT's ability to keep the data moving to the tape as it is streaming. If there is a break in data bacause the backup command can't get it there quick enough, then you'll lose some of your capacity. Here is an item from ASKQ two or three years ago that describes what flags to use to make sure that you get the maximum capacity out of your 6157. This probably could go into the FAQ (except the FAQ is pretty much just for AIX Version 3). ============================================ Subject: 6157 TAPE INFORMATION FOR AIX BACKUP COMMAND The correct descriptions for the -s and -d flags of the AIX backup command are: -slength Specifies the length of the usable space on a tape medium. This is a combination of the physical length and the number of tracks on the tape. The default "length" is 2700. To get the value for "length", you should multiply the physical length of the tape by the number of tracks (see table below). -ddensity Specifies the amount of data a system can write to a tape medium in bytes per inch. The default "density" is 700 bytes per inch. The density written to the tape is hardware controlled and can not be changed. The 6157-001 writes at 10,000 ftpi (flux transactions per inch) which is approximately equivalent to a density rating of 8,000 bits per inch. The 6157-002 writes at 12,500 ftpi which is equivalent to a density rating of 10,000 bits per inch. The -d (density) parameter is used with 0.5 inch tape drives to specify the density, such as 800, 1600, or 6250 bpi, but doesn't affect the density, that is, bits per inch, of the 6157. The -d parameter is used for the 6157 in the calculation of what quantity of data will be put on the tape. To increase the amount of data on the tape, the value for -d should be 1000 for 6157-001 or 1200 for 6157-002. Reference: AIX/RT Commands Reference Volume 1, SC23-2011-1, page 91. AIX PS/2 Commands Reference, SC23-2025, page 35. CALCULATION OF TAPE CAPACITY: The following formula yields the approximate capacity of a tape: # tracks * length * 11 inches * density = capacity (in bytes). 9 * 300 * 11 * 1000 = 29,700,000 bytes or about 29 MB 18 * 600 * 11 * 1200 = 142,560,000 bytes or about 142 MB The "11 inches" is the length of the recording foot, the actual amount of data stored on the tape per foot, and the interblock gaps take up approximately 1 inch per foot. TABLE: For the following AIX command(s), the values for -s and -d are in the table below: find ./ -print : backup -iv -C2000 -f/dev/rmt0 -sXXXX -dYYYY Recommendations for 6157-001: TAPE CARTRIDGE LENGTH TRACKS -s -d CAPACITY 3M DC 300A 300 feet 9 2700 1000 29 MB 3M DC 300XLP 450 feet 9 4050 1000 44 MB 3M DC 600A 600 feet 9 5400 1000 59 MB Recommendations for 6157-002: TAPE CARTRIDGE LENGTH TRACKS -s -d CAPACITY 3M DC 600A 600 feet 15 9000 1200 118 MB 3M DC 600XTD 600 feet 18 10800 1200 142 MB ==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**== ------------------------- H.18 - What Non-IBM hard disks can be used in an RT? [ This section may need to be refined, as AOS hackers may have introduced other disk interface cards to its support. Anybody with other NON-IBM drives running in your RT, using AIX or AOS let me know how you achived this, and what steps are necessary to make this work. - MW] The RT uses two different type of drives in the internal drive bays, ST-506 MFM and ESDI. There were FOUR different disk controller cards used by IBM in 6150 and 6151 systems. - The IBM PC AT FLoppy/Hard disk adapter, * Will run two floppies, 1.2 Meg or 360 Kb. * Two ST-506 MFM 40 Meg hard drives. * Used with the R40 series drives. * Used in the original IBM PC/AT. * Normally only found on the earlier RT machines. It will work on all model RT's. NOTE: A second controller can be added into slot two if jumpered as a secondary controller. However, AIX for the RT will only be able to access one of the two possible connections on a controller jumpered for secondary operations, for a total of three drives. - The ESDI disk controller. * Will run two floppies, 1.2 Meg or 360 Kb. * Two ESDI 70 Meg or 114 Meg hard drives. * Normally only found on the 115 and 125 RT machines. NOTE: A second controller can be added into