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- Newsgroups: comp.os.os2.misc
- Path: sparky!uunet!darwin.sura.net!Sirius.dfn.de!math.fu-berlin.de!zrz.tu-berlin.de!cs.tu-berlin.de!amadeus
- From: amadeus@opal.cs.tu-berlin.de (Axel Richrath)
- Subject: COM3, COM4
- Message-ID: <1992Jul27.223810.11462@cs.tu-berlin.de>
- Sender: news@cs.tu-berlin.de
- Organization: Techn. University of Berlin, Germany
- Distribution: fb20
- Date: Mon, 27 Jul 1992 22:38:10 GMT
- Lines: 37
-
- hello!
-
- i have tried to install additional COM3 and COM4.
- 1) i jumpered the card so that trhe printer port of the new card is
- disabled, and also i disabled the second COM-port (COM2/4)
- 2) i jumpered the first COM-port to be COM3
- 3) i selected interrupt 5 for this new COM3. i thought i could do this, coz
- i disabled the printer-port that was LPT2 before and used interrupt 5
- 4) i booted with a DOS-disk running checkit and it said, that i exactly
- have the configration i wanted to have (COM1=int4, COM2=int3, COM3=int5,
- LPT1=int7)
- 5) then i booted OS/2 with the following lines in CONFIG.SYS:
- DEVICE=C:\OS2\COM.SYS (3,3E8,5)
- DEVICE=C:\OS2\MDOS\VCOM.SYS (3,3E8,5)
- 6) i connected an old cume-terminal to COM3 and tried to access it with a
- selfmade term-prg (that worked with COM2 already!) - nothing happened
- 7) i connected a modem to COM3 without accessing COM3 with any program -
- the TR-led on the modem went on
- 8) i did the same than in 6) ;), connected the modem to COM2 again (where
- normally is connected) and started te/2 - the result was, that OS/2 told me
- that i cant access COM2 coz it doesnt function :O
- 9) i shut down the process accessing COM3 and restarted te/2 at COM2 - it
- worked... :I
-
- this is a long and sad history - the question is - has anybody a clue where
- my mistake could be???
-
- greetings... axel
-
-
- ps: the description of the io-card's jumpers was wrong - i tried all
- possible combinations as long as i got the right messages from checkit.
- when i started checkit from OS/2 it showed a different interrupt assignment
- - but i assume that OS/2 internally maps the interrupts, or what? :)
- and surely checkit isnt made for OS/2 - so after showing me this different
- assignment it completely crashed :)
-
-