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cartreader/Cart_Reader/GB.ino
sanni 34e2ef2bae #define ENABLE_FLASH now enables/disables all repro flash code 
This cuts down memory usage from 90%/66% to 68%/63%. Useful for people that don't flash repros and would like to enable more systems instead.
2024-08-16 11:43:08 +02:00

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//******************************************
// GAME BOY MODULE
//******************************************
#ifdef ENABLE_GBX
/******************************************
Variables
*****************************************/
// Game Boy
word sramBanks;
word romBanks;
word lastByte = 0;
boolean audioWE = 0;
/******************************************
Menu
*****************************************/
// GBx start menu
static const char gbxMenuItem1[] PROGMEM = "Game Boy (Color)";
static const char gbxMenuItem2[] PROGMEM = "GB Advance (3V)";
static const char gbxMenuItem3[] PROGMEM = "Flash Repro";
static const char gbxMenuItem4[] PROGMEM = "NPower GB Memory";
static const char gbxMenuItem5[] PROGMEM = "Flash Codebreaker";
static const char gbxMenuItem6[] PROGMEM = "Flash Datel Device";
static const char* const menuOptionsGBx[] PROGMEM = { gbxMenuItem1, gbxMenuItem2, gbxMenuItem3, gbxMenuItem4, gbxMenuItem5, gbxMenuItem6, FSTRING_RESET };
// GB menu items
static const char* const menuOptionsGB[] PROGMEM = { FSTRING_READ_ROM, FSTRING_READ_SAVE, FSTRING_WRITE_SAVE, FSTRING_RESET };
#if defined(ENABLE_FLASH)
// GB Flash items
static const char GBFlashItem1[] PROGMEM = "GB 29F Repro";
static const char GBFlashItem2[] PROGMEM = "GB CFI Repro";
static const char GBFlashItem3[] PROGMEM = "GB CFI and Save";
static const char GBFlashItem4[] PROGMEM = "GB Smart";
static const char GBFlashItem5[] PROGMEM = "GBA Repro (3V)";
static const char GBFlashItem6[] PROGMEM = "GBA 369-in-1 (3V)";
static const char* const menuOptionsGBFlash[] PROGMEM = { GBFlashItem1, GBFlashItem2, GBFlashItem3, GBFlashItem4, GBFlashItem5, GBFlashItem6, FSTRING_RESET };
// 29F Flash items
static const char GBFlash29Item1[] PROGMEM = "DIY MBC3 (WR)";
static const char GBFlash29Item2[] PROGMEM = "DIY MBC5 (WR)";
static const char GBFlash29Item3[] PROGMEM = "HDR MBC30 (Audio)";
static const char GBFlash29Item4[] PROGMEM = "HDR GameBoy Cam";
static const char* const menuOptionsGBFlash29[] PROGMEM = { GBFlash29Item1, GBFlash29Item2, GBFlash29Item3, GBFlash29Item4, FSTRING_RESET };
#endif
// Pelican Codebreaker, Brainboy, and Monster Brain Operation Menu
static const char PelicanRead[] PROGMEM = "Read Device";
static const char PelicanWrite[] PROGMEM = "Write Device";
static const char* const menuOptionsGBPelican[] PROGMEM = { PelicanRead, PelicanWrite };
// Datel Device Operation Menu
static const char MegaMemRead[] PROGMEM = "Read Mega Memory";
static const char MegaMemWrite[] PROGMEM = "Write Mega Memory";
static const char GameSharkRead[] PROGMEM = "Read GBC GameShark";
static const char GameSharkWrite[] PROGMEM = "Write GBC GameShark";
static const char* const menuOptionsGBDatel[] PROGMEM = { MegaMemRead, MegaMemWrite, GameSharkRead, GameSharkWrite };
#if defined(ENABLE_FLASH)
bool gbxFlashCFI() {
// Flash CFI
display_Clear();
display_Update();
setup_GB();
mode = CORE_GB;
// Change working dir to root
sd.chdir("/");
// Launch filebrowser
filePath[0] = '\0';
sd.chdir("/");
fileBrowser(FS(FSTRING_SELECT_FILE));
display_Clear();
identifyCFI_GB();
if (!writeCFI_GB()) {
display_Clear();
println_Msg(F("Flashing failed, time out!"));
// Prints string out of the common strings array either with or without newline
print_STR(press_button_STR, 1);
display_Update();
return false;
}
return true;
}
#endif
void feedbackPressAndReset() {
// Prints string out of the common strings array either with or without newline
print_STR(press_button_STR, 1);
display_Update();
wait();
resetArduino();
}
// Start menu for both GB and GBA
void gbxMenu() {
// create menu with title and 5 options to choose from
unsigned char gbType;
// Copy menuOptions out of progmem
convertPgm(menuOptionsGBx, 7);
gbType = question_box(F("Select Game Boy"), menuOptions, 7, 0);
// wait for user choice to come back from the question box menu
switch (gbType) {
case 0:
display_Clear();
display_Update();
setup_GB();
mode = CORE_GB;
break;
case 1:
display_Clear();
display_Update();
setup_GBA();
mode = CORE_GBA;
break;
#if defined(ENABLE_FLASH)
case 2:
// create submenu with title and 7 options to choose from
unsigned char gbFlash;
// Copy menuOptions out of progmem
convertPgm(menuOptionsGBFlash, 7);
gbFlash = question_box(F("Select type"), menuOptions, 7, 0);
// wait for user choice to come back from the question box menu
switch (gbFlash) {
case 0:
//29F Menu
// create submenu with title and 5 options to choose from
unsigned char gbFlash29;
// Copy menuOptions out of progmem
convertPgm(menuOptionsGBFlash29, 5);
gbFlash29 = question_box(F("Select MBC"), menuOptions, 5, 0);
// wait for user choice to come back from the question box menu
switch (gbFlash29) {
case 0:
//Flash MBC3
display_Clear();
display_Update();
setup_GB();
mode = CORE_GB;
// Change working dir to root
sd.chdir("/");
//MBC3
writeFlash29F_GB(3, 1);
feedbackPressAndReset();
break;
case 1:
//Flash MBC5
display_Clear();
display_Update();
setup_GB();
mode = CORE_GB;
// Change working dir to root
sd.chdir("/");
//MBC5
writeFlash29F_GB(5, 1);
feedbackPressAndReset();
break;
case 2:
//Also pulse Audio-In during writes
display_Clear();
display_Update();
setup_GB();
mode = CORE_GB;
//Setup Audio-In(PH4) as Output
DDRH |= (1 << 4);
// Output a high signal on Audio-In(PH4)
PORTH |= (1 << 4);
//Tell writeByte_GB function to pulse Audio-In too
audioWE = 1;
// Change working dir to root
sd.chdir("/");
//MBC5
writeFlash29F_GB(3, 1);
feedbackPressAndReset();
break;
case 3:
//Flash GB Camera
display_Clear();
display_Update();
setup_GB();
mode = CORE_GB;
//Flash first bank with erase
// Change working dir to root
sd.chdir("/");
//MBC3
writeFlash29F_GB(3, 1);
// Prints string out of the common strings array either with or without newline
print_STR(press_button_STR, 1);
display_Update();
wait();
display_Clear();
println_Msg(F("Please change the"));
println_Msg(F("switch on the cart"));
println_Msg(F("to B2 (Bank 2)"));
println_Msg(F("if you want to flash"));
println_Msg(F("a second game"));
println_Msg(FS(FSTRING_EMPTY));
// Prints string out of the common strings array either with or without newline
print_STR(press_button_STR, 1);
display_Update();
wait();
// Flash second bank without erase
// Change working dir to root
sd.chdir("/");
//MBC3
writeFlash29F_GB(3, 0);
// Reset
println_Msg(FS(FSTRING_EMPTY));
feedbackPressAndReset();
break;
case 4:
resetArduino();
break;
}
break;
case 1:
// Flash CFI
gbxFlashCFI();
wait();
resetArduino();
break;
case 2:
// Flash CFI and save
if (!gbxFlashCFI()) {
wait();
resetArduino();
}
getCartInfo_GB();
// Does cartridge have SRAM
if (lastByte > 0) {
// Remove file name ending
int pos = -1;
while (fileName[++pos] != '\0') {
if (fileName[pos] == '.') {
fileName[pos] = '\0';
break;
}
}
sprintf(filePath, "/GB/SAVE/%s/", fileName);
bool saveFound = false;
if (sd.exists(filePath)) {
EEPROM_readAnything(0, foldern);
for (int i = foldern; i >= 0; i--) {
sprintf(filePath, "/GB/SAVE/%s/%d/%s.SAV", fileName, i, fileName);
if (sd.exists(filePath)) {
print_Msg(F("Save number "));
print_Msg(i);
println_Msg(F(" found."));
saveFound = true;
sprintf(filePath, "/GB/SAVE/%s/%d", fileName, i);
sprintf(fileName, "%s.SAV", fileName);
writeSRAM_GB();
unsigned long wrErrors;
wrErrors = verifySRAM_GB();
if (wrErrors == 0) {
println_Msg(F("Verified OK"));
display_Update();
} else {
print_STR(error_STR, 0);
print_Msg(wrErrors);
print_STR(_bytes_STR, 1);
print_Error(did_not_verify_STR);
}
break;
}
}
}
if (!saveFound) {
println_Msg(F("Error: No save found."));
}
} else {
print_Error(F("Cart has no Sram"));
}
// Reset
wait();
resetArduino();
break;
case 3:
// Flash GB Smart
display_Clear();
display_Update();
setup_GBSmart();
mode = CORE_GB_GBSMART;
break;
case 4:
// Flash GBA Repro
GBAReproMenu();
break;
case 5:
// Read/Write GBA 369-in-1 Repro
repro369in1Menu();
break;
case 6:
resetArduino();
break;
}
break;
#endif
case 3:
// Flash GB Memory
display_Clear();
display_Update();
setup_GBM();
mode = CORE_GBM;
break;
case 4:
// Read or Write a Pelican Codebreaker or MonsterBrain
// Set Address Pins to Output
//A0-A7
DDRF = 0xFF;
//A8-A15
DDRK = 0xFF;
// Set Control Pins to Output RST(PH0) CLK(PH1) CS(PH3) WR(PH5) RD(PH6)
DDRH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 5) | (1 << 6);
// Output a high signal on all pins, pins are active low therefore everything is disabled now
PORTH |= (1 << 3) | (1 << 5) | (1 << 6);
// Output a low signal on CLK(PH1) to disable writing GB Camera RAM
// Output a low signal on RST(PH0) to initialize MMC correctly
PORTH &= ~((1 << 0) | (1 << 1));
// Set Data Pins (D0-D7) to Input
DDRC = 0x00;
// Enable Internal Pullups
PORTC = 0xFF;
delay(400);
// RST(PH0) to H
PORTH |= (1 << 0);
mode = CORE_GB;
display_Clear();
display_Update();
unsigned char gbPelican;
// Copy menuOptions out of progmem
convertPgm(menuOptionsGBPelican, 2);
gbPelican = question_box(F("Select operation:"), menuOptions, 2, 0);
// wait for user choice to come back from the question box menu
switch (gbPelican) {
case 0:
