Comments (3)
Actually, does it work different on the 32X, or was the emulator I was using at the time (probably Kega) just bugged?
from sonic-2-clone-driver-v2.
I'm just now noticing that I never explained what the issue even is.
Graphics_Flags
in the Sonic disassemblies is a copy of some random IO register thingy ($A10001
). Some bit in it (bit 6) indicates whether the console is a PAL model or not. When testing 32X support with an emulator (probably Kega) I noticed that this bit no longer seemed to indicate PAL consoles - it was always indicating NTSC models.
My point is that bit 6 of $A10001
doesn't seem to work properly in 32X games, but I'm not sure whether this is the case on real hardware or if it's just a bug in Kega.
Another way to detect PAL consoles is to check bit 8 of the VDP control port. This is the method Sonic 2's sound driver uses (see the SoundDriverLoad
function). It may be worth switching to this method instead, just in case.
from sonic-2-clone-driver-v2.
I wonder if 32X Technical Bulletin #24 has anything to do with this.
from sonic-2-clone-driver-v2.
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from sonic-2-clone-driver-v2.