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Slightly off topic question—how hard is it to write an Apple II emulator compared to an NES emulator? Specifically, if I've already written an NES emulator, ass
by WoodenChair 6y ago
Slightly off topic question—how hard is it to write an Apple II emulator compared to an NES emulator? Specifically, if I've already written an NES emulator, assuming I can reuse most of the 6502 core, what are the minimum set of support chips I need to implement?
- acomjean 6y agoI don't think you'll know till you do it. The apple II is older than the NES, so not as sophisticated, so easier. But the designer (WOZ) was really good at pushing the existing hardware to the limit. I would suspect you'd want to target the newer //e and //c machine (64 & 128KB ram and 80 col cards with lower case) Graphics alone are strange especially the high res mode. (I used to program an apple //e in middle school..) https://en.wikipedia.org/wiki/Apple_II_graphics https://en.wikipedia.org/wiki/Apple_II_graphics but the apple 2 reference manuals are online (even if the scan isn't the best). https://archive.org/details/Apple_IIe_Technical_Reference_Manual/mode/2up https://archive.org/details/Apple_IIe_Technical_Reference_Ma... and https://archive.org/details/Apple_IIe_Reference_Manual/mode/2up https://archive.org/details/Apple_IIe_Reference_Manual/mode/...