Olaf Seibert wrote:
>
> On Mon, 19 Apr 1999, Andre Fachat wrote:
>
> > Of course the PET has it easier, as only the character data
> > is to be read from memory, not the pixel data.
> > But it reads the character data in each scanline, so you can
> > change characters "within" the character.
>
> There was actually a Cursor (demo) program that did that.
> Unfortunately, I've never seen it work reliably. IIRC, that was on
> an older model PET that still was 60Hz, so maybe there are more
> subtle timing differences between european and american PETs than
> that. Or it was simply sloppily programmed, of course. Cycle-counting
> had certainly not become the art as it became on the 64.
it's called HI-RES, used to mess with it in high school, pretty solid
interrupts, very few jitters, something like a 4x8 'character' display, very
controlled, mot much useful beyond demo purposes only.
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Commodore 8-bit page at: http://www.jps.net/foxnhare/commodore.html
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