Mirrors/cartreader
2
0
Fork 0
mirror of https://github.com/sanni/cartreader.git synced 2024-06-13 07:48:50 +02:00
Code Issues Projects Releases Wiki Activity

E7/F4/F6/F8 mapper changes and new mapper for Time Pilot (thx to skaman)

Browse Source
This commit is contained in:
sanni 2023-07-18 22:54:28 +02:00 committed by GitHub
parent f2a33e264f
commit b4d6b4e637
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 154 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

184
Cart_Reader/ATARI.ino
View File

@ -34,10 +34,10 @@ static const byte PROGMEM atarimapsize[] = {
0xF8, 2, // Atari 8K
0xFA, 3, // CBS RAM Plus 12K
0xFE, 2, // Activision 8K
0xF9, 2, // "TP" Time Pilot 8K
0x0A, 2, // "UA" UA Ltd 8K
};
//byte atarimapcount = 14;
byte atarimapcount = (sizeof(atarimapsize) / sizeof(atarimapsize[0])) / 2;
byte atarimapselect;
@ -47,6 +47,7 @@ byte ATARI[] = { 2, 4, 8, 12, 16, 32, 64 };
byte atarimapper = 0;
byte newatarimapper;
byte atarisize;
byte e7size;
// EEPROM MAPPING
// 07 MAPPER
@ -253,6 +254,17 @@ void writeData3F_ATARI(uint16_t addr, uint8_t data) {
DDRC = 0x00; // Reset to Input
}
// E7 Mapper Check - Check Bank for FFs
boolean checkE7(int bank) {
writeData_ATARI(0x1800, 0xFF);
readData_ATARI(0x1FE0 + bank);
uint32_t testdata = (readData_ATARI(0x1000) << 24) | (readData_ATARI(0x1001) << 16) | (readData_ATARI(0x1002) << 8) | (readData_ATARI(0x1003));
if (testdata == 0xFFFFFFFF)
return true;
else
return false;
}
void readROM_ATARI() {
strcpy(fileName, romName);
strcat(fileName, ".a26");
@ -372,13 +384,39 @@ void readROM_ATARI() {
readSegment_ATARI(0x1C00, 0x2000);
break;
case 0xE7: // E7 Mapper 16KB
writeData_ATARI(0x1800, 0xFF);
for (int x = 0; x < 0x7; x++) {
readData_ATARI(0x1FE0 + x);
readSegment_ATARI(0x1000, 0x1800);
case 0xE7: // E7 Mapper 8KB/12KB/16KB
// Check Bank 0 - If 0xFFs then Bump 'n' Jump
if (checkE7(0)) { // Bump 'n' Jump 8K
writeData_ATARI(0x1800, 0xFF);
for (int x = 4; x < 7; x++) { // Banks 4-6
readData_ATARI(0x1FE0 + x);
readSegment_ATARI(0x1000, 0x1800);
}
e7size = 0;
}
readSegment_ATARI(0x1800, 0x2000);
// Check Bank 3 - If 0xFFs then BurgerTime
else if (checkE7(3)) { // BurgerTime 12K
writeData_ATARI(0x1800, 0xFF);
for (int x = 0; x < 2; x++) { // Banks 0+1
readData_ATARI(0x1FE0 + x);
readSegment_ATARI(0x1000, 0x1800);
}
for (int x = 4; x < 7; x++) { // Banks 4-6
readData_ATARI(0x1FE0 + x);
readSegment_ATARI(0x1000, 0x1800);
}
e7size = 1;
}
else { // Masters of the Universe (or Unknown Cart) 16K
writeData_ATARI(0x1800, 0xFF);
for (int x = 0; x < 7; x++) { // Banks 0-6
readData_ATARI(0x1FE0 + x);
readSegment_ATARI(0x1000, 0x1800);
}
e7size = 2;
}
readSegment_ATARI(0x1800, 0x2000); // Bank 7
break;
case 0xF0: // F0 Mapper 64KB
@ -388,36 +426,100 @@ void readROM_ATARI() {
}
break;
case 0xF4: // F4 Mapper 32KB
