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cartreader/Cart_Reader/SNES.ino
sanni ae8d1e1f28 V19D: Changed the way GBA roms are read
2016-09-27 00:00:22 +02:00

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//******************************************
// SUPER NINTENDO
//******************************************
/******************************************
Defines
*****************************************/
// SNES Hi and LoRom, SA is HI with different Sram dumping
#define EX 4
#define SA 3
#define HI 1
#define LO 0
/******************************************
Variables
*****************************************/
// Define SNES Cart Reader Variables
int romSpeed = 0; // 0 = SlowROM, 3 = FastROM
int romChips = 0; // 0 = ROM only, 1 = ROM & RAM, 2 = ROM & Save RAM, 3 = ROM & DSP1, 4 = ROM & RAM & DSP1, 5 = ROM & Save RAM & DSP1, 19 = ROM & SFX
// 227 = ROM & RAM & GameBoy data, 246 = ROM & DSP2
byte romSizeExp = 0; // ROM-Size Exponent
int cartCountry = 255;
boolean NP = false;
/******************************************
Menu
*****************************************/
// SNES menu items
const char SnesMenuItem1[] PROGMEM = "Read Rom";
const char SnesMenuItem2[] PROGMEM = "Read Save";
const char SnesMenuItem3[] PROGMEM = "Write Save";
const char SnesMenuItem4[] PROGMEM = "Test SRAM";
const char SnesMenuItem5[] PROGMEM = "Cycle cart";
const char SnesMenuItem6[] PROGMEM = "Reset";
const char* const menuOptionsSNES[] PROGMEM = {SnesMenuItem1, SnesMenuItem2, SnesMenuItem3, SnesMenuItem4, SnesMenuItem5, SnesMenuItem6};
// Manual config menu items
const char confMenuItem1[] PROGMEM = "Use header info";
const char confMenuItem2[] PROGMEM = "4MB LoRom 256K Sram";
const char confMenuItem3[] PROGMEM = "4MB HiRom 64K Sram";
const char confMenuItem4[] PROGMEM = "6MB ExRom 256K Sram";
const char confMenuItem5[] PROGMEM = "Reset";
const char* const menuOptionsConf[] PROGMEM = {confMenuItem1, confMenuItem2, confMenuItem3, confMenuItem4, confMenuItem5};
// SNES Menu
void snesMenu() {
// create menu with title and 7 options to choose from
unsigned char mainMenu;
// Copy menuOptions of of progmem
convertPgm(menuOptionsSNES, 6);
mainMenu = question_box("SNES Cart Reader", menuOptions, 6, 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_SNES();
compare_checksum();
break;
case 1:
if (sramSize > 0) {
display_Clear();
// Change working dir to root
sd.chdir("/");
readSRAM();
}
else {
display_Clear();
print_Error(F("Does not have SRAM"), false);
}
break;
case 2:
if (sramSize > 0) {
display_Clear();
// Change working dir to root
sd.chdir("/");
writeSRAM(1);
unsigned long wrErrors;
wrErrors = verifySRAM();
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 {
display_Clear();
print_Error(F("Does not have SRAM"), false);
}
break;
case 3:
if (sramSize > 0) {
display_Clear();
// Change working dir to root
sd.chdir("/");
readSRAM();
eraseSRAM(0x00);
eraseSRAM(0xFF);
writeSRAM(0);
unsigned long wrErrors = verifySRAM();
if (wrErrors == 0) {
println_Msg(F("Restored OK"));
display_Update();
}
else {
print_Msg(F("Error: "));
print_Msg(wrErrors);
println_Msg(F(" bytes "));
print_Error(F("did not verify."), false);
}
}
else {
display_Clear();
print_Error(F("Does not have SRAM"), false);
}
break;
case 4:
// For arcademaster1 (Markfrizb) multi-game carts
// Set reset pin to output (PH0)
