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Reduce ram usage by a small amount

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sanni 2022-02-15 12:09:21 +01:00
parent bb4ae30151
commit 7b92953e0b
3 changed files with 161 additions and 110 deletions
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6
Cart_Reader/Cart_Reader.ino
View File

@ -4,8 +4,8 @@
This project represents a community-driven effort to provide This project represents a community-driven effort to provide
an easy to build and easy to modify cartridge dumper. an easy to build and easy to modify cartridge dumper.
Date: 08.02.2022 Date: 15.02.2022
Version: 7.5 Version: 7.6
SD lib: https://github.com/greiman/SdFat SD lib: https://github.com/greiman/SdFat
OLED lib: https://github.com/adafruit/Adafruit_SSD1306 OLED lib: https://github.com/adafruit/Adafruit_SSD1306
@ -45,7 +45,7 @@
**********************************************************************************/ **********************************************************************************/
char ver[5] = "7.5"; char ver[5] = "7.6";
/****************************************** /******************************************
Libraries Libraries

261
Cart_Reader/GB.ino
View File

@ -11,7 +11,7 @@
// Game Boy // Game Boy
int sramBanks; int sramBanks;
int romBanks; int romBanks;
uint16_t sramEndAddress = 0; word lastByte = 0;
/****************************************** /******************************************
Menu Menu
@ -127,7 +127,7 @@ void gbxMenu() {
} }
getCartInfo_GB(); getCartInfo_GB();
// Does cartridge have SRAM // Does cartridge have SRAM
if (sramEndAddress > 0) { if (lastByte > 0) {
// Remove file name ending // Remove file name ending
int pos = -1; int pos = -1;
while (fileName[++pos] != '\0') { while (fileName[++pos] != '\0') {
@ -259,7 +259,7 @@ void gbMenu() {
case 1: case 1:
display_Clear(); display_Clear();
// Does cartridge have SRAM // Does cartridge have SRAM
if (sramEndAddress > 0) { if (lastByte > 0) {
// Change working dir to root // Change working dir to root
sd.chdir("/"); sd.chdir("/");
readSRAM_GB(); readSRAM_GB();
@ -272,7 +272,7 @@ void gbMenu() {
case 2: case 2:
display_Clear(); display_Clear();
// Does cartridge have SRAM // Does cartridge have SRAM
if (sramEndAddress > 0) { if (lastByte > 0) {
// Change working dir to root // Change working dir to root
sd.chdir("/"); sd.chdir("/");
filePath[0] = '\0'; filePath[0] = '\0';
@ -339,52 +339,60 @@ void showCartInfo_GB() {
println_Msg(F("GB Cart Info")); println_Msg(F("GB Cart Info"));
print_Msg(F("Name: ")); print_Msg(F("Name: "));
println_Msg(romName); println_Msg(romName);
print_Msg(F("Rom Type: ")); print_Msg(F("Mapper: "));
switch (romType) {
case 0: print_Msg(F("ROM ONLY")); break; if ((romType == 0) || (romType == 8) || (romType == 9))
case 1: print_Msg(F("MBC1")); break; print_Msg(F("none"));
case 2: print_Msg(F("MBC1+RAM")); break; else if ((romType == 1) || (romType == 2) || (romType == 3))
case 3: print_Msg(F("MBC1+RAM")); break; print_Msg(F("MBC1"));
case 5: print_Msg(F("MBC2")); break; else if ((romType == 5) || (romType == 6))
case 6: print_Msg(F("MBC2")); break; print_Msg(F("MBC2"));
