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added NES mapper 176

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added NES mapper 176, tested working
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nsx0r 2022-11-24 22:18:46 +01:00 committed by GitHub
parent a93a9e51de
commit 2c477ddae1
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1 changed files with 48 additions and 0 deletions
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Cart_Reader/NES.ino
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@ -105,6 +105,7 @@ static const byte PROGMEM mapsize[] = {
155, 3, 3, 3, 5, 0, 1, // mmc1 variant [sram r/w]
158, 3, 3, 5, 5, 0, 0, // tengen rambo-1 variant (alien syndrome (u)) [UNLICENSED]
159, 3, 4, 5, 6, 1, 1, // bandai x24c01 [eep r/w]
176, 4, 4, 5, 5, 0, 0, // 8025 enhanced MMC3 [UNLICENSED]
180, 3, 3, 0, 0, 0, 0, // unrom variant (crazy climber)
184, 1, 1, 2, 3, 0, 0, // sunsoft 1
185, 0, 1, 1, 1, 0, 0, // cnrom lockout
@ -3111,6 +3112,25 @@ void readPRG(boolean readrom) {
}
break;
case 176:
banks = int_pow(2, prgsize) * 2;
write_prg_byte(0x5FF3, 0); // extended MMC3 mode: disabled
write_prg_byte(0x5FF0, 1); // 256K outer bank mode
for (int i = 0; i < banks-3; i += 2) {
write_prg_byte(0x5FF1, (i & 0xE0) >> 1); // outer bank select
write_prg_byte(0x8000, 6);
write_prg_byte(0x8001, i);
write_prg_byte(0x8000, 7);
write_prg_byte(0x8001, i + 1);
for (word address = 0x0; address < 0x4000; address += 512) {
dumpPRG(base, address);
}
}
for (word address = 0x4000; address < 0x8000; address += 512) {
dumpPRG(base, address);
}
break;
case 200:
banks = int_pow(2, prgsize);
for (int i = 0; i < banks; i++) {
@ -3920,6 +3940,34 @@ void readCHR(boolean readrom) {
}
break;
case 176:
banks = int_pow(2, chrsize) * 4;
write_prg_byte(0x5FF3, 0); // extended MMC3 mode: disabled
write_prg_byte(0x5FF0, 1); // 256K outer bank mode
for (int i = 0; i < banks; i += 8) {
write_prg_byte(0x5FF2, (i & 0x700) >> 3); // outer 256k bank
write_prg_byte(0x8000, 0);
write_prg_byte(0x8001, i);
write_prg_byte(0x8000, 0x0A);
write_prg_byte(0x8001, i + 1);
write_prg_byte(0x8000, 1);
write_prg_byte(0x8001, i + 2);
write_prg_byte(0x8000, 0x0B);
write_prg_byte(0x8001, i + 3);
write_prg_byte(0x8000, 2);
write_prg_byte(0x8001, i + 4);
write_prg_byte(0x8000, 3);
write_prg_byte(0x8001, i + 5);
write_prg_byte(0x8000, 4);
write_prg_byte(0x8001, i + 6);
write_prg_byte(0x8000, 5);
write_prg_byte(0x8001, i + 7);
for (word address = 0x0; address < 0x2000; address += 512) {
dumpCHR(address);
}
}
break;
case 184: // 16K/32K
banks = int_pow(2, chrsize);
for (int i = 0; i < banks; i++) { // 4K Banks