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https://github.com/sanni/cartreader.git
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[WIP] solving mappers with bus conflicts
solving mappers with bus conflicts, mapper 2 is fixed, more to come after more testing
This commit is contained in:
nsx0r
GitHub
parent
93fba20d62
commit
95e795023d
@ -2497,6 +2497,7 @@ void readPRG(boolean readrom) {
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}
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word base = 0x8000;
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bool busConflict = false;
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if (myFile) {
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switch (mapper) {
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@ -2531,13 +2532,27 @@ void readPRG(boolean readrom) {
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}
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break;
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case 2: // 128K/256K
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for (int i = 0; i < 8; i++) { // 128K/256K
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write_prg_byte(0x8000, i);
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for (word address = 0x0; address < (((word)prgsize - 3) * 0x4000) + 0x4000; address += 512) {
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case 2: // bus conflicts - fixed last bank
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banks = int_pow(2, prgsize);
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busConflict = true;
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for (int i = 0; i < banks-1; i++) {
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for (int x = 0; x < 0x4000; x++) {
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if (read_prg_byte(0xC000 + x) == i) {
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write_prg_byte(0xC000 + x, i);
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busConflict = false;
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break;
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}
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}
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if (busConflict) {
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write_prg_byte(0x8000 + i, i);
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}
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for (word address = 0x0; address < 0x4000; address += 512) {
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dumpPRG(base, address);
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}
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}
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for (word address = 0x4000; address < 0x8000; address += 512) {
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dumpPRG(base, address);
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}
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break;
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case 4:
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@ -2863,7 +2878,7 @@ void readPRG(boolean readrom) {
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banks = int_pow(2, prgsize) / 2; // 32k banks
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for (int i = 0; i < banks; i++) {
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write_prg_byte(0x6000, (i & 0x1E) >> 1); // high bits
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write_prg_byte(0x8000, i & 0x01); // low bit
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write_prg_byte(0x8000, i & 0x01); // low bit
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for (word address = 0x0; address < 0x8000; address += 512) {
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dumpPRG(base, address);
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}
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@ -3255,7 +3270,7 @@ void readPRG(boolean readrom) {
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dumpPRG(base, address);
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}
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}
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for (word address = 0x4000; address < 0x8000; address += 512) { // last 16k bank fixed at $C000-$FFFF
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for (word address = 0x4000; address < 0x8000; address += 512) { // last 16k bank fixed at $C000-$FFFF
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dumpPRG(base, address);
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}
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break;
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@ -3315,10 +3330,10 @@ void readPRG(boolean readrom) {
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case 178:
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banks = int_pow(2, prgsize);
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write_prg_byte(0x4800, 0); // NROM-256 mode
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write_prg_byte(0x4803, 0); // set PRG-RAM
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write_prg_byte(0x4803, 0); // set PRG-RAM
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for (int i = 0; i < banks; i += 2) {
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write_prg_byte(0x4802, i >> 3); // high PRG (up to 8 bits?!)
