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PCI Bus Master DMA




Hi

I have a ATA hard disk connected to PCI bus. I want to transfer some data
from the hard disk via DMA. How to do that? I have the following questions.
Platform interested is MS-DOS.

Which is PCI bus master Chip 82371? or any other
What is the base address of the PCI bus master.

Is there any documentation or Source Code available.

Thanks in advance

Shibu baby