DDRH |= (1 << 0);
// Switch RST(PH0) to LOW
PORTH &= ~(1 << 0);
display_Clear();
print_Msg("Resetting...");
display_Update();
delay(3000); // wait 3 secs to switch to next game
asm volatile (" jmp 0");
break;
case 5:
asm volatile (" jmp 0");
break;
}
println_Msg(F(""));
println_Msg(F("Press Button..."));
display_Update();
wait();
}
// Menu for manual configuration
void confMenu() {
// create menu with title and 5 options to choose from
unsigned char subMenu;
// Copy menuOptions of of progmem
convertPgm(menuOptionsConf, 5);
subMenu = question_box("Choose mapping", menuOptions, 5, 0);
// wait for user choice to come back from the question box menu
switch (subMenu)
{
case 0:
break;
case 1:
romType = LO;
numBanks = 128;
sramSize = 256;
strcpy(romName, "LOROM");
break;
case 2:
romType = HI;
numBanks = 64;
sramSize = 64;
strcpy(romName, "HIROM");
break;
case 3:
romType = EX;
numBanks = 96;
sramSize = 256;
strcpy(romName, "EXROM");
break;
case 4:
// Reset
asm volatile (" jmp 0");
break;
}
}
/******************************************
Setup
*****************************************/
void setup_Snes() {
// Set cicrstPin(PG1) to Output
DDRG |= (1 << 1);
// Output a high signal until we're ready to start
PORTG |= (1 << 1);
// Set cichstPin(PG0) to Input
DDRG &= ~(1 << 0);
// Adafruit Clock Generator
//clockgen.set_correction(-29000);
clockgen.set_correction(0);
clockgen.init(SI5351_CRYSTAL_LOAD_8PF, 0);
clockgen.set_pll(SI5351_PLL_FIXED, SI5351_PLLA);
clockgen.set_pll(SI5351_PLL_FIXED, SI5351_PLLB);
clockgen.set_freq(2147727200ULL, SI5351_PLL_FIXED, SI5351_CLK0);
clockgen.set_freq(307200000ULL, SI5351_PLL_FIXED, SI5351_CLK2);
clockgen.output_enable(SI5351_CLK0, 1);
clockgen.output_enable(SI5351_CLK1, 0);
clockgen.output_enable(SI5351_CLK2, 1);
// Set Address Pins to Output
//A0-A7
DDRF = 0xFF;
//A8-A15
DDRK = 0xFF;
//BA0-BA7
DDRL = 0xFF;
//PA0-PA7
DDRA = 0xFF;
// Set Control Pins to Output RST(PH0) CS(PH3) WR(PH5) RD(PH6)
DDRH |= (1 << 0) | (1 << 3) | (1 << 5) | (1 << 6);
// Switch RST(PH0) and WR(PH5) to HIGH
PORTH |= (1 << 0) | (1 << 5);
// Switch CS(PH3) and RD(PH6) to LOW
PORTH &= ~((1 << 3) | (1 << 6));
// Set Refresh(PE5) to Output
DDRE |= (1 << 5);
// Switch Refresh(PE5) to LOW (needed for SA-1)
PORTE &= ~(1 << 5);
// Set CPU Clock(PH1) to Output
DDRH |= (1 << 1);
//PORTH &= ~(1 << 1);
// Set IRQ(PH4) to Input
DDRH &= ~(1 << 4);
// Activate Internal Pullup Resistors
//PORTH |= (1 << 4);
// Set expand(PG5) to Imput
DDRG &= ~(1 << 5);
// Activate Internal Pullup Resistors
//PORTG |= (1 << 5);
// Set Data Pins (D0-D7) to Input
DDRC = 0x00;
// Enable Internal Pullups
//PORTC = 0xFF;
// Unused pins
// Set wram(PE4) to Output
DDRE |= (1 << 4);
//PORTE &= ~(1 << 4);
// Set pawr(PJ1) to Output
DDRJ |= (1 << 1);
//PORTJ &= ~(1 << 1);
// Set pard(PJ0) to Output
DDRJ |= (1 << 0);
//PORTJ &= ~(1 << 0);
// Start CIC by outputting a low signal to cicrstPin(PG1)
PORTG &= ~(1 << 1);
// Wait for CIC reset
delay(1000);
// Print all the info
getCartInfo_SNES();
}
/******************************************
I/O Functions
*****************************************/
// Switch control pins to write
void controlOut_SNES() {
// Switch RD(PH6) and WR(PH5) to HIGH
PORTH |= (1 << 6) | (1 << 5);
// Switch CS(PH3) to LOW
PORTH &= ~(1 << 3);
}
// Switch control pins to read
void controlIn_SNES() {
