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- Newsgroups: comp.os.coherent
- Path: sparky!uunet!spool.mu.edu!caen!hellgate.utah.edu!csn!teal.csn.org!wizard
- From: wizard@teal.csn.org (Michael Willett)
- Subject: FAQ, Technical Tips for Coherent 4.0
- Message-ID: <C0C6zJ.EtE@csn.org>
- Sender: news@csn.org (news)
- Nntp-Posting-Host: teal.csn.org
- Organization: Colorado SuperNet, Inc.
- Date: Mon, 4 Jan 1993 15:57:18 GMT
- Lines: 268
-
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- T E C H N I C A L T I P S F O R C O H E R E N T 4.X
-
- Technical Tips FAQ for Rev 4.X of Coherent
-
- Rev 2.2
-
-
-
-
-
- Help With Installation:
- 4.0 Binary compatability with other software:
- Compiling programs:
- Help with serial ports and terminals:
-
-
-
-
-
-
- NOTE: I have had very few problems with Coherent 4.X, so I was at a
- loss to help in the FAQ. I asked Bob Hemedinger to help
- me in this area, and he was kind enough to put together the
- help areas including Installation, Binary (COFF) Compatibility,
- and a few tips on compiling programs. This is one of the many
- reasons I have stayed with Coherent. Thanks, Bob!
-
-
- Help With Installation: From: Bob Hemedinger <support@mwc.com>
- -----------------------
-
- 1) I'm updating from version 3.x to 4.x and am being asked for
- a serial number from a registration card. I don't have one.
-
- - updating users do not need new serial numbers. Use
- the number supplied with your 3.x version. If you don't
- know what it is, read the file /etc/serialno.
-
- 2) I'm seeing various characters in the upper right hand corner of
- my screen when Coherent boots.
-
- - These are used by MWC for debugging some installation
- problems. If installation fails to boot, the last character(s)
- displayed in the corner of the screen will give a significant
- clue as to where the failure occurred.
-
- 3) I get a core dump during the installation. The last digits of the
- eip register are 2EF.
-
- - Call MWC for a new set of installation diskettes.
-
- 4) I see a prepare_gift() message when Coherent boots.
-
- - The tertiary boot program, /tboot, is attempting to read your
- CMOS to get your hard drive parameters and other information.
- This process met with an unexpected error, usually related to
- the initialization of cache memory. If Coherent continues to boot
- and run, ignore the message. If the boot fails, try this:
-
- - hit <space> when prompted by tboot to abort the
- boot process. Type 'info' at the first '?' prompt.
- Ignore the returned data. At the next '?' prompt,
- type 'update' or 'begin' if updating or installing,
- or enter the name of the kernel to boot. Follow
- this procedure exactly. Do NOT try the 'info' command
- more than once.
-
- 5) When booting the installation, I come to a # prompt with a message
- displayed that I didn't boot properly and need to reboot.
-
- - tboot failed to pass what you typed at the '?' prompt
- to the installation program. A prepare_gift() message
- was probably displayed before this, sometimes too quickly
- to be seen unless one is looking for it specifically.
- One can either reboot and use the procedure from item #4
- (above), or type 'build' at the # prompt to install, or
- type 'build -u' at the # prompt to update from 3.x.
-
- 6) During boot, I see a message about not being able to brelease a
- modified buffer.
-
- - In most cases, Coherent will continue to boot normally. In some,
- the message will scroll endlessly. This is an indication of an
- incompatible bios and is a very rare case. The Epson bios set
- has sometimes produced this problem. If at all possible, update
- the bios chips in the computer. Phoenix is the bios chipset
- MWC recommends.
-
- 7) After installing disk #1, I reboot Coherent from the hard drive, but
- am never prompted to enter a diskette -or-, I reboot Coherent from the
- hard drive, and the system hangs with a Coherent banner message on the
- screen.
-
- - Thou hast most likely chosen to use either virtual consoles,
- or no virtual consoles but did select a loadable keyboard
- table. Coherent is hanging at the point where keyboard initialization
- takes place, indicating that the keyboard does not properly support
- IBM scan code 3. This is a different keyboard mode than DOS
- uses, and probably a good 10% of keyboards of Asian origin will
- have problems with this. Reinstallation without virtual consoles
- nor loadable keyboard tables should resolve this.
-
- 8) All diskettes install without a hitch, but after rebooting, fsck finds
- all sorts of DUP blocks and bad i-nodes.
-
- - This is rare, but is usually the result of installing onto a
- large partition. This is possibly related to sector translation
- firmware and/or the manner in which the firmware deals with
- bad blocks... we don't know yet. Break the large partition into
- smaller partitions and try installation again. If this is an ESDI
- drive, and the controller is doing sector translation, try switching
- it to native mode.
-
-
- 4.0 Binary compatability with other software:
- --------------------------------------------
-
- Coherent 4.x compiles and runs COFF executables. Third party COFF software
- will most likely run if the following conditions are true:
-
- - does NOT use shared memory nor shared libraries. We plan to
- implement these in the next release of Coherent. Coherent
- 4.0 shared memory is not System V compliant.
-
- - does NOT rely on sockets nor streams. Again, we plan to have
- have at least one of these in the next release.
-
- - does NOT use graphics. Coherent 4.0 is strictly a text-based
- system. Again, we plan to have some form of graphics support
- in the future.
