Teaching kids about computers...

Mark Meiss chaosotter76 at gmail.com
Wed Nov 28 18:28:56 CST 2007


On Nov 28, 2007 7:16 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote:

>
> I think you mean 6847 here.
>
> In any case the video is geenrated by a combination of the 6883 SAM (which
> adderesses the main meory) and the 6847 VDG (which turns the data read
> from
> RAM into the video signal). IIRC, the semigraphics mode come from
> programming
> the SAM for graphics and the VDG fro text.


Right: the 6847, sorry.

(Out of idle and off-topic curiosity, does a Dragon also display "MICROSOFT"
on the screen when you do a "CLS 9"?)



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