Messages in this thread |  | | Date | Sat, 22 Jun 1996 23:30:04 -0700 | From | Steve VanDevender <> | Subject | Re: Problem with sound driver in 2.0.0 |
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Todd Graham Lewis writes: > This has been raised before. > > As I remember it, there is a problem with (certain?) sound cards and > (certain?) SCSI controllers. It relates to DMA usage by both of them > It only happens under doom, I think, because doom's sound access keeps > the DMA channel open long enough to coincide with SCSI events.
Actually, I figured out that the problem I was having with my SCSI disk was related to queueing and not DMA. Since I set the tagged queue length to 1 in the BusLogic SCSI driver I haven't had any problems whatsoever with my SCSI disk, even under fairly heavy load and with the card's DMA transfer rate turned up to 8 Mbyte/s.
On the other hand, the sound driver works (or fails to work) just as it did before in DOOM, and after some random amount of time (usually 5-15 minutes of play) the sound stops and I get the "DMA (output) timed out - IRQ/DRQ conflict?" messsage although no such conflict exists on my system. I should also note that this happened when I had all IDE disks, and so far I haven't seen any noticeable difference in this behavior as a result of using SCSI instead of IDE.
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