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write_prg_byte(0x4801, i & 0x07); // low PRG (3 bits)
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write_prg_byte(0x4801, i & 0x07); // low PRG (3 bits)
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for (word address = 0x0; address < 0x8000; address += 512) {
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dumpPRG(base, address);
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}
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@ -3863,7 +3878,7 @@ void readCHR(boolean readrom) {
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}
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break;
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case 42:
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case 42:
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banks = int_pow(2, chrsize);
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for (int i = 0; i < banks; i++) {
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write_prg_byte(0x8000, i & 0x0F);
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@ -3902,11 +3917,11 @@ void readCHR(boolean readrom) {
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}
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break;
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case 46:
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case 46:
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banks = int_pow(2, chrsize); // 8k banks
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for (int i = 0; i < banks; i++) {
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write_prg_byte(0x6000, (i & 0x78) << 1); // high bits
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write_prg_byte(0x8000, (i & 0x07) << 4); // low bits
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write_prg_byte(0x8000, (i & 0x07) << 4); // low bits
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for (word address = 0x0; address < 0x2000; address += 512) {
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dumpCHR(address);
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}
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@ -3915,7 +3930,7 @@ void readCHR(boolean readrom) {
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case 52:
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banks = int_pow(2, chrsize);
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write_prg_byte(0xA001, 0x80); // enable WRAM write
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write_prg_byte(0xA001, 0x80); // enable WRAM write
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for (int i = 0; i < banks; i++) {
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write_prg_byte(0x6000, (i & 0x04) << 2 | (i & 0x03) << 4 | 0x40);
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for (word address = 0x0; address < 0x1000; address += 512) {
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@ -3935,7 +3950,7 @@ void readCHR(boolean readrom) {
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}
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break;
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case 59:
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case 59:
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banks = int_pow(2, chrsize) / 2;
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for (int i = 0; i < banks; i++) {
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write_prg_byte(0x8000 + (i & 0x07), 0);
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@ -4186,7 +4201,7 @@ void readCHR(boolean readrom) {
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}
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break;
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case 113:
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case 113:
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banks = int_pow(2, chrsize) / 2;
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for (int i = 0; i < banks; i++) {
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write_prg_byte(0x4100, (i & 0x08) << 3 | (i & 0x07));
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@ -4196,7 +4211,7 @@ void readCHR(boolean readrom) {
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}
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break;
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case 126:
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case 126:
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banks = int_pow(2, chrsize) * 2;
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write_prg_byte(0xA001, 0x80); // enable WRAM
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write_prg_byte(0x6003, 0x00); // set MMC3 banking mode
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@ -4212,20 +4227,20 @@ void readCHR(boolean readrom) {
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}
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break;
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case 134:
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banks = int_pow(2, chrsize) * 2;
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write_prg_byte(0x6000, 0x00); // set MMC3 banking mode
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for (int i = 0; i < banks; i += 2) {
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write_prg_byte(0x6001, (i & 0x180) >> 3); // select outer bank
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write_prg_byte(0x8000, 0); // 2k bank 0 at $0000
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write_prg_byte(0x8001, i);
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write_prg_byte(0x8000, 1); // 2k bank 1 at $0800
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write_prg_byte(0x8001, i + 2);
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for (word address = 0x0; address < 0x1000; address += 512) {
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dumpCHR(address);
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}
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case 134:
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banks = int_pow(2, chrsize) * 2;
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write_prg_byte(0x6000, 0x00); // set MMC3 banking mode
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for (int i = 0; i < banks; i += 2) {
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write_prg_byte(0x6001, (i & 0x180) >> 3); // select outer bank
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write_prg_byte(0x8000, 0); // 2k bank 0 at $0000
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write_prg_byte(0x8001, i);
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write_prg_byte(0x8000, 1); // 2k bank 1 at $0800
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write_prg_byte(0x8001, i + 2);
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for (word address = 0x0; address < 0x1000; address += 512) {
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dumpCHR(address);
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}
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break;
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}
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break;
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case 140: // 32K/128K
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banks = int_pow(2, chrsize) / 2;
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@ -4237,7 +4252,7 @@ void readCHR(boolean readrom) {
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}
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break;
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case 174: // 64k
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case 174: // 64k
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for (int i = 0; i < 8; i++) {
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write_prg_byte(0xFF00 + (i << 1), 0);
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for (word address = 0x0; address < 0x2000; address += 512) {
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@ -4284,7 +4299,7 @@ void readCHR(boolean readrom) {
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}
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break;
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case 185: // 8K [READ 32K TO OVERRIDE LOCKOUT]
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case 185: // 8K [READ 32K TO OVERRIDE LOCKOUT]
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for (int i = 0; i < 4; i++) { // Read 32K to locate valid 8K
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write_prg_byte(0x8000, i);
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byte chrcheck = read_chr_byte(0);
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@ -4356,7 +4371,7 @@ void readCHR(boolean readrom) {
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}
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break;
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case 212:
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case 212:
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banks = int_pow(2, chrsize) / 2;
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for (int i = 0; i < banks; i++) {
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write_prg_byte(0x8000 + (i & 0x07), 0);
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