// Switch WR(PH5) to HIGH
PORTH |= (1 << 5);
// Switch CS(PH3) and RD(PH6) to LOW
PORTH &= ~((1 << 3) | (1 << 6));
}
/******************************************
Low level functions
*****************************************/
// Write one byte of data to a location specified by bank and address, 00:0000
void writeBank_SNES(byte myBank, word myAddress, byte myData) {
PORTL = myBank;
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
PORTC = myData;
// Arduino running at 16Mhz -> one nop = 62.5ns
// Wait till output is stable
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
// Switch WR(PH5) to LOW
PORTH &= ~(1 << 5);
// Leave WR low for at least 60ns
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
// Switch WR(PH5) to HIGH
PORTH |= (1 << 5);
// Leave WR high for at least 50ns
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
}
// Read one byte of data from a location specified by bank and address, 00:0000
byte readBank_SNES(byte myBank, word myAddress) {
PORTL = myBank;
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
// Arduino running at 16Mhz -> one nop = 62.5ns -> 1000ns total
__asm__("nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t""nop\n\t");
// Read
byte tempByte = PINC;
return tempByte;
}
/******************************************
SNES ROM Functions
******************************************/
void getCartInfo_SNES() {
boolean manualConfig = 0;
// Print start page
if (checkcart_SNES() == 0) {
// Checksum either corrupt or 0000
manualConfig = 1;
errorLvl = 1;
rgb.setColor(255, 0, 0);
display_Clear();
println_Msg(F("ERROR"));
println_Msg(F("Rom header corrupt"));
println_Msg(F("or missing"));
println_Msg(F(""));
println_Msg(F(""));
println_Msg(F("Press button for"));
println_Msg(F("manual configuration"));
println_Msg(F("or powercycle if SA1"));
display_Update();
wait();
// Wait() clears errors but in this case we still have an error
errorLvl = 1;
}
display_Clear();
print_Msg(F("Rom Name: "));
println_Msg(romName);
print_Msg(F("Type: "));
if (romType == HI)
print_Msg(F("HiROM"));
else if (romType == LO)
print_Msg(F("LoROM"));
else if (romType == EX)
print_Msg(F("ExHiRom"));
else
print_Msg(romType);
print_Msg(F(" "));
if (romSpeed == 0)
println_Msg(F("SlowROM"));
else if (romSpeed == 2)
println_Msg(F("SlowROM"));
else if (romSpeed == 3)
println_Msg(F("FastROM"));
else
println_Msg(romSpeed);
print_Msg(F("ICs: ROM "));
if (romChips == 0)
println_Msg(F("ONLY"));
else if (romChips == 1)
println_Msg(F("RAM"));
else if (romChips == 2)
println_Msg(F("SAVE"));
else if (romChips == 3)
println_Msg(F("DSP1"));
else if (romChips == 4)
println_Msg(F("DSP1 RAM"));
else if (romChips == 5)
println_Msg(F("DSP1 SAVE"));
else if ((romChips == 19) || (romChips == 20) || (romChips == 21) || (romChips == 26))
println_Msg(F("SuperFX"));
else if (romChips == 52) {
println_Msg(F("SA1 RAM"));
romType = SA;
}
else if (romChips == 53) {
println_Msg(F("SA1 RAM BATT"));
romType = SA;
}
else if (romChips == 69) {
println_Msg(F("SDD1 BATT"));
}
else if (romChips == 227)
println_Msg(F("RAM GBoy"));
else if (romChips == 246)
println_Msg(F("DSP2"));
else
println_Msg(F(""));
print_Msg(F("Rom Size: "));
print_Msg(romSize);
println_Msg(F("Mbit"));
print_Msg(F("Banks: "));
println_Msg(numBanks);
print_Msg(F("Sram Size: "));
print_Msg(sramSize);
println_Msg(F("Kbit"));
