Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!cbfsb!cbnewsb.cb.att.com!mbb
From: mbb@cbnewsb.cb.att.com (martin.brilliant)
Newsgroups: comp.binaries.ibm.pc.d
Subject: v11i233, v11i233: conex60, communications program
Summary: Won't work on COM4
Message-ID: <1991Apr25.030426.11398@cbfsb.att.com>
Date: 25 Apr 91 03:04:26 GMT
Sender: news@cbfsb.att.com
Organization: AT&T Bell Laboratories
Lines: 33

I tried CONEX60 on my XTurbo10 because I liked the idea of having a
graphics terminal emulator.  For various reasons I have a mouse on
COM1 and a printer on COM2, so my 1200-baud modem is configured as
COM4.  This works well with Boyan 4.0 as well as another terminal
emulator used at Bell Labs.

The first time I tried to configure CONEX for COM4, it told me COM4
wasn't installed.  I fixed that by entering the port address of COM4
in the port table in the kernel, where DOS looks for port definitions.
After that, CONEX accepted the configuration, and dialed out when I
typed in the modem command to dial, and the modem established the
connection.

Then there was a more serious problem: I couldn't receive anything.
I noticed also that when the modem echoed the dialing command, each
character appeared on the screen only after I typed the following
character.  After the connection was made, I got only odd single
isolated characters.  If I stayed in command mode, without dialing,
and just gave the modem commands, the echo delay increased to two
characters, and then more.

I suspect that CONEX is not responding to interrupts and therefore
not reading received characters except when it sends one.  But I
don't really understand how that works.

Has anybody had any better luck with CONEX on any port, but in
particular on COM4?  And does anybody have any idea why I'm having
trouble or any suggestions on how to fix it?
-- 

                Martin B. Brilliant             hoqax!marty
                (Winnertech Corporation)        HO 2J-528
                                                (908)949-1215