case 8: print_Msg(F("ROM+RAM")); break; else if ((romType == 11) || (romType == 12) || (romType == 13))
case 9: print_Msg(F("ROM ONLY")); break; print_Msg(F("MMM01"));
case 11: print_Msg(F("MMM01")); break; else if ((romType == 15) || (romType == 16) || (romType == 17) || (romType == 18) || (romType == 19))
case 12: print_Msg(F("MMM01+RAM")); break; print_Msg(F("MBC3"));
case 13: print_Msg(F("MMM01+RAM")); break; else if ((romType == 21) || (romType == 22) || (romType == 23))
case 15: print_Msg(F("MBC3+TIMER")); break; print_Msg(F("MBC4"));
case 16: print_Msg(F("MBC3+TIMER+RAM")); break; else if ((romType == 25) || (romType == 26) || (romType == 27) || (romType == 28) || (romType == 29) || (romType == 309))
case 17: print_Msg(F("MBC3")); break; print_Msg(F("MBC5"));
case 18: print_Msg(F("MBC3+RAM")); break; if (romType == 252)
case 19: print_Msg(F("MBC3+RAM")); break; print_Msg(F("Camera"));
case 21: print_Msg(F("MBC4")); break;
case 22: print_Msg(F("MBC4+RAM")); break;
case 23: print_Msg(F("MBC4+RAM")); break;
case 25: print_Msg(F("MBC5")); break;
case 26: print_Msg(F("MBC5+RAM")); break;
case 27: print_Msg(F("MBC5+RAM")); break;
case 28: print_Msg(F("MBC5+RUMBLE")); break;
case 29: print_Msg(F("MBC5+RUMBLE+RAM")); break;
case 30: print_Msg(F("MBC5+RUMBLE+RAM")); break;
case 252: print_Msg(F("Gameboy Camera")); break;
default: print_Msg(F("Not found"));
}
println_Msg(F(" ")); println_Msg(F(" "));
print_Msg(F("Rom Size: ")); print_Msg(F("Rom Size: "));
switch (romSize) { switch (romSize) {
case 0: print_Msg(F("32KB")); break; case 0:
case 1: print_Msg(F("64KB")); break; print_Msg(F("32KB"));
case 2: print_Msg(F("128KB")); break; break;
case 3: print_Msg(F("256KB")); break;
case 4: print_Msg(F("512KB")); break; case 1:
case 5: print_Msg(F("1MB")); break; print_Msg(F("64KB"));
case 6: print_Msg(F("2MB")); break; break;
case 7: print_Msg(F("4MB")); break;
case 82: print_Msg(F("1.1MB")); break; case 2:
case 83: print_Msg(F("1.2MB")); break; print_Msg(F("128KB"));
case 84: print_Msg(F("1.5MB)")); break; break;
default: print_Msg(F("Not found"));
case 3:
print_Msg(F("256KB"));
break;
case 4:
print_Msg(F("512KB"));
break;
case 5: print_Msg(F("1MB"));
break;
case 6:
print_Msg(F("2MB"));
break;
case 7:
print_Msg(F("4MB"));
break;
} }
println_Msg(F("")); println_Msg(F(""));
print_Msg(F("Banks: ")); print_Msg(F("Banks: "));
println_Msg(romBanks); println_Msg(romBanks);
@ -396,14 +404,27 @@ void showCartInfo_GB() {
print_Msg(F("512B")); print_Msg(F("512B"));
} }
else { else {
print_Msg(F("None")); print_Msg(F("none"));
} }
break; break;
case 1: print_Msg(F("2KB")); break; case 1:
case 2: print_Msg(F("8KB")); break; print_Msg(F("2KB"));
case 3: print_Msg(F("32KB")); break; break;
case 4: print_Msg(F("128KB")); break;
default: print_Msg(F("Not found")); 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("none"));
} }
println_Msg(F("")); println_Msg(F(""));
print_Msg(F("Checksum: ")); print_Msg(F("Checksum: "));
@ -533,16 +554,43 @@ void getCartInfo_GB() {
sramSize = readByte_GB(0x0149); sramSize = readByte_GB(0x0149);
// ROM banks // ROM banks
romBanks = 2; // Default 32K switch (romSize)
