On Iau, 2003-04-24 at 11:31, joe briggs wrote:
> Specifically, if a PCI board is DMA'ing a block of data to main memory, how
> is the operation of the direct-connect IDE device impacted? When most PCI
> devices transfer data to main memory, don't they arbitrate the bus, become
> master, and blast it accross in chunks? Doesn't onboard IDE (legacy?) use
> the DMA controller (8237 derivate I gues) to transfer?
Onboard legacy mode IDE doing PCI DMA is doing it directly. How onboard
and southbridge IDE interact is a complicated field and chipset
dependant.
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This archive was generated by hypermail 2b29 : Wed Apr 30 2003 - 22:00:18 EST