UPDATE
Changes:
- I've enabled the memory contention emulation, and now Manic Miner is still too fast, but just a little bit, not a lot like before. The rainbow effects in Zynaps and Uridium now show properly, and the border change in Aquaplane is nearer its correct place, though still not perfect.
- Framerate has been changed from 25fps to 50fps, to show the fast changing colour effect in Aquaplane mountains. To achieve this I needed to increase the CPU speed from 133 to 175MHz.
Heres whats new:
While investigating the abnormal high speed of Manic Miner, I found a quite ugly bug that made all repeat instructions (LDIR,LDDR,CPIR,CPDR,INDR,INIR,OTIR,OTDR) execute 8 t-states faster than they should.
The most visible improvement that I've noticed is the lack of glitches in North Star, but I'm sure other games may have improved too. Too bad Manic Miner is still too fast...
The most visible improvement that I've noticed is the lack of glitches in North Star, but I'm sure other games may have improved too. Too bad Manic Miner is still too fast...
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