slot two if jumpered as a secondary controller. However, AIX for the RT will only be able to access one of the two possible connections on a controller jumpered for secondary operations, for a total of three drives. * NOTE2: Both of the above controllers can be run in any combination for a maximum of two controllers and three drives. - The Extended ESDI (or EESDI) disk controller. * Will run two floppies, 1.2 Meg or 360 Kb. * THREE ESDI 70 Meg, 114 Meg, or 310 Meg hard drives. * Normally used on later model 125 RT machines and exclusively on the 135 model machines. - The Ported Extended ESDI (or EESDI) disk controller. * Will run two floppies, 1.2 Meg or 360 Kb, but only when jumpered as a primary controller. * THREE ESDI 70 Meg, 114 Meg, or 310 Meg hard drives. * Intended use was for running an additional three ESDI drives in a 6156 Portable Disk enclosure, with up to three removable hard drives. * Can function as the primary controller, but factory default jumpers place this as a secondary controller. With this controller, an RT could have SIX ESDI drives. * Supposedly has a faster transfer rate chip, but it not documented as such. NOTE3: On all of the above controllers when jumpered for secondary operations, the floppy drive function of that controller is inaccessble by AIX, not sure about AOS. The ESDI and EESDI adapters in the RT were made for IBM by Western Digital. The EESDI adapters are sensitive to timing problems with some OEM drives. * The IBM E310 drive was a relabeled MAXTOR XT-4380 drive. I personally have had success only when a specific TLA number controller board is installed on the drive, with what MAXTOR calls 'a short index pulse'. * Drives known to work with the EESDI controller have the following ientification numbers: MAXTOR XT-4380 Series: 2 TLA: 1094508-2 HDA: 1014294 PCBA: 1018528_A MINISCRIBE: Model 9380E 9380EF HDA: 01P4 PCBA: 04P1 BDMT: 05P1 Unique: 02P2 TDA: 3077A 3041A PIRAM: Model # ID337-RT-H2 Barcode says: model #638 AWE 00015432 PCB: 201384 EC: 11665 CCL A [ Watch this space for more JUMPER details. Also.. anybody with experiences with OTHER vendor drives running on an RT with AIX or AOS would be welcome. - MW ] * The E70 and E114 hard drives use a 150 Ohm inline resistor. It has pin one as the common pin, and has 12 total leads. This is NOT documented ANYWHERE that I could find! ------------------------- H.19 - What is the difference between an R70 and an E70 drive? Both drives are physically identical 'IBM type 0667' hard drives. The difference is in the formatting, and coupled with the Extended ESDI Magnetic Media Adapter. This adapter also employs the RT PC's burst DMA I/O capability and incorporates a more efficient alternate-sector scheme than the previous ESDI adapter. The R70 drive has a 4:1 interleave. The E70 drive has a 1:1 interleave. ------------------------- H.20 - What are the characeristics of the various IBM RT disk drives? Note: All drives have a 512 byte sector size. Drive part# type Cyl head Sects/track R40 6299235 MFM ??? ?? 17 (1) R70 61X6942 ESDI 566 7 36 E70 73X3989 ESDI 582 7 36 E114 00F2273 ESDI 914 7 36 E310 08F3358 ESDI 1225 15 34 Note 1: I am not sure why the tech manuals give such radically different number of available cylinders for the identical disk drive. I have seen an R70 and E70 side by side, and they are identical, and are 'IBM type 0667' drives! [ Are there some other 'R70' drives out there?? -MW ] ------------------------- H.21 - What SCSI devices can be attached? The amount and type of support for SCSI devices varies by the operating system used. Please refer to the different RT operating system specific FAQ list for more information about SCSI support. The IBM suported SCSI adapter is a 'Differential Driver/Receiver option' with the 'Alternative 2 connector'. The SCSI interface conforms to (then) proposed ANSI standard X3T9.2/82-2 Rev. 17B. Two wires are used for each signal lead in a push-pull signaling method also called 'differential-ended'. Most drives for other vendor workstations and PC's use a 'single-ended' SCSI implementation. What this boils down to is that the IBM SCSI card is electriclly incompatible with a lot