print_Msg(F("ROM Version: 1."));
println_Msg(romVersion);
print_Msg(F("Checksum: "));
println_Msg(checksumStr);
display_Update();
// Wait for user input
if (enable_OLED) {
println_Msg(F(" "));
println_Msg(F(" "));
println_Msg(F("Press Button..."));
display_Update();
wait();
}
else if (enable_Serial) {
println_Msg(F(" "));
}
// Start manual config
if (manualConfig == 1) {
confMenu();
}
}
void checkAltConf() {
char tempStr1[2];
char tempStr2[5];
char sizeStr[3];
char bankStr[3];
if (myFile.open("snes.txt", O_READ)) {
while (myFile.available()) {
// Read 4 bytes into String, do it one at a time so byte order doesn't get mixed up
sprintf(tempStr1, "%c", myFile.read());
strcpy(tempStr2, tempStr1);
sprintf(tempStr1, "%c", myFile.read());
strcat(tempStr2, tempStr1);
sprintf(tempStr1, "%c", myFile.read());
strcat(tempStr2, tempStr1);
sprintf(tempStr1, "%c", myFile.read());
strcat(tempStr2, tempStr1);
// Check if string is a match
if (strcmp(tempStr2, checksumStr) == 0) {
// Skip the , in the file
myFile.seekSet(myFile.curPosition() + 1);
// Read next two bytes into a string
romSize = myFile.read() - 48;
romSize = romSize * 10 + myFile.read() - 48;
// Skip the , in the file
myFile.seekSet(myFile.curPosition() + 1);
// Add next two bytes to the string
numBanks = myFile.read() - 48;
numBanks = numBanks * 10 + myFile.read() - 48;
}
// If no match empty string advance by 8 and try again
else {
myFile.seekSet(myFile.curPosition() + 8);
}
}
}
// Close the file:
myFile.close();
}
// Read header information
boolean checkcart_SNES() {
// set control to read
dataIn();
// Get Checksum as string
sprintf(checksumStr, "%02X%02X", readBank_SNES(0, 65503), readBank_SNES(0, 65502));
// Check if ExHiROM
if (readBank_SNES(0, 0xFFD5) == 0x35) {
romType = EX;
}
else {
// Check if LoROM or HiROM
romType = (readBank_SNES(0, 0xFFD5) & 1);
}
// Check RomSpeed
romSpeed = (readBank_SNES(0, 65493) >> 4);
// Check RomChips
romChips = readBank_SNES(0, 65494);
if (romChips == 69)
{
romSize = 48;
numBanks = 96;
romType = HI;
}
else
{
// Check RomSize
byte romSizeExp = readBank_SNES(0, 65495) - 7;
romSize = 1;
while (romSizeExp--)
romSize *= 2;
if ((romType == EX) || (romType == SA)) {
numBanks = long(romSize) * 2;
}
else {
numBanks = (long(romSize) * 1024 * 1024 / 8) / (32768 + (long(romType) * 32768));
}
}
//Check SD card for alt config
checkAltConf();
// Dump name into 8.3 compatible format
byte myByte = 0;
byte myLength = 0;
for (unsigned int i = 65472; i < 65492; i++) {
myByte = readBank_SNES(0, i);
if (((char(myByte) >= 48 && char(myByte) <= 57) || (char(myByte) >= 65 && char(myByte) <= 122)) && myLength < 8) {
romName[myLength] = char(myByte);
myLength++;
}
}
// Read sramSizeExp
byte sramSizeExp;
if ((romChips == 19) || (romChips == 20) || (romChips == 21) || (romChips == 26)) {
// SuperFX
if (readBank_SNES(0, 0x7FDA) == 0x33) {
sramSizeExp = readBank_SNES(0, 0x7FBD);
}
else {
if (strncmp(romName, "STARFOX2", 8) == 0) {
sramSizeExp = 6;
}
else {
sramSizeExp = 5;
}
}
}
else {
// No SuperFX
sramSizeExp = readBank_SNES(0, 0xFFD8);
}
// Calculate sramSize
if (sramSizeExp != 0) {
sramSizeExp = sramSizeExp + 3;
sramSize = 1;
while (sramSizeExp--)
sramSize *= 2;
}
else {
sramSize = 0;
}
// Check Cart Country
cartCountry = readBank_SNES(0, 65497);
// ROM Version
romVersion = readBank_SNES(0, 65499);
