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Message
From: H. Peter Anvin<hpa@z...>
Date: Mon Dec 15 10:04:15 CET 2003
Subject: [oc] Where should be the DMA?
tomko81@h... wrote:
>
> Do modern motherboard implement the DMA controller on the North
> bridge PCI bus?
>
No, they don't. Slave-mode DMA, like you have described, is only
supported on the ISA/LPC bus.
Current PC systems do not have a DMA controller and can only perform DMA
while bus mastering. This is not a property of the PCI bus but of the
PC chipsets.
-hpa
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