of the off-the-shelf SCSI drives. IBM officially supported only one device attached to the SCSI interface card, the 9332 'Athens' disk drive. However, all is not lost. :-) Some vendors do offer their SCSI drives with an optional differential interface. There also exist a couple of manufacturers of 'Differential-to-single-ended' converter boxes. These boxes allow a bi-directional conversion of the SCSI bus and will allow attachment of these single ended disk drives. See the AIX FAQ for more information about using OEM SCSI disks on an RT using the IBM SCSI board. Under the AOS operating system, several people have modified the system to use an Adaptec SCSI controller. That controller uses single-ended devices. [ More information about this Adaptec controller can be found in the AOS specific FAQ list. - MW ] ------------------------- H.22 - What do the LED's mean during power on? When power is first applied initial self tests are performed by built it ROM routines and special processor on the system planar board. These self tests should complete with in 1-2 minutes. ROS LED Values during IPL 00 Initialization of Mono/Printer adapter failed 01 ROS CRC did not compare - Fatal 02 Soft IPL check failed - Fatal 03 Memory error or no memory - Fatal 04 Processor card logic error - Fatal 05 Processor or memory error condition - Fatal 07 IOCC test resident POST - Fatal 08 Bad processor card in IOCC test - Fatal 09 Keyboard adapter resident POST - Fatal 0c initialization failed - Mono/Printer adapter and APC 10 System timer resident POST - Fatal 11 Interrupt controller POST - Fatal 12 DMA arbiter resident POST - Fatal 13 Serial port resident POST 14 Fixed disk resident POST adapter 1 test 15 Fixed disk resident POST adapter 2 test 16 Diskette resident POST adapter 1 test 17 Diskette resident POST adapter 2 test 18 Extension ROS 19 Attemting Manufacturing IPL 1c Advanced Processor card - Fatal 1u Enhanced Advanced Processor and memory Mgmt card - Fatal 20 NVRAM CRC check 21 No boot record found (NVRAM selected devices) 22 No boot record found (ROS selected devices) 23 Disk or diskette adapter slot or address - Fatal 25 User error - invalid RamSpecReg - Fatal 26 Attempting soft IPL 27 Bootable code exceeds available storage - Fatal 28 Unexpected return from loaded code - Fatal 29 IPL process passed control to loaded code. 3c Advanced Processor card and first 128K of memory. 3u Enhanced Advanced Processor and memory Mgmt card. 4c APC logic (Advanced Processor Card). 4u Enhanced Advanced Processor and memory Mgmt card Logic. 5c APC logic and system memory. 5u Memory expansion option or Enhanced Advanecd Processor and memory managment card. 88 reserved - POR or processor check 89 Unexpected machine or program check - Fatal. 8c IOCC test for APC. 8u Enhanced Advacned processor and memory managment card. 96 Memory card 1 resident POST error condition. 97 Memory card 2 resident POST error condition. 98 Memory card 1 and 2 resident POST error condition. 99 KEY locked, locked response. ------------------------- H.23 - What does LED code xx mean (during runtime)? LED codes displayed while running vary greatly depending on the operating system used. Please refer to the different RT operating system specific FAQ list for more information about these LED codes used. ------------------------- H.24 - What is different about the RT I/O slots. What cards will run in slot 8. The IBM RT 6150 and 6151 system units use ISA (AT) style I/O slots, however slot 5 on the 6151 and slot 8 on the 6150 are unique to the RT. Most cards that do not use memory refresh, or DMA channel 7 will have no problem with that slot. Bus timings may be slightly different, from an AT, as I/O accesses are not driven by the processor directly, but are routed via a special bus processor called the IOCC. The 8th slot in the 6150 RT and the 5th slot for the 6150 only have three signals different from the normal PC/AT assignments. Pin Standard CO-proc slot usage My notes.. B19 REFRESH + SPK DRV (Wire or'd to speaker control) D14 DACK 7 - DACK 8 DMA channel is reassigned.. D15 DRQ 7 + DRQ 8 .. ditto The following cards cannot go in slot 8: - AT 512Kb Memory expansion