[Coco] OS9 68K, MM/1 software and questions

Joel Ewy jcewy at swbell.net
Thu Dec 31 18:35:54 EST 2015


On 12/30/2015 10:58 PM, Joel Ewy wrote:
> ... The 68070 cpu is supposed to have some sort of DMA built-in. I 
> don't think K-Windows takes advantage of it, and I don't know if it 
> can be useful in moving large chunks of data around in memory for 
> games and whatnot, but it would be worth a look.
>
> JCE

I was wrong.  The MM/1 Technical Manual says that DMA is used for the 
Floppy, SCSI, and audio.  Still not clear to me whether it could be 
commandeered to move graphics data around.

JCE



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