Date: Sun, 12 May 1996 20:20:29 -0700 From: "Amancio Hasty Jr." <hasty@rah.star-gate.com> To: Sujal Patel <smpatel@umiacs.umd.edu> Cc: multimedia@freebsd.org, hackers@freebsd.org Subject: Re: snd in -current, vmix, misc Message-ID: <199605130320.UAA10431@rah.star-gate.com> In-Reply-To: Your message of "Sun, 12 May 1996 23:04:48 EDT." <Pine.NEB.3.92.960512224936.296J-100000@xi.dorm.umd.edu>
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> On Sun, 12 May 1996, Amancio Hasty Jr. wrote: > > > Care to enlighten us how we can tell isa.c that the dma > > is completed when we use isa_dmastart and auto dma initialize? > > Oops... Sorry, didn't realize that you've got auto dma here. This is a > problem (there's actually a note about this in isa.c). The ad1848 driver > solves this by calling isa_dmadone when an interrupt occurs. I guess with > the GUS, the interrupt doesn't fall through all the layers it should to > trigger this? > > > Sujal > Oh, I can call isa_dmadone however I think is a waste unless we intent to shared dma channels and even then it makes no sense. I wonder what the engineer who decided that we shall call isa_dmadone after we get a dma interrupt after a call to isa_dmastart had in mind?? Tnks, Amancio
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