readPelican_GB();
feedbackPressAndReset();
break;
case 1:
writePelican_GB();
feedbackPressAndReset();
break;
}
break;
case 5:
// Read or Write a Datel Device (Mega Memory Card and Gameshark)
// Set Address Pins to Output
//A0-A7
DDRF = 0xFF;
//A8-A15
DDRK = 0xFF;
// Set Control Pins to Output RST(PH0) CLK(PH1) CS(PH3) WR(PH5) RD(PH6)
DDRH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 5) | (1 << 6);
// Output a high signal on all pins, pins are active low therefore everything is disabled now
PORTH |= (1 << 3) | (1 << 5) | (1 << 6);
// Output a low signal on CLK(PH1) to disable writing GB Camera RAM
// Output a low signal on RST(PH0) to initialize MMC correctly
PORTH &= ~((1 << 0) | (1 << 1));
// Set Data Pins (D0-D7) to Input
DDRC = 0x00;
// Enable Internal Pullups
PORTC = 0xFF;
delay(400);
// RST(PH0) to H
PORTH |= (1 << 0);
mode = CORE_GB;
display_Clear();
display_Update();
unsigned char gbDatel;
// Copy menuOptions out of progmem
convertPgm(menuOptionsGBDatel, 4);
gbDatel = question_box(F("Select operation:"), menuOptions, 4, 0);
// wait for user choice to come back from the question box menu
switch (gbDatel) {
case 0:
readMegaMem_GB();
feedbackPressAndReset();
break;
case 1:
writeMegaMem_GB();
feedbackPressAndReset();
break;
case 2:
readGameshark_GB();
feedbackPressAndReset();
break;
case 3:
writeGameshark_GB();
feedbackPressAndReset();
break;
}
break;
case 6:
resetArduino();
break;
default:
print_MissingModule(); // does not return
}
}
void gbMenu() {
// create menu with title and 4 options to choose from
unsigned char mainMenu;
// Copy menuOptions out of progmem
convertPgm(menuOptionsGB, 4);
mainMenu = question_box(F("GB Cart Reader"), menuOptions, 4, 0);
// wait for user choice to come back from the question box menu
switch (mainMenu) {
case 0:
display_Clear();
// Change working dir to root
sd.chdir("/");
readROM_GB();
compare_checksums_GB();
#ifdef ENABLE_GLOBAL_LOG
save_log();
#endif
break;
case 1:
display_Clear();
// Does cartridge have SRAM
if (lastByte > 0) {
// Change working dir to root
sd.chdir("/");
if (romType == 32)
readSRAMFLASH_MBC6_GB();
else if (romType == 34)
readEEPROM_MBC7_GB();
else
readSRAM_GB();
} else {
print_Error(F("No save or unsupported type"));
}
println_Msg(FS(FSTRING_EMPTY));
break;
case 2:
display_Clear();
// Does cartridge have SRAM
if (lastByte > 0) {
// Change working dir to root
sd.chdir("/");
filePath[0] = '\0';
fileBrowser(F("Select sav file"));
if (romType == 32)
writeSRAMFLASH_MBC6_GB();
else if (romType == 34)
writeEEPROM_MBC7_GB();
else {
writeSRAM_GB();
unsigned long wrErrors;
wrErrors = verifySRAM_GB();
if (wrErrors == 0) {
println_Msg(F("Verified OK"));
display_Update();
} else {
print_STR(error_STR, 0);
print_Msg(wrErrors);
print_STR(_bytes_STR, 1);
print_Error(did_not_verify_STR);
}
}
} else {
print_Error(F("No save or unsupported type"));
}
println_Msg(FS(FSTRING_EMPTY));
break;
case 3:
resetArduino();
break;
}
// Prints string out of the common strings array either with or without newline
print_STR(press_button_STR, 1);
display_Update();
wait();
}
/******************************************
Setup
*****************************************/
void setup_GB() {
// Request 5V
setVoltage(VOLTS_SET_5V);
// Set Address Pins to Output
//A0-A7
DDRF = 0xFF;
//A8-A15
DDRK = 0xFF;
// Set Control Pins to Output RST(PH0) CLK(PH1) CS(PH3) WR(PH5) RD(PH6)
DDRH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 5) | (1 << 6);
// Output a high signal on all pins, pins are active low therefore everything is disabled now
PORTH |= (1 << 3) | (1 << 5) | (1 << 6);
// Output a low signal on CLK(PH1) to disable writing GB Camera RAM
// Output a low signal on RST(PH0) to initialize MMC correctly
PORTH &= ~((1 << 0) | (1 << 1));
// Set Audio-In(PH4) to Input
DDRH &= ~(1 << 4);
// Enable Internal Pullup
PORTH |= (1 << 4);
// Set Data Pins (D0-D7) to Input
DDRC = 0x00;
// Enable Internal Pullups
PORTC = 0xFF;
delay(400);
// RST(PH0) to HIGH
PORTH |= (1 << 0);
// Print start page
getCartInfo_GB();
showCartInfo_GB();
// MMM01 initialize
if (romType >= 11 && romType <= 13) {
writeByte_GB(0x3fff, 0x00);
writeByte_GB(0x5fff, 0x40);
writeByte_GB(0x7fff, 0x01);
writeByte_GB(0x1fff, 0x3a);
writeByte_GB(0x1fff, 0x7a);
}
}
void showCartInfo_GB() {
display_Clear();
if (strcmp(checksumStr, "00") != 0) {
print_Msg(FS(FSTRING_NAME));
println_Msg(romName);
if (cartID[0] != 0) {
print_Msg(FS(FSTRING_SERIAL));
println_Msg(cartID);
}
print_Msg(FS(FSTRING_REVISION));
println_Msg(romVersion);
print_Msg(FS(FSTRING_MAPPER));
if ((romType == 0) || (romType == 8) || (romType == 9))
print_Msg(F("none"));
else if ((romType == 1) || (romType == 2) || (romType == 3))
print_Msg(F("MBC1"));
else if ((romType == 5) || (romType == 6))
print_Msg(F("MBC2"));
else if ((romType == 11) || (romType == 12) || (romType == 13))
print_Msg(F("MMM01"));
else if ((romType == 15) || (romType == 16) || (romType == 17) || (romType == 18) || (romType == 19))
print_Msg(F("MBC3"));
else if ((romType == 21) || (romType == 22) || (romType == 23))
print_Msg(F("MBC4"));
else if ((romType == 25) || (romType == 26) || (romType == 27) || (romType == 28) || (romType == 29) || (romType == 309))
print_Msg(F("MBC5"));
else if (romType == 32)
print_Msg(F("MBC6"));
else if (romType == 34)
print_Msg(F("MBC7"));
else if (romType == 252)
print_Msg(F("Camera"));
else if (romType == 253)
print_Msg(F("TAMA5"));
else if (romType == 254)
print_Msg(F("HuC-3"));
else if (romType == 255)
print_Msg(F("HuC-1"));
else if ((romType == 0x101) || (romType == 0x103))
print_Msg(F("MBC1M"));
else if (romType == 0x104)
print_Msg(F("M161"));
println_Msg(FS(FSTRING_EMPTY));
print_Msg(FS(FSTRING_ROM_SIZE));
switch (romSize) {
case 0:
print_Msg(F("32 KB"));
break;
case 1:
print_Msg(F("64 KB"));
break;
case 2:
print_Msg(F("128 KB"));
break;
case 3:
print_Msg(F("256 KB"));
break;
case 4:
print_Msg(F("512 KB"));
break;
case 5:
print_Msg(F("1 MB"));
break;
case 6:
print_Msg(F("2 MB"));
break;
case 7:
print_Msg(F("4 MB"));
break;
case 8:
print_Msg(F("8 MB"));
break;
}
println_Msg(FS(FSTRING_EMPTY));
//print_Msg(F("Banks: "));
//println_Msg(romBanks);
print_Msg(F("Save Size: "));
switch (sramSize) {
case 0:
if (romType == 6) {
print_Msg(F("512 Byte"));
} else if (romType == 0x22) {
print_Msg(lastByte);
print_Msg(F(" Byte"));
} else if (romType == 0xFD) {
print_Msg(F("32 Byte"));
} else {
print_Msg(F("None"));
}
break;
case 1:
print_Msg(F("2 KB"));
break;
case 2:
print_Msg(F("8 KB"));
break;
case 3:
if (romType == 0x20) {
print_Msg(F("1.03 MB"));
} else {
print_Msg(F("32 KB"));
}
break;
case 4:
print_Msg(F("128 KB"));
break;
case 5:
print_Msg(F("64 KB"));
break;
default: print_Msg(F("None"));
}
println_Msg(FS(FSTRING_EMPTY));
//print_Msg(F("Checksum: "));
//println_Msg(checksumStr);
//display_Update();
// Wait for user input
println_Msg(FS(FSTRING_EMPTY));
// Prints string out of the common strings array either with or without newline
print_STR(press_button_STR, 1);
display_Update();
wait();
} else {
print_FatalError(F("GAMEPAK ERROR"));
}
}
/******************************************
Low level functions
*****************************************/
byte readByte_GB(word myAddress) {
// Set address
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
// Switch data pins to input
DDRC = 0x00;
// Enable pullups
PORTC = 0xFF;
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
// Switch RD(PH6) to LOW
PORTH &= ~(1 << 6);
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
// Read
byte tempByte = PINC;
// Switch and RD(PH6) to HIGH
PORTH |= (1 << 6);
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
return tempByte;
}
void writeByte_GB(int myAddress, byte myData) {
// Set address
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
// Set data
PORTC = myData;
// Switch data pins to output
DDRC = 0xFF;
// Wait till output is stable
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
if (audioWE)
// Pull Audio-In(PH4) low
PORTH &= ~(1 << 4);
// Pull WR(PH5) low
PORTH &= ~(1 << 5);
// Leave WR low for at least 60ns
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
if (audioWE)
// Pull Audio-In(PH4) HIGH
PORTH |= (1 << 4);
// Pull WR(PH5) HIGH
PORTH |= (1 << 5);
// Leave WR high for at least 50ns
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
// Switch data pins to input
DDRC = 0x00;
// Enable pullups
PORTC = 0xFF;
}
// Triggers CS and CLK pin
byte readByteSRAM_GB(word myAddress) {
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
// Switch data pins to input
DDRC = 0x00;
// Enable pullups
PORTC = 0xFF;
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
// Pull CS(PH3) CLK(PH1)(for FRAM MOD) LOW
PORTH &= ~((1 << 3) | (1 << 1));
// Pull RD(PH6) LOW
PORTH &= ~(1 << 6);
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
// Read
byte tempByte = PINC;
// Pull RD(PH6) HIGH
PORTH |= (1 << 6);
if (romType == 252) {
// Pull CS(PH3) HIGH
PORTH |= (1 << 3);
} else {
// Pull CS(PH3) CLK(PH1)(for FRAM MOD) HIGH
PORTH |= (1 << 3) | (1 << 1);
}
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
return tempByte;
}
// Triggers CS and CLK pin
void writeByteSRAM_GB(int myAddress, byte myData) {
// Set address
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
// Set data
PORTC = myData;
// Switch data pins to output
DDRC = 0xFF;
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
if (romType == 252 || romType == 253) {