-
- Some examples of 3rd party software running under Coherent 4.x:
- ACUCOBOL
- Xtree
- BASIS International BBX/Progression 3 (BASIC)
- FilePro
-
- - For more info, please contact MWC, or email sales@mwc.com.
-
-
- Compiling programs:
- -------------------
-
- 1) The compiler is complaining about not enough memory.
-
- - You may have a significant amount of memory, say 2 or 4 Megabytes,
- but one must also account for other running processes. The compiler
- by default tries to do all of its work in core (memory). If it
- aborts due to not enough memory, then add a -T0 to your cc command
- line. This will force the compiler to use temporary files on
- the hard drive, rather than in core.
-
- 2) I'm trying to port software from a bbs or the net. Is Coherent closer to
- System V or BSD?
-
- - You should select System V wherever possible. We tend to
- avoid BSDisms.
-
- 3) When compiling a package, the linker complains that getwd() doesn't
- exist. This worked under 3.x. What happened?
-
- - With Coherent 4.0, we have gone to getcwd() in place of
- getwd(). We have supplied _getwd() for people that need
- getwd(), but we are planning on dropping this in the
- future.
-
-
- Help with serial ports and terminals:
- -------------------------------------
- d10590@tanus.oz.au (Robert Chalmers) Coherent V4.0/4.01.
- Thanks, Robert!
-
- If you follow the installation instructions, and choose their defaults,
- you will end up with a ttys file very similar to the following.
-
- 0lPcom1l <--|
- 0lPcom2l | -- The four standard COM1, COM2,
- 0lPcom3l | COM3 & COM4 ports. NOT CONFIGURED.
- 0lPcom4l <--| See the notes below for configuration.
- 1lPmono0 <--|
- 1lPmono1 | -- The terminal virtual consoles.
- 1lPmono2 | These REPLACE the V3.x's 1Pconsole
- 1lPmono3 <--| entry in that versions ttys file.
- You dont have to touch these.
-
- For example, on my system I have the following hardware. One standard
- HDD/FDD Controller (IDE) with COM1, COM2 and LPT1 on board, and enabled.
- These live at 3F8 - IRQ4, and 2F8 - IRQ3. LPT1 uses 378 and IRQ7.
-
- One standard Taiwan Multi I/O card with 2 COM ports, one printer port, and
- one game port. This card can be configured as COM1/2 or COM3/4, and LPT1
- or LPT2. I have the jumpers set for the following. COM3 at 3E8 - IRQ4 and
- COM4 at 2E8 - IRQ3, with the second printer, LPT2 at 278 - IRQ5.
-
- Now, setting them up, as applied to this type of 2 board setup. If you are
- not sure if your installation configured the ports correctly, then follow
- the instructions in the Release Notes and Installation Guide under 'Asy'
- exactly as they appear, regarding the making of the devices. Dont change
- anything. yet. Now, the thing to note is the rule on IRQs and Polling. If
- you are using COM2 as your modem port, (seems to be the most used option),
- and COM1 as a terminal connection, and both are using IRQs, then the other
- two must be Polled. COM3 and COM4 must be Polled. Observe my settings
- listed,
-
- 0lPcom1l <--- Serial terminal on COM1. IRQ4
- 1rLcom2r <--- Modem, incoming, on COM2. IRQ3
- 0lLcom2l <--- Modem, outgoing (the same modem) on COM2. IRQ3
- 0lPcom3pl <--- Serial terminal on COM3. Polled
- 0lPcom4pl <--- Serial terminal on COM4. Polled
- 1lPmono0 <-|
- 1lPmono1 |
- 1lPmono2 | --virtual screens.
- 1lPmono3 <-|
-
- The Serial terminals are shown as 'disabled' in the above listing, but when
- they are connected, you simply type 'enable com3pl' and presto!, you get a
- login prompt on that terminal.
-
- In SUMMARY:
- Install with all defaults.
- Run the three configuration commands in the Asy entry.
- The asyxxx entries in your /dev directory are the prototypes for
- the comxx devices, so you can ignore them for the purposes of this.
- Decide which lines you will use, and check your IRQ/Poll combination.
- Check your physical wiring.
-
- For terminals, you only need three wires:
-
- D25 connectors. TXD to RXD, RXD to TXD, Common Ground.
- 2 --> 3
- 3 <-- 2
- 7 <-> 7
- D9 connector. TXD to RXD, RXD to TXD, Common Ground.
- 2 --> 3
- 3 <-- 2
- 5 <-> 5
-
- In the above setting, to call out on the modem, you MUST type
- 'disable com2r' before you can call out on com2l. When you are finished,
- type 'enable com2r' to put your modem back on line.
-
- Other things of note: Old Xt's with a com port and any version of
- TELIX/PROCOMM/etc etc make good cheap terminals, as do old terminals that
- businesses throw away as obsolete.
-
- Windows 3.1's Terminal will emulate a vt100. If you have a second PC
- connected to a Coherent serial port, its 'almost!' like having Xterm
- running Coherent in a Term window. You can even cut and paste between Word
- for Windows etc and vi. So who needs X I ask?
-
-
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-
-
-
-
-
-
- --
- Michael Willett, mike@array.com uupsi!monarch!mike uunet!csn!monarch!mike
- So much fun, so little time to enjoy it...
-
-