I know DMA means Direct Memory Access where rather than passing through the processor from one device's memory to another it goes through the DMA chip, but how can I use it/program it in my OS? I checked OSDever's site and they don't have much on it.

Here's the tutorial where I learned about it:
http://inglorion.net/documents/tutorials/x86ostut/floppy/

Funny... I was there a week ago, but for something else! Thanks!

1. Brey The Intel microprocessors ... 2006 Pearson 0131195069
2. Triebel The 8088 and 8086 microprocessors... 2003 Pearson 0130417742
3. Chebotko Master Class Assembly Language 1995 wrox
These three books all have good examples...All are available by interlibrary loan, though the Brey text may only be available as an older edition, but they will work fine for DMA controller....

One thing you need to watch is paging as in Pmode and 64k page as in DMA are not the same.

Thanks for all the help!

And keep in mind that x86 DMA isn't really usable for generic memory blits...