// Test if checksum is equal to reverse checksum
if (((word(readBank_SNES(0, 65500)) + (word(readBank_SNES(0, 65501)) * 256)) + (word(readBank_SNES(0, 65502)) + (word(readBank_SNES(0, 65503)) * 256))) == 65535 ) {
if (strcmp("0000", checksumStr) == 0) {
return 0;
}
else {
return 1;
}
}
// Either rom checksum is wrong or no cart is inserted
else {
return 0;
}
}
unsigned int calc_checksum (char* fileName, char* folder) {
unsigned int calcChecksum = 0;
unsigned int calcChecksumChunk = 0;
int calcFilesize = 0;
unsigned int c = 0;
unsigned long i = 0;
unsigned long j = 0;
if (strcmp(folder, "root") != 0)
sd.chdir(folder);
// If file exists
if (myFile.open(fileName, O_READ)) {
calcFilesize = myFile.fileSize() * 8 / 1024 / 1024;
// Nintendo Power (SF Memory Cassette)
// Read up to 0x60000 then add FFs to 0x80000
if (NP == true) {
for (i = 0; i < (0x60000 / 512); i++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
calcChecksum = calcChecksumChunk;
}
calcChecksum += 0xF47C; // FFs from 0x60000-0x80000
}
else if (calcFilesize == 12 || calcFilesize == 20) {
// Divide filesize by 8 to get number of 8Mbit chunks
for (i = 0; i < (calcFilesize / 8); i++ ) {
// Add all the bits in the 8Mbit chunks
for (j = 0; j < (1048576 / 512); j++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
}
calcChecksum = calcChecksumChunk;
}
calcChecksumChunk = 0;
// Add the 4Mbit rest
for (j = 0; j < (524288 / 512); j++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
}
calcChecksum += 2 * calcChecksumChunk;
}
else if (calcFilesize == 24 || calcFilesize == 28) {
/* Momotarou Dentestu Happy Fix 3MB (24Mbit)
if ((calcFilesize == 24) && (romSizeExp = 0x0C)) {
for (i = 0; i < (myFile.fileSize() / 512); i++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
}
calcChecksum = 2 * calcChecksumChunk;
}
else {*/
for (i = 0; i < (calcFilesize / 16); i++ ) {
// Add all the bits in the 16Mbit chunks
for (j = 0; j < (2097152 / 512); j++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
}
calcChecksum = calcChecksumChunk;
}
calcChecksumChunk = 0;
// Add the 8Mbit rest
for (j = 0; j < (1048576 / 512); j++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
}
calcChecksum += 2 * calcChecksumChunk;
//}
}
else if ((calcFilesize == 40) && (romChips == 85)) {
// Daikaijuu Monogatari 2 Fix 5MB (40Mbit)
// Add the 4MB (32Mbit) start
for (j = 0; j < (4194304 / 512); j++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
calcChecksum = calcChecksumChunk;
}
calcChecksumChunk = 0;
// Add the 1MB (8Mbit) end
for (j = 0; j < (1048576 / 512); j++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
}
calcChecksum += 4 * calcChecksumChunk;
}
else if (calcFilesize == 48) {
// Star Ocean/Tales of Phantasia Fix 6MB (48Mbit)
// Add the 4MB (32Mbit) start
for (j = 0; j < (4194304 / 512); j++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
calcChecksum = calcChecksumChunk;
}
calcChecksumChunk = 0;
// Add the 2MB (16Mbit) end
for (j = 0; j < (2097152 / 512); j++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
}
calcChecksum += 2 * calcChecksumChunk;
}
else {
//calcFilesize == 2 || 4 || 8 || 16 || 32 || 40 || etc
for (i = 0; i < (myFile.fileSize() / 512); i++) {
myFile.read(sdBuffer, 512);
for (c = 0; c < 512; c++) {
calcChecksumChunk += sdBuffer[c];
}
calcChecksum = calcChecksumChunk;
}
}
myFile.close();
sd.chdir();
return (calcChecksum);