// Pull CS(PH3) LOW
PORTH &= ~(1 << 3);
// Pull CLK(PH1)(for GB CAM) HIGH
PORTH |= (1 << 1);
// Pull WR(PH5) low
PORTH &= ~(1 << 5);
} else {
// Pull CS(PH3) CLK(PH1)(for FRAM MOD) LOW
PORTH &= ~((1 << 3) | (1 << 1));
// Pull WR(PH5) low
PORTH &= ~(1 << 5);
}
// Leave WR low for at least 60ns
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
if (romType == 252 || romType == 253) {
// Pull WR(PH5) HIGH
PORTH |= (1 << 5);
// Pull CS(PH3) HIGH
PORTH |= (1 << 3);
// Pull CLK(PH1) LOW (for GB CAM)
PORTH &= ~(1 << 1);
} else {
// Pull WR(PH5) HIGH
PORTH |= (1 << 5);
// Pull CS(PH3) CLK(PH1)(for FRAM MOD) HIGH
PORTH |= (1 << 3) | (1 << 1);
}
// Leave WR high for at least 50ns
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
// Switch data pins to input
DDRC = 0x00;
// Enable pullups
PORTC = 0xFF;
}
/******************************************
Game Boy functions
*****************************************/
// Read Cartridge Header
void getCartInfo_GB() {
// Read Header into array
for (int currByte = 0x100; currByte < 0x150; currByte++) {
sdBuffer[currByte] = readByte_GB(currByte);
}
/* Compare Nintendo logo against known checksum, 156 bytes starting at 0x04
word logoChecksum = 0;
for (int currByte = 0x104; currByte < 0x134; currByte++) {
logoChecksum += sdBuffer[currByte];
}
if (logoChecksum != 0x1546) {
print_Error(F("STARTUP LOGO ERROR"));
println_Msg(FS(FSTRING_EMPTY));
println_Msg(FS(FSTRING_EMPTY));
println_Msg(FS(FSTRING_EMPTY));
println_Msg(F("Press Button to"));
println_Msg(F("ignore or powercycle"));
println_Msg(F("to try again"));
display_Update();
wait();
}
*/
// Calculate header checksum
byte headerChecksum = 0;
for (int currByte = 0x134; currByte < 0x14D; currByte++) {
headerChecksum = headerChecksum - sdBuffer[currByte] - 1;
}
if (headerChecksum != sdBuffer[0x14D]) {
// Read Header into array a second time
for (int currByte = 0x100; currByte < 0x150; currByte++) {
sdBuffer[currByte] = readByte_GB(currByte);
}
// Calculate header checksum a second time
headerChecksum = 0;
for (int currByte = 0x134; currByte < 0x14D; currByte++) {
headerChecksum = headerChecksum - sdBuffer[currByte] - 1;
}
}
if (headerChecksum != sdBuffer[0x14D]) {
print_Error(F("HEADER CHECKSUM ERROR"));
println_Msg(FS(FSTRING_EMPTY));
println_Msg(FS(FSTRING_EMPTY));
println_Msg(FS(FSTRING_EMPTY));
println_Msg(F("Press Button to"));
println_Msg(F("ignore or clean"));
println_Msg(F("cart and try again"));
display_Update();
wait();
}
romType = sdBuffer[0x147];
romSize = sdBuffer[0x148];
sramSize = sdBuffer[0x149];
// Get Checksum as string
eepbit[6] = sdBuffer[0x14E];
eepbit[7] = sdBuffer[0x14F];
sprintf(checksumStr, "%02X%02X", eepbit[6], eepbit[7]);
// ROM banks
romBanks = 2;
if (romSize >= 0x01 && romSize <= 0x08) {
romBanks = int_pow(2, romSize + 1);
}
// SRAM banks
sramBanks = 0;
if (romType == 6) {
sramBanks = 1;
}
// SRAM size
switch (sramSize) {
case 2:
sramBanks = 1;
break;
case 3:
sramBanks = 4;
break;
case 4:
sramBanks = 16;
break;
case 5:
sramBanks = 8;
break;
}
// Last byte of SRAM
if (romType == 6) {
lastByte = 0xA1FF;
}
if (sramSize == 1) {
lastByte = 0xA7FF;
} else if (sramSize > 1) {
lastByte = 0xBFFF;
}
// MBC6
if (romType == 32) {
sramBanks = 8;
lastByte = 0xAFFF;
} else if (romType == 34) { // MBC7
lastByte = (*((uint16_t*)(eepbit + 6)) == 0xa5be ? 512 : 256); // Only "Command Master" use LC66 EEPROM
}
// Get name
byte myByte = 0;
byte myLength = 0;
byte x = 0;
if (sdBuffer[0x143] == 0x80 || sdBuffer[0x143] == 0xC0) {
x++;
}
for (int addr = 0x0134; addr <= 0x0143 - x; addr++) {
myByte = sdBuffer[addr];
if (isprint(myByte) && myByte != '<' && myByte != '>' && myByte != ':' && myByte != '"' && myByte != '/' && myByte != '\\' && myByte != '|' && myByte != '?' && myByte != '*') {
romName[myLength++] = char(myByte);
} else if (myLength == 0 || romName[myLength - 1] != '_') {
romName[myLength++] = '_';
}
}
// Find Game Serial
cartID[0] = 0;
if (sdBuffer[0x143] == 0x80 || sdBuffer[0x143] == 0xC0) {
if ((romName[myLength - 4] == 'A' || romName[myLength - 4] == 'B' || romName[myLength - 4] == 'H' || romName[myLength - 4] == 'K' || romName[myLength - 4] == 'V') && (romName[myLength - 1] == 'A' || romName[myLength - 1] == 'B' || romName[myLength - 1] == 'D' || romName[myLength - 1] == 'E' || romName[myLength - 1] == 'F' || romName[myLength - 1] == 'I' || romName[myLength - 1] == 'J' || romName[myLength - 1] == 'K' || romName[myLength - 1] == 'P' || romName[myLength - 1] == 'S' || romName[myLength - 1] == 'U' || romName[myLength - 1] == 'X' || romName[myLength - 1] == 'Y')) {
cartID[0] = romName[myLength - 4];
cartID[1] = romName[myLength - 3];
cartID[2] = romName[myLength - 2];
cartID[3] = romName[myLength - 1];
myLength -= 4;
romName[myLength] = 0;
}
}
// Strip trailing white space
while (
myLength && (romName[myLength - 1] == '_' || romName[myLength - 1] == ' ')) {
myLength--;
}
romName[myLength] = 0;
// M161 (Mani 4 in 1)
if (strncmp(romName, "TETRIS SET", 10) == 0 && sdBuffer[0x14D] == 0x3F) {
romType = 0x104;
}
// MMM01 (Mani 4 in 1)
if (
(
strncmp(romName, "BOUKENJIMA2 SET", 15) == 0 && sdBuffer[0x14D] == 0)
|| (strncmp(romName, "BUBBLEBOBBLE SET", 16) == 0 && sdBuffer[0x14D] == 0xC6) || (strncmp(romName, "GANBARUGA SET", 13) == 0 && sdBuffer[0x14D] == 0x90) || (strncmp(romName, "RTYPE 2 SET", 11) == 0 && sdBuffer[0x14D] == 0x32)) {
romType = 0x0B;
}
// MBC1M
if (
(
strncmp(romName, "MOMOCOL", 7) == 0 && sdBuffer[0x14D] == 0x28)
|| (strncmp(romName, "BOMCOL", 6) == 0 && sdBuffer[0x14D] == 0x86) || (strncmp(romName, "GENCOL", 6) == 0 && sdBuffer[0x14D] == 0x8A) || (strncmp(romName, "SUPERCHINESE 123", 16) == 0 && sdBuffer[0x14D] == 0xE4) || (strncmp(romName, "MORTALKOMBATI&II", 16) == 0 && sdBuffer[0x14D] == 0xB9) || (strncmp(romName, "MORTALKOMBAT DUO", 16) == 0 && sdBuffer[0x14D] == 0xA7)) {
romType += 0x100;
}
// ROM revision
romVersion = sdBuffer[0x14C];
}
/******************************************
ROM functions
*****************************************/
// Read ROM
void readROM_GB() {
// Get name, add extension and convert to char array for sd lib
createFolderAndOpenFile("GB", "ROM", romName, "gb");
word endAddress = 0x7FFF;
word romAddress = 0;
word startBank = 1;
//Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)(romBanks)*16384;
draw_progressbar(0, totalProgressBar);
// M161 banks are double size and start with 0
if (romType == 0x104) {
startBank = 0;
romBanks >>= 1;
endAddress = 0x7FFF;
}
// MBC6 banks are half size
else if (romType == 32) {
romBanks <<= 1;
endAddress = 0x3FFF;
}
for (word currBank = startBank; currBank < romBanks; currBank++) {
// Second bank starts at 0x4000
if (currBank > 1) {
romAddress = 0x4000;
// MBC6 banks are half size
if (romType == 32) {
endAddress = 0x5FFF;
}
}
// Set ROM bank for M161
if (romType == 0x104) {
romAddress = 0;
PORTH &= ~(1 << 0);
delay(50);
PORTH |= (1 << 0);
writeByte_GB(0x4000, currBank & 0x7);
}
// Set ROM bank for MBC1M
else if (romType == 0x101 || romType == 0x103) {
if (currBank < 10) {
writeByte_GB(0x4000, currBank >> 4);
writeByte_GB(0x2000, (currBank & 0x1f));
} else {
writeByte_GB(0x4000, currBank >> 4);
writeByte_GB(0x2000, 0x10 | (currBank & 0x1f));
}
}
// Set ROM bank for MBC6
else if (romType == 32) {
writeByte_GB(0x2800, 0);
writeByte_GB(0x3800, 0);
writeByte_GB(0x2000, currBank);
writeByte_GB(0x3000, currBank);
}
// Set ROM bank for TAMA5
else if (romType == 0xFD) {
writeByteSRAM_GB(0xA001, 0);
writeByteSRAM_GB(0xA000, currBank & 0x0f);
writeByteSRAM_GB(0xA001, 1);
writeByteSRAM_GB(0xA000, (currBank >> 4) & 0x0f);
}
// Set ROM bank for MBC2/3/4/5
else if (romType >= 5) {
if (romType >= 11 && romType <= 13) {
if ((currBank & 0x1f) == 0) {
// reset MMM01
PORTH &= ~(1 << 0);
PORTH |= (1 << 0);
// remap to higher 4Mbits ROM
writeByte_GB(0x3fff, 0x20);
writeByte_GB(0x5fff, 0x40);
writeByte_GB(0x7fff, 0x01);
writeByte_GB(0x1fff, 0x3a);
writeByte_GB(0x1fff, 0x7a);
// for every 4Mbits ROM, restart from 0x0000
romAddress = 0x0000;
currBank++;
} else {
writeByte_GB(0x6000, 0);
writeByte_GB(0x2000, (currBank & 0x1f));
}
} else {
if ((romType >= 0x19 && romType <= 0x1E) && (currBank == 0 || currBank == 256)) {
writeByte_GB(0x3000, (currBank >> 8) & 0xFF);
}
writeByte_GB(0x2100, currBank & 0xFF);
}
}
// Set ROM bank for MBC1
else {
writeByte_GB(0x6000, 0);
writeByte_GB(0x4000, currBank >> 5);
writeByte_GB(0x2000, currBank & 0x1F);
}
// Read banks and save to SD
while (romAddress <= endAddress) {
for (int i = 0; i < 512; i++) {
sdBuffer[i] = readByte_GB(romAddress + i);
}
myFile.write(sdBuffer, 512);
romAddress += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
// Close the file:
myFile.close();
}
// Calculate checksum
unsigned int calc_checksum_GB(char* fileName) {
unsigned int calcChecksum = 0;
// int calcFilesize = 0; // unused
unsigned long i = 0;
int c = 0;
// If file exists
if (myFile.open(fileName, O_READ)) {
//calcFilesize = myFile.fileSize() * 8 / 1024 / 1024; // unused
for (i = 0; i < (myFile.fileSize() / 512); i++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksum += sdBuffer[c];
}
}
myFile.close();
// Subtract checksum bytes
calcChecksum -= eepbit[6];
calcChecksum -= eepbit[7];
// Return result
return (calcChecksum);
}
// Else show error
else {
print_Error(F("DUMP ROM 1ST"));
return 0;
}
}
// Compare checksum
void compare_checksums_GB() {
strcpy(fileName, romName);
