[Coco] Fwd: Re: Video band width and accessing video memory
dave at davebiz.com
Tue Jun 4 20:32:32 EDT 2019
Let's just say that with 120ns DRAM and the fact that the GIME has a
28+MHz clock, it seems that it could have been designed to do 256
colors. And as Jim pointed out in an earlier message there probably is
a way to steal a little time away from the 6809's side of the clock
too. Whether the 256-color mode is there or not we'll probably never
know. My guess is that it was on the drawing board and maybe even in a
prototype but because of one problem or another it never made it into
the final version. But have no fear, GIME X will soon be here!
On 6/4/2019 6:59 PM, Walter Zambotti wrote:
> So irrespective of whether the final coco3 had limitations if the gime
> isn't constrained then the designers could have added the extra hidden
> 256 color mode.
> So back to being a mystery I suppose.
> Sent from my Xperia by Sony smartphone
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