On 26/07/2018 02:18, Mia Magnusson wrote: > Oh. But that must be the kind of software no-one wants to run? ;) Someone wants to run pet software? > Well, a cbm2 has hardware that's similar enough that I assume most > productivity software for PET would work. I'm not sure the basic & kernal is even compatible enough for that. Should be simple to try some programs in vice. > Emulating a VIC 20 would require something like an interrupt routine > copying a 22*23 screen onto the 40*25 screen and translate the VIC > registers, or just let basic programs without most pokes/peeks run by > just inserting a line feed at position 22. Make the kernal output stop at line 22 and patch the basic PEEK/POKE commands to remap the screen coordinates. You'd stick vic in a higher bank so that you can start vic 20 basic programs at the right place. You could add a timer to catch screen writes by assembly programs, I'm not sure it's worth the hassle. >> http://sleepingelephant.com/ipw-web/bulletin/bb/viewtopic.php?t=468 > Seems like a bad idea :) Probably, isn't everything commodore 8 bit related a bad idea? Porting the vic20 emulator to the p500 seems like a very bad idea.Received on 2018-07-26 06:00:05
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