Posted By
Twinspirit32 on 2017-01-07 10:38:30
| Re: Porting to Commodore Plus 4 of my game Genius, memory/bitmap mode questions..
About mapping hires bitmap area to Pg1 $8000-$9FFF and Pg2 $C000-$DFFF:
3 emulators, 3 different behavours:
Testing on VICE : Both areas /pages works fine without enabling RAM with $FF3F, it shows graphics RAM data correctly and game works fine. No need to enable RAM.
Testing on YAPE: Hires Page1 mapped at $8000-$9FFF works fine without enabling RAM with $FF3F, shows RAM data Hires Page2 mapped at $C000-$DFFF needs enabling RAM with $FF3F, shows ROM data
Testing on PLUS4EMU: Hires Page1 mapped at $8000-$9FFF needs enabling RAM with $FF3F, shows ROM data Hires Page2 mapped at $C000-$DFFFneeds enabling RAM with $FF3F, shows ROM data
Anyone have experience on real hardwere and knows what's the real behaviour of this Bitmap/TED addressing accessing?
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