strcat(fileName, ".GB");
// last used rom folder
EEPROM_readAnything(0, foldern);
sprintf(folder, "GB/ROM/%s/%d", romName, foldern - 1);
if (strcmp(folder, "root") != 0)
sd.chdir(folder);
// Internal ROM checksum
char calcsumStr[5];
sprintf(calcsumStr, "%04X", calc_checksum_GB(fileName));
print_Msg(FS(FSTRING_CHECKSUM));
print_Msg(calcsumStr);
if (strcmp(calcsumStr, checksumStr) == 0) {
println_Msg(F(" -> OK"));
} else {
print_Msg(F(" != "));
println_Msg(checksumStr);
print_Error(F("Invalid Checksum"));
}
compareCRC("gb.txt", 0, 1, 0);
display_Update();
//go to root
sd.chdir();
}
/******************************************
SRAM functions
*****************************************/
void disableFlashSaveMemory() {
writeByte_GB(0x1000, 0x01);
writeByte_GB(0x0C00, 0x00);
writeByte_GB(0x1000, 0x00);
writeByte_GB(0x2800, 0x00);
writeByte_GB(0x3800, 0x00);
}
// Read RAM
void readSRAM_GB() {
// Does cartridge have RAM
if (lastByte > 0) {
// Get name, add extension and convert to char array for sd lib
createFolder("GB", "SAVE", romName, "sav");
// write new folder number back to eeprom
foldern = foldern + 1;
EEPROM_writeAnything(0, foldern);
//open file on sd card
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
print_FatalError(sd_error_STR);
}
// MBC2 Fix
readByte_GB(0x0134);
if (romType <= 4 || (romType >= 11 && romType <= 13)) {
writeByte_GB(0x6000, 1);
}
// Initialise MBC
writeByte_GB(0x0000, 0x0A);
// Switch SRAM banks
for (byte currBank = 0; currBank < sramBanks; currBank++) {
writeByte_GB(0x4000, currBank);
// Read SRAM
for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress += 64) {
for (byte i = 0; i < 64; i++) {
sdBuffer[i] = readByteSRAM_GB(sramAddress + i);
}
myFile.write(sdBuffer, 64);
}
}
// Disable SRAM
writeByte_GB(0x0000, 0x00);
// Close the file:
myFile.close();
// Signal end of process
print_Msg(F("Saved to "));
print_Msg(folder);
println_Msg(F("/"));
display_Update();
} else {
print_Error(F("Cart has no SRAM"));
}
}
// Write RAM
void writeSRAM_GB() {
// Does cartridge have SRAM
if (lastByte > 0) {
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
//open file on sd card
if (myFile.open(filePath, O_READ)) {
// MBC2 Fix
readByte_GB(0x0134);
// Enable SRAM for MBC1
if (romType <= 4 || (romType >= 11 && romType <= 13)) {
writeByte_GB(0x6000, 1);
}
// Initialise MBC
writeByte_GB(0x0000, 0x0A);
// Switch RAM banks
for (byte currBank = 0; currBank < sramBanks; currBank++) {
writeByte_GB(0x4000, currBank);
// Write RAM
for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress++) {
writeByteSRAM_GB(sramAddress, myFile.read());
}
}
// Disable SRAM
writeByte_GB(0x0000, 0x00);
// Close the file:
myFile.close();
display_Clear();
println_Msg(F("SRAM writing finished"));
display_Update();
} else {
print_Error(FS(FSTRING_FILE_DOESNT_EXIST));
}
} else {
print_Error(F("Cart has no SRAM"));
}
}
// Check if the SRAM was written without any error
unsigned long verifySRAM_GB() {
//open file on sd card
if (myFile.open(filePath, O_READ)) {
// Variable for errors
writeErrors = 0;
// MBC2 Fix
readByte_GB(0x0134);
// Check SRAM size
if (lastByte > 0) {
if (romType <= 4) { // MBC1
writeByte_GB(0x6000, 1); // Set RAM Mode
}
// Initialise MBC
writeByte_GB(0x0000, 0x0A);
// Switch SRAM banks
for (byte currBank = 0; currBank < sramBanks; currBank++) {
writeByte_GB(0x4000, currBank);
// Read SRAM
for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress += 64) {
//fill sdBuffer
myFile.read(sdBuffer, 64);
for (int c = 0; c < 64; c++) {
if (readByteSRAM_GB(sramAddress + c) != sdBuffer[c]) {
writeErrors++;
}
}
}
}
// Disable RAM
writeByte_GB(0x0000, 0x00);
}
// Close the file:
myFile.close();
return writeErrors;
} else {
print_FatalError(open_file_STR);
return 1;
}
}
// Read SRAM + FLASH save data of MBC6
void readSRAMFLASH_MBC6_GB() {
// Get name, add extension and convert to char array for sd lib
createFolderAndOpenFile("GB", "SAVE", romName, "sav");
//Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = 0x108000;
draw_progressbar(0, totalProgressBar);
// Enable Mapper and SRAM
writeByte_GB(0x0000, 0x0A);
// Switch SRAM banks
for (byte currBank = 0; currBank < sramBanks; currBank++) {
writeByte_GB(0x0400, currBank);
writeByte_GB(0x0800, currBank);
// Read SRAM
for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress += 64) {
for (byte i = 0; i < 64; i++) {
sdBuffer[i] = readByteSRAM_GB(sramAddress + i);
}
myFile.write(sdBuffer, 64);
processedProgressBar += 64;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
// Disable SRAM
writeByte_GB(0x0000, 0x00);
// Enable flash save memory (map to ROM)
writeByte_GB(0x1000, 0x01);
writeByte_GB(0x0C00, 0x01);
writeByte_GB(0x1000, 0x00);
writeByte_GB(0x2800, 0x08);
writeByte_GB(0x3800, 0x08);
// Switch FLASH banks
for (byte currBank = 0; currBank < 128; currBank++) {
word romAddress = 0x4000;
writeByte_GB(0x2000, currBank);
writeByte_GB(0x3000, currBank);
// Read banks and save to SD
while (romAddress <= 0x5FFF) {
for (int i = 0; i < 512; i++) {
sdBuffer[i] = readByte_GB(romAddress + i);
}
myFile.write(sdBuffer, 512);
romAddress += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
disableFlashSaveMemory();
// Close the file:
myFile.close();
// Signal end of process
println_Msg(FS(FSTRING_OK));
display_Update();
}
// Write RAM
void writeSRAMFLASH_MBC6_GB() {
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
//open file on sd card
if (myFile.open(filePath, O_READ)) {
display_Clear();
println_Msg(F("Writing MBC6 save..."));
display_Update();
//Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = 0x108000;
draw_progressbar(0, totalProgressBar);
// Enable Mapper and SRAM
writeByte_GB(0x0000, 0x0A);
// Switch SRAM banks
for (byte currBank = 0; currBank < sramBanks; currBank++) {
writeByte_GB(0x0400, currBank);
writeByte_GB(0x0800, currBank);
// Write SRAM
for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress++) {
writeByteSRAM_GB(sramAddress, myFile.read());
}
processedProgressBar += (lastByte + 1) - 0xA000;
draw_progressbar(processedProgressBar, totalProgressBar);
}
// Disable SRAM
writeByte_GB(0x0000, 0x00);
// Enable flash save memory (map to ROM)
writeByte_GB(0x1000, 0x01);
writeByte_GB(0x0C00, 0x01);
writeByte_GB(0x1000, 0x01);
writeByte_GB(0x2800, 0x08);
writeByte_GB(0x3800, 0x08);
for (byte currBank = 0; currBank < 128; currBank++) {
word romAddress = 0x4000;
// Erase FLASH sector
if (((processedProgressBar - 0x8000) % 0x20000) == 0) {
writeByte_GB(0x2800, 0x08);
writeByte_GB(0x3800, 0x08);
writeByte_GB(0x2000, 0x01);
writeByte_GB(0x3000, 0x02);
writeByte_GB(0x7555, 0xAA);
writeByte_GB(0x4AAA, 0x55);
writeByte_GB(0x7555, 0x80);
writeByte_GB(0x7555, 0xAA);
writeByte_GB(0x4AAA, 0x55);
writeByte_GB(0x2800, 0x08);
writeByte_GB(0x3800, 0x08);
writeByte_GB(0x2000, currBank);
writeByte_GB(0x3000, currBank);
writeByte_GB(0x4000, 0x30);
byte lives = 100;
while (1) {
byte sr = readByte_GB(0x4000);
if (sr == 0x80) break;
delay(1);
if (lives-- <= 0) {
disableFlashSaveMemory();
myFile.close();
display_Clear();
print_FatalError(F("Error erasing FLASH sector."));
}
}
} else {
writeByte_GB(0x2800, 0x08);
writeByte_GB(0x3800, 0x08);
writeByte_GB(0x2000, currBank);
writeByte_GB(0x3000, currBank);
}
// Write to FLASH
while (romAddress <= 0x5FFF) {
writeByte_GB(0x2000, 0x01);
writeByte_GB(0x3000, 0x02);
writeByte_GB(0x7555, 0xAA);
writeByte_GB(0x4AAA, 0x55);
writeByte_GB(0x7555, 0xA0);
writeByte_GB(0x2800, 0x08);
writeByte_GB(0x3800, 0x08);
writeByte_GB(0x2000, currBank);
writeByte_GB(0x3000, currBank);
for (int i = 0; i < 128; i++) {
writeByte_GB(romAddress++, myFile.read());
}
writeByte_GB(romAddress - 1, 0x00);
byte lives = 100;
while (1) {
byte sr = readByte_GB(romAddress - 1);
if (sr == 0x80) break;
delay(1);
if (lives-- <= 0) {
disableFlashSaveMemory();
myFile.close();
display_Clear();
print_FatalError(F("Error writing to FLASH."));
}
}
writeByte_GB(romAddress - 1, 0xF0);
processedProgressBar += 128;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
disableFlashSaveMemory();
// Close the file:
myFile.close();
println_Msg(F("Save writing finished"));
display_Update();
} else {
print_Error(FS(FSTRING_FILE_DOESNT_EXIST));
}
}
void readEEPROM_MBC7_GB() {
// Get name, add extension and convert to char array for sd lib
createFolder("GB", "SAVE", romName, "sav");
// write new folder number back to eeprom
foldern = foldern + 1;
EEPROM_writeAnything(0, foldern);
//open file on sd card
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
print_FatalError(sd_error_STR);
}
display_Clear();
print_STR(saving_to_STR, 0);
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
uint16_t* data = (uint16_t*)sdBuffer;
// enable 0xa000 - 0xbfff access
writeByte_GB(0x0000, 0x0a);
writeByte_GB(0x4000, 0x40);
// set CS high
writeByte_GB(0xa080, 0x00);
writeByte_GB(0xa080, 0x80);
sendMBC7EEPROM_Inst_GB(2, 0, 0);
// read data from EEPROM
for (uint16_t i = 0; i < lastByte; i += 2, data++) {
*data = 0;
for (uint8_t j = 0; j < 16; j++) {
writeByte_GB(0xa080, 0x80);
writeByte_GB(0xa080, 0xc0);
*data <<= 1;
*data |= (readByte_GB(0xa080) & 0x01);
}
}
// deselect chip and ram access
writeByte_GB(0xa080, 0x00);
writeByte_GB(0x0000, 0x00);
writeByte_GB(0x4000, 0x00);
myFile.write(sdBuffer, lastByte);
myFile.close();
print_STR(done_STR, true);
display_Update();
}
void writeEEPROM_MBC7_GB() {
sprintf(filePath, "%s/%s", filePath, fileName);
