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From: ej@kos.rci.dk (Erik W. Jeppesen)
Newsgroups: comp.windows.ms
Subject: Re: Dropped characters in Win. Comm programs at 19200 baud
Message-ID: <1138@kos.rci.dk>
Date: 18 Dec 90 07:45:04 GMT
References: <1990Dec13.062051.3478@amd.com> <6076@tuminfo1.lan.informatik.tu-muenchen.dbp.de>
Organization: RC International, Copenhagen, Denmark
Lines: 27

rommel@lan.informatik.tu-muenchen.dbp.de (Kai-Uwe Rommel) writes:

>Earlier I wrote:
>>I have used Terminal, WinQVT, UniCOM and Microphone II. They all drop
>>single characters randomly. Outside Windows, Qmodem 4.2b never drops any
>>characters.

>This is a problem of the COMM.DRV driver shipped with windows.

We are experiencing dropped characters at 19200 baud also outside windows
and have found that the DOS 3.30 keyboard driver (keyb.com) is the problem. 

Are characters dropped only when you use the keyboard, and have you tried
not to load the keyboard driver?

The reason that Qmodem and other comm programs don't drop characters is, I
suspect, that they use their own keyboard interrupt routine in order to be
able to remap the keyboard.

I posted this problem to two other groups recently, but didn't get any
reaction. I imagine that we haven't heard much of this problem because
you don't have to load a keyboard driver in the US!

Merry Christmas to you all,
-- 
Erik W. Jeppesen          ej@rci.dk         +45 42 65 80 00
RC International, Lautrupbjerg 1, DK-2750 Ballerup, Denmark