Date: Sun, 18 May 1997 19:15:18 -0700 From: Amancio Hasty <hasty@rah.star-gate.com> To: Ben Cottrell <benco@pendor.mckusick.com> Cc: freebsd-multimedia@FreeBSD.ORG Subject: Re: Question about GUS MAX driver Message-ID: <199705190215.TAA00321@rah.star-gate.com> In-Reply-To: Your message of "Sun, 18 May 1997 18:45:45 PDT." <199705190145.SAA27570@pendor.mckusick.com>
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Can you try out the latest sound driver which I posted? ftp://rah.star-gate.com/pub/guspnp7.tar.gz I made a couple of simple mods to accommodate the gus max. Amancio >From The Desk Of Ben Cottrell : > Hi y'all, > > Sorry if this is a FAQ; I browsed the archives but couldn't find anything > specifically relating to my problem. > > I have a GUS MAX (1M memory), and I can play audio on it fine with FreeBSD > (for the most part; the first four seconds of sound are funky, and the > kernel logs a log of errors like "isa_dmastart: channel 5 busy", but that's > okay, I'm not picky). I have it set for IRQ 11, DRQ 5, flags 6, which should > theoretically allow for full-duplex and 16-bit DMA. > > The problem comes when I try to record. The symptoms are so weird that I > can't explain them in a coherent manner, but here is what I'm seeing, in no > particular order: > * Spontaneous play-thru (line in gets copied to line out). There is > some signal degradation here so I *assume* that it's going through > an A/D and D/A conversion, but I'm not positive. > * When I do any operations on /dev/dsp2 (the CS4231, according to > sndstat) an odd, subtle flanging effect creeps into above. > * wavrec, however, sees none of this. When I record a WAV of my > radio playing into line-in, with the level in the mixer set to > maximum, I play it back and get no signal, just odd crackling > that seems to come from no particular source--I tried plugging a > mike into the microphone jack too--no difference. > * Sometimes I get a "Sound: DMA timed out - IRQ/DRQ config error?" > kernel log. > > I'm running a kernel compiled from the 3.0-970209-SNAP sources. > > Anyone know what's up, or can point me to some documentation somewhere? I > poked through the files in /sys/i386/isa/sound, but device drivers are my > least favorite and least understood bit of the kernel, I'm afraid. > > Thanks! > ~Ben
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