card (no refresh signal available). - Baseband adapter (Ethernet, Ungerman-Bass) [Timing?? -MW] - SCSI adapter ONLY when it is using DMA channel 7... channel 7 is not connected to SLOT 8. These cards require special slot placements: - EGA adapter only in slot 3 or 6 (6150) or slot 1 (6151). - Megapel adapter is a two boards sandwiched together, and can only be installed in slots 4 & 5 in a 6150 tower. It can also be installed in slots 2 & 3 (prefered), slots 3 & 4, or slots 4 & 5 (least prefered) in the 6151. [ It has been noted via discussions in this newsgroup that the the later X servers will have problems, errors and timing problems if the megapel adapter is NOT placed in these slots! -MW ] - AT-Coprocessor in installable ONLY in slot 8 of the 6150 tower, or in slot 5 of the 6151 desktop. (That's why it is called the coprocessor slot! :-) - The PC XT mono/printer adapter, is ONLY supported in slot 3 in the 6150 tower, or ONLY in slot 1 in the 6151 desktop. [ I'm not sure why this slot 3 restriction is here, what's wrong with slot 6? Timing? - MW ] IBM Mono Adapters with Part numbers 1804065, 1804073 or 1501667 cannot be used according to the parts book that I have seen. The options book indicates that those part number mono adapters will not operate correctly with an RT. I have had reports that clone monochrome cards also may have problems running in an RT. I have not tried them myself. Any 8-bit card is better off in slots 3 or 6 (6150) or in slot 1 (6151), as those slots are 8-bit only anyway. Save a 16-bit slot for a card that needs it. ------------------------- H.25 - How do I run diagnostics. IBM supplied with most RT systems several books, one set of three books are maroon in color, and contain setup, install and one book labeled "IBM RT PC Problem Determination Guide" (RT PD). The Problem Determination guide is usually composed of two manuals in one binder. IBM manual number SA23-2604, and for those users who ordered AIX with their systems, it also contains SA23-2603 titled: "IBM RT AIX Operating System Problem Determination Guide". This binder also contains three diskettes with maroon labels. Volume one of the three diskettes is bootable, and when booted, causes it to examine the system hardware, and place a menu of diagnostic options on the screen. Most of the diagnostics are menu driven and are self-explanatory. The RT PD guide will take you thru any special procedures if necessary. Further problem diagnosis is available in the dark blue book with the title "IBM RT PC 6150 System Unit Hardware Maintenance and Service" Manual# SA23-2605 or Part Number 22F9803. This book contains problem isolation charts, part numbers, installation information and a SRN (Service Request Number) to FRU (Field Replaceable Unit) part index. This book also contains a LED fault code to SRN reference, as well as probable failure part analysis charts. ------------------------- H.26 - Serial port cards maximums and limitations. * The internal serial ports of the 6150 tower model RT are normally able to run at a maximum of 19.2K bits per second. [ AOS users report that this rate is able to be exceeded by modifications to the standard kernel. - MW] * The IBM RT 8-Port Adapter is capable of all 8 ports operating concurrently at 19.2 K bits per second. * All 8-Port Adapters installed in a single system unit should be set to the SAME interrupt level for best performance. * For proper software operation, 4-Port Asynchronous Adapters must be set to a DIFFERENT interrupt level than 8-Port Adapters, when installed in the same system unit. * IBM RT 8-port Adapters in the 6192 Expansion Unit should be set to DIFFERENT interrupt levels. Interrupt sharing is not supported between the IBM RT System Unit and the 6192 Expansion Unit. * A maximum of EIGHT 8-port Adapters can be installed on a system. (e.g. 6 adapters in the 6192 Expansion Unit and 2 in the RT system unit) * Concurrent use of 4-Port Adapters and/or PC AT Serial/Parallel Adapters and/or 6150 native Serial Ports with the 8-Port Adapters may result in reduced performance on the devices attached to the 8-Port adapters, depending upon line speeds and device usage. * If