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Fix PRG in 32K bank mode 

PRG register $5117 value is used for the entire $8000-$FFFF CPU range in 32K mode.

See https://www.nesdev.org/wiki/MMC5#PRG_mode_($5100) in PRG bankswitching
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negativeExponent 2023-06-27 09:03:46 +08:00 committed by GitHub
parent 99bb679ac5
commit 3f1e080672
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1 changed files with 1 additions and 1 deletions
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src/boards/mmc5.cpp
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@ -424,7 +424,7 @@ static void MMC5PRG(void) {
switch (mmc5psize & 3) { switch (mmc5psize & 3) {
case 0: case 0:
MMC5ROMWrProtect[0] = MMC5ROMWrProtect[1] = MMC5ROMWrProtect[2] = MMC5ROMWrProtect[3] = 1; MMC5ROMWrProtect[0] = MMC5ROMWrProtect[1] = MMC5ROMWrProtect[2] = MMC5ROMWrProtect[3] = 1;
setprg32(0x8000, ((PRGBanks[1] & 0x7F) >> 2)); setprg32(0x8000, ((PRGBanks[3] & 0x7F) >> 2));
for (x = 0; x < 4; x++) for (x = 0; x < 4; x++)
MMC5MemIn[1 + x] = 1; MMC5MemIn[1 + x] = 1;
break; break;