// open file on sd card
if (!myFile.open(filePath, O_READ))
print_Error(FS(FSTRING_FILE_DOESNT_EXIST));
myFile.read(sdBuffer, lastByte);
myFile.close();
display_Clear();
uint16_t* data = (uint16_t*)sdBuffer;
// enable 0xa000 - 0xbfff access
writeByte_GB(0x0000, 0x0a);
writeByte_GB(0x4000, 0x40);
// set CS high
writeByte_GB(0xa080, 0x00);
writeByte_GB(0xa080, 0x80);
println_Msg(F("Unlocking EEPROM..."));
display_Update();
// unlock EEPROM by sending EWEN instruction
sendMBC7EEPROM_Inst_GB(0, 0xc0, 0);
// set CS low
writeByte_GB(0xa080, 0x00);
println_Msg(F("Erasing EEPROM..."));
display_Update();
// erase entire EEPROM by sending ERAL instruction
sendMBC7EEPROM_Inst_GB(0, 0x80, 0);
// set CS low
writeByte_GB(0xa080, 0x00);
// set CS high
writeByte_GB(0xa080, 0x80);
// wait for erase complete
do {
writeByte_GB(0xa080, 0x80);
writeByte_GB(0xa080, 0xc0);
} while ((readByte_GB(0xa080) & 0x01) == 0);
println_Msg(F("Writing EEPROM..."));
display_Update();
// write data to EEPROM by sending WRITE instruction word by word
for (uint16_t i = 0; i < lastByte; i += 2, data++) {
sendMBC7EEPROM_Inst_GB(1, (i >> 1), *data);
// set CS low
writeByte_GB(0xa080, 0x00);
// set CS high
writeByte_GB(0xa080, 0x80);
// wait for writing complete
do {
writeByte_GB(0xa080, 0x80);
writeByte_GB(0xa080, 0xc0);
} while ((readByte_GB(0xa080) & 0x01) == 0);
}
println_Msg(F("Locking EEPROM..."));
display_Update();
// re-lock EEPROM
sendMBC7EEPROM_Inst_GB(0, 0, 0);
writeByte_GB(0xa080, 0x00);
// disable ram access
writeByte_GB(0x0000, 0x00);
writeByte_GB(0x4000, 0x00);
// done
print_STR(done_STR, true);
display_Update();
}
void sendMBC7EEPROM_Inst_GB(uint8_t op, uint8_t addr, uint16_t data) {
boolean send_data = false;
uint8_t i;
op = op & 0x03;
if (op == 0) {
addr &= 0xc0;
if (addr == 0x40)
send_data = true;
} else if (op == 1) {
send_data = true;
}
// send start bit
writeByte_GB(0xa080, 0x82);
writeByte_GB(0xa080, 0xc2);
// send op
for (i = 0; i < 2; i++, op <<= 1) {
eepbit[1] = (op & 0x02);
eepbit[0] = (eepbit[1] | 0x80);
eepbit[1] |= 0xc0;
writeByte_GB(0xa080, eepbit[0]);
writeByte_GB(0xa080, eepbit[1]);
}
// send addr
for (i = 0; i < 8; i++, addr <<= 1) {
eepbit[1] = ((addr & 0x80) >> 6);
eepbit[0] = (eepbit[1] | 0x80);
eepbit[1] |= 0xc0;
writeByte_GB(0xa080, eepbit[0]);
writeByte_GB(0xa080, eepbit[1]);
}
if (send_data) {
for (i = 0; i < 16; i++, data <<= 1) {
eepbit[1] = ((data & 0x8000) >> 14);
eepbit[0] = (eepbit[1] | 0x80);
eepbit[1] |= 0xc0;
writeByte_GB(0xa080, eepbit[0]);
writeByte_GB(0xa080, eepbit[1]);
}
}
}
#if defined(ENABLE_FLASH)
/******************************************
29F016/29F032/29F033 flashrom functions
*****************************************/
void sendFlash29FCommand_GB(byte cmd) {
writeByte_GB(0x555, 0xaa);
writeByte_GB(0x2aa, 0x55);
writeByte_GB(0x555, cmd);
}
// Write 29F032 flashrom
// A0-A13 directly connected to cart edge -> 16384(0x0-0x3FFF) bytes per bank -> 256(0x0-0xFF) banks
// A14-A21 connected to MBC5
void writeFlash29F_GB(byte MBC, boolean flashErase) {
// Launch filebrowser
filePath[0] = '\0';
sd.chdir("/");
fileBrowser(FS(FSTRING_SELECT_FILE));
display_Clear();
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
// Open file on sd card
if (myFile.open(filePath, O_READ)) {
// Get rom size from file
myFile.seekCur(0x147);
romType = myFile.read();
romSize = myFile.read();
// Go back to file beginning
myFile.seekSet(0);
// ROM banks
romBanks = 2;
if (romSize >= 0x01 && romSize <= 0x07) {
romBanks = int_pow(2, romSize + 1);
}
// Set ROM bank hi 0
writeByte_GB(0x3000, 0);
// Set ROM bank low 0
writeByte_GB(0x2000, 0);
delay(100);
// Reset flash
writeByte_GB(0x555, 0xf0);
delay(100);
// ID command sequence
sendFlash29FCommand_GB(0x90);
// Read the two id bytes into a string
flashid = readByte_GB(0) << 8;
flashid |= readByte_GB(1);
if (flashid == 0x04D4) {
println_Msg(F("MBM29F033C"));
print_Msg(F("Banks: "));
print_Msg(romBanks);
println_Msg(F("/256"));
display_Update();
} else if (flashid == 0x0141) {
println_Msg(F("AM29F032B"));
print_Msg(F("Banks: "));
print_Msg(romBanks);
println_Msg(F("/256"));
display_Update();
} else if (flashid == 0x01AD) {
println_Msg(F("AM29F016B"));
print_Msg(F("Banks: "));
print_Msg(romBanks);
println_Msg(F("/128"));
display_Update();
} else if (flashid == 0x04AD) {
println_Msg(F("AM29F016D"));
print_Msg(F("Banks: "));
print_Msg(romBanks);
println_Msg(F("/128"));
display_Update();
} else if (flashid == 0x01D5) {
println_Msg(F("AM29F080B"));
print_Msg(F("Banks: "));
print_Msg(romBanks);
println_Msg(F("/64"));
display_Update();
} else {
print_Msg(F("Flash ID: "));
sprintf(flashid_str, "%04X", flashid);
println_Msg(flashid_str);
display_Update();
print_FatalError(F("Unknown flashrom"));
}
// Reset flash
writeByte_GB(0x555, 0xf0);
delay(100);
if (flashErase) {
println_Msg(F("Erasing flash"));
display_Update();
// Erase flash
sendFlash29FCommand_GB(0x80);
sendFlash29FCommand_GB(0x10);
// Read the status register
byte statusReg = readByte_GB(0);
// After a completed erase D7 will output 1
while ((statusReg & 0x80) != 0x80) {
// Update Status
statusReg = readByte_GB(0);
}
// Blankcheck
println_Msg(F("Blankcheck"));
display_Update();
// Read x number of banks
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
// Set ROM bank
writeByte_GB(0x2000, currBank);
for (unsigned int currAddr = 0x4000; currAddr < 0x7FFF; currAddr += 512) {
for (int currByte = 0; currByte < 512; currByte++) {
sdBuffer[currByte] = readByte_GB(currAddr + currByte);
}
for (int j = 0; j < 512; j++) {
if (sdBuffer[j] != 0xFF) {
println_Msg(F("Not empty"));
print_FatalError(F("Erase failed"));
}
}
}
}
}
if (MBC == 3) {
if (audioWE)
println_Msg(F("Writing flash MBC30 (Audio)"));
else
println_Msg(F("Writing flash MBC3"));
display_Update();
// Write flash
word currAddr = 0;
word endAddr = 0x3FFF;
//Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)(romBanks)*16384;
draw_progressbar(0, totalProgressBar);
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
// Set ROM bank
writeByte_GB(0x2100, currBank);
if (romBanks > 128)
// Map SRAM Bank to prevent getting stuck at 0x2A8000
writeByte_GB(0x4000, 0x0);
if (currBank > 0) {
currAddr = 0x4000;
endAddr = 0x7FFF;
}
while (currAddr <= endAddr) {
myFile.read(sdBuffer, 512);
for (int currByte = 0; currByte < 512; currByte++) {
// Write command sequence
sendFlash29FCommand_GB(0xa0);
// Write current byte
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
// Set OE/RD(PH6) LOW
PORTH &= ~(1 << 6);
// Busy check
//byte count = 0;
while ((PINC & 0x80) != (sdBuffer[currByte] & 0x80)) {
/*
// Debug
count++;
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");
if (count > 250) {
println_Msg("");
print_Msg(F("Bank: "));
print_Msg(currBank);
print_Msg(F(" Addr: "));
println_Msg(currAddr + currByte);
display_Update();
wait();
}
*/
}
// Switch OE/RD(PH6) to HIGH
PORTH |= (1 << 6);
}
currAddr += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
}
else if (MBC == 5) {
println_Msg(F("Writing flash MBC5"));
display_Update();
// Write flash
//Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)(romBanks)*16384;
draw_progressbar(0, totalProgressBar);
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
// Set ROM bank
writeByte_GB(0x2000, currBank);
// 0x2A8000 fix
writeByte_GB(0x4000, 0x0);
for (unsigned int currAddr = 0x4000; currAddr < 0x7FFF; currAddr += 512) {
myFile.read(sdBuffer, 512);
for (int currByte = 0; currByte < 512; currByte++) {
// Write command sequence
sendFlash29FCommand_GB(0xa0);
// Write current byte
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
// Set OE/RD(PH6) LOW
PORTH &= ~(1 << 6);
// Busy check
while ((PINC & 0x80) != (sdBuffer[currByte] & 0x80)) {
}
// Switch OE/RD(PH6) to HIGH
PORTH |= (1 << 6);
}
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
}
print_STR(verifying_STR, 0);
display_Update();
// Go back to file beginning
myFile.seekSet(0);
//unsigned int addr = 0; // unused
writeErrors = 0;
// Verify flashrom
word romAddress = 0;
// Read number of banks and switch banks
for (word bank = 1; bank < romBanks; bank++) {
if (romType >= 5) { // MBC2 and above
writeByte_GB(0x2100, bank); // Set ROM bank
} else { // MBC1
writeByte_GB(0x6000, 0); // Set ROM Mode
writeByte_GB(0x4000, bank >> 5); // Set bits 5 & 6 (01100000) of ROM bank
writeByte_GB(0x2000, bank & 0x1F); // Set bits 0 & 4 (00011111) of ROM bank
}
if (bank > 1) {
romAddress = 0x4000;
}
// Blink led
blinkLED();
// Read up to 7FFF per bank
while (romAddress <= 0x7FFF) {
// Fill sdBuffer
myFile.read(sdBuffer, 512);
// Compare
for (int i = 0; i < 512; i++) {
if (readByte_GB(romAddress + i) != sdBuffer[i]) {
writeErrors++;
}
}
romAddress += 512;
}
}
// Close the file:
myFile.close();
if (writeErrors == 0) {
println_Msg(FS(FSTRING_OK));
display_Update();
} else {
println_Msg(F("Error"));
print_Msg(writeErrors);
print_STR(_bytes_STR, 1);
print_FatalError(did_not_verify_STR);
}
} else {
print_STR(open_file_STR, 1);
display_Update();
}
}
/******************************************
CFU flashrom functions
*****************************************/
void sendCFICommand_GB(byte cmd) {
writeByteCompensated(0xAAA, 0xaa);
writeByteCompensated(0x555, 0x55);
writeByteCompensated(0xAAA, cmd);
}
/*
Flash chips can either be in x8 mode or x16 mode and sometimes the two
least significant bits on flash cartridges' data lines are swapped.
