[Coco] SCC66470B doc

[Joel Ewy]

Bob Devries wrote:
> I have just come across (and immediately scanned) a document called
> SCC66470B Video and System Controller Development Data. This is the
> VSC chip used in the MM/1 computer.
>
> If anyone is interested in a copy, shoot me an email.
>
> I also have one called SCC68070 16/32-bit Microprocessor Development
> Data (not yet scanned...)
>
> It seems the VSC can do 768 x 560 resolution. Has anyone tried this on
> the MM/1? I guess it would require a VGA monitor.
IIUC, the only way to get it to do 560 scan lines is to put it in the
280-line mode, which is only available at 50Hz, and then run it
interlaced.  So your monitor would have to accept VSYNC at 50Hz.  Maybe
in addition to a MultiSync monitor it would work on a PAL TV with a
SCART interface?  And of course you'd probably have to cook up your own
software or modify the windio driver, because K-Windows doesn't support
that screen resolution.

JCE
>
> -- 
> Regards, Bob Devries, Dalby, Queensland, Australia
>
> Isaiah 50:4 The sovereign Lord has given me
> the capacity to be his spokesman,
> so that I know how to help the weary.
>
> website: http://www.home.gil.com.au/~bdevasl
> my blog: http://bdevries.invigorated.org/
>
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