for (int x = 0; x < 0x8; x++) {
case 0xF4: // F4 Mapper 32KB
for (int x = 0; x < 8; x++) {
readData_ATARI(0x1FF4 + x);
readSegment_ATARI(0x1000, 0x2000);
}
break;
case 0xF6: // F6 Mapper 16KB
for (int x = 0; x < 0x4; x++) {
readData_ATARI(0x1FF6 + x);
readSegment_ATARI(0x1000, 0x2000);
}
break;
case 0xF8: // F8 Mapper 8KB
for (int x = 0; x < 0x2; x++) {
readData_ATARI(0x1FF8 + x);
readSegment_ATARI(0x1000, 0x1E00);
// Split Read of Last 0x200 bytes
for (int y = 0; y < 0x1F8; y++) {
for (int y = 0; y < 0x1F4; y++) {
sdBuffer[y] = readData_ATARI(0x1E00 + y);
}
myFile.write(sdBuffer, 500);
for (int z = 0; z < 12; z++) {
// Set Bank to ensure 0x1FFC-0x1FFF is correct
readData_ATARI(0x1FF4 + x);
sdBuffer[z] = readData_ATARI(0x1FF4 + z);
}
myFile.write(sdBuffer, 12);
}
break;
case 0xF6: // F6 Mapper 16KB
for (int w = 0; w < 4; w++) {
readData_ATARI(0x1FF6 + w);
readSegment_ATARI(0x1000, 0x1E00);
// Split Read of Last 0x200 bytes
for (int x = 0; x < 0x1F6; x++) {
sdBuffer[x] = readData_ATARI(0x1E00 + x);
}
myFile.write(sdBuffer, 502);
// Bank Registers 0x1FF6-0x1FF9
for (int y = 0; y < 4; y++){
readData_ATARI(0x1FFF); // Reset Bank
sdBuffer[y] = readData_ATARI(0x1FF6 + y);
}
// End of Bank 0x1FFA-0x1FFF
readData_ATARI(0x1FFF); // Reset Bank
readData_ATARI(0x1FF6 + w); // Set Bank
for (int z = 4; z < 10; z++) {
sdBuffer[z] = readData_ATARI(0x1FF6 + z); // 0x1FFA-0x1FFF
}
myFile.write(sdBuffer, 10);
}
readData_ATARI(0x1FFF); // Reset Bank
break;
case 0xF8: // F8 Mapper 8KB
for (int w = 0; w < 2; w++) {
readData_ATARI(0x1FF8 + w);
readSegment_ATARI(0x1000, 0x1E00);
// Split Read of Last 0x200 bytes
for (int x = 0; x < 0x1F8; x++) {
sdBuffer[x] = readData_ATARI(0x1E00 + x);
}
myFile.write(sdBuffer, 504);
for (int z = 0; z < 8; z++) {
// Set Bank to ensure 0x1FFA-0x1FFF is correct
readData_ATARI(0x1FF8 + x);
sdBuffer[z] = readData_ATARI(0x1FF8 + z);
// Bank Registers 0x1FF8-0x1FF9
for (int y = 0; y < 2; y++){
readData_ATARI(0x1FFF); // Reset Bank
sdBuffer[y] = readData_ATARI(0x1FF8 + y);
}
// End of Bank 0x1FFA-0x1FFF
readData_ATARI(0x1FFF); // Reset Bank
readData_ATARI(0x1FF8 + w); // Set Bank
for (int z = 2; z < 8; z++) {
sdBuffer[z] = readData_ATARI(0x1FF8 + z); // 0x1FFA-0x1FFF
}
myFile.write(sdBuffer, 8);
}
readData_ATARI(0x1FFF); // Reset Bank
break;
case 0xF9: // Time Pilot Mapper 8KB
// Bad implementation of the F8 Mapper
// kevtris swapped the bank order - swapped banks may not match physical ROM data
// Bankswitch code uses 0x1FFC and 0x1FF9
for (int w = 3; w >= 0; w -= 3) {
readData_ATARI(0x1FF9 + w);
readSegment_ATARI(0x1000, 0x1E00);
// Split Read of Last 0x200 bytes
for (int x = 0; x < 0x1F9; x++) {
sdBuffer[x] = readData_ATARI(0x1E00 + x);
}
myFile.write(sdBuffer, 505);
readData_ATARI(0x1FFF); // Reset Bank
sdBuffer[0] = readData_ATARI(0x1FF9);
// End of Bank 0x1FFA-0x1FFF