}
// Else show error
else {
print_Error(F("DUMP ROM 1ST"), false);
return 0;
}
}
boolean compare_checksum() {
println_Msg(F("Calculating Checksum"));
display_Update();
strcpy(fileName, romName);
strcat(fileName, ".sfc");
// last used rom folder
EEPROM_readAnything(0, foldern);
sprintf(folder, "ROM/%s/%d", romName, foldern - 1);
char calcsumStr[5];
sprintf(calcsumStr, "%04X", calc_checksum(fileName, folder));
if (strcmp(calcsumStr, checksumStr) == 0) {
print_Msg(F("Result: "));
println_Msg(calcsumStr);
println_Msg(F("Checksum matches"));
display_Update();
return 1;
}
else {
print_Msg(F("Result: "));
println_Msg(calcsumStr);
print_Error(F("Checksum Error"), false);
display_Update();
return 0;
}
}
// Read rom to SD card
void readROM_SNES() {
// Set control
dataIn();
controlIn_SNES();
// Get name, add extension and convert to char array for sd lib
strcpy(fileName, romName);
strcat(fileName, ".sfc");
// create a new folder for the save file
EEPROM_readAnything(0, foldern);
sprintf(folder, "ROM/%s/%d", romName, foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
//clear the screen
display_Clear();
println_Msg(F("Creating folder: "));
println_Msg(folder);
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_Error(F("Can't create file on SD"), true);
}
// Check if LoROM or HiROM...
if (romType == LO) {
println_Msg(F("Dumping LoRom..."));
display_Update();
// Read up to 96 banks starting at bank 0×00.
for (int currBank = 0; currBank < numBanks; currBank++) {
// Dump the bytes to SD 512B at a time
for (long currByte = 32768; currByte < 65536; currByte += 512) {
for (int c = 0; c < 512; c++) {
sdBuffer[c] = readBank_SNES(currBank, currByte + c);
}
myFile.write(sdBuffer, 512);
}
}
}
// Dump High-type ROM
else if (((romType == HI) || (romType == SA) || (romType == EX)) && (romChips != 69)) {
println_Msg(F("Dumping HiRom..."));
display_Update();
for (int currBank = 192; currBank < (numBanks + 192); currBank++) {
for (long currByte = 0; currByte < 65536; currByte += 512) {
for (int c = 0; c < 512; c++) {
sdBuffer[c] = readBank_SNES(currBank, currByte + c);
}
myFile.write(sdBuffer, 512);
}
}
}
// Dump SDD1 High-type ROM
else if ((romType == HI) && (romChips == 69)) {
println_Msg(F("Dumping SDD1 HiRom..."));
display_Update();
controlIn_SNES();
byte initialSOMap = readBank_SNES(0, 18439);
for (int currMemmap = 0; currMemmap < (numBanks / 16); currMemmap++) {
dataOut();
controlOut_SNES();
writeBank_SNES(0, 18439, currMemmap);
dataIn();
controlIn_SNES();
for (int currBank = 240; currBank < 256; currBank++) {
for (long currByte = 0; currByte < 65536; currByte += 512) {
for (int c = 0; c < 512; c++) {
sdBuffer[c] = readBank_SNES(currBank, currByte + c);
}
myFile.write(sdBuffer, 512);
}
}
}
dataOut();
controlOut_SNES();
writeBank_SNES(0, 18439, initialSOMap);
dataIn();
controlIn_SNES();
}
// Close the file:
myFile.close();
// Signal end of process
print_Msg(F("Saved as "));
println_Msg(fileName);
}
/******************************************
SNES SRAM Functions
*****************************************/
// Write file to SRAM
void writeSRAM (boolean browseFile) {
if (browseFile) {
filePath[0] = '\0';
sd.chdir("/");
fileBrowser("Select srm file");
// Create filepath
sprintf(filePath, "%s/%s", filePath, fileName);
display_Clear();
}
else
sprintf(filePath, "%s", fileName);
