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From: brian@mediacity.com (Brian Litzinger)
Subject: Why does SMC Ultra Elite, mess up MPEG decoder?
To: freebsd-questions@FreeBSD.org
Date: Wed, 1 Mar 1995 00:52:45 -0800 (PST)
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I'm porting a device driver I wrote from BSDI to FreeBSD.  The driver
is for the Talisman MPEG decoder card (based on C-Cube CL480).  Output is
in a VGA window, or straight NTSC (Composite or S-Video). Does both
Video and Audio and takes MPEG Systems streams in directly and parses
internally.

I'm running 021095-SNAP.

The driver is working quite well, except for some reason when I
have an SMC Ultra Elite plugged in I can't read reliably from the
IO of the MPEG Decoder card, though I can write to it fine.  The
SMC Ultra Elite seems to stumble also.

ed1 at 0x300-0x31f irq 10 maddr 0xd8000 msize 16384 (SMC Ultra Elite)
tm0 at 0x700 irq 11 on isa

The Talisman uses io ports 0x700-0x703 and that is it. It uses
8bit io.

It works fine with a NE2000 card in place of the SMC Ultra Elite.

I experienced this same problem under BSDI, so I expect it has
something to do with the SMC card.

Any ideas?

I'm planning to publish the driver for all to use, so if access
to the source would help at this point, let me know.

Brian Litzinger
brian@easynet.com