V21 Updated GB code to insidegadgets newest version

Known bug: When writing a 4MB Game Boy flashcart you can't write anything to offset 0x2A8000. So you get one byte error at the end.
I don't know why.
This commit is contained in:
sanni 2017-01-30 15:49:04 +01:00 committed by GitHub
parent 6bcdc9526c
commit 6a9099be8c
2 changed files with 294 additions and 332 deletions

View File

@ -2,8 +2,8 @@
Cartridge Reader for Arduino Mega2560
Author: sanni
Date: 2017-01-29
Version: V20
Date: 2017-01-30
Version: V21
SD lib: https://github.com/greiman/SdFat
LCD lib: https://github.com/adafruit/Adafruit_SSD1306
@ -34,7 +34,7 @@
YamaArashi - GBA flashrom bank switch command
**********************************************************************************/
char ver[5] = "V20";
char ver[5] = "V21";
/******************************************
Define Output

View File

@ -7,6 +7,8 @@
*****************************************/
// Game Boy
int sramBanks;
int romBanks;
uint16_t sramEndAddress = 0;
/******************************************
Menu
@ -15,14 +17,11 @@ int sramBanks;
const char GBMenuItem1[] PROGMEM = "Read Rom";
const char GBMenuItem2[] PROGMEM = "Read Save";
const char GBMenuItem3[] PROGMEM = "Write Save";
const char GBMenuItem4[] PROGMEM = "Write Flash";
const char GBMenuItem4[] PROGMEM = "Write Flashcart";
const char GBMenuItem5[] PROGMEM = "Reset";
const char* const menuOptionsGB[] PROGMEM = {GBMenuItem1, GBMenuItem2, GBMenuItem3, GBMenuItem4, GBMenuItem5};
void gbMenu() {
// Output a high signal on CS(PH3) WR(PH5) RD(PH6)
PORTH |= (1 << 3) | (1 << 5) | (1 << 6);
// create menu with title and 5 options to choose from
unsigned char mainMenu;
// Copy menuOptions out of progmem
@ -42,27 +41,39 @@ void gbMenu() {
case 1:
display_Clear();
// Change working dir to root
sd.chdir("/");
readSRAM_GB();
// Does cartridge have SRAM
if (sramEndAddress > 0) {
// Change working dir to root
sd.chdir("/");
readSRAM_GB();
}
else {
print_Error(F("Cart has no Sram"), false);
}
break;
case 2:
display_Clear();
// Change working dir to root
sd.chdir("/");
writeSRAM_GB();
unsigned long wrErrors;
wrErrors = verifySRAM_GB();
if (wrErrors == 0) {
println_Msg(F("Verified OK"));
display_Update();
// Does cartridge have SRAM
if (sramEndAddress > 0) {
// Change working dir to root
sd.chdir("/");
writeSRAM_GB();
unsigned long wrErrors;
wrErrors = verifySRAM_GB();
if (wrErrors == 0) {
println_Msg(F("Verified OK"));
display_Update();
}
else {
print_Msg(F("Error: "));
print_Msg(wrErrors);
println_Msg(F(" bytes "));
print_Error(F("did not verify."), false);
}
}
else {
print_Msg(F("Error: "));
print_Msg(wrErrors);
println_Msg(F(" bytes "));
print_Error(F("did not verify."), false);
print_Error(F("Cart has no Sram"), false);
}
break;
@ -70,6 +81,9 @@ void gbMenu() {
// Change working dir to root
sd.chdir("/");
writeFlash_GB();
// Reset
wait();
asm volatile (" jmp 0");
break;
case 4:
@ -105,7 +119,9 @@ void setup_GB() {
// Set Data Pins (D0-D7) to Input
DDRC = 0x00;
// Disable Internal Pullups
PORTC = 0x00;
//PORTC = 0x00;
delay(400);
// Print start page
getCartInfo_GB();
@ -147,80 +163,52 @@ void setup_GB() {
println_Msg(F(" "));
print_Msg(F("Rom Size: "));
switch (romSize) {
case 0:
print_Msg(F("32KByte"));
break;
case 1:
print_Msg(F("64KByte"));
break;
case 2:
print_Msg(F("128KByte"));
break;
case 3:
print_Msg(F("256KByte"));
break;
case 4:
print_Msg(F("512KByte"));
break;
case 0: print_Msg(F("32KB")); break;
case 1: print_Msg(F("64KB")); break;
case 2: print_Msg(F("128KB")); break;
case 3: print_Msg(F("256KB")); break;