//open file on sd card
if (myFile.open(filePath, O_READ)) {
// Set pins to output
dataOut();
// Set RST RD WR to High and CS to Low
controlOut_SNES();
// LoRom
if (romType == LO) {
// Sram size
long lastByte = (long(sramSize) * 128);
for (long currByte = 0; currByte < lastByte; currByte++) {
writeBank_SNES(0x70, currByte, myFile.read());
}
}
// HiRom
else if (romType == HI) {
// Writing SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte++) {
writeBank_SNES(0x30, currByte, myFile.read());
}
}
// ExHiRom
else if (romType == EX) {
// Writing SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte++) {
writeBank_SNES(0xB0, currByte, myFile.read());
}
}
// SA1
else if (romType == SA) {
long lastByte = (long(sramSize) * 0x80);
// Enable CPU Clock
clockgen.set_freq(357954500ULL, SI5351_PLL_FIXED, SI5351_CLK1);
clockgen.output_enable(SI5351_CLK1, 1);
// Direct writes to BW-RAM (SRAM) in banks 0x40-0x43 don't work
// Break BW-RAM (SRAM) into 0x2000 blocks
// Use $2225 to map BW-RAM block to 0x6000-0x7FFF
// Writes must be to entire address range 0x0000-0x7FFF
byte lastBlock = 0;
lastBlock = lastByte / 0x2000;
// Writing SRAM on SA1 needs CS(PH3) to be high
PORTH |= (1 << 3);
for (byte currBlock = 0; currBlock < lastBlock; currBlock++) {
// Set 0x2225 (SA-1 BMAP) to map SRAM Block to 0x6000-0x7FFF
writeBank_SNES(0, 0x2225, currBlock);
// Set 0x2227 to 0x80 SA-1 SWBE BW-RAM Write Enable
writeBank_SNES(0, 0x2227, 0x80);
for (long currByte = 0x0000; currByte < 0x8000; currByte += 512) {
if (currByte < 0x6000) {
for (int c = 0; c < 512; c++) {
// Shift to bypass protected 1st 0x100 bytes
writeBank_SNES(0, currByte + c, currBlock + lastBlock);
}
}
else {
myFile.read(sdBuffer, 512);
for (int c = 0; c < 512; c++) {
writeBank_SNES(0, currByte + c, sdBuffer[c]);
}
}
}
}
// Set 0x2227 to 0x00 SA-1 SWBE BW-RAM Write Disable
writeBank_SNES(0, 0x2227, 0x00);
// Disable CPU clock
clockgen.output_enable(SI5351_CLK1, 0);
}
// Set pins to input
dataIn();
// Close the file:
myFile.close();
println_Msg(F("SRAM writing finished"));
display_Update();
}
else {
print_Error(F("File doesnt exist"), false);
}
}
void readSRAM () {
// set control
controlIn_SNES();
// Get name, add extension and convert to char array for sd lib
strcpy(fileName, romName);
strcat(fileName, ".srm");
// 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);
// Signal end of process
print_Msg(F("Reading to SAVE/"));
print_Msg(romName);
print_Msg(F("/"));
print_Msg(foldern);
print_Msg(F("/"));
print_Msg(fileName);
print_Msg(F("..."));
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_Error(F("SD Error"), true);
}
if (romType == LO) {
// Sram size
long lastByte = (long(sramSize) * 128);
for (long currByte = 0; currByte < lastByte; currByte++) {
myFile.write(readBank_SNES(0x70, currByte));
}
}
else if (romType == HI) {
// Dumping SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte++) {
myFile.write(readBank_SNES(0x30, currByte));
}
}
else if (romType == EX) {
// Dumping SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte++) {
myFile.write(readBank_SNES(0xB0, currByte));
}
}
else if (romType == SA) {
// Dumping SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128);
for (long currByte = 0x0; currByte < lastByte; currByte++) {
myFile.write(readBank_SNES(0x40, currByte));
}
}
// Close the file:
myFile.close();
