Messages in this thread | | | Date | Mon, 31 Jan 2000 16:25:59 +0100 | From | Jamie Lokier <> | Subject | Re: Updated 2.3.x job list (its getting shorter) |
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Jeff Garzik wrote: > On Sun, 30 Jan 2000, Jamie Lokier wrote: > > How much hardware can do _ISA_ scatter/gather DMA? > > * allocate scatter-gather buffers > * point hardware to buffer #1 > * in interrupt handler or bottom half: > process buffer > point hardware at buffer #2 > > And now your old ISA hardware does scatter-gather.
Usually you don't need megs of DMA memory for that: you can just keep re-using the same buffers in a ring configuation.
-- Jamie
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