[Coco] Coco3 question

[Joe F]

Yes, I need to know total scan lines, not active screen area. although I do
need to know how many scan lines  down each mode starts 192,199 and 225 if
anyone knows or can point to any documents. I've been guessing at it but I'm
sure I'm wrong.

thanks.


On 2/12/08, Robert Gault <robert.gault at worldnet.att.net> wrote:
>
> Joe F wrote:
> > Does anyone know if the coco3 has 262 or 263 scan lines.
> > the 6847 spec sheet indicates 262.5 but I'm not sure it applies to the
> GIME
> > as well.
> > thanks.
> >
>
> Those are the total number of scan lines per screen but it includes the
> blanking pulse, top, and bottom borders. There are only 192 effective
> lines of screen content with a 6847.
>
> The GIME extends this up to 225 lines of usable screen data. You still
> need to include blanking and border areas.
>
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