Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!elroy.jpl.nasa.gov!ames!dftsrv!nssdcs.gsfc.nasa.gov!williams
From: williams@nssdcs.gsfc.nasa.gov (Jim Williams (SYSGROUP))
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Sound Blaster hates Bus Mouse
Message-ID: <3161@dftsrv.gsfc.nasa.gov>
Date: 20 Aug 90 00:52:08 GMT
Sender: news@dftsrv.gsfc.nasa.gov
Reply-To: williams@nssdcs.gsfc.nasa.gov (Jim Williams (SYSGROUP))
Organization: NSSDC Greenbelt Md.
Lines: 49

I've just spent several hours trying to debug a strange failure on my new
PC, and I haven't gotten anywhere, so I'm appealing to the collective wisdom
of the net.  Here goes...

The Hardware:
A generic 386 AT Clone, 25 MHz, 4MB RAM
85 MB SCSI Drive with an ST02 controller, two floppies (1.2MB and 1.44MB).
Generic (AD-450) I/O board, with 2 Serial, 1 Parallel, 1 Game Port.
Microsoft Bus Mouse
Sound Blaster sound card

The failure:
While using Kermit (version 3.01) to log in to work from home, (Courier
2400 modem) the system will suddenly stop writing incoming characters
onto the screen.  I can see them coming over the modem, I can give
commands to the system, and watch the modem Received Data light flash
just as expected but nothing writes to the screen.  If I exit Kermit
and restart it (the phone remains off hook) then suddenly everything is
ok.  File transfers are impossible in this mode.  The incoming
characters never make it to Kermit.

What I've done:
This is not a Kermit problem.  Procomm does the same thing.  I have
found the problem will go away if I remove either my Bus Mouse card or
my Sound Blaster card.  It only occurs if both cards are installed.
Note that it doesn't seem to matter if the drivers for the boards are
installed or not.  The physical presence of the boards is what
matters.  Since Com1 and Com2 are taking up Interrupts 4 and 3,
respectively, I have assigned Int 7 to the Sound Blaster and Int 5 to
the InPort (Bus Mouse).  These are the only choices possible.  The I/O
addresses do not overlap.  I have tried setting the I/O address on the
Sound Blaster to a few of the other choices.  I have tried the InPort
at both of its addresses.  I have removed the DMA jumper from the the
Soundblaster.  I have disabled the Game Port on the Sound Blaster
(there are no instructions for disabling the Game Port on the I/O
card).  None of this has had any effect.

	If I can't resolve this, I have few choices.  I can try and
return/sell the bus mouse in favor of a serial mouse.  I don't want to
do this, since I need both of my serial ports.  I would have to buy
a Com3/Com4 board at some point.   The other choice is to sell the
Sound Blaster, and I don't want to do that, either.

	Help!

Spoken: Jim Williams             Domain: williams@nssdcs.gsfc.nasa.gov
Phone: +1-301-555-1212           UUCP:   uunet!mimsy!williams
USPS: NASA/GSFC, Code 633, Greenbelt, MD 20771
Motto: There is no 'd' in "kluge"!  It rhymes with "deluge", not "sludge".