// Signal end of process
println_Msg(F("Done"));
display_Update();
}
// Check if the SRAM was written without any error
unsigned long verifySRAM() {
//open file on sd card
if (myFile.open(filePath, O_READ)) {
// Variable for errors
writeErrors = 0;
// Set control
controlIn_SNES();
if (romType == LO) {
// Sram size
long lastByte = (long(sramSize) * 128);
for (long currByte = 0; currByte < lastByte; currByte += 512) {
//fill sdBuffer
myFile.read(sdBuffer, 512);
for (int c = 0; c < 512; c++) {
if ((readBank_SNES(0x70, currByte + c)) != sdBuffer[c]) {
writeErrors++;
}
}
}
}
else if (romType == HI) {
// Dumping SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte += 512) {
//fill sdBuffer
myFile.read(sdBuffer, 512);
for (int c = 0; c < 512; c++) {
if ((readBank_SNES(0x30, currByte + c)) != sdBuffer[c]) {
writeErrors++;
}
}
}
}
else if (romType == EX) {
// Dumping SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte += 512) {
//fill sdBuffer
myFile.read(sdBuffer, 512);
for (int c = 0; c < 512; c++) {
if ((readBank_SNES(0xB0, currByte + c)) != sdBuffer[c]) {
writeErrors++;
}
}
}
}
else if (romType == SA) {
// Dumping SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128);
for (long currByte = 0x0; currByte < lastByte; currByte += 512) {
//fill sdBuffer
myFile.read(sdBuffer, 512);
for (int c = 0; c < 512; c++) {
if ((readBank_SNES(0x40, currByte + c)) != sdBuffer[c]) {
writeErrors++;
}
}
}
}
// Close the file:
myFile.close();
return writeErrors;
}
else {
print_Error(F("Can't open file"), false);
}
}
// Overwrite the entire SRAM
boolean eraseSRAM (byte b) {
print_Msg(F("0x"));
print_Msg(b, HEX);
print_Msg(F(": "));
display_Update();
// Set pins to output
dataOut();
// Set control pins
controlOut_SNES();
if (romType == LO) {
// Sram size
long lastByte = (long(sramSize) * 128);
for (long currByte = 0; currByte < lastByte; currByte++) {
writeBank_SNES(0x70, currByte, b);
}
}
else if (romType == HI) {
// Writing SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte++) {
writeBank_SNES(0x30, currByte, b);
}
}
// ExHiRom
else if (romType == EX) {
// Writing SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte++) {
writeBank_SNES(0xB0, currByte, b);
}
}
dataIn();
// Variable for errors
writeErrors = 0;
// Set control
controlIn_SNES();
if (romType == LO) {
// Sram size
long lastByte = (long(sramSize) * 128);
for (long currByte = 0; currByte < lastByte; currByte += 512) {
for (int c = 0; c < 512; c++) {
if ((readBank_SNES(0x70, currByte + c)) != b) {
writeErrors++;
}
}
}
}
else if (romType == HI) {
// Dumping SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte += 512) {
for (int c = 0; c < 512; c++) {
if ((readBank_SNES(0x30, currByte + c)) != b) {
writeErrors++;
}
}
}
}
else if (romType == EX) {
// Dumping SRAM on HiRom needs CS(PH3) to be high
PORTH |= (1 << 3);
// Sram size
long lastByte = (long(sramSize) * 128) + 0x6000;
for (long currByte = 0x6000; currByte < lastByte; currByte += 512) {
for (int c = 0; c < 512; c++) {
if ((readBank_SNES(0xB0, currByte + c)) != b) {
writeErrors++;
}
}
}
}
if (writeErrors == 0) {
println_Msg(F("OK"));
return 1;
}
else {
println_Msg(F("ERROR"));
return 0;
}
display_Update();
}
//******************************************
// End of File
//******************************************
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