readData_ATARI(0x1FFF); // Reset Bank
readData_ATARI(0x1FF9 + w); // Set Bank
for (int z = 1; z < 7; z++) {
sdBuffer[z] = readData_ATARI(0x1FF9 + z); // 0x1FFA-0x1FFF
}
myFile.write(sdBuffer, 7);
}
// Reset Bank
readData_ATARI(0x1FF9);
readData_ATARI(0x1FFF);
readData_ATARI(0x1FFC);
break;
case 0xFA: // FA Mapper 12KB
@ -456,6 +558,13 @@ void readROM_ATARI() {
myFile.close();
unsigned long crcsize = ATARI[atarisize] * 0x400;
// Correct E7 Size for 8K/12K ROMs
if (atarimapper == 0xE7) {
if (e7size == 0)
crcsize = ATARI[atarisize] * 0x200;
else if (e7size == 1)
crcsize = ATARI[atarisize] * 0x300;
}
calcCRC(fileName, crcsize, NULL, 0);
println_Msg(F(""));
@ -492,6 +601,8 @@ void checkStatus_ATARI() {
println_Msg(F("CV"));
else if (atarimapper == 0xD0)
println_Msg(F("DPC"));
else if (atarimapper == 0xF9)
println_Msg(F("TP"));
else
println_Msg(atarimapper, HEX);
print_Msg(F("ROM SIZE: "));
@ -514,6 +625,8 @@ void checkStatus_ATARI() {
Serial.println(F("CV"));
else if (atarimapper == 0xD0)
Serial.println(F("DPC"));
else if (atarimapper == 0xF9)
Serial.println(F("TP"));
else
Serial.println(atarimapper, HEX);
Serial.print(F("ROM SIZE: "));
@ -570,6 +683,8 @@ void setMapper_ATARI() {
println_Msg(F("CV"));
else if (atarimapselect == 0xD0)
println_Msg(F("DPC"));
else if (atarimapselect == 0xF9)
println_Msg(F("TP"));
else
println_Msg(atarimapselect, HEX);
display_Update();
@ -595,6 +710,8 @@ void setMapper_ATARI() {
println_Msg(F("CV"));
else if (atarimapselect == 0xD0)
println_Msg(F("DPC"));
else if (atarimapselect == 0xF9)
println_Msg(F("TP"));
else
println_Msg(atarimapselect, HEX);
println_Msg(F(""));
@ -630,6 +747,8 @@ void setMapper_ATARI() {
println_Msg(F("CV"));
else if (atarimapselect == 0xD0)
println_Msg(F("DPC"));
else if (atarimapselect == 0xF9)
println_Msg(F("TP"));
else
println_Msg(atarimapselect, HEX);
println_Msg(F(""));
@ -663,6 +782,8 @@ void setMapper_ATARI() {
println_Msg(F("CV"));
else if (atarimapselect == 0xD0)
println_Msg(F("DPC"));
else if (atarimapselect == 0xF9)
println_Msg(F("TP"));
else
println_Msg(atarimapselect, HEX);
println_Msg(F(""));
@ -692,6 +813,8 @@ void setMapper_ATARI() {
print_Msg(F("CV"));
else if (newatarimapper == 0xD0)
println_Msg(F("DPC"));
else if (newatarimapper == 0xF9)
println_Msg(F("TP"));
else
print_Msg(newatarimapper, HEX);
println_Msg(F(" SELECTED"));
@ -714,8 +837,9 @@ setmapper:
Serial.println(F("10 = F8 [Atari 8K]"));
Serial.println(F("11 = FA [CBS RAM Plus]"));
Serial.println(F("12 = FE [Activision]"));
Serial.println(F("13 = UA [UA Ltd]"));
Serial.print(F("Enter Mapper [0-13]: "));
Serial.println(F("13 = TP [Time Pilot 8K]"));
Serial.println(F("14 = UA [UA Ltd]"));
Serial.print(F("Enter Mapper [0-14]: "));
while (Serial.available() == 0) {}
newmap = Serial.readStringUntil('\n');
Serial.println(newmap);