How Can I set up DMA operation with my own PC software application?

Hello Hey Hey,

Thank you for your response, that was very informative and cleared up a lot.

I have atleast one more point of confusion. There are two Chaining DMA Descriptor Headers at offset 0x00 and 0x10. The first for write and the other for read. Why is there a Direction bit in the Control Fields (Table 7-4 of PCI Express Compilers Users Guide 8.0)? Is this a redudant thing, or is there some significance to this bit. To me, I would assume the registers at 0x00 and 0x10 specify the direction.

Thanks.