[comp.os.coherent] Com problems

dve@zooid.uucp (David Mason) (06/08/91)

I'm using Coherent 3.1 on a 286-12 system with 4MB of memory, and a
2400 baud modem on COM1 and a 1200 baud on COM2. I'm having problems
with the COM1 & COM2 drivers, especially after my system calls out
for its uucp connection. Sometimes the TR isn't set properly so the
modem doesn't answer the phone, other times the modem is left in
echo mode so it sends the "connect" message and calls can't get
through. 

I also occasionally get the slow output problem that I thought was
cured with 3.1, that is, the caller connects at 2400 baud but the
text comes out at 300 baud speed and the caller can't type anything.

I wrote a script which disables the modems, does a kill quit, then
enables the modem and this usually fixes the problem. It also
happens at other times for normal callers. I'm trying to run a BBS
with Coherent and everything works well except this one major
glitch. I can't have the system randomly going down.
 
Any help would be appreciated..

 
PS. can anyone explain why "exec sh" causes the console to lock up?