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Nestopia does not ignore the upper bits of registers 5102 and 5103 for MMC5 #311

joepogo opened this Issue Mar 3, 2019 · 1 comment


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commented Mar 3, 2019

Nestopia MMC5 does not ignore the upper bits of registers 5102 and 5013 accurately. The attached code fixes this:

change line 1223 in MMC5.cpp to:

if ((data & 3) == Regs::WRK_WRITABLE_A)

and line 1229 to:

if ((data & 3) == Regs::WRK_WRITABLE_B)


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commented Mar 5, 2019

Thanks for the info. No time to look at it now, but will as soon as I get a chance to breathe again.

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