case 4: print_Msg(F("512KB")); break;
case 5:
if (romType == 1 || romType == 2 || romType == 3) {
print_Msg(F("1MByte"));
print_Msg(F("1MB"));
}
else {
print_Msg(F("1MByte"));
print_Msg(F("1MB"));
}
break;
case 6:
if (romType == 1 || romType == 2 || romType == 3) {
print_Msg(F("2MByte"));
print_Msg(F("2MB"));
}
else {
print_Msg(F("2MByte"));
print_Msg(F("2MB"));
}
break;
case 7:
print_Msg(F("4MByte"));
break;
case 82:
print_Msg(F("1.1MByten"));
break;
case 83:
print_Msg(F("1.2MByte"));
break;
case 84:
print_Msg(F("1.5MByte"));
break;
default:
print_Msg(F("Not found"));
case 7: print_Msg(F("4MB")); break;
case 82: print_Msg(F("1.1MB")); break;
case 83: print_Msg(F("1.2MB")); break;
case 84: print_Msg(F("1.5MB)")); break;
default: print_Msg(F("Not found"));
}
println_Msg(F(""));
print_Msg(F("Banks: "));
println_Msg(numBanks);
println_Msg(romBanks);
print_Msg(F("Sram Size: "));
switch (sramSize) {
case 0:
if (romType == 6) {
print_Msg(F("512 bytes"));
print_Msg(F("512B"));
}
else {
print_Msg(F("None"));
}
break;
case 1:
print_Msg(F("2 KBytes"));
break;
case 2:
print_Msg(F("8 KBytes"));
break;
case 3:
print_Msg(F("32 KBytes"));
break;
case 4:
print_Msg(F("128 KBytes"));
break;
default:
print_Msg(F("Not found"));
case 1: print_Msg(F("2KB")); break;
case 2: print_Msg(F("8KB")); break;
case 3: print_Msg(F("32KB")); break;
case 4: print_Msg(F("128KB")); break;
default: print_Msg(F("Not found"));
}
println_Msg(F(""));
print_Msg(F("Checksum: "));
@ -299,6 +287,48 @@ void writeByte_GB(int myAddress, uint8_t myData) {
*****************************************/
// Read Cartridge Header
void getCartInfo_GB() {
romType = readByte_GB(0x0147);
romSize = readByte_GB(0x0148);
sramSize = readByte_GB(0x0149);
// ROM banks
romBanks = 2; // Default 32K
if (romSize >= 1) { // Calculate rom size
romBanks = 2 << romSize;
}
// RAM banks
sramBanks = 0; // Default 0K RAM
if (romType == 6) {
sramBanks = 1;
}
if (sramSize == 2) {
sramBanks = 1;
}
if (sramSize == 3) {
sramBanks = 4;
}
if (sramSize == 4) {
sramBanks = 16;
}
if (sramSize == 5) {
sramBanks = 8;
}
// RAM end address
if (romType == 6) {
sramEndAddress = 0xA1FF; // MBC2 512bytes (nibbles)
}
if (sramSize == 1) {
sramEndAddress = 0xA7FF; // 2K RAM
}
if (sramSize > 1) {
sramEndAddress = 0xBFFF; // 8K RAM
}
// Get Checksum as string
sprintf(checksumStr, "%02X%02X", readByte_GB(0x014E), readByte_GB(0x014F));
// Dump name into 8.3 compatible format
byte myByte = 0;
byte myLength = 0;
@ -310,55 +340,6 @@ void getCartInfo_GB() {
myLength++;
}
}
// Get Checksum as string
sprintf(checksumStr, "%02X%02X", readByte_GB(0x014E), readByte_GB(0x014F));
romType = readByte_GB(0x0147);
romSize = readByte_GB(0x0148);
sramSize = readByte_GB(0x0149);
numBanks = 2; // Default 32K
if (romSize == 1) {
numBanks = 4;
}
if (romSize == 2) {
numBanks = 8;
}
if (romSize == 3) {
numBanks = 16;
}
if (romSize == 4) {
numBanks = 32;
}
if (romSize == 5 && (romType == 1 || romType == 2 || romType == 3)) {
numBanks = 63;
}
else if (romSize == 5) {
numBanks = 64;
}
if (romSize == 6 && (romType == 1 || romType == 2 || romType == 3)) {
numBanks = 125;
}
else if (romSize == 6) {
numBanks = 128;
}
if (romSize == 7) {
numBanks = 255;
}
if (romSize == 82) {
numBanks = 72;
}
if (romSize == 83) {
numBanks = 80;
}
if (romSize == 84) {
numBanks = 96;
}
sramBanks = 1; // Default 8K RAM
if (sramSize == 3) {
sramBanks = 4;
}
if (sramSize == 4) {
sramBanks = 16; // GB Camera
}
}
// Dump ROM
@ -389,25 +370,40 @@ void readROM_GB() {
print_Error(F("Can't create file on SD"), true);
}