if (romSize >= 1) { // Calculate rom size {
romBanks = 2 << romSize; case 0x00:
romBanks = 2;
break;
case 0x01:
romBanks = 4;
break;
case 0x02:
romBanks = 8;
break;
case 0x03:
romBanks = 16;
break;
case 0x04:
romBanks = 32;
break;
case 0x05:
romBanks = 64;
break;
case 0x06:
romBanks = 128;
break;
case 0x07:
romBanks = 256;
break;
default:
romBanks = 2;
} }
// RAM banks // SRAM banks
sramBanks = 0; // Default 0K RAM sramBanks = 0;
if (romType == 6) { if (romType == 6) {
sramBanks = 1; sramBanks = 1;
} }
// SRAM size
switch (sramSize) { switch (sramSize) {
case 2: case 2:
sramBanks = 1; sramBanks = 1;
@ -558,15 +606,15 @@ void getCartInfo_GB() {
break; break;
} }
// RAM end address // Last byte of SRAM
if (romType == 6) { if (romType == 6) {
sramEndAddress = 0xA1FF; // MBC2 512bytes (nibbles) lastByte = 0xA1FF;
} }
if (sramSize == 1) { if (sramSize == 1) {
sramEndAddress = 0xA7FF; // 2K RAM lastByte = 0xA7FF;
} }
if (sramSize > 1) { else if (sramSize > 1) {
sramEndAddress = 0xBFFF; // 8K RAM lastByte = 0xBFFF;
} }
// Get Checksum as string // Get Checksum as string
@ -588,7 +636,7 @@ void getCartInfo_GB() {
/****************************************** /******************************************
ROM functions ROM functions
*****************************************/ *****************************************/
// Dump ROM // Read ROM
void readROM_GB() { void readROM_GB() {
// Get name, add extension and convert to char array for sd lib // Get name, add extension and convert to char array for sd lib
strcpy(fileName, romName); strcpy(fileName, romName);
@ -615,36 +663,37 @@ void readROM_GB() {
print_Error(F("Can't create file on SD"), true); print_Error(F("Can't create file on SD"), true);
} }
uint16_t romAddress = 0; word romAddress = 0;
// Read number of banks and switch banks for (word currBank = 1; currBank < romBanks; currBank++) {
for (uint16_t bank = 1; bank < romBanks; bank++) {
// Switch data pins to output // Switch data pins to output
dataOut(); dataOut();
if (romType >= 5) { // MBC2 and above // Set ROM bank for MBC2/3/4/5
writeByte_GB(0x2100, bank); // Set ROM bank if (romType >= 5) {
writeByte_GB(0x2100, currBank);
} }
else { // MBC1 // Set ROM bank for MBC1
writeByte_GB(0x6000, 0); // Set ROM Mode else {
writeByte_GB(0x4000, bank >> 5); // Set bits 5 & 6 (01100000) of ROM bank writeByte_GB(0x6000, 0);
writeByte_GB(0x2000, bank & 0x1F); // Set bits 0 & 4 (00011111) of ROM bank writeByte_GB(0x4000, currBank >> 5);
writeByte_GB(0x2000, currBank & 0x1F);
} }
// Switch data pins to intput // Switch data pins to intput
dataIn_GB(); dataIn_GB();
if (bank > 1) { // Second bank starts at 0x4000
if (currBank > 1) {
romAddress = 0x4000; romAddress = 0x4000;
} }
// Read up to 7FFF per bank // Read banks and save to SD
while (romAddress <= 0x7FFF) { while (romAddress <= 0x7FFF) {
uint8_t readData[512];
for (int i = 0; i < 512; i++) { for (int i = 0; i < 512; i++) {
readData[i] = readByte_GB(romAddress + i); sdBuffer[i] = readByte_GB(romAddress + i);
} }
myFile.write(readData, 512); myFile.write(sdBuffer, 512);
romAddress += 512; romAddress += 512;
} }
} }
@ -653,6 +702,7 @@ void readROM_GB() {
