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Update NES.ino - fix for mapper 206.1, little cleanup

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Update NES.ino - fix for mapper 206.1, little cleanup
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nsx0r 2025-01-01 21:30:36 +00:00 committed by GitHub
parent 1cf4b4c076
commit 8ccafde72a
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1 changed files with 53 additions and 50 deletions
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103
Cart_Reader/NES.ino
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@ -1905,59 +1905,63 @@ void readPRG(bool readrom) {
case 268: // submapper 0
case 315:
case 366:
banks = int_pow(2, prgsize) * 2;
write_prg_byte(0xA001, 0x80); // Block Register - PRG RAM Chip Enable, Writable
if (mapper == 126) {
write_prg_byte(0x6003, 0x00); // set MMC3 banking mode
}
if (mapper == 134) {
write_prg_byte(0x6000, 0x00); // set MMC3 banking mode
}
if (mapper == 176) {
write_prg_byte(0x5FF3, 0); // extended MMC3 mode: disabled
write_prg_byte(0x5FF0, 1); // 256K outer bank mode
}
for (size_t i = 0; i < banks; i += 1) {
if (mapper == 37) {
if (i == 0) {
write_prg_byte(0x6000, 0); // Switch to Lower Block ($0000-$FFFF)
} else if (i == 8) {
write_prg_byte(0x6000, 3); // Switch to 2nd 64K Block ($10000-$1FFFF)
} else if (i == 16) {
write_prg_byte(0x6000, 4); // Switch to 128K Block ($20000-$3FFFF)
}
}
if (mapper == 47) {
write_prg_byte(0x6000 + (i >> 4), 0);
}
if ((mapper == 206) && (prgsize == 1)) {
dumpBankPRG(0x0, 0x8000, base);
} else {
banks = int_pow(2, prgsize) * 2;
write_prg_byte(0xA001, 0x80); // Block Register - PRG RAM Chip Enable, Writable
if (mapper == 126) {
write_prg_byte(0x6000, (i & 0x180) >> 3 | (i & 0x70) >> 4);
write_prg_byte(0x6003, 0x00); // set MMC3 banking mode
}
if (mapper == 134) {
write_prg_byte(0x6001, (i & 0x30) >> 4);
write_prg_byte(0x6000, 0x00); // set MMC3 banking mode
}
if (mapper == 176) {
write_prg_byte(0x5FF1, (i & 0xE0) >> 1);
write_prg_byte(0x5FF3, 0); // extended MMC3 mode: disabled
write_prg_byte(0x5FF0, 1); // 256K outer bank mode
}
if (mapper == 268) {
write_prg_byte(0x5000, ((i & 0x70) >> 4) | ((i & 0xC00) >> 6));
write_prg_byte(0x5001, ((i & 0x80) >> 3) | ((i & 0x300) >> 6) | 0x60);
write_prg_byte(0x5002, 0x00);
write_prg_byte(0x5003, 0x00);
write_prg_byte(0x6000, ((i & 0x70) >> 4) | ((i & 0xC00) >> 6));
write_prg_byte(0x6001, ((i & 0x80) >> 3) | ((i & 0x300) >> 6) | 0x60);
write_prg_byte(0x6002, 0x00);
write_prg_byte(0x6003, 0x00);
for (size_t i = 0; i < banks; i += 1) {
if (mapper == 37) {
if (i == 0) {
write_prg_byte(0x6000, 0); // Switch to Lower Block ($0000-$FFFF)
} else if (i == 8) {
write_prg_byte(0x6000, 3); // Switch to 2nd 64K Block ($10000-$1FFFF)
} else if (i == 16) {
write_prg_byte(0x6000, 4); // Switch to 128K Block ($20000-$3FFFF)
}
}
if (mapper == 47) {
write_prg_byte(0x6000 + (i >> 4), 0);
}
if (mapper == 126) {
write_prg_byte(0x6000, (i & 0x180) >> 3 | (i & 0x70) >> 4);
}
if (mapper == 134) {
write_prg_byte(0x6001, (i & 0x30) >> 4);
}
if (mapper == 176) {
write_prg_byte(0x5FF1, (i & 0xE0) >> 1);
}
if (mapper == 268) {
write_prg_byte(0x5000, ((i & 0x70) >> 4) | ((i & 0xC00) >> 6));
write_prg_byte(0x5001, ((i & 0x80) >> 3) | ((i & 0x300) >> 6) | 0x60);
write_prg_byte(0x5002, 0x00);
write_prg_byte(0x5003, 0x00);
write_prg_byte(0x6000, ((i & 0x70) >> 4) | ((i & 0xC00) >> 6));
write_prg_byte(0x6001, ((i & 0x80) >> 3) | ((i & 0x300) >> 6) | 0x60);
write_prg_byte(0x6002, 0x00);
write_prg_byte(0x6003, 0x00);
}
if (mapper == 315) {
write_prg_byte(0x6800, (i & 30) >> 3);
}
if (mapper == 366) {
write_prg_byte(0x6800 + (i & 0x70), i);
}
write_prg_byte(0x8000, 0x06); // PRG Bank 0 ($8000-$9FFF)
write_prg_byte(0x8001, i);
dumpBankPRG(0x0, 0x2000, base);
}
if (mapper == 315) {
write_prg_byte(0x6800, (i & 30) >> 3);
}
if (mapper == 366) {
write_prg_byte(0x6800 + (i & 0x70), i);
}
write_prg_byte(0x8000, 0x06); // PRG Bank 0 ($8000-$9FFF)
write_prg_byte(0x8001, i);
dumpBankPRG(0x0, 0x2000, base);
}
break;
@ -2153,7 +2157,7 @@ void readPRG(bool readrom) {
banks = int_pow(2, prgsize) * 2;
write_prg_byte(0xD000, 0x02);
for (uint8_t i = 0; i < banks; i++) {
write_prg_byte(0xD003, (((i >> 5) & 0x06) | 0x20));
write_prg_byte(0xD003, ((i >> 5) & 0x06) | 0x20);
write_prg_byte(0x8000, (i & 0x3f));
dumpBankPRG(0x0, 0x2000, base);
}
@ -3165,9 +3169,8 @@ void readCHR(bool readrom) {
case 211:
banks = int_pow(2, chrsize) / 2;
write_prg_byte(0xD000, 0x02);
for (size_t i = 0; i < banks; i++) {
write_prg_byte(0xD003, (((i >> 3) & 0x18) | 0x20));
write_prg_byte(0xD003, ((i >> 3) & 0x18) | 0x20);
write_prg_byte(0x9000, (i & 0x3f));
dumpBankCHR(0x0, 0x2000);
}
@ -3402,7 +3405,7 @@ void readCHR(bool readrom) {
case 87: // 16K/32K
banks = int_pow(2, chrsize) / 2;
for (size_t i = 0; i < banks; i++) { // 16K/32K
write_prg_byte(0x6000, (((i & 0x1) << 1) | ((i & 0x2) >> 1)));
write_prg_byte(0x6000, ((i & 0x1) << 1) | ((i & 0x2) >> 1));
dumpBankCHR(0x0, 0x2000);
}
break;