DV modifing com port base address

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1 total messages Started by Kevin Houle Tue, 26 Jan 1993 00:33

#1919

Author: Kevin Houle
Date: Tue, 26 Jan 1993 00:33

25 lines
1461 bytes

I just bought a 9600 baud modem, and am experiencing some strange
problems getting it to talk to my PC. The problem appears to be in
the computer's hardware and software, not the modem.

I'm using a Gateway 386sx-16 and am attempting to run the modem off
of COM A, which is configured for COM1 at IRQ4. This does NOT conflict
with any other IRQs as far as I know. (I have an internal modem on
COM2 at IRQ3 and that's all).

I have a utility called sysid.exe which reports system information.
From DOS, it reports both COM1 and COM2 as valid. If I go into Desqview,
open a DOS window and run sysid, it reports the base address for COM1
as being 000, which is way wrong. Does DV, or QEMM for that matter,
modify COM port base addresses?

All of my communications software (Telix and PC Plus) lock the computer
up when I try to access COM1. Another program, the modem doctor, sometimes
reports that the UART on COM1 is not generating any interrupts. This is
within DV.

Any help would be apprecated as I am most perplexed by this situation.


--
Kevin Houle     kjhoule@iowegia.uucp

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