This function reads a byte and compensates for the differences.
This is only necessary for commands to the flash, not for data read from the flash, the MBC or SRAM.
address needs to be the x8 mode address of the flash register that should be read.
*/
byte readByteCompensated(int address) {
byte data = readByte_GB(address >> (flashX16Mode ? 1 : 0));
if (flashSwitchLastBits) {
return (data & 0b11111100) | ((data << 1) & 0b10) | ((data >> 1) & 0b01);
}
return data;
}
/*
Flash chips can either be in x8 mode or x16 mode and sometimes the two
least significant bits on flash cartridges' data lines are swapped.
This function writes a byte and compensates for the differences.
This is only necessary for commands to the flash, not for data written to the flash, the MBC or SRAM.
.
address needs to be the x8 mode address of the flash register that should be read.
*/
void writeByteCompensated(int address, byte data) {
if (flashSwitchLastBits) {
data = (data & 0b11111100) | ((data << 1) & 0b10) | ((data >> 1) & 0b01);
}
writeByte_GB(address >> (flashX16Mode ? 1 : 0), data);
}
void startCFIMode(boolean x16Mode) {
if (x16Mode) {
writeByte_GB(0x555, 0xf0); //x16 mode reset command
delay(500);
writeByte_GB(0x555, 0xf0); //Double reset to get out of possible Autoselect + CFI mode
delay(500);
writeByte_GB(0x55, 0x98); //x16 CFI Query command
} else {
writeByte_GB(0xAAA, 0xf0); //x8 mode reset command
delay(100);
writeByte_GB(0xAAA, 0xf0); //Double reset to get out of possible Autoselect + CFI mode
delay(100);
writeByte_GB(0xAA, 0x98); //x8 CFI Query command
}
}
/* Identify the different flash chips.
Sets the global variables flashBanks, flashX16Mode and flashSwitchLastBits
*/
void identifyCFI_GB() {
// Reset flash
display_Clear();
writeByte_GB(0x6000, 0); // Set ROM Mode
writeByte_GB(0x2000, 0); // Set Bank to 0
writeByte_GB(0x3000, 0);
startCFIMode(false); // Trying x8 mode first
display_Clear();
// Try x8 mode first
char cfiQRYx8[7];
char cfiQRYx16[7];
sprintf(cfiQRYx8, "%02X%02X%02X", readByte_GB(0x20), readByte_GB(0x22), readByte_GB(0x24));
sprintf(cfiQRYx16, "%02X%02X%02X", readByte_GB(0x10), readByte_GB(0x11), readByte_GB(0x12)); // some devices use x8-style CFI Query command even though they are in x16 command mode
if (strcmp(cfiQRYx8, "515259") == 0) { // QRY in x8 mode
println_Msg(F("Normal CFI x8 Mode"));
flashX16Mode = false;
flashSwitchLastBits = false;
} else if (strcmp(cfiQRYx8, "52515A") == 0) { // QRY in x8 mode with switched last bit
println_Msg(F("Switched CFI x8 Mode"));
flashX16Mode = false;
flashSwitchLastBits = true;
} else if (strcmp(cfiQRYx16, "515259") == 0) { // QRY in x16 mode
println_Msg(F("Normal CFI x16 Mode"));
flashX16Mode = true;
flashSwitchLastBits = false;
} else if (strcmp(cfiQRYx16, "52515A") == 0) { // QRY in x16 mode with switched last bit
println_Msg(F("Switched CFI x16 Mode"));
flashX16Mode = true;
flashSwitchLastBits = true;
} else {
startCFIMode(true); // Try x16 mode next
sprintf(cfiQRYx16, "%02X%02X%02X", readByte_GB(0x10), readByte_GB(0x11), readByte_GB(0x12));
if (strcmp(cfiQRYx16, "515259") == 0) { // QRY in x16 mode
println_Msg(F("Normal CFI x16 Mode"));
flashX16Mode = true;
flashSwitchLastBits = false;
} else if (strcmp(cfiQRYx16, "52515A") == 0) { // QRY in x16 mode with switched last bit
println_Msg(F("Switched CFI x16 Mode"));
flashX16Mode = true;
flashSwitchLastBits = true;
} else {
println_Msg(F("CFI Query failed!"));
display_Update();
wait();
return;
}
}
flashBanks = 1 << (readByteCompensated(0x4E) - 14); // - flashX16Mode);
// Reset flash
writeByteCompensated(0xAAA, 0xf0);
delay(100);
}
// Write 29F032 flashrom
// A0-A13 directly connected to cart edge -> 16384(0x0-0x3FFF) bytes per bank -> 256(0x0-0xFF) banks
// A14-A21 connected to MBC5
// identifyFlash_GB() needs to be run before this!
bool writeCFI_GB() {
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
// Open file on sd card
if (myFile.open(filePath, O_READ)) {
// Get rom size from file
myFile.seekCur(0x147);
romType = myFile.read();
romSize = myFile.read();
// Go back to file beginning
myFile.seekSet(0);
// ROM banks
romBanks = 2;
if (romSize >= 0x01 && romSize <= 0x07) {
romBanks = int_pow(2, romSize + 1);
}
if (romBanks <= flashBanks) {
print_Msg(F("Using "));
print_Msg(romBanks);
print_Msg(F("/"));
print_Msg(flashBanks);
println_Msg(F(" Banks"));
display_Update();
} else {
println_Msg(F("Error: Flash has too few banks!"));
print_Msg(F("Has "));
print_Msg(flashBanks);
println_Msg(F(" banks,"));
print_Msg(F("but needs "));
print_Msg(romBanks);
println_Msg(F("."));
feedbackPressAndReset();
}
// Set ROM bank hi 0
writeByte_GB(0x3000, 0);
// Set ROM bank low 0
writeByte_GB(0x2000, 0);
delay(100);
// Reset flash
writeByteCompensated(0xAAA, 0xf0);
delay(100);
// Reset flash
writeByte_GB(0x555, 0xf0);
delay(100);
println_Msg(F("Erasing flash"));
display_Update();
// Erase flash
sendCFICommand_GB(0x80);
sendCFICommand_GB(0x10);
// Read the status register
byte statusReg = readByte_GB(0);
// After a completed erase D7 will output 1
while ((statusReg & 0x80) != 0x80) {
// Blink led
blinkLED();
delay(100);
// Update Status
statusReg = readByte_GB(0);
}
// Blankcheck
println_Msg(F("Blankcheck"));
display_Update();
// Read x number of banks
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
// Set ROM bank
writeByte_GB(0x2000, currBank);
for (unsigned int currAddr = 0x4000; currAddr < 0x7FFF; currAddr += 512) {
for (int currByte = 0; currByte < 512; currByte++) {
sdBuffer[currByte] = readByte_GB(currAddr + currByte);
}
for (int j = 0; j < 512; j++) {
if (sdBuffer[j] != 0xFF) {
println_Msg(F("Not empty"));
print_FatalError(F("Erase failed"));
}
}
}
}
println_Msg(F("Writing flash MBC3/5"));
display_Update();
// Write flash
word currAddr = 0;
word endAddr = 0x3FFF;
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
// Set ROM bank
writeByte_GB(0x2100, currBank);
// 0x2A8000 fix
writeByte_GB(0x4000, 0x0);
if (currBank > 0) {
currAddr = 0x4000;
endAddr = 0x7FFF;
}
while (currAddr <= endAddr) {
myFile.read(sdBuffer, 512);
for (int currByte = 0; currByte < 512; currByte++) {
// Write command sequence
sendCFICommand_GB(0xa0);
// Write current byte
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
// Setting CS(PH3) and OE/RD(PH6) LOW
PORTH &= ~((1 << 3) | (1 << 6));
// Busy check
short i = 0;
while ((PINC & 0x80) != (sdBuffer[currByte] & 0x80)) {
i++;
if (i > 500) {
if (currAddr < 0x4000) { // This happens when trying to flash an MBC5 as if it was an MBC3. Retry to flash as MBC5, starting from last successfull byte.
currByte--;
currAddr += 0x4000;
endAddr = 0x7FFF;
break;
} else { // If a timeout happens while trying to flash MBC5-style, flashing failed.