a 5080 Peripheral Adapter is installed in the system unit, the maximum number of 8-Port Adapters is reduced to four for the 6150, and to two for the 6151 System Units. ------------------------- H.27 - What are the switches on the 3278/79 adpater? The 3278/79 emulation adapter short version has one set of dip switches in the top left corner. SW Usage 1 Address range 1 1-ON 2-ON 2 Address range 2 1-OFF 2-ON Address range 3 1-ON 2-OFF Address range 4 1-OFF 2-OFF 3 OFF=Disable interrupts, ON=Enable interrupts 4 reserved 5 ON for address range 1, OFF for address range 2-4 6 OFF for slots 1-7 on PCXT and all RT slots. ON for PCXT slot 8. ------------------------- H.28 - Jumper location and information on AT Fixed disk adapter. The IBM RT PC Fixed disk adapter is a MFM controller, and is stock original IBM PC AT controller. The only drive that IBM used for the RT using that controller was the R40. (standard PC-AT 40 MB drive). The MFM controller documentation for the RT that I have indicates that it can support only TWO of EXACTLY the same type of drive. The RT books indicate that no matter how the drives are arranged, the MFM controller MUST have both drives the same. The RT docs where quite specific about that limitation. Most likely a limitation of the drvice driver, not the hardware. If running two controllers make sure that one controller is jumpered for PRIMARY controller and is in slot 1. The secondary controller is supposed to be in slot 2, and can run a maximum of one hard disk. The floppy interface is not usable on the second controller. Secondary addressing is set by placing the jumpers in the position AWAY from the metal plate on the card. This arrangement was intended to have 2 R40 drives on the primary MFM controller and 1 R40 attached to the secondary. ----------------------------------------------------- --- | :: :: :: :: || | o-o . :: :: :: :: || | o-o . D C :: :: || | S P B A || | || --------------------------+ +--+ +----+ |_____| |____________| | Position A is for floppy drive cable. B = for dasiy chained data cable for both hard drives. C = for first drive control cable. D = for second drive control cable. Jupmers in "S" direction for secondary, "P" for Primary. I/O addresses used (jumpered primary, slot 1): Floppy drives A and B - 03F0 - 03F7 Drives C and D - 01F0 - 01F7 I/O addresses used (jumpered secondary, slot 2): Drives E - 0170 - 0177 DMA channel 2 (diskette only) IRQ diskette - 6 Fixed disk - 14. ------------------------- H.29 - Jumper locations and information on ESDI adapter. The ESDI controller has the same connector arrangement as the MFM controller and only a SINGLE jumper in about the same position as the MFM controller. Looking at the card, the jumpers would be with the "S" direction being for Primary (backwards from the jumpering for the MFM controller) and the "P" direction for secondary. This interface board was discontinued with the announcement of the EESDI controller card. This controller has a part number of 00F2160. I/O addresses used (jumpered primary, slot 1): Floppy drives A and B - 03F0 - 03F7 Drives C and D - 01F0 - 01F7 I/O addresses used (jumpered secondary, slot 2): Drives E - 0170 - 0177 DMA channel 2 (diskette drives only) IRQ diskette = 6 Fixed disk = 14. ------------------------- H.30 - Jumper locations and information on EESDI adapter. The Extended ESDI controller had two versions: (see below) ----------------------------------------------------- --- | :: :: :: :: :: || | :: :: :: :: :: || | E D C :: :: || | B A X Y Z || early card | . o-o || --------------------------+ +--+ +----+ |_____| |____________| | ----------------------------------------------------- --- | :: :: :: :: :: || | :: :: :: :: :: || | E D C :: :: || | Z Y X B A || later card | o-o . || --------------------------+ +--+ +----+ |_____| |____________| | Position A - is for floppy drive cable both floppies. Position B - dasiy chained data cable for all three hard drives. Position C - for first drive control cable. Position D - for second drive control cable. Position E - for third drive control cable. Primary address, jumper Z to Y. Secondary Address, jumper Y to X. Later version Part