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Date: Wed, 31 May 1995 08:58:29 -0500 (CDT)
From: "Eric L. Hernes" <erich@rrnet.com>
Subject: sound blaster driver
To: freebsd-hackers@FreeBSD.org
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I'm having a bit of a problem with a sound-blaster card that i have here.
It's an ancient 8-bit model.  The card is recognized at bootup, but when
I cat somefile.au >/dev/audion, the first chunk of the sound file plays and
then just hangs, 'til i hit ^c.

This thing has behaved this way since 2.0R (but it worked under linux, yuck).
It hasn't really been a problem until now, as I am really close to having
convinced all of the linux users here to use FreeBSD for a production
sound/graphics platform. And we have thousands of these cards which we
will need to use.

The card is configured for dma1, irq7. 

config line looks like this:
device sb0      at isa? port 0x220 irq 7 conflicts drq 1 vector sbintr

probe looks like this...