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Article #1105

Re: DOS beep kills Warp

#1105
From: Cornel Huth
Date: Thu, 02 Mar 1995 14:06
28 lines
2422 bytes
chumble@glassnet.com writes:
>problem.  Telemate works fine until it emits a 'beep'.
>Result?  Trap 2...  total macho-hango.  Big Red Switch Time.  All because
>But, on the other, there is this DOS program that can kick an entire
>OS/2 kernel into touch.... on this particular machine.  This is worrying.

To make a beep you have to go directly to, among other things, the 
keyboard controller (weird, huh?).  Bit2 of the 8042 (I'm assuming
you system is compatible) controls if parity is to generate an NMI
on failure (your x-cmos setup may have a selection to set/reset this
bit).  Anyway, if you have parity check disabled (do you?), and if
Telemate sets this to enabled, well, pow!  NMI is generated (if there
is a cause).  NMI=Trap2.  My guess, if Telemate is the only cause,
is that Telemate is buggin' the 8042 bits.  Check to see if there's
an update to that program.  Either than or find some way to keep 
Telemate's hands off the controller.

>BTW, Telemate works very well on all other OS/2 boxes here.. beeps and all.
>(In fact, =everything= so far works fine....apart from mscdex.exe...Grrr!)

Then it could mean that your machine is not 100% compatible (it's pretty
common when it comes to the keyboard controller).  Report it to the
Telemate author; only he can fix it (if what I say is the case).
-- 
                                cornel@crl.com 
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From: cornel@crl.com (Cornel Huth)
Newsgroups: demon.ip.support.os2,comp.os.os2.misc,comp.os.os2.setup
Subject: Re: DOS beep kills Warp
Date: 2 Mar 1995 06:06:45 -0800
Organization: From the 40th Floor in San Antonio, Texas
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