myFile.close(); myFile.close();
} }
// Calculate checksum
unsigned int calc_checksum_GB (char* fileName, char* folder) { unsigned int calc_checksum_GB (char* fileName, char* folder) {
unsigned int calcChecksum = 0; unsigned int calcChecksum = 0;
// int calcFilesize = 0; // unused // int calcFilesize = 0; // unused
@ -687,6 +737,7 @@ unsigned int calc_checksum_GB (char* fileName, char* folder) {
} }
} }
// Compare checksum
boolean compare_checksum_GB() { boolean compare_checksum_GB() {
println_Msg(F("Calculating Checksum")); println_Msg(F("Calculating Checksum"));
@ -723,7 +774,7 @@ boolean compare_checksum_GB() {
// Read RAM // Read RAM
void readSRAM_GB() { void readSRAM_GB() {
// Does cartridge have RAM // Does cartridge have RAM
if (sramEndAddress > 0) { if (lastByte > 0) {
// Get name, add extension and convert to char array for sd lib // Get name, add extension and convert to char array for sd lib
strcpy(fileName, romName); strcpy(fileName, romName);
@ -746,12 +797,12 @@ void readSRAM_GB() {
dataIn_GB(); dataIn_GB();
// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?) // MBC2 Fix
readByte_GB(0x0134); readByte_GB(0x0134);
dataOut(); dataOut();
if (romType <= 4) { // MBC1 if (romType <= 4) {
writeByte_GB(0x6000, 1); // Set RAM Mode writeByte_GB(0x6000, 1);
} }
// Initialise MBC // Initialise MBC
@ -764,12 +815,11 @@ void readSRAM_GB() {
// Read SRAM // Read SRAM
dataIn_GB(); dataIn_GB();
for (uint16_t sramAddress = 0xA000; sramAddress <= sramEndAddress; sramAddress += 64) { for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress += 64) {
uint8_t readData[64];
for (uint8_t i = 0; i < 64; i++) { for (uint8_t i = 0; i < 64; i++) {
readData[i] = readByteSRAM_GB(sramAddress + i); sdBuffer[i] = readByteSRAM_GB(sramAddress + i);
} }
myFile.write(readData, 64); myFile.write(sdBuffer, 64);
} }
} }
@ -795,7 +845,7 @@ void readSRAM_GB() {
// Write RAM // Write RAM
void writeSRAM_GB() { void writeSRAM_GB() {
// Does cartridge have SRAM // Does cartridge have SRAM
if (sramEndAddress > 0) { if (lastByte > 0) {
// Create filepath // Create filepath
sprintf(filePath, "%s/%s", filePath, fileName); sprintf(filePath, "%s/%s", filePath, fileName);
@ -804,28 +854,29 @@ void writeSRAM_GB() {
// Set pins to input // Set pins to input
dataIn_GB(); dataIn_GB();
// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?) // MBC2 Fix
readByte_GB(0x0134); readByte_GB(0x0134);
dataOut(); dataOut();
if (romType <= 4) { // MBC1 // Enable SRAM for MBC1
writeByte_GB(0x6000, 1); // Set RAM Mode if (romType <= 4) {
writeByte_GB(0x6000, 1);
} }
// Initialise MBC // Initialise MBC
writeByte_GB(0x0000, 0x0A); writeByte_GB(0x0000, 0x0A);
// Switch RAM banks // Switch RAM banks
for (uint8_t bank = 0; bank < sramBanks; bank++) { for (byte currBank = 0; currBank < sramBanks; currBank++) {
writeByte_GB(0x4000, bank); writeByte_GB(0x4000, currBank);
// Write RAM // Write RAM
for (uint16_t sramAddress = 0xA000; sramAddress <= sramEndAddress; sramAddress++) { for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress++) {
writeByteSRAM_GB(sramAddress, myFile.read()); writeByteSRAM_GB(sramAddress, myFile.read());
