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- 9/10/87
- COMP - COMPosite device driver
-
- Written by "another madisonian"
- Patrick Brockill
-
- This is version 1.0 which is pretty much an untested/untried/
- un[anything else you can think of] version - i.e. it's still pretty rough.
- So, if (or, when) you encounter any bugs (i.e. trying to load up the same
- device twice and "crash!") lemme know. You can bet I'm not going to take any
- responsibility if COMP somehow screws your computer up. (i.e. officially: "I
- take no responsibility for COMP or anything it does.", etc.) To contact me,
- you can mail me on the ethernet at "brockill@math.wisc.edu.pade", or leave mail
- for me on the IBMUG BBS (madison- (608) 256-8088).
- Everything is free (no strings attached,) the sourcecode (when released,)
- will be free/etc. Completely public domain.
-
- Usage: in order to use COMP at all, you must include the following line
- in your CONFIG.SYS file as the LAST device loaded (!) -
- device=[path] comp.sys
- When you boot up the computer, COMP will give print a little ditty with an
- ego-booster (i.e. my name) to the screen to show that it has been loaded.
- If you don't include COMP as the last device loaded, it will only be able to
- 'see' the devices loaded before it, and any loaded after it COMP will be
- unaware of.
- After COMP is loaded, the following are active:
- COMP$ a new device COMP$ which performs slow i/o
- to the screen using vid intrpt 10hex. The
- only reason these i/o channels exist is so
- that if you CTTY COMP$ the system won't hang.
- statd get a list of char device driver names
- linkd [path] [device file] load up new device
- i.e. to load ANSI.SYS from the root dir,
- type : 'linkd \ansi.sys'
- ulinkd [device name] unlink device loaded by linkd
- note: device name is case sensitive, so
- to unlink the CON device, you must type
- 'CON' not 'con'. BUG: don't unlink the
- ANSI.SYS driver (although I'd suspect it's
- Ok to unlink NANSI,) as it remains resident
- even AFTER it's been unloaded (twilight
- zone music inserted here,) and will probably
- crash your system, too.
-
- NOTE: COMP currently uses interrupt 60hex for it's own uses, so computers
- which already have this interrupt set for some other important function
- will have to wait for the next version of COMP to come out. (Very soon)
-
- UPCOMING TIDBITS:
-
- 1) include a TSR program to echo everything to both COM1: and CON: when
- you CTTY COM1 (or 2). This is for those BBS'ers who'd like to offer shelling
- to DOS, but want to SEE what the intrepid user is messing up. The new command
- would be CTTY COMP$. Further, COMP would notice repeated errors by the COM
- devices, so if a user wasn't connected, we could put the standard device back
- to CON to continue about our business.
-
- 2) allow TSR programs to print to the current CONsole device. This is a
- real nuisance for us poor TSR program writers who all of a sudden realize
- interrupt 21hex is not re-entrant and cannot be used in most TSR applications.
-
- 3) allow the user to write simple char input and char output routines, and
- call them from COMP$. (i.e. COMP$, whenever asked for char i/o, will call your
- routine) However, most people will probably simply modify the sample device
- driver to do the same thing.
-
- 5) whatever else I, or anybody else, can dream up. (So, dream something
- up and leave me a message)
-
-
- NOTES---
- Ok, some of you real programmers out there wanna see the source and
- know how this thing works. I plan to release the source very soon (it's not
- too long,) and include a sample device driver, as well as tips in writing
- device drivers and interrupt routines. I have set up interrupt 60hex to be
- used by any application and have included some useful functions - i.e. find
- file size, load file into address, get address of first device driver, etc..
- This is the reason I have not yet released the code - I may change these
- functions and would like to tidy up things a bit. If you're so impatient that
- you can't wait (screwing up mouth,) contact me voice at (608) 238-1475 (after
- 5:30,) or (608) 263-9720 between 2:00pm and 5:00pm.
-
- ON THE SHELF:
-
- Diplomacy! (yeah!) Well, it's already written in Turbo Pascal (later to
- be rewritten in C,) and is intended for shelling options on BBSs. It runs
- about 40 pages long (not including libraries/etc.), and is probably some pascal
- author's epitome of bad programming. Needs some ironing and beefing up first,
- so if any interested programmers out there want to finish it.. :)
-