Date: Mon, 15 May 2000 12:51:53 +0200 (CEST)
From: Stephan Diestelhorst <stephand AT cantor DOT hal DOT st DOT schule DOT de>
To: djgpp AT delorie DOT com
Subject: SB128 PCI IRQ-handling problems
Message-ID: <Pine.LNX.4.10.10005151242230.4063-100000@cantor.hal.st.schule.de>
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Reply-To: djgpp AT delorie DOT com

Dear djgpp folks,
  I'm in serious trouble with the Creative Labs soundcard SB128 PCI. I
wrote my own soundlibrary, (perhaps published soon) which worked well on
SB Pro and also on SB128 in the DOS Box of Win98.
But under DOS-Mode of Win98 my IRQ-handler doesn't seem to be called
correctly by the soundcard (better to say it's driver).

The handler is just a protected mode handler written in assembly.
I suppose that this are some protected mode problems, as the driver of the
soundcard is using VCPI stuff to emulate the SB 16 (could be exception
handling for several ports, etc.)

It is also strange that games like Quake I or DOOM (which are also using
protected mode) work fine.

Of course I can't expect to get detailed instructions, but I hope that
some of you had simillar problems and/or could give any advice.

Thanks for any support/help in advance,
  Stephan Diestelhorst aka. SyoN