} }
} }
// Disable RAM // Disable SRAM
writeByte_GB(0x0000, 0x00); writeByte_GB(0x0000, 0x00);
// Set pins to input // Set pins to input
@ -858,11 +909,11 @@ unsigned long verifySRAM_GB() {
dataIn_GB(); dataIn_GB();
// MBC2 Fix (unknown why this fixes it, maybe has to read ROM before RAM?) // MBC2 Fix
readByte_GB(0x0134); readByte_GB(0x0134);
// Does cartridge have RAM // Check SRAM size
if (sramEndAddress > 0) { if (lastByte > 0) {
dataOut(); dataOut();
if (romType <= 4) { // MBC1 if (romType <= 4) { // MBC1
writeByte_GB(0x6000, 1); // Set RAM Mode writeByte_GB(0x6000, 1); // Set RAM Mode
@ -878,7 +929,7 @@ unsigned long verifySRAM_GB() {
// Read SRAM // Read SRAM
dataIn_GB(); dataIn_GB();
for (uint16_t sramAddress = 0xA000; sramAddress <= sramEndAddress; sramAddress += 64) { for (word sramAddress = 0xA000; sramAddress <= lastByte; sramAddress += 64) {
//fill sdBuffer //fill sdBuffer
myFile.read(sdBuffer, 64); myFile.read(sdBuffer, 64);
for (int c = 0; c < 64; c++) { for (int c = 0; c < 64; c++) {
@ -1064,8 +1115,8 @@ void writeFlash29F_GB(byte MBC) {
// Write flash // Write flash
dataOut(); dataOut();
uint16_t currAddr = 0; word currAddr = 0;
uint16_t endAddr = 0x3FFF; word endAddr = 0x3FFF;
for (int currBank = 0; currBank < romBanks; currBank++) { for (int currBank = 0; currBank < romBanks; currBank++) {
// Blink led // Blink led
@ -1170,10 +1221,10 @@ void writeFlash29F_GB(byte MBC) {
writeErrors = 0; writeErrors = 0;
// Verify flashrom // Verify flashrom
uint16_t romAddress = 0; word romAddress = 0;
// Read number of banks and switch banks // Read number of banks and switch banks
for (uint16_t bank = 1; bank < romBanks; bank++) { for (word bank = 1; bank < romBanks; bank++) {
// Switch data pins to output // Switch data pins to output
dataOut(); dataOut();
@ -1464,8 +1515,8 @@ bool writeCFI_GB() {
// Write flash // Write flash
dataOut(); dataOut();
uint16_t currAddr = 0; word currAddr = 0;
uint16_t endAddr = 0x3FFF; word endAddr = 0x3FFF;
for (int currBank = 0; currBank < romBanks; currBank++) { for (int currBank = 0; currBank < romBanks; currBank++) {
// Blink led // Blink led
@ -1539,10 +1590,10 @@ bool writeCFI_GB() {
writeErrors = 0; writeErrors = 0;
// Verify flashrom // Verify flashrom
uint16_t romAddress = 0; word romAddress = 0;
// Read number of banks and switch banks // Read number of banks and switch banks
for (uint16_t bank = 1; bank < romBanks; bank++) { for (word bank = 1; bank < romBanks; bank++) {
// Switch data pins to output // Switch data pins to output
dataOut(); dataOut();

4
Cart_Reader/SMS.ino
View File

@ -366,13 +366,13 @@ void getCartInfo_SMS() {
headerFZ[i] = char(readByte_SMS(0x7fe0 + i)); headerFZ[i] = char(readByte_SMS(0x7fe0 + i));
} }
headerFZ[28] = '\0'; headerFZ[28] = '\0';
if (strcmp(headerFZ, "COPYRIGHT SEGAPRG. BY T.ASAI") == 0) { if (strcmp(headerFZ, "COPYRIGHT SEGAPRG. BY T.ASAI") == 0) {
strcpy(romName, "TMR SEGA"); strcpy(romName, "TMR SEGA");
cartSize = 128 * 1024UL; cartSize = 128 * 1024UL;
} }
} }
display_Clear(); display_Clear();
println_Msg(F("Cart Info")); println_Msg(F("Cart Info"));
println_Msg(F(" ")); println_Msg(F(" "));