Number, 08F3766. I/O addresses used: Floppy drives A and B - 03F0 - 03F7 Drives C, D and E - 01F0 - 01F7 and 05F0 - 05F7 DMA channels Diskette = 2 FIxed disk = 0 or 1 (set by program). IRQ diskette = 6 Fixed disk = 12 or 14 (set by program). ------------------------- H.31 - Jumper locations and information on the 'PORTED' EESDI adapter. The "Ported" or Portable Drive adapter was a special version of the standard Extended ESDI controller that had the same identical layout, jumper and pin configuration as the "later" version of the Extended ESDI controler. The one difference was an external connector on the end plate of the card that could hook up the IBM "Portable drive bay" enclosure. The portable controller had the same connectors in the middle, and I suspect that the "portable" controller was not any different from the stock controller. In a non-standard configuration, I have run run 6 ESDI drives by having a standard Extended ESDI controller in slot one and a PORTED controller in slot 2. The portable controller even had to be jumpered to the "secondary" position for installation. I also have tested the card in the primary position (undocumented on the jumper setting in the manual, but it looked JUST like the standard EE-ESDI card!) running the internal E310 drives, and it worked just fine. Part Number, 08F3612. I/O addresses used: [looks like secondary addresses to me! - MW] Drives F, G and H - 0170 - 0177 and 0570 - 0577 DMA channels FIxed disk = 1 or 3 (set by program). IRQ Fixed disk = 12 or 14 (set by program). ------------------------- H.32 - IBM 9332 Disk drive information. IBM 9332 DIRECT ACCESS STORAGE DEVICE No Longer Available, for ordering by IBM US as of May 17, 1993. The IBM 9332 "Athens" fixed disk drive has models with both IPI-3 and SCSI interfaces. The only version attached to the RT was via the differential SCSI interface. During boot time the AIX operating system has the ability to download microcode to the drive. The Models 240 and 440 drives are intended to be Rack-mounted in a 9309 Rack Enclosure. The Models 250 and 450 are mounted in a standalone enclosure providing cooling and power. Model................. 240,250 440,450 Capacity in Mb 200.3 400.6 Format Number of Cylinder 1349 1349 User 1346 1346 Reserved 3 3 Access in Milliseconds Average 19.5 19.5 Track-to-Track 3.2 3.2 Data Rate--Mb/sec Maximum burst 4.0 4.0 multisector 1.4-1.9 1.4-1.9 Rotation Speed RPM 3119 3119 Latency in Milliseconds 9.6 9.6 Number of Actuators 1 2 ------------------------- H.999 - Acknolowgements and copyright information. This file is provided AS IS with no warranties of any kind as to the usefullness/correctness of these procedures/questions. The author shall have no liability with respect to the infringement of copyrights, trade secrets or any patents by this file or any part thereof. In no event will the author be liable for any lost revenue or profits or other special, indirect and consequential damages. IBM, AIX, AT, XT, RT, RT PC and RT Personal Computer are trademarks of International Business Machines Inc. UNIX is a registered trademark of American Telephone & Telegraph in the United States of America and other countries. Any other trademarks not specifically mentioned are owned by their respective companies. Credits: The following people have either submitted articles for inclusion, made suggestions, or had parts of old articles included within re-arranged information. If you want your name dropped please let me know. Jon Brinkmann John Carr <jfc@athena.mit.edu> David L. Crow <crow@austin.ibm.com> Bjorn Engsig <bengsig@dk.oracle.com> Mike Johnson <mike@neutron.amd.com> John R. Moore <jrm@lgc.com> Francois Normant <fn@mathappl.polymtl.ca> Gerald Oskoboiny <gerald@vnet.IBM.COM> Richard Rogers <rrogers@chinet.chinet.com> Matt Rush <mrush@ecst.csuchico.edu> David Snearline <davids@engin.umich.edu> John Tracey <jtracey@cse.nd.edu> ====================== end of FAQ ibm-rt-faq/hardware ========================= AIX..... NOT just another UNIX. Mark Whetzel | My own RT system.. My own thoughts.. DOMAIN: markw@antimatr.hou.tx.us | IBM RT/135 running AIX 2.2.1 UUCP ..!menudo!lobster!antimatr!markw |