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remove duplicate code for F4,F6 & F8 mapper

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This commit is contained in:
smesgr9000 2024-05-07 20:30:02 +02:00
parent 53b71f9108
commit 8bd6d7dfdc
1 changed files with 30 additions and 53 deletions
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83
Cart_Reader/2600.ino
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@ -181,7 +181,7 @@ void readDataArray_2600(uint16_t addr, uint16_t size) {
void readSegmentF8_2600(uint16_t startaddr, uint16_t endaddr, uint16_t bankaddr) {
for (uint16_t addr = startaddr; addr < endaddr; addr += 512) {
for (int w = 0; w < 512; w++) {
for (uint16_t w = 0; w < 512; w++) {
if (addr > 0x1FF9) // SET BANK ADDRESS FOR 0x1FFA-0x1FFF
readData_2600(bankaddr);
uint8_t temp = readData_2600(addr + w);
@ -191,6 +191,25 @@ void readSegmentF8_2600(uint16_t startaddr, uint16_t endaddr, uint16_t bankaddr)
}
}
void readSegmentE7_2600(uint8_t start, uint8_t end) {
for (uint8_t x = start; x <= end; x++) {
readData_2600(0x1FE0 + x);
readSegment_2600(0x1000, 0x1800);
}
}
void readSegmentFx_2600(bool hasRAM, uint16_t size) {
if(hasRAM) {
outputFF_2600(0x100); // Skip 0x1000-0x10FF RAM
readDataArray_2600(0x1100, 0x100);
} else {
readSegment_2600(0x1000, 0x1200);
}
readSegment_2600(0x1200, 0x1E00);
// Split Read of Last 0x200 bytes
readDataArray_2600(0x1E00, size);
}
void outputFF_2600(uint16_t size) {
memset(sdBuffer, 0xFF, size * sizeof(sdBuffer[0]));
myFile.write(sdBuffer, size);
@ -261,14 +280,11 @@ void writeData3F_2600(uint16_t addr, uint8_t data) {
}
// E7 Mapper Check - Check Bank for FFs
boolean checkE7(int bank) {
boolean checkE7(uint16_t bank) {
writeData_2600(0x1800, 0xFF);
readData_2600(0x1FE0 + bank);
uint32_t testdata = (readData_2600(0x1000) << 24) | (readData_2600(0x1001) << 16) | (readData_2600(0x1002) << 8) | (readData_2600(0x1003));
if (testdata == 0xFFFFFFFF)
return true;
else
return false;
return (testdata == 0xFFFFFFFF);
}
void readROM_2600() {
@ -384,33 +400,18 @@ void readROM_2600() {
break;
case 0xE7: // E7 Mapper 8KB/12KB/16KB
writeData_2600(0x1800, 0xFF);
// Check Bank 0 - If 0xFFs then Bump 'n' Jump
if (checkE7(0)) { // Bump 'n' Jump 8K
writeData_2600(0x1800, 0xFF);
for (int x = 4; x < 7; x++) { // Banks 4-6
readData_2600(0x1FE0 + x);
readSegment_2600(0x1000, 0x1800);
}
readSegmentE7_2600(4, 6); // Banks 4-6
}
// Check Bank 3 - If 0xFFs then BurgerTime
else if (checkE7(3)) { // BurgerTime 12K
writeData_2600(0x1800, 0xFF);
for (int x = 0; x < 2; x++) { // Banks 0+1
readData_2600(0x1FE0 + x);
readSegment_2600(0x1000, 0x1800);
}
for (int x = 4; x < 7; x++) { // Banks 4-6
readData_2600(0x1FE0 + x);
readSegment_2600(0x1000, 0x1800);
}
readSegmentE7_2600(0, 1); // Banks 0+1
readSegmentE7_2600(4, 6); // Banks 4-6
}
else { // Masters of the Universe (or Unknown Cart) 16K
writeData_2600(0x1800, 0xFF);
for (int x = 0; x < 7; x++) { // Banks 0-6
readData_2600(0x1FE0 + x);
readSegment_2600(0x1000, 0x1800);
}
readSegmentE7_2600(0, 6); // Banks 0-6
}
readSegment_2600(0x1800, 0x2000); // Bank 7
break;
@ -426,15 +427,7 @@ void readROM_2600() {
case 0xF4: // F4 Mapper 32KB
for (int x = 0; x < 8; x++) {
readData_2600(0x1FF4 + x);
if(a2600mapper == 0xF4) {
readSegment_2600(0x1000, 0x1200);
} else {
outputFF_2600(0x100); // Skip 0x1000-0x10FF RAM
readDataArray_2600(0x1100, 0x100);
}
readSegment_2600(0x1200, 0x1E00);
// Split Read of Last 0x200 bytes
readDataArray_2600(0x1E00, 0x1F4);
readSegmentFx_2600(a2600mapper == 0x04, 0x1F4);
for (int z = 0; z < 12; z++) {
// Set Bank to ensure 0x1FFC-0x1FFF is correct
readData_2600(0x1FF4 + x);
@ -448,15 +441,7 @@ void readROM_2600() {
case 0xF6: // F6 Mapper 16KB
for (int w = 0; w < 4; w++) {
readData_2600(0x1FF6 + w);
if(a2600mapper == 0xF6) {
readSegment_2600(0x1000, 0x1200);
} else {
outputFF_2600(0x100); // Skip 0x1000-0x10FF RAM
readDataArray_2600(0x1100, 0x100);
}
readSegment_2600(0x1200, 0x1E00);
// Split Read of Last 0x200 bytes
readDataArray_2600(0x1E00, 0x1F6);
readSegmentFx_2600(a2600mapper == 0x06, 0x1F6);
// Bank Registers 0x1FF6-0x1FF9
for (int y = 0; y < 4; y++){
readData_2600(0x1FFF); // Reset Bank
@ -477,15 +462,7 @@ void readROM_2600() {
case 0xF8: // F8 Mapper 8KB
for (int w = 0; w < 2; w++) {
readData_2600(0x1FF8 + w);
if(a2600mapper == 0xF8) {
readSegment_2600(0x1000, 0x1200);
} else {
outputFF_2600(0x100); // Skip 0x1000-0x10FF RAM
readDataArray_2600(0x1100, 0x100);
}
readSegment_2600(0x1200, 0x1E00);
// Split Read of Last 0x200 bytes
readDataArray_2600(0x1E00, 0x1F8);
readSegmentFx_2600(a2600mapper == 0x08, 0x1F8);
// Bank Registers 0x1FF8-0x1FF9
for (int y = 0; y < 2; y++){
readData_2600(0x1FFF); // Reset Bank