unsigned int addr = 0;
uint16_t romAddress = 0;
// Read x number of banks
for (int y = 1; y < numBanks; y++) {
// Read number of banks and switch banks
for (uint16_t bank = 1; bank < romBanks; bank++) {
// Switch data pins to output
dataOut();
// Set ROM bank
writeByte_GB(0x2100, y);
dataIn_GB();
if (y > 1) {
addr = 0x4000;
if (romType >= 5) { // MBC2 and above
writeByte_GB(0x2100, bank); // Set ROM bank
}
for (; addr <= 0x7FFF; addr = addr + 512) {
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
}
// Switch data pins to intput
dataIn_GB();
if (bank > 1) {
romAddress = 0x4000;
}
// Read up to 7FFF per bank
while (romAddress <= 0x7FFF) {
uint8_t readData[512];
for (int i = 0; i < 512; i++) {
readData[i] = readByte_GB(addr + i);
readData[i] = readByte_GB(romAddress + i);
}
myFile.write(readData, 512);
romAddress += 512;
}
}
// Close the file:
myFile.close();
@ -483,155 +479,144 @@ boolean compare_checksum_GB() {
// Read RAM
void readSRAM_GB() {
// Get name, add extension and convert to char array for sd lib
char fileName[26];
strcpy(fileName, romName);
strcat(fileName, ".sav");
// create a new folder for the save file
EEPROM_readAnything(0, foldern);
sprintf(folder, "SAVE/%s/%d", romName, foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
// 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_Error(F("SD Error"), true);
}
// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?)
readByte_GB(0x0134);
unsigned int addr = 0;
unsigned int endaddr = 0;
if (romType == 6 && sramSize == 0) {
endaddr = 0xA1FF; // MBC2 512bytes (nibbles)
}
if (sramSize == 1) {
endaddr = 0xA7FF; // 2K RAM
}
if (sramSize > 1) {
endaddr = 0xBFFF; // 8K RAM
}
// Does cartridge have RAM
if (endaddr > 0) {
if (sramEndAddress > 0) {
// Get name, add extension and convert to char array for sd lib
char fileName[26];
strcpy(fileName, romName);
strcat(fileName, ".sav");
// create a new folder for the save file
EEPROM_readAnything(0, foldern);
sprintf(folder, "SAVE/%s/%d", romName, foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
// 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_Error(F("SD Error"), true);
}
dataIn_GB();
// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?)
readByte_GB(0x0134);
dataOut();
if (romType <= 4) { // MBC1
writeByte_GB(0x6000, 1); // Set RAM Mode
}
// Initialise MBC
writeByte_GB(0x0000, 0x0A);
// Switch RAM banks
for (int bank = 0; bank < sramBanks; bank++) {
// Switch SRAM banks
for (uint8_t bank = 0; bank < sramBanks; bank++) {
dataOut();
writeByte_GB(0x4000, bank);
// Read RAM
// Read SRAM
dataIn_GB();
for (addr = 0xA000; addr <= endaddr; addr = addr + 64) {
for (uint16_t sramAddress = 0xA000; sramAddress <= sramEndAddress; sramAddress += 64) {
uint8_t readData[64];
for (int i = 0; i < 64; i++) {
readData[i] = readByte_GB(addr + i);
for (uint8_t i = 0; i < 64; i++) {
readData[i] = readByte_GB(sramAddress + i);
}
myFile.write(readData, 64);
}
}
// Disable SRAM
dataOut();
// Disable RAM
writeByte_GB(0x0000, 0x00);
dataIn_GB();
}
else {
print_Error(F("Cart has no SRAM"), false);
}
// Close the file:
myFile.close();
// Signal end of process
print_Msg(F("Saved to SAVE/"));
print_Msg(romName);
print_Msg(F("/"));
print_Msg(foldern - 1);
print_Msg(F("/"));
println_Msg(fileName);
display_Update();
}
// Write RAM
void writeSRAM_GB() {
filePath[0] = '\0';
sd.chdir("/");
fileBrowser("Select sav file");
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
//open file on sd card
if (myFile.open(filePath, O_READ)) {
// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?)
