On 7/11/06, Hamish Marson <[EMAIL PROTECTED]> wrote:
Hmm... Yeah... I'd love to know how to read a block (DMA?) over the PCI bus, and from attached memory, into local memory and then iterate over it (Kind of like the graphics engine is going to). Actually that's pretty much what the graphics engine core will have to do... Unless it's going to ork in some way I haven't anticipated. Maybe start off with how to read a block or a byte from attached memory, or from host memory? That's pretty much the bit that gets me wondering at the moment.
This is pretty advanced stuff, involving a lot of logic. Ultimately, the PCI controller will use a DMA control block that knows about host and graphics memory addresses and a word count and will make requests of appropriate length, etc. _______________________________________________ Open-graphics mailing list [email protected] http://lists.duskglow.com/mailman/listinfo/open-graphics List service provided by Duskglow Consulting, LLC (www.duskglow.com)
