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. -- 01000011 01001111 01001101 01001101 01001111 01000100 01001111 01010010 01000101 Larry Anderson - Sysop of Silicon Realms BBS (209) 754-1363 300-2400 baud Commodore 8-bit page at: http://www.jps.net/foxnhare/commodore.html 01000011 01001111 01001101 01010000 01010101 01010100 01000101 01010010 01010011 - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org.
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