Subject: A-to-D with SBPRO on 1.0
To: None <netbsd-help@NetBSD.ORG>
From: Jeff CHILTON <chiltj@ois.com>
List: netbsd-help
Date: 01/14/1995 19:35:25
Hi all,
I'm wondering if anyone could tell me the secret to reading from the
/dev/audio device on NetBSD 1.0 with a Soundblaster "Pro" [1] in it.
Opened for write, it works as expected--I write bytes, sound issues
from the speaker. If I open read-only then my attempt to read just
blocks in read() until I ctrl-c it.
I've been amusing myself by looking at bsd_audio.c and sb.c, and by
putting printf's into same. This exercise seems to confirm that it
is sending the SB_DSP_RDMA command to the board (without error) but
the end-of-DMA interrupt service code never gets called.
What'd-ya think?
/jwc
[1] Ever notice how anything with "Pro" in it's name is strictly for
hobbyist-duty?