return false;
}
}
}
// Switch CS(PH3) and OE/RD(PH6) to HIGH
PORTH |= (1 << 3) | (1 << 6);
__asm__("nop\n\tnop\n\tnop\n\t"); // Waste a few CPU cycles to remove write errors
}
currAddr += 512;
}
}
display_Clear();
println_Msg(F("Verifying"));
display_Update();
// Go back to file beginning
myFile.seekSet(0);
//unsigned int addr = 0; // unused
writeErrors = 0;
// Verify flashrom
word romAddress = 0;
// Read number of banks and switch banks
for (word bank = 1; bank < romBanks; bank++) {
if (romType >= 5) { // MBC2 and above
writeByte_GB(0x2100, bank); // Set ROM bank
} else { // MBC1
writeByte_GB(0x6000, 0); // Set ROM Mode
writeByte_GB(0x4000, bank >> 5); // Set bits 5 & 6 (01100000) of ROM bank
writeByte_GB(0x2000, bank & 0x1F); // Set bits 0 & 4 (00011111) of ROM bank
}
if (bank > 1) {
romAddress = 0x4000;
}
// Blink led
blinkLED();
// Read up to 7FFF per bank
while (romAddress <= 0x7FFF) {
// Fill sdBuffer
myFile.read(sdBuffer, 512);
// Compare
for (int i = 0; i < 512; i++) {
if (readByte_GB(romAddress + i) != sdBuffer[i]) {
writeErrors++;
}
}
romAddress += 512;
}
}
// Close the file:
myFile.close();
if (writeErrors == 0) {
println_Msg(FS(FSTRING_OK));
display_Update();
} else {
print_STR(error_STR, 0);
print_Msg(writeErrors);
print_STR(_bytes_STR, 1);
print_Error(did_not_verify_STR);
}
} else {
print_STR(open_file_STR, 1);
display_Update();
}
return true;
}
#endif
/**************************************************
Pelican Gameboy Device Read Function
**************************************************/
void sendW29C020Command_GB(byte cmd) {
writeByteSRAM_GB(0xA000, 0x2);
sendW29C020CommandSufix_GB(cmd);
}
void sendW29C020CommandSufix_GB(byte cmd) {
writeByte_GB(0x3555, 0xAA);
writeByteSRAM_GB(0xA000, 0x1);
writeByte_GB(0x2AAA, 0x55);
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, cmd);
}
// Read Pelican GBC Device - All Brainboys, MonsterBrains, Codebreakers
void readPelican_GB() {
// Get name, add extension and convert to char array for sd lib
createFolderAndOpenFile("GB", "ROM", "Pelican", "GB");
word finalAddress = 0x3FFF;
word startAddress = 0x2000;
word bankAddress = 0xA000;
//Enable bank addressing in the CPLD
readByte_GB(0x100);
// W29C020 ID command sequence
sendW29C020Command_GB(0x80);
sendW29C020CommandSufix_GB(0x60);
delay(10);
// Read the two id bytes into a string
writeByteSRAM_GB(0xA000, 0x0);
flashid = readByte_GB(0) << 8;
flashid |= readByte_GB(1);
// W29C020 Flash ID Mode Exit
sendW29C020Command_GB(0xF0);
delay(100);
if (flashid == 0xDA45 || flashid == 0xBF10) {
println_Msg(F("29EE020 / W29C020"));
println_Msg(F("Banks Used: 32/64"));
print_Msg(FS(FSTRING_ROM_SIZE));
println_Msg(F("256 KB"));
romBanks = 32;
display_Update();
} else {
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0xFF);
delay(100);
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0x90);
delay(100);
flashid = readByte_GB(0) << 8;
flashid |= readByte_GB(1);
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0xFF);
delay(100);
if (flashid != 0xBF04) {
println_Msg(F("Unknown Flash ID"));
println_Msg(flashid);
print_STR(press_button_STR, 1);
display_Update();
wait();
mainMenu();
}
}
if (flashid == 0xBF04) {
println_Msg(F("SST 28LF040"));
println_Msg(F("Banks Used: 64/64"));
print_Msg(FS(FSTRING_ROM_SIZE));
println_Msg(F("512 KB"));
romBanks = 64;
display_Update();
}
// Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)(romBanks)*8192;
draw_progressbar(0, totalProgressBar);
for (size_t workBank = 0; workBank < romBanks; workBank++) { // Loop over banks
startAddress = 0x2000;
writeByteSRAM_GB(bankAddress, (workBank & 0xFF));
// Read banks and save to SD
while (startAddress <= finalAddress) {
for (int i = 0; i < 512; i++) {
sdBuffer[i] = readByte_GB(startAddress + i);
}
myFile.write(sdBuffer, 512);
startAddress += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
// Close the file:
myFile.close();
}
/******************************************
Pelican Gameboy Device Write Function
*****************************************/
void send28LF040Potection_GB(bool enable) {
writeByteSRAM_GB(0xA000, 0x0);
readByte_GB(0x3823);
readByte_GB(0x3820);
readByte_GB(0x3822);
readByte_GB(0x2418);
readByte_GB(0x241B);
readByte_GB(0x2419);
readByte_GB(enable ? 0x240A : 0x241A);
}
// Write Pelican GBC Device - All Brainboys, MonsterBrains, Codebreakers
void writePelican_GB() {
// Launch filebrowser
filePath[0] = '\0';
sd.chdir("/");
fileBrowser(FS(FSTRING_SELECT_FILE));
display_Clear();
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
// Open file on sd card
if (myFile.open(filePath, O_READ)) {
// Enable Rom Banks
readByte_GB(0x100);
delay(100);
// W29C020 ID command sequence
sendW29C020Command_GB(0x80);
sendW29C020CommandSufix_GB(0x60);
delay(10);
// Read the two id bytes into a string
writeByteSRAM_GB(0xA000, 0x0);
flashid = readByte_GB(0) << 8;
flashid |= readByte_GB(1);
// W29C020 Flash ID Mode Exit
sendW29C020Command_GB(0xF0);
delay(100);
if (flashid == 0xDA45 || flashid == 0xBF10) {
println_Msg(F("29EE020 / W29C020"));
println_Msg(F("Banks Used: 32/64"));
romBanks = 32;
display_Update();
println_Msg(F("Erasing flash..."));
display_Update();
if (flashid == 0xDA45) {
// Disable BootBlock
sendW29C020Command_GB(0x80);
sendW29C020CommandSufix_GB(0x40);
writeByteSRAM_GB(0xA000, 0x1);
writeByte_GB(0x2AAA, 0xAA);
delay(100);
}
// Erase flash
sendW29C020Command_GB(0x80);
sendW29C020CommandSufix_GB(0x10);
delay(1000);
} else {
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0xFF);
delay(100);
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0x90);
delay(100);
flashid = readByte_GB(0) << 8;
flashid |= readByte_GB(1);
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0xFF);
delay(100);
if (flashid != 0xBF04) {
println_Msg(F("Unknown Flash ID"));
println_Msg(flashid);
print_STR(press_button_STR, 1);
display_Update();
wait();
mainMenu();
}
}
if (flashid == 0xBF04) {
println_Msg(F("SST 28LF040"));
println_Msg(F("Banks Used: 64/64"));
romBanks = 64;
display_Update();
println_Msg(F("Erasing flash..."));
display_Update();
//Unprotect flash
send28LF040Potection_GB(false);
delay(100);
//Erase flash
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0x30);
writeByte_GB(0x3555, 0x30);
delay(100);
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0xFF);
delay(100);
}
// Blankcheck
println_Msg(F("Blankcheck..."));
display_Update();
// Read x number of banks
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
// Set ROM bank
writeByteSRAM_GB(0xA000, currBank);
for (word currAddr = 0x2000; currAddr < 0x4000; currAddr += 0x200) {
for (int currByte = 0; currByte < 512; currByte++) {
sdBuffer[currByte] = readByte_GB(currAddr + currByte);
}
for (int j = 0; j < 512; j++) {
if (sdBuffer[j] != 0xFF) {
println_Msg(F("Not empty"));
print_FatalError(F("Erase failed"));
}
}
}
}
}
println_Msg(F("Writing flash..."));
display_Update();
// Write flash
word currAddr = 0x2000;
word endAddr = 0x3FFF;
byte byte1;
byte byte2;
bool toggle = true;
//Unprotect flash
send28LF040Potection_GB(false);
delay(100);
//Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)(romBanks)*8192;
draw_progressbar(0, totalProgressBar);
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
currAddr = 0x2000;
if (flashid == 0xDA45 || flashid == 0xBF10) {
while (currAddr <= endAddr) {
myFile.read(sdBuffer, 128);
// Write command sequence
sendW29C020Command_GB(0xA0);
// Set ROM bank
writeByteSRAM_GB(0xA000, currBank);
for (int currByte = 0; currByte < 128; currByte++) {
// Write current byte
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
}
currAddr += 128;
processedProgressBar += 128;
draw_progressbar(processedProgressBar, totalProgressBar);
delay(10);
}
}
if (flashid == 0xBF04) {
while (currAddr <= endAddr) {
myFile.read(sdBuffer, 512);
for (int currByte = 0; currByte < 512; currByte++) {
toggle = true;
// Write current byte
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0x10);
writeByteSRAM_GB(0xA000, currBank);
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
while (toggle) {
byte1 = readByte_GB(currAddr + currByte);
byte2 = readByte_GB(currAddr + currByte);
toggle = isToggle(byte1, byte2);
}
byte1 = readByte_GB(currAddr + currByte);
if (byte1 != sdBuffer[currByte]) {
writeByteSRAM_GB(0xA000, 0x2);
writeByte_GB(0x3555, 0x10);
writeByteSRAM_GB(0xA000, currBank);
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
while (toggle) {
byte1 = readByte_GB(currAddr + currByte);
byte2 = readByte_GB(currAddr + currByte);
toggle = isToggle(byte1, byte2);
}
}
}
currAddr += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
}
if (flashid == 0xBF04) {
//Protect flash
send28LF040Potection_GB(true);
delay(100);
}
display_Clear();
print_STR(verifying_STR, 0);
display_Update();
// Go back to file beginning
myFile.seekSet(0);
//unsigned int addr = 0; // unused
writeErrors = 0;
// Verify flashrom
word romAddress = 0x2000;
// Read number of banks and switch banks
for (word bank = 0; bank < romBanks; bank++) {
writeByteSRAM_GB(0xA000, bank); // Set ROM bank
romAddress = 0x2000;
// Blink led
blinkLED();
// Read up to 3FFF per bank
while (romAddress < 0x4000) {
// Fill sdBuffer
myFile.read(sdBuffer, 512);
// Compare
for (int i = 0; i < 512; i++) {
if (readByte_GB(romAddress + i) != sdBuffer[i]) {
writeErrors++;
}
}
romAddress += 512;
}
}
// Close the file:
myFile.close();
if (writeErrors == 0) {
println_Msg(FS(FSTRING_OK));
println_Msg(F("Please turn off the power."));
display_Update();
} else {
println_Msg(F("Error"));
print_Msg(writeErrors);
print_STR(_bytes_STR, 1);
print_FatalError(did_not_verify_STR);
}
}
bool isToggle(byte byte1, byte byte2) {
// XOR the two bytes to get the bits that are different
byte difference = byte1 ^ byte2;
difference = difference & 0b00100000;
// Check if only the 6th bit is different
return difference == 0b00100000;
}
/******************************************************
Datel Mega Memory Card Gameboy Device Read Function
******************************************************/
// Read Mega Memory Card Rom and Save Backup Data
void readMegaMem_GB() {
// Dump the Rom
createFolder("GB", "ROM", "MegaMem", "GB");
display_Clear();
print_STR(saving_to_STR, 0);
print_Msg(folder);
println_Msg(F("/..."));
println_Msg(F("Rom.GB"));
display_Update();
//open file on sd card
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
print_FatalError(create_file_STR);
}
word finalAddress = 0x3FFF;
word startAddress = 0x0;
// Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)16384;
draw_progressbar(0, totalProgressBar);
// Read banks and save to SD
while (startAddress <= finalAddress) {
for (int i = 0; i < 512; i++) {
sdBuffer[i] = readByte_GB(startAddress + i);
}
myFile.write(sdBuffer, 512);
startAddress += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
// Close the file:
myFile.close();
// Dump the Save Data SST28LF040
strcpy(fileName, "SaveData");
strcat(fileName, ".bin");
display_Clear();
print_STR(saving_to_STR, 0);
print_Msg(folder);
println_Msg(F("/..."));
println_Msg(F("SaveData.bin"));
display_Update();
// write new folder number back to eeprom
foldern = foldern + 1;
EEPROM_writeAnything(0, foldern);
//open file on sd card
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
print_FatalError(create_file_STR);
}
finalAddress = 0x7FFF;
startAddress = 0x4000;
word bankAddress = 0x2000;
romBanks = 32;
// Initialize progress bar
processedProgressBar = 0;
totalProgressBar = (uint32_t)(romBanks)*8192;
draw_progressbar(0, totalProgressBar);
for (size_t workBank = 0; workBank < romBanks; workBank++) { // Loop over banks
startAddress = 0x4000;
writeByte_GB(bankAddress, (workBank & 0xFF));
// Read banks and save to SD
while (startAddress <= finalAddress) {
for (int i = 0; i < 512; i++) {
sdBuffer[i] = readByte_GB(startAddress + i);
}
myFile.write(sdBuffer, 512);
startAddress += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
// Close the file:
myFile.close();
}
/*******************************************************
Datel Mega Memory Card Gameboy Device Write Function
*******************************************************/
// Read Mega Memory Card Rom and Save Backup Data
void writeMegaMem_GB() {
// Write Datel Mega Memory Card Save Storage Chip SST28LF040
filePath[0] = '\0';
sd.chdir("/");
fileBrowser(FS(FSTRING_SELECT_FILE));
display_Clear();
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
// Open file on sd card
if (myFile.open(filePath, O_READ)) {
writeByte_GB(0x2000, 0x1);
writeByte_GB(0x5555, 0xFF);
delay(100);
writeByte_GB(0x2000, 0x1);
writeByte_GB(0x5555, 0x90);
delay(100);
writeByte_GB(0x2000, 0x0);
flashid = readByte_GB(0x4000) << 8;
flashid |= readByte_GB(0x4001);
writeByte_GB(0x2000, 0x1);
writeByte_GB(0x5555, 0xFF);
delay(100);
if (flashid != 0xBF04) {
println_Msg(F("Unknown Flash ID"));
println_Msg(flashid);
print_STR(press_button_STR, 1);
display_Update();
wait();
mainMenu();
}
}
if (flashid == 0xBF04) {
println_Msg(F("SST 28LF040"));
romBanks = 32;
display_Update();
println_Msg(F("Erasing flash..."));
display_Update();
//Unprotect flash
writeByte_GB(0x2000, 0x0);
readByte_GB(0x5823);
readByte_GB(0x5820);
readByte_GB(0x5822);
readByte_GB(0x4418);
readByte_GB(0x441B);
readByte_GB(0x4419);
readByte_GB(0x441A);
delay(100);
//Erase flash
writeByte_GB(0x2000, 0x1);
writeByte_GB(0x5555, 0x30);
writeByte_GB(0x5555, 0x30);
delay(100);
writeByte_GB(0x2000, 0x1);
writeByte_GB(0x5555, 0xFF);
delay(100);
}
// Blankcheck
println_Msg(F("Blankcheck..."));
display_Update();
// Read x number of banks
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
// Set ROM bank
writeByte_GB(0x2000, currBank);
for (word currAddr = 0x4000; currAddr < 0x8000; currAddr += 0x200) {
for (int currByte = 0; currByte < 512; currByte++) {
sdBuffer[currByte] = readByte_GB(currAddr + currByte);
}
for (int j = 0; j < 512; j++) {
if (sdBuffer[j] != 0xFF) {
println_Msg(F("Not empty"));
print_FatalError(F("Erase failed"));
}
}
}
}
println_Msg(F("Writing flash..."));
display_Update();
// Write flash
word currAddr = 0x4000;
word endAddr = 0x7FFF;
byte byte1;
byte byte2;
bool toggle = true;
//Unprotect flash
writeByte_GB(0x2000, 0x0);
readByte_GB(0x5823);
readByte_GB(0x5820);
readByte_GB(0x5822);
readByte_GB(0x4418);
readByte_GB(0x441B);
readByte_GB(0x4419);
readByte_GB(0x441A);
delay(100);
//Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)(romBanks)*8192;
draw_progressbar(0, totalProgressBar);
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
currAddr = 0x4000;
if (flashid == 0xBF04) {
while (currAddr <= endAddr) {
myFile.read(sdBuffer, 512);
for (int currByte = 0; currByte < 512; currByte++) {
toggle = true;
// Write current byte
writeByte_GB(0x2000, 0x1);
writeByte_GB(0x5555, 0x10);
writeByte_GB(0x2000, currBank);
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
while (toggle) {
byte1 = readByte_GB(currAddr + currByte);
byte2 = readByte_GB(currAddr + currByte);
toggle = isToggle(byte1, byte2);
}
byte1 = readByte_GB(currAddr + currByte);
if (byte1 != sdBuffer[currByte]) {
writeByte_GB(0x2000, 0x1);
writeByte_GB(0x5555, 0x10);
writeByte_GB(0x2000, currBank);
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
while (toggle) {
byte1 = readByte_GB(currAddr + currByte);
byte2 = readByte_GB(currAddr + currByte);
toggle = isToggle(byte1, byte2);
}
}
}
currAddr += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
}
if (flashid == 0xBF04) {
//Protect flash
writeByte_GB(0x2000, 0x0);
readByte_GB(0x5823);
readByte_GB(0x5820);
readByte_GB(0x5822);
readByte_GB(0x4418);
readByte_GB(0x441B);
readByte_GB(0x4419);
readByte_GB(0x440A);
delay(100);
}
display_Clear();
print_STR(verifying_STR, 0);
display_Update();
// Go back to file beginning
myFile.seekSet(0);
//unsigned int addr = 0; // unused
writeErrors = 0;
// Verify flashrom
word romAddress = 0x4000;
// Read number of banks and switch banks
for (word bank = 0; bank < romBanks; bank++) {
writeByte_GB(0x2000, bank); // Set ROM bank
romAddress = 0x4000;
// Blink led
blinkLED();
// Read up to 3FFF per bank
while (romAddress < 0x8000) {
// Fill sdBuffer
myFile.read(sdBuffer, 512);
// Compare
for (int i = 0; i < 512; i++) {
if (readByte_GB(romAddress + i) != sdBuffer[i]) {
writeErrors++;
}
}
romAddress += 512;
}
}
// Close the file:
myFile.close();
if (writeErrors == 0) {
println_Msg(FS(FSTRING_OK));
println_Msg(F("Please turn off the power."));
display_Update();
} else {
println_Msg(F("Error"));
print_Msg(writeErrors);
print_STR(_bytes_STR, 1);
print_FatalError(did_not_verify_STR);
}
}
/***************************************************
Datel GBC Gameshark Gameboy Device Read Function
***************************************************/
void sendGamesharkCommand_GB(byte cmd) {
writeByte_GB(0x7FE1, 0x2);
writeByte_GB(0x5555, 0xAA);
writeByte_GB(0x7FE1, 0x1);
writeByte_GB(0x4AAA, 0x55);
writeByte_GB(0x7FE1, 0x2);
writeByte_GB(0x5555, cmd);
}
// Read Datel GBC Gameshark Device
void readGameshark_GB() {
word finalAddress = 0x5FFF;
word startAddress = 0x4000;
romBanks = 16;
//Enable bank addressing in the CPLD
readByte_GB(0x101);
readByte_GB(0x108);
readByte_GB(0x101);
// SST 39SF010 ID command sequence
sendGamesharkCommand_GB(0x90);
delay(10);
// Read the two id bytes into a string
writeByte_GB(0x7FE1, 0x0);
flashid = readByte_GB(0x4000) << 8;
flashid |= readByte_GB(0x4001);
// SST 39SF010 Flash ID Mode Exit
sendGamesharkCommand_GB(0xF0);
delay(100);
if (flashid == 0xBFB5) {
display_Clear();
println_Msg(F("SST 39SF010"));
print_Msg(FS(FSTRING_ROM_SIZE));
println_Msg(F("128 KB"));
display_Update();
} else {
display_Clear();
println_Msg(F("Unknown Flash ID"));
println_Msg(F("Check Cartridge Connection"));
print_STR(press_button_STR, 1);
display_Update();
wait();
mainMenu();
}
// Get name, add extension and convert to char array for sd lib
createFolder("GB", "ROM", "Gameshark", "GB");
printAndIncrementFolder();
//open file on sd card
if (!myFile.open(fileName, O_RDWR | O_CREAT)) {
print_FatalError(create_file_STR);
}
// Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)(romBanks)*8192;
draw_progressbar(0, totalProgressBar);
for (size_t workBank = 0; workBank < romBanks; workBank++) { // Loop over banks
startAddress = 0x4000;
writeByte_GB(0x7FE1, (workBank & 0xFF));
// Read banks and save to SD
while (startAddress <= finalAddress) {
for (int i = 0; i < 512; i++) {
sdBuffer[i] = readByte_GB(startAddress + i);
}
myFile.write(sdBuffer, 512);
startAddress += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
// Close the file:
myFile.close();
}
/****************************************************
Datel GBC Gameshark Gameboy Device Write Function
****************************************************/
// Write Datel GBC Gameshark Device
void writeGameshark_GB() {
// Enable Rom Banks
readByte_GB(0x101);
readByte_GB(0x108);
readByte_GB(0x101);
delay(100);
// SST 39SF010 ID command sequence
sendGamesharkCommand_GB(0x90);
delay(10);
// Read the two id bytes into a string
writeByte_GB(0x7FE1, 0x0);
flashid = readByte_GB(0x4000) << 8;
flashid |= readByte_GB(0x4001);
// SST 39SF010 Flash ID Mode Exit
sendGamesharkCommand_GB(0xF0);
if (flashid != 0xBFB5) {
display_Clear();
println_Msg(F("Unknown Flash ID"));
println_Msg(F("Check Cartridge Connection"));
print_STR(press_button_STR, 1);
display_Update();
wait();
mainMenu();
}
// Launch filebrowser
filePath[0] = '\0';
sd.chdir("/");
fileBrowser(FS(FSTRING_SELECT_FILE));
display_Clear();
byte byte1;
bool toggle = true;
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
// Open file on sd card
myFile.open(filePath, O_READ);
if (flashid == 0xBFB5) {
println_Msg(F("SST 39SF010"));
romBanks = 16;
display_Update();
println_Msg(F("Erasing flash..."));
display_Update();
//Erase flash
sendGamesharkCommand_GB(0x80);
sendGamesharkCommand_GB(0x10);
delay(100);
}
// Blankcheck
println_Msg(F("Blankcheck..."));
display_Update();
// Read x number of banks
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
// Set ROM bank
writeByte_GB(0x7FE1, currBank);
for (word currAddr = 0x4000; currAddr < 0x6000; currAddr += 0x200) {
for (int currByte = 0; currByte < 512; currByte++) {
sdBuffer[currByte] = readByte_GB(currAddr + currByte);
}
for (int j = 0; j < 512; j++) {
if (sdBuffer[j] != 0xFF) {
println_Msg(F("Not empty"));
print_FatalError(F("Erase failed"));
}
}
}
}
println_Msg(F("Writing flash..."));
display_Update();
// Write flash
word currAddr = 0x4000;
word endAddr = 0x5FFF;
//Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)(romBanks)*8192;
draw_progressbar(0, totalProgressBar);
for (word currBank = 0; currBank < romBanks; currBank++) {
// Blink led
blinkLED();
currAddr = 0x4000;
while (currAddr <= endAddr) {
myFile.read(sdBuffer, 512);
for (int currByte = 0; currByte < 512; currByte++) {
// Write command sequence
sendGamesharkCommand_GB(0xA0);
// Set ROM bank
writeByte_GB(0x7FE1, currBank);
toggle = true;
// Write current byte
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
while (toggle) {
byte1 = readByte_GB(currAddr + currByte);
if (byte1 == sdBuffer[currByte]) {
toggle = false;
}
}
}
currAddr += 512;
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}
display_Clear();
print_STR(verifying_STR, 0);
display_Update();
// Go back to file beginning
myFile.seekSet(0);
//unsigned int addr = 0; // unused
writeErrors = 0;
// Verify flashrom
word romAddress = 0x4000;
// Read number of banks and switch banks
for (word bank = 0; bank < romBanks; bank++) {
writeByte_GB(0x7FE1, bank); // Set ROM bank
romAddress = 0x4000;
// Blink led
blinkLED();
// Read up to 1FFF per bank
while (romAddress < 0x6000) {
// Fill sdBuffer
myFile.read(sdBuffer, 512);
// Compare
for (int i = 0; i < 512; i++) {
if (readByte_GB(romAddress + i) != sdBuffer[i]) {
writeErrors++;
}
}
romAddress += 512;
}
}
// Close the file:
myFile.close();
if (writeErrors == 0) {
println_Msg(FS(FSTRING_OK));
println_Msg(F("Please turn off the power."));
display_Update();
} else {
println_Msg(F("Error"));
print_Msg(writeErrors);
print_STR(_bytes_STR, 1);
print_FatalError(did_not_verify_STR);
}
}
#endif
//******************************************
// End of File
//******************************************
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