[349] in OS/2_Discussion
Re: OS/2 Warp installation problem
daemon@ATHENA.MIT.EDU (Robert Becker)
Tue Nov 15 22:31:23 1994
From: Robert Becker <robertb@math.mit.edu>
To: jokim@MIT.EDU
Date: Tue, 15 Nov 1994 22:30:43 -0500 (EST)
Cc: os2partners@MIT.EDU
In-Reply-To: <74921.jokim@mit.edu> from "John H. Kim" at Nov 15, 94 08:48:41 pm
John H. Kim wrote...
- In message Tue, 15 Nov 1994 10:35:26 -0500 (EST),
- Robert Becker <robertb@math.mit.edu> writes:
-
- > IBM's help (granted I called the wrong number) was pretty useless
- > since all it said was to check the IRQ's and ports. Ah well.
-
- Sounds like the correct diagnosis.
-
- > I tried disabling COM2 on the serial/parallel/game port card, but
- > that disabled COM2 throughout the entire system. Oddly, when I
- > disabled COM2, it also disabled COM3, although that works off
- > COM1.
-
- The AT only supports two COM ports. DOS gets around it by sharing
- interrupts, which OS/2 doesn't allow. So to be absolutely sure, you'd
- be best off disabling COM2, COM3, and COM4. If you've got a mouse, put
- it on COM1, and put the modem (I presume it's an internal since you said
- you disabled COM2 on the serial card trying to solve the problem). If
- you've got a bus mouse, even better, disable ALL the COM ports on the
- serial card and see if the modem works. Then you can try adding in COM
- ports one by one.
John, you put me on the right track. The difficulty wasn't
anything OS/2 did, it was how the serial board was set up. Get
this: the serial board was set up for COM1, COM3, and COM4. OS/2
saw COM1, COM2, and COM3. No wonder the modem never responded:
it was looking at the address for COM4, and OS/2 was looking at
the address for COM2! That's how it was set up at the store
where I bought the machine. I reset the board to see COM1, COM2,
and COM3, and now the modem works! Hallelujah!
Robert
--------------
Robert Becker, Senior Secretary (Technical)
Dept. of Mathematics, 2-332 fax (617)253-4358
M.I.T., Cambridge, MA 02139-4307 (617)253-1797