readByte_GB(0x0134);
unsigned int addr = 0;
unsigned int endaddr = 0;
if (romType == 6 && sramSize == 0) {
endaddr = 0xA1FF; // MBC2 512bytes (nibbles)
}
if (sramSize == 1) {
endaddr = 0xA7FF; // 2K RAM
}
if (sramSize > 1) {
endaddr = 0xBFFF; // 8K RAM
}
// Does cartridge have RAM
if (endaddr > 0) {
dataOut();
// Initialise MBC
writeByte_GB(0x0000, 0x0A);
// Switch RAM banks
for (int bank = 0; bank < sramBanks; bank++) {
writeByte_GB(0x4000, bank);
// Write RAM
for (addr = 0xA000; addr <= endaddr; addr = addr + 64) {
// Wait for serial input
for (uint8_t i = 0; i < 64; i++) {
// Pull CS(PH3) LOW
PORTH &= ~(1 << 3);
// Write to RAM
writeByte_GB(addr + i, myFile.read());
asm volatile("nop");
asm volatile("nop");
asm volatile("nop");
// Pull CS(PH3) HIGH
PORTH |= (1 << 3) ;
}
}
}
// Disable RAM
writeByte_GB(0x0000, 0x00);
Serial.flush(); // Flush any serial data that wasn't processed
}
else {
print_Error(F("Cart has no SRAM"), false);
}
// Set pins to input
dataIn_GB();
// Close the file:
myFile.close();
display_Clear();
println_Msg(F("SRAM writing finished"));
// Signal end of process
print_Msg(F("Saved to SAVE/"));
print_Msg(romName);
print_Msg(F("/"));
print_Msg(foldern - 1);
print_Msg(F("/"));
println_Msg(fileName);
display_Update();
}
else {
print_Error(F("File doesnt exist"), false);
print_Error(F("Cart has no SRAM"), false);
}
}
// Write RAM
void writeSRAM_GB() {
// Does cartridge have SRAM
if (sramEndAddress > 0) {
filePath[0] = '\0';
sd.chdir("/");
fileBrowser("Select sav file");
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
//open file on sd card
if (myFile.open(filePath, O_READ)) {
// Set pins to input
dataIn_GB();
// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?)
readByte_GB(0x0134);
dataOut();
if (romType <= 4) { // MBC1
writeByte_GB(0x6000, 1); // Set RAM Mode
}
// Initialise MBC
writeByte_GB(0x0000, 0x0A);
// Switch RAM banks
for (uint8_t bank = 0; bank < sramBanks; bank++) {
writeByte_GB(0x4000, bank);
// Write RAM
for (uint16_t sramAddress = 0xA000; sramAddress <= sramEndAddress; sramAddress++) {
// Pull CS(PH3) LOW
PORTH &= ~(1 << 3);
// Write to RAM
writeByte_GB(sramAddress, myFile.read());
asm volatile("nop");
asm volatile("nop");
asm volatile("nop");
// Pull CS(PH3) HIGH
PORTH |= (1 << 3) ;
}
}
// Disable RAM
writeByte_GB(0x0000, 0x00);
// Set pins to input
dataIn_GB();
// Close the file:
myFile.close();
display_Clear();
println_Msg(F("SRAM writing finished"));
display_Update();
}
else {
print_Error(F("File doesnt exist"), false);
}
}
else {
print_Error(F("Cart has no SRAM"), false);
}
}
@ -644,39 +629,33 @@ unsigned long verifySRAM_GB() {
// Variable for errors
writeErrors = 0;
dataIn_GB();
// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?)
