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cartreader/Cart_Reader/WS.ino

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//*********************************************************
// BANDAI WONDERSWAN & BENESSE POCKET CHALLENGE V2 MODULE
//*********************************************************
#ifdef ENABLE_WS
// Cartridge pinout
// 48P 1.25mm pitch connector
// C1, C48 : GND
// C24, C25 : VDD (+3.3v)
// C16-C23 : D7-D0
// C34-C39 : D8-D13
// C14-C15 : D15-D14
// C26-C29 : A(-1)-A2
// C10-C13 : A6-A3
// C30-C33 : A18-A15
// C2,C3,C4,C5 : A14,A9,A10,A8
// C6,C7,C8,C9 : A7,A12,A13,A11
// C40 : /RST
// C41 : /IO? (only use when unlocking MMC)
// C42 : /MMC (access port on cartridge with both /CART and /MMC = L)
// C43 : /OE
// C44 : /WE
// C45 : /CART? (L when accessing cartridge (ROM/SRAM/PORT))
// C46 : INT (for RTC alarm interrupt)
// C47 : CLK (384KHz on WS)
#ifdef OPTION_WS_ADAPTER_V2
#define WS_CLK_BIT 5 // USE PE5 as CLK
#else
#define WS_CLK_BIT 3 // USE PE3 as CLK
#endif
/******************************************
Menu
*****************************************/
static const char wsMenuItem5[] PROGMEM = "Write WitchOS";
static const char *const menuOptionsWS[] PROGMEM = { FSTRING_READ_ROM, FSTRING_READ_SAVE, FSTRING_WRITE_SAVE, FSTRING_RESET, wsMenuItem5 };
static const uint8_t wwLaunchCode[] PROGMEM = { 0xea, 0x00, 0x00, 0x00, 0xe0, 0x00, 0xff, 0xff };
static uint8_t wsGameOrientation = 0;
static uint8_t wsGameHasRTC = 0;
static uint16_t wsGameChecksum = 0;
static uint8_t wsEepromShiftReg[2];
static boolean wsWitch = false;
void setup_WS() {
// Request 3.3V
setVoltage(VOLTS_SET_3V3);
// A-1 - A6
DDRF = 0xff;
// A7 - A14
DDRK = 0xff;
// A15 - A22
DDRL = 0xff;
// D0 - D15
DDRC = 0x00;
DDRA = 0x00;
// controls
DDRH |= ((1 << 0) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6));
PORTH |= ((1 << 0) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6));
// CLK outputs LOW
DDRE |= (1 << WS_CLK_BIT);
PORTE &= ~(1 << WS_CLK_BIT);
// IO? as input with internal pull-up enabled
DDRE &= ~(1 << 4);
PORTE |= (1 << 4);
// INT as input with internal pull-up enabled
DDRG &= ~(1 << 5);
PORTG |= (1 << 5);
// unlock MMC
// if (!unlockMMC2003_WS())
// print_FatalError(F("Can't initial MMC"));
// if (getCartInfo_WS() != 0xea)
// print_FatalError(F("Rom header read error"));
println_Msg(F("Initializing..."));
display_Update();
do {
unlockMMC2003_WS();
} while (!headerCheck());
getCartInfo_WS();
showCartInfo_WS();
}
static boolean headerCheck() {
dataIn_WS();
for (uint32_t i = 0; i < 16; i += 2)
*((uint16_t *)(sdBuffer + i)) = readWord_WS(0xffff0 + i);
uint8_t startByte = sdBuffer[0];
if (startByte == 0xEA) { // Start should be 0xEA
uint8_t zeroByte = sdBuffer[5];
if (zeroByte == 0) { // Zero Byte
uint8_t systemByte = sdBuffer[7];
if (systemByte < 2) { // System < 2
uint8_t revisionByte = sdBuffer[9];
if ((revisionByte < 7) || (revisionByte == 0x80)) { // Known Revisions: 0 to 6 and 0x80
uint8_t sizeByte = sdBuffer[10];
if (sizeByte < 10) // Rom Size < 10
return true;
}
}
}
}
return false;
}
void wsMenu() {
uint8_t mainMenu = (wsWitch ? 5 : 4);
convertPgm(menuOptionsWS, mainMenu);
mainMenu = question_box(F("WS Menu"), menuOptions, mainMenu, 0);
switch (mainMenu) {
case 0:
{
// Read Rom
sd.chdir("/");
compareChecksum_WS(readROM_WS(filePath, FILEPATH_LENGTH));
sd.chdir("/");
break;
}
case 1:
{
// Read Save
sd.chdir("/");
switch (saveType) {
case 0: println_Msg(F("No save for this game")); break;
case 1: readSRAM_WS(); break;
case 2: readEEPROM_WS(); break;
default: println_Msg(F("Unknown save type")); break;
}
break;
}
case 2:
{
// Write Save
sd.chdir("/");
switch (saveType) {
case 0: println_Msg(F("No save for this game")); break;
case 1:
{
writeSRAM_WS();
verifySRAM_WS();
break;
}
case 2:
{
writeEEPROM_WS();
verifyEEPROM_WS();
break;
}
default: println_Msg(F("Unknown save type")); break;
}
break;
}
case 4:
{
writeWitchOS_WS();
break;
}
default:
{
// reset
asm volatile(" jmp 0");
break;
}
}
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();
}
static uint8_t getCartInfo_WS() {
dataIn_WS();
// for (uint32_t i = 0; i < 16; i += 2)
// *((uint16_t*)(sdBuffer + i)) = readWord_WS(0xffff0 + i);
wsGameChecksum = *(uint16_t *)(sdBuffer + 14);
wsWitch = false;
// some game has wrong info in header
// patch here
switch (wsGameChecksum) {
// games with wrong save type/size
// 256kbits sram
case 0xe600: // BAN007
case 0x8eed: // BANC16
case 0xee90: // WIZC01
{
sdBuffer[11] = 0x02;
break;
}
// games missing 'COLOR' flag
case 0x26db: // SQRC01
case 0xbfdf: // SUMC07
case 0x50ca: // BANC09
case 0x9238: // BANC0E
case 0x04F1: // BANC1A
{
sdBuffer[7] |= 0x01;
break;
}
case 0x7f73: // BAN030
{
// missing developerId and cartId
sdBuffer[6] = 0x01;
sdBuffer[8] = 0x30;
break;
}
case 0xeafd: //BANC33
{
// enable GPIO and set to LOW
dataOut_WS();
writeByte_WSPort(0xcc, 0x03);
writeByte_WSPort(0xcd, 0x00);
break;
}
case 0x0000:
{
// developerId/cartId/checksum are all filled with 0x00 in witch based games
dataIn_WS();
if (readWord_WS(0xf0000) == 0x4c45 && readWord_WS(0xf0002) == 0x5349 && readWord_WS(0xf0004) == 0x0041) {
// check witch BIOS
if (readWord_WS(0xfff5e) == 0x006c && readWord_WS(0xfff60) == 0x5b1b) {
// check flashchip
// should be a MBM29DL400TC
dataOut_WS();
writeWord_WS(0x80aaa, 0xaaaa);
writeWord_WS(0x80555, 0x5555);
writeWord_WS(0x80aaa, 0x9090);
dataIn_WS();
if (readWord_WS(0x80000) == 0x0004 && readWord_WS(0x80002) == 0x220c)
wsWitch = true;
dataOut_WS();
writeWord_WS(0x80000, 0xf0f0);
dataIn_WS();
// 7AC003
sdBuffer[6] = 0x7a;
sdBuffer[8] = 0x03;
}
// check service menu
else if (readWord_WS(0xfff22) == 0x006c && readWord_WS(0xfff24) == 0x5b1b) {
if (readWord_WS(0x93246) == 0x4a2f && readWord_WS(0x93248) == 0x5353 && readWord_WS(0x9324a) == 0x2e32) {
// jss2
sdBuffer[6] = 0xff; // WWGP
sdBuffer[8] = 0x1a; // 2001A
sdBuffer[7] = 0x01; // color only
sdBuffer[10] = 0x04; // size based on ROM chip capacity
if (readWord_WS(0x93e9c) == 0x4648 && readWord_WS(0x93e9e) == 0x0050) {
// WWGP2001A3 -> HFP Version
sdBuffer[9] = 0x03;
wsGameChecksum = 0x4870;
} else {
// TODO check other jss2 version
}
} else if (readWord_WS(0xe4260) == 0x6b64 && readWord_WS(0xe4262) == 0x696e) {
// dknight
sdBuffer[6] = 0xff; // WWGP
sdBuffer[8] = 0x2b; // 2002B
sdBuffer[7] = 0x01; // color only
sdBuffer[9] = 0x00;
sdBuffer[10] = 0x04; // size based on ROM chip (MR27V1602) capacity
wsGameChecksum = 0x8b1c;
}
}
} else if (sdBuffer[6] == 0x2a && sdBuffer[8] == 0x01 && sdBuffer[9] == 0x01) {
// Mobile WonderGate v1.1, checksum is filled with 0x0000
wsGameChecksum = 0x1da0;
}
break;
}
}
romType = (sdBuffer[7] & 0x01); // wsc only = 1
romVersion = sdBuffer[9];
romSize = sdBuffer[10];
sramSize = sdBuffer[11];
wsGameOrientation = (sdBuffer[12] & 0x01);
wsGameHasRTC = (sdBuffer[13] & 0x01);
getDeveloperName_WS(sdBuffer[6], vendorID, 5);
snprintf(cartID, 5, "%c%02X", (romType ? 'C' : '0'), sdBuffer[8]);
snprintf(checksumStr, 5, "%04X", wsGameChecksum);
snprintf(romName, 17, "%s%s", vendorID, cartID);
switch (romSize) {
case 0x01: cartSize = 131072 * 2; break;
case 0x02: cartSize = 131072 * 4; break;
case 0x03: cartSize = 131072 * 8; break;
case 0x04: cartSize = 131072 * 16; break;
// case 0x05: cartSize = 131072 * 24; break;
case 0x06: cartSize = 131072 * 32; break;
// case 0x07: cartSize = 131072 * 48; break;
case 0x08: cartSize = 131072 * 64; break;
case 0x09: cartSize = 131072 * 128; break;
default: cartSize = 0; break;
}
switch (sramSize) {
case 0x00:
saveType = 0;
sramSize = 0;
break;
case 0x01:
saveType = 1;
sramSize = 64;
break;
case 0x02:
saveType = 1;
sramSize = 256;
break;
case 0x03:
saveType = 1;
sramSize = 1024;
break;
case 0x04:
saveType = 1;
sramSize = 2048;
break;
case 0x05:
saveType = 1;
sramSize = 4096;
break;
case 0x10:
saveType = 2;
sramSize = 1;
break;
case 0x20:
saveType = 2;
sramSize = 16;
break;
case 0x50:
saveType = 2;
sramSize = 8;
break;
default:
saveType = 0xff;
break;
}
if (saveType == 2)
unprotectEEPROM_WS();
// should be 0xea (JMPF instruction)
return sdBuffer[0];
}
static void showCartInfo_WS() {
display_Clear();
println_Msg(F("Cart Info"));
print_Msg(F("Game: "));
println_Msg(romName);
print_Msg(F("Rom Size: "));
if (cartSize == 0x00)
println_Msg(romSize, HEX);
else {
print_Msg((cartSize >> 17));
println_Msg(F(" Mb"));
}
print_Msg(F("Save: "));
switch (saveType) {
case 0: println_Msg(F("None")); break;
case 1:
print_Msg(F("Sram "));
print_Msg(sramSize);
println_Msg(F(" Kb"));
break;
case 2:
print_Msg(F("Eeprom "));
print_Msg(sramSize);
println_Msg(F(" Kb"));
break;
default: println_Msg(sramSize, HEX); break;
}
print_Msg(F("Version: 1."));
println_Msg(romVersion, HEX);
print_Msg(F("Checksum: "));
println_Msg(checksumStr);
// Prints string out of the common strings array either with or without newline
print_STR(press_button_STR, 1);
display_Update();
wait();
}
static void getDeveloperName_WS(uint8_t id, char *buf, size_t length) {
if (buf == NULL)
return;
char *devName = NULL;
switch (id) {
case 0x01: devName = PSTR("BAN"); break;
case 0x02: devName = PSTR("TAT"); break;
case 0x03: devName = PSTR("TMY"); break;
case 0x04: devName = PSTR("KEX"); break;
case 0x05: devName = PSTR("DTE"); break;
case 0x06: devName = PSTR("AAE"); break;
case 0x07: devName = PSTR("MDE"); break;
case 0x08: devName = PSTR("NHB"); break;
case 0x0a: devName = PSTR("CCJ"); break;
case 0x0b: devName = PSTR("SUM"); break;
case 0x0c: devName = PSTR("SUN"); break;
case 0x0d: devName = PSTR("PAW"); break;
case 0x0e: devName = PSTR("BPR"); break;
case 0x10: devName = PSTR("JLC"); break;
case 0x11: devName = PSTR("MGA"); break;
case 0x12: devName = PSTR("KNM"); break;
case 0x16: devName = PSTR("KBS"); break;
case 0x17: devName = PSTR("BTM"); break;
case 0x18: devName = PSTR("KGT"); break;
case 0x19: devName = PSTR("SRV"); break;
case 0x1a: devName = PSTR("CFT"); break;
case 0x1b: devName = PSTR("MGH"); break;
case 0x1d: devName = PSTR("BEC"); break;
case 0x1e: devName = PSTR("NAP"); break;
case 0x1f: devName = PSTR("BVL"); break;
case 0x20: devName = PSTR("ATN"); break;
case 0x21: devName = PSTR("KDX"); break; // KDK for Memories of Festa?
case 0x22: devName = PSTR("HAL"); break;
case 0x23: devName = PSTR("YKE"); break;
case 0x24: devName = PSTR("OMM"); break;
case 0x25: devName = PSTR("LAY"); break;
case 0x26: devName = PSTR("KDK"); break;
case 0x27: devName = PSTR("SHL"); break;
case 0x28: devName = PSTR("SQR"); break;
case 0x2a: devName = PSTR("SCC"); break;
case 0x2b: devName = PSTR("TMC"); break;
case 0x2d: devName = PSTR("NMC"); break;
case 0x2e: devName = PSTR("SES"); break;
case 0x2f: devName = PSTR("HTR"); break;
case 0x31: devName = PSTR("VGD"); break;
case 0x33: devName = PSTR("WIZ"); break;
case 0x36: devName = PSTR("CPC"); break;
// custom developerId
case 0x7a: devName = PSTR("7AC"); break; // witch
case 0xff:
devName = PSTR("WWGP");
break; // WWGP series (jss2, dknight)
// if not found, use id
default: snprintf(buf, length, "%02X", id); return;
}
strlcpy_P(buf, devName, length);
}
static uint16_t readROM_WS(char *outPathBuf, size_t bufferSize) {
// generate fullname of rom file
snprintf(fileName, FILENAME_LENGTH, "%s.ws%c", romName, ((romType & 1) ? 'c' : '\0'));
// create a new folder for storing rom file
EEPROM_readAnything(0, foldern);
snprintf(folder, sizeof(folder), "WS/ROM/%s/%d", romName, foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
// filling output file path to buffer
if (outPathBuf != NULL && bufferSize > 0)
snprintf(outPathBuf, bufferSize, "%s/%s", folder, fileName);
display_Clear();
print_STR(saving_to_STR, 0);
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
// open file on sdcard
if (!myFile.open(fileName, O_RDWR | O_CREAT))
print_FatalError(create_file_STR);
// write new folder number back to EEPROM
foldern++;
EEPROM_writeAnything(0, foldern);
// get correct starting rom bank
uint16_t bank = (256 - (cartSize >> 16));
uint32_t progress = 0;
uint16_t checksum = 0;
draw_progressbar(0, cartSize);
// start reading rom
for (; bank <= 0xff; bank++) {
// switch bank on segment 0x2
dataOut_WS();
writeByte_WSPort(0xc2, bank);
// blink LED on cartridge (only for BANC33)
if (wsGameChecksum == 0xeafd)
writeByte_WSPort(0xcd, (bank & 0x03));
dataIn_WS();
for (uint32_t addr = 0; addr < 0x10000; addr += 512) {
// blink LED
if ((addr & ((1 << 14) - 1)) == 0)
blinkLED();
for (uint32_t w = 0; w < 512; w += 2) {
*((uint16_t *)(sdBuffer + w)) = readWord_WS(0x20000 + addr + w);
// only calculate last two banks of checksum (os and bios region)
if (wsWitch && bank < 0xfe)
continue;
// skip last two bytes of rom (checksum value)
if (w == 510 && progress == cartSize - 512)
continue;
checksum += sdBuffer[w];
checksum += sdBuffer[w + 1];
}
myFile.write(sdBuffer, 512);
progress += 512;
}
draw_progressbar(progress, cartSize);
}
myFile.close();
// turn off LEDs (only for BANC33)
if (wsGameChecksum == 0xeafd) {
dataOut_WS();
writeByte_WSPort(0xcd, 0x00);
}
return checksum;
}
static void readSRAM_WS() {
// generate fullname of rom file
createFolder("WS", "SAVE", romName, "save");
display_Clear();
print_Msg(F("Saving "));
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
foldern++;
EEPROM_writeAnything(0, foldern);
if (!myFile.open(fileName, O_RDWR | O_CREAT))
print_FatalError(create_file_STR);
uint32_t bank_size = (sramSize << 7);
uint16_t end_bank = (bank_size >> 16); // 64KB per bank
if (bank_size > 0x10000)
bank_size = 0x10000;
uint16_t bank = 0;
do {
dataOut_WS();
writeByte_WSPort(0xc1, bank);
dataIn_WS();
for (uint32_t addr = 0; addr < bank_size; addr += 512) {
// blink LED
if ((addr & ((1 << 14) - 1)) == 0)
blinkLED();
// SRAM data on D0-D7, with A-1 to select high/low byte
for (uint32_t w = 0; w < 512; w++)
sdBuffer[w] = readByte_WS(0x10000 + addr + w);
myFile.write(sdBuffer, 512);
}
} while (++bank < end_bank);
myFile.close();
print_STR(done_STR, 1);
display_Update();
}
static void verifySRAM_WS() {
print_Msg(F("Verifying... "));
display_Update();
if (myFile.open(filePath, O_READ)) {
uint32_t bank_size = (sramSize << 7);
uint16_t end_bank = (bank_size >> 16); // 64KB per bank
uint16_t bank = 0;
uint32_t write_errors = 0;
if (bank_size > 0x10000)
bank_size = 0x10000;
do {
dataOut_WS();
writeByte_WSPort(0xc1, bank);
dataIn_WS();
for (uint32_t addr = 0; addr < bank_size && myFile.available(); addr += 512) {
myFile.read(sdBuffer, 512);
// SRAM data on D0-D7, with A-1 to select high/low byte
for (uint32_t w = 0; w < 512; w++) {
if (readByte_WS(0x10000 + addr + w) != sdBuffer[w])
write_errors++;
}
}
} while (++bank < end_bank);
myFile.close();
if (write_errors == 0) {
println_Msg(F("passed"));
} else {
println_Msg(F("failed"));
print_STR(error_STR, 0);
print_Msg(write_errors);
print_STR(_bytes_STR, 1);
print_Error(did_not_verify_STR);
}
} else {
print_Error(FS(FSTRING_FILE_DOESNT_EXIST));
}
}
static void writeSRAM_WS() {
filePath[0] = 0;
sd.chdir("/");
fileBrowser(F("Select sav file"));
snprintf(filePath, FILEPATH_LENGTH, "%s/%s", filePath, fileName);
display_Clear();
print_Msg(F("Writing "));
print_Msg(filePath);
println_Msg(F("..."));
display_Update();
if (myFile.open(filePath, O_READ)) {
uint32_t bank_size = (sramSize << 7);
uint16_t end_bank = (bank_size >> 16); // 64KB per bank
if (bank_size > 0x10000)
bank_size = 0x10000;
uint16_t bank = 0;
dataOut_WS();
do {
writeByte_WSPort(0xc1, bank);
for (uint32_t addr = 0; addr < bank_size && myFile.available(); addr += 512) {
// blink LED
if ((addr & ((1 << 14) - 1)) == 0)
blinkLED();
myFile.read(sdBuffer, 512);
// SRAM data on D0-D7, with A-1 to select high/low byte
for (uint32_t w = 0; w < 512; w++)
writeByte_WS(0x10000 + addr + w, sdBuffer[w]);
}
} while (++bank < end_bank);
myFile.close();
println_Msg(F("Writing finished"));
display_Update();
} else {
print_Error(FS(FSTRING_FILE_DOESNT_EXIST));
}
}
static void readEEPROM_WS() {
// generate fullname of eep file
createFolder("WS", "SAVE", romName, "eep");
display_Clear();
print_Msg(F("Saving "));
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
foldern++;
EEPROM_writeAnything(0, foldern);
if (!myFile.open(fileName, O_RDWR | O_CREAT))
print_FatalError(create_file_STR);
uint32_t eepromSize = (sramSize << 7);
uint32_t bufSize = (eepromSize < 512 ? eepromSize : 512);
for (uint32_t i = 0; i < eepromSize; i += bufSize) {
for (uint32_t j = 0; j < bufSize; j += 2) {
// blink LED
if ((j & 0x1f) == 0x00)
blinkLED();
generateEepromInstruction_WS(wsEepromShiftReg, 0x2, ((i + j) >> 1));
dataOut_WS();
writeByte_WSPort(0xc6, wsEepromShiftReg[0]);
writeByte_WSPort(0xc7, wsEepromShiftReg[1]);
writeByte_WSPort(0xc8, 0x10);
// MMC will shift out from port 0xc7 to 0xc6
// and shift in 16bits into port 0xc5 to 0xc4
pulseCLK_WS(1 + 32 + 3);
dataIn_WS();
sdBuffer[j] = readByte_WSPort(0xc4);
sdBuffer[j + 1] = readByte_WSPort(0xc5);
}
myFile.write(sdBuffer, bufSize);
}
myFile.close();
print_STR(done_STR, 1);
}
static void verifyEEPROM_WS() {
print_Msg(F("Verifying... "));
display_Update();
if (myFile.open(filePath, O_READ)) {
uint32_t write_errors = 0;
uint32_t eepromSize = (sramSize << 7);
uint32_t bufSize = (eepromSize < 512 ? eepromSize : 512);
for (uint32_t i = 0; i < eepromSize; i += bufSize) {
myFile.read(sdBuffer, bufSize);
for (uint32_t j = 0; j < bufSize; j += 2) {
// blink LED
if ((j & 0x1f) == 0x00)
blinkLED();
generateEepromInstruction_WS(wsEepromShiftReg, 0x2, ((i + j) >> 1));
dataOut_WS();
writeByte_WSPort(0xc6, wsEepromShiftReg[0]);
writeByte_WSPort(0xc7, wsEepromShiftReg[1]);
writeByte_WSPort(0xc8, 0x10);
// MMC will shift out from port 0xc7 to 0xc6
// and shift in 16bits into port 0xc5 to 0xc4
pulseCLK_WS(1 + 32 + 3);
dataIn_WS();
if (readByte_WSPort(0xc4) != sdBuffer[j])
write_errors++;
if (readByte_WSPort(0xc5) != sdBuffer[j + 1])
write_errors++;
}
}
myFile.close();
if (write_errors == 0) {
println_Msg(F("passed"));
} else {
println_Msg(F("failed"));
print_STR(error_STR, 0);
print_Msg(write_errors);
print_STR(_bytes_STR, 1);
print_Error(did_not_verify_STR);
}
} else {
print_Error(FS(FSTRING_FILE_DOESNT_EXIST));
}
}
static void writeEEPROM_WS() {
filePath[0] = 0;
sd.chdir("/");
fileBrowser(F("Select eep file"));
snprintf(filePath, FILEPATH_LENGTH, "%s/%s", filePath, fileName);
display_Clear();
print_Msg(F("Writing "));
print_Msg(filePath);
println_Msg(F("..."));
display_Update();
if (myFile.open(filePath, O_READ)) {
uint32_t eepromSize = (sramSize << 7);
uint32_t bufSize = (eepromSize < 512 ? eepromSize : 512);
for (uint32_t i = 0; i < eepromSize; i += bufSize) {
myFile.read(sdBuffer, bufSize);
for (uint32_t j = 0; j < bufSize; j += 2) {
// blink LED
if ((j & 0x1f) == 0x00)
blinkLED();
generateEepromInstruction_WS(wsEepromShiftReg, 0x1, ((i + j) >> 1));
dataOut_WS();
writeByte_WSPort(0xc6, wsEepromShiftReg[0]);
writeByte_WSPort(0xc7, wsEepromShiftReg[1]);
writeByte_WSPort(0xc4, sdBuffer[j]);
writeByte_WSPort(0xc5, sdBuffer[j + 1]);
writeByte_WSPort(0xc8, 0x20);
// MMC will shift out from port 0xc7 to 0xc4
pulseCLK_WS(1 + 32 + 3);
dataIn_WS();
do {
pulseCLK_WS(128);
} while ((readByte_WSPort(0xc8) & 0x02) == 0x00);
}
}
myFile.close();
print_STR(done_STR, 1);
} else {
print_Error(FS(FSTRING_FILE_DOESNT_EXIST));
}
}
static void writeWitchOS_WS() {
// make sure that OS sectors not protected
dataOut_WS();
writeWord_WS(0x80aaa, 0xaaaa);
writeWord_WS(0x80555, 0x5555);
writeWord_WS(0xe0aaa, 0x9090);
dataIn_WS();
if (readWord_WS(0xe0004) || readWord_WS(0xe4004) || readWord_WS(0xec004) || readWord_WS(0xee004)) {
display_Clear();
print_Error(F("OS sectors are protected!"));
} else {
filePath[0] = 0;
sd.chdir("/");
fileBrowser(F("Select fbin file"));
snprintf(filePath, FILEPATH_LENGTH, "%s/%s", filePath, fileName);
display_Clear();
if (myFile.open(filePath, O_READ)) {
println_Msg(F("Erasing OS..."));
display_Update();
eraseWitchFlashSector_WS(0xe0000);
eraseWitchFlashSector_WS(0xe4000);
eraseWitchFlashSector_WS(0xec000);
eraseWitchFlashSector_WS(0xee000);
print_Msg(F("Flashing OS "));
print_Msg(filePath);
println_Msg(F("..."));
display_Update();
uint32_t fbin_length = myFile.fileSize();
uint32_t i, bytes_read;
uint16_t pd;
uint8_t key;
// OS size seems limit to 64KBytes
// last 16 bytes contains jmpf code and block count (written by BIOS)
if (fbin_length > 65520)
fbin_length = 65520;
// enter fast program mode
dataOut_WS();
writeWord_WS(0x80aaa, 0xaaaa);
writeWord_WS(0x80555, 0x5555);
writeWord_WS(0x80aaa, 0x2020);
// 128bytes per block
for (i = 0; i < fbin_length; i += 128) {
// blink LED
if ((i & 0x3ff) == 0)
blinkLED();
// reset key
key = 0xff;
bytes_read = myFile.read(sdBuffer, 128);
for (uint32_t j = 0; j < bytes_read; j += 2) {
// for each decoded[n] = encoded[n] ^ key
// where key = encoded[n - 1]
// key = 0xff when n = 0, 0 <= n < 128
pd = ((sdBuffer[j] ^ key) | ((sdBuffer[j + 1] ^ sdBuffer[j]) << 8));
key = sdBuffer[j + 1];
fastProgramWitchFlash_WS(0xe0000 + i + j, pd);
}
}
// write jmpf instruction and block counts at 0xe0000
memcpy_P(sdBuffer, wwLaunchCode, 8);
*((uint16_t *)(sdBuffer + 6)) = ((i >> 7) & 0xffff);
for (uint32_t i = 0; i < 8; i += 2)
fastProgramWitchFlash_WS(0xefff0 + i, *((uint16_t *)(sdBuffer + i)));
// leave fast program mode
dataOut_WS();
writeWord_WS(0xe0000, 0x9090);
writeWord_WS(0xe0000, 0xf0f0);
myFile.close();
print_STR(done_STR, 1);
} else {
print_Error(FS(FSTRING_FILE_DOESNT_EXIST));
}
}
dataOut_WS();
writeWord_WS(0x80000, 0xf0f0);
}
static void fastProgramWitchFlash_WS(uint32_t addr, uint16_t data) {
dataOut_WS();
writeWord_WS(addr, 0xa0a0);
writeWord_WS(addr, data);
dataIn_WS();
while (readWord_WS(addr) != data)
;
}
static void eraseWitchFlashSector_WS(uint32_t sector_addr) {
// blink LED
blinkLED();
dataOut_WS();
writeWord_WS(0x80aaa, 0xaaaa);
writeWord_WS(0x80555, 0x5555);
writeWord_WS(0x80aaa, 0x8080);
writeWord_WS(0x80aaa, 0xaaaa);
writeWord_WS(0x80555, 0x5555);
writeWord_WS(sector_addr, 0x3030);
dataIn_WS();
while ((readWord_WS(sector_addr) & 0x0080) == 0x0000)
;
}
static boolean compareChecksum_WS(uint16_t checksum) {
char result[11];
snprintf(result, 11, "%04X(%04X)", wsGameChecksum, checksum);
print_Msg(F("Result: "));
print_Msg(result);
if (checksum == wsGameChecksum) {
println_Msg(F(" matches."));
// Compare CRC32 to database and rename ROM if found
// Arguments: database name, precalculated crc string or 0 to calculate, rename rom or not, starting offset
compareCRC("ws.txt", 0, 1, 0);
return 1;
} else {
println_Msg(FS(FSTRING_EMPTY));
print_Error(F("Checksum Error"));
return 0;
}
}
static void writeByte_WSPort(uint8_t port, uint8_t data) {
PORTF = (port & 0x0f);
PORTL = (port >> 4);
// switch CART(PH3), MMC(PH4) to LOW
PORTH &= ~((1 << 3) | (1 << 4));
// set data
PORTC = data;
// switch WE(PH5) to LOW
PORTH &= ~(1 << 5);
NOP;
// switch WE(PH5) to HIGH
PORTH |= (1 << 5);
NOP;
NOP;
// switch CART(PH3), MMC(PH4) to HIGH
PORTH |= ((1 << 3) | (1 << 4));
}
static uint8_t readByte_WSPort(uint8_t port) {
PORTF = (port & 0x0f);
PORTL = (port >> 4);
// switch CART(PH3), MMC(PH4) to LOW
PORTH &= ~((1 << 3) | (1 << 4));
// switch OE(PH6) to LOW
PORTH &= ~(1 << 6);
NOP;
NOP;
NOP;
uint8_t ret = PINC;
// switch OE(PH6) to HIGH
PORTH |= (1 << 6);
// switch CART(PH3), MMC(PH4) to HIGH
PORTH |= ((1 << 3) | (1 << 4));
return ret;
}
static void writeWord_WS(uint32_t addr, uint16_t data) {
PORTF = addr & 0xff;
PORTK = (addr >> 8) & 0xff;
PORTL = (addr >> 16) & 0x0f;
PORTC = data & 0xff;
PORTA = (data >> 8);
// switch CART(PH3) and WE(PH5) to LOW
PORTH &= ~((1 << 3) | (1 << 5));
NOP;
// switch CART(PH3) and WE(PH5) to HIGH
PORTH |= (1 << 3) | (1 << 5);
NOP;
NOP;
}
static uint16_t readWord_WS(uint32_t addr) {
PORTF = addr & 0xff;
PORTK = (addr >> 8) & 0xff;
PORTL = (addr >> 16) & 0x0f;
// switch CART(PH3) and OE(PH6) to LOW
PORTH &= ~((1 << 3) | (1 << 6));
NOP;
NOP;
NOP;
uint16_t ret = ((PINA << 8) | PINC);
// switch CART(PH3) and OE(PH6) to HIGH
PORTH |= (1 << 3) | (1 << 6);
return ret;
}
static void writeByte_WS(uint32_t addr, uint8_t data) {
PORTF = addr & 0xff;
PORTK = (addr >> 8) & 0xff;
PORTL = (addr >> 16) & 0x0f;
PORTC = data;
// switch CART(PH3) and WE(PH5) to LOW
PORTH &= ~((1 << 3) | (1 << 5));
NOP;
// switch CART(PH3) and WE(PH5) to HIGH
PORTH |= (1 << 3) | (1 << 5);
NOP;
NOP;
}
static uint8_t readByte_WS(uint32_t addr) {
PORTF = addr & 0xff;
PORTK = (addr >> 8) & 0xff;
PORTL = (addr >> 16) & 0x0f;
// switch CART(PH3) and OE(PH6) to LOW
PORTH &= ~((1 << 3) | (1 << 6));
NOP;
NOP;
NOP;
uint8_t ret = PINC;
// switch CART(PH3) and OE(PH6) to HIGH
PORTH |= (1 << 3) | (1 << 6);
return ret;
}
static void unprotectEEPROM_WS() {
generateEepromInstruction_WS(wsEepromShiftReg, 0x0, 0x3);
dataOut_WS();
writeByte_WSPort(0xc6, wsEepromShiftReg[0]);
writeByte_WSPort(0xc7, wsEepromShiftReg[1]);
writeByte_WSPort(0xc8, 0x40);
// MMC will shift out port 0xc7 to 0xc6 to EEPROM
pulseCLK_WS(1 + 16 + 3);
}
// generate data for port 0xc6 to 0xc7
// number of CLK pulses needed for each instruction is 1 + (16 or 32) + 3
static void generateEepromInstruction_WS(uint8_t *instruction, uint8_t opcode, uint16_t addr) {
uint8_t addr_bits = (sramSize > 1 ? 10 : 6);
uint16_t *ptr = (uint16_t *)instruction;
*ptr = 0x0001; // initial with a start bit
if (opcode == 0) {
// 2bits opcode = 0x00
*ptr <<= 2;
// 2bits ext cmd (from addr)
*ptr <<= 2;
*ptr |= (addr & 0x0003);
*ptr <<= (addr_bits - 2);
} else {
// 2bits opcode
*ptr <<= 2;
*ptr |= (opcode & 0x03);
// address bits
*ptr <<= addr_bits;
*ptr |= (addr & ((1 << addr_bits) - 1));
}
}
// 2003 MMC need to be unlock,
// or it will reject all reading and bank switching
// All signals' timing are analyzed by using LogicAnalyzer
static boolean unlockMMC