Mirrors/cartreader
2
0
Fork 0
mirror of https://github.com/sanni/cartreader.git synced 2025-01-12 21:19:06 +01:00
Code Issues Projects Releases Wiki Activity

Add Realtec Mapper to MD.ino thx to skaman

Browse Source
This commit is contained in:
sanni 2019-09-29 12:33:02 +02:00
parent f3802eb340
commit ee730623fc
1 changed files with 90 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

91
Cart_Reader/MD.ino
View File

@ -82,6 +82,9 @@ word eepdata;
// CD BACKUP RAM
unsigned long bramSize = 0;
// REALTEC MAPPER
boolean realtec = 0;
/******************************************
Menu
*****************************************/
@ -201,7 +204,10 @@ void mdCartMenu() {
if (cartSize != 0 && cartSize <= 16777216) {
// Change working dir to root
sd.chdir("/");
readROM_MD();
if (realtec)
readRealtec_MD();
else
readROM_MD();
//compare_checksum_MD();
}
else {
@ -681,6 +687,15 @@ void getCartInfo_MD() {
}
}
// Realtec Mapper Check
word realtecCheck1 = readWord_MD(0x3F080); // 0x7E100 "SEGA" (BootROM starts at 0x7E000)
word realtecCheck2 = readWord_MD(0x3F081);
if ((realtecCheck1 == 0x5345) && (realtecCheck2 == 0x4741)) {
realtec = 1;
strcpy(romName, "Realtec");
cartSize = 0x80000;
}
display_Clear();
println_Msg(F("Cart Info"));
println_Msg(F(" "));
@ -1904,6 +1919,80 @@ void writeBram_MD() {
dataIn_MD();
}
//******************************************
// Realtec Mapper Functions
//******************************************
void writeRealtec(unsigned long address, byte value) { // Realtec 0x404000 (UPPER)/0x400000 (LOWER)
dataOut_MD();
PORTF = address & 0xFF; // 0x00 ADDR A0-A7
PORTK = (address >> 8) & 0xFF; // ADDR A8-A15
PORTL = (address >> 16) & 0xFF; //0x20 ADDR A16-A23
PORTA = 0x00; // DATA D8-D15
PORTH |= (1 << 0); // /RES HIGH
PORTH |= (1 << 3); // CE HIGH
PORTC = value;
PORTH &= ~(1 << 4) & ~(1 << 5); // /UDSW + /LDSW LOW
PORTH |= (1 << 4) | (1 << 5); // /UDSW + /LDSW HIGH
dataIn_MD();
}
void readRealtec_MD() {
// Set control
dataIn_MD();
// Get name, add extension and convert to char array for sd lib
strcpy(fileName, romName);
strcat(fileName, ".MD");
// create a new folder
EEPROM_readAnything(10, foldern);
sprintf(folder, "MD/ROM/%s/%d", romName, foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
display_Clear();
print_Msg(F("Saving to "));
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
// write new folder number back to eeprom
foldern = foldern + 1;
EEPROM_writeAnything(10, foldern);
// Open file on sd card
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
print_Error(F("SD Error"), true);
}
// Realtec Registers
writeWord_MD(0x201000, 4); // Number of 128K Blocks 0x402000 (0x201000)
writeRealtec(0x200000, 1); // ROM Lower Address 0x400000 (0x200000)
writeRealtec(0x202000, 0); // ROM Upper Address 0x404000 (0x202000)
word d = 0;
for (unsigned long currBuffer = 0; currBuffer < cartSize / 2; currBuffer += 256) {
// Blink led
if (currBuffer % 16384 == 0)
PORTB ^= (1 << 4);
for (int currWord = 0; currWord < 256; currWord++) {
word myWord = readWord_MD(currBuffer + currWord);
// Split word into two bytes
// Left
sdBuffer[d] = (( myWord >> 8 ) & 0xFF);
// Right
sdBuffer[d + 1] = (myWord & 0xFF);
d += 2;
}
myFile.write(sdBuffer, 512);
d = 0;
}
// Close the file:
myFile.close();
}
//******************************************
// End of File
//******************************************