On Wed, 21 Jul 1999, Bill Studenmund wrote:

> I don't think so, unfortunatly. As I remember it, the IOP's don't do DMA,
> they off-load the I/O. The difference is that the CPU writes a whole
> buffer to the IOP, and then the IOP does its thing. Or the IOP says, "I
> have data," and the CPU reads a whole block at a time. It's not DMA, but
> it's much more efficient. :-)

Sounds an awful lot like DMA, just using a different physical address for
the buffer and maybe having to program the IOP before you send it a start
command.  Is it mostly just an issue of terminology or is there a
substantial difference there that I'm missing?


Just curious,
David