readByte_GB(0x0134);
unsigned int addr = 0;
unsigned int endaddr = 0;
if (romType == 6 && sramSize == 0) {
endaddr = 0xA1FF; // MBC2 512bytes (nibbles)
}
if (sramSize == 1) {
endaddr = 0xA7FF; // 2K RAM
}
if (sramSize > 1) {
endaddr = 0xBFFF; // 8K RAM
}
// Does cartridge have RAM
if (endaddr > 0) {
if (sramEndAddress > 0) {
dataOut();
if (romType <= 4) { // MBC1
writeByte_GB(0x6000, 1); // Set RAM Mode
}
// Initialise MBC
writeByte_GB(0x0000, 0x0A);
// Switch RAM banks
for (int bank = 0; bank < sramBanks; bank++) {
// Switch SRAM banks
for (uint8_t bank = 0; bank < sramBanks; bank++) {
dataOut();
writeByte_GB(0x4000, bank);
// Read RAM
// Read SRAM
dataIn_GB();
for (addr = 0xA000; addr <= endaddr; addr = addr + 64) {
for (uint16_t sramAddress = 0xA000; sramAddress <= sramEndAddress; sramAddress += 64) {
//fill sdBuffer
myFile.read(sdBuffer, 64);
for (int c = 0; c < 64; c++) {
if (readByte_GB(addr + c) != sdBuffer[c]) {
if (readByte_GB(sramAddress + c) != sdBuffer[c]) {
writeErrors++;
}
}
@ -696,12 +675,6 @@ unsigned long verifySRAM_GB() {
}
}
/* Switch rom bank
void switchRomBank(word romBank) {
writeByte_GB(0x3000, romBank >> 8);
writeByte_GB(0x2000, romBank & 0xFFu);
}*/
// 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
@ -724,42 +697,10 @@ void writeFlash_GB() {
// Go back to file beginning
myFile.seekSet(0);
numBanks = 2; // Default 32K
if (romSize == 1) {
numBanks = 4;
}
if (romSize == 2) {
numBanks = 8;
}
if (romSize == 3) {
numBanks = 16;
}
if (romSize == 4) {
numBanks = 32;
}
if (romSize == 5 && (romType == 1 || romType == 2 || romType == 3)) {
numBanks = 63;
}
else if (romSize == 5) {
numBanks = 64;
}
if (romSize == 6 && (romType == 1 || romType == 2 || romType == 3)) {
numBanks = 125;
}
else if (romSize == 6) {
numBanks = 128;
}
if (romSize == 7) {
numBanks = 255;
}
if (romSize == 82) {
numBanks = 72;
}
if (romSize == 83) {
numBanks = 80;
}
if (romSize == 84) {
numBanks = 96;
// ROM banks
romBanks = 2; // Default 32K
if (romSize >= 1) { // Calculate rom size
romBanks = 2 << romSize;
}
// Set data pins to output
@ -788,21 +729,21 @@ void writeFlash_GB() {
if (strcmp(flashid, "04D4") == 0) {
println_Msg(F("MBM29F033C"));
print_Msg(F("Banks: "));
print_Msg(numBanks);
println_Msg(F("/255"));
print_Msg(romBanks);
println_Msg(F("/256"));
display_Update();
}
else if (strcmp(flashid, "0141") == 0) {
println_Msg(F("AM29F032B"));
print_Msg(F("Banks: "));
print_Msg(numBanks);
print_Msg(romBanks);
println_Msg(F("/256"));
display_Update();
}
else if (strcmp(flashid, "01AD") == 0) {
println_Msg(F("AM29F016B"));
print_Msg(F("Banks: "));
print_Msg(numBanks);
print_Msg(romBanks);
println_Msg(F("/128"));
display_Update();
}
@ -848,7 +789,7 @@ void writeFlash_GB() {
display_Update();
// Read x number of banks
for (int currBank = 0; currBank < numBanks; currBank++) {
for (int currBank = 0; currBank < romBanks; currBank++) {
// Blink led
PORTB ^= (1 << 4);
@ -878,7 +819,7 @@ void writeFlash_GB() {
// Write flash
dataOut();
for (int currBank = 0; currBank < numBanks; currBank++) {
for (int currBank = 0; currBank < romBanks; currBank++) {
// Blink led
PORTB ^= (1 << 4);
@ -903,7 +844,14 @@ void writeFlash_GB() {
PORTH &= ~((1 << 3) | (1 << 6));
// Busy check
int timeout = 0;
while ((PINC & 0x80) != (sdBuffer[currByte] & 0x80)) {
__asm__("nop\n\t");
// Writing to 0x2A8000 fails for some unknown reason so a timeout is needed
timeout++;
if (timeout > 32760) {
break;
}
}
// Switch CS(PH3) and OE/RD(PH6) to HIGH
@ -927,28 +875,42 @@ void writeFlash_GB() {
writeErrors = 0;
// Verify flashrom
for (int y = 1; y < numBanks; y++) {
// Set ROM bank
uint16_t romAddress = 0;
// Read number of banks and switch banks
for (uint16_t bank = 1; bank < romBanks; bank++) {
// Switch data pins to output
dataOut();
writeByte_GB(0x2100, y);
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
}
// Switch data pins to intput
dataIn_GB();
if (bank > 1) {
romAddress = 0x4000;
}
// Blink led
PORTB ^= (1 << 4);
if (y > 1) {
addr = 0x4000;
}
for (; addr <= 0x7FFF; addr = addr + 512) {
// 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(addr + i) != sdBuffer[i]) {
if (readByte_GB(romAddress + i) != sdBuffer[i]) {
writeErrors++;
}
}
romAddress += 512;
}
}
// Close the file: