[Coco] [color computer] Just imagining...

Paul T. Barton idezilla at yahoo.com
Tue Jan 31 14:12:28 EST 2006


Actually E-high is CPU and E-low is Video.
You got it right about the IDMA, and it
can work with a 6800/74ls783/mc6847 also,
with some glue logic. Motorola did an
app notes sheet about dual CPU's, interleaved
them.

Paul - idezilla

--- jdaggett at gate.net wrote:

> David
> 
> IDMA, Interleaved DMA. This is already being done on
> the Coco. The Video accesses ram when the E Clock is
> high and the CPU when the E clock is low. Tack on
> another CPU and you have contention with ram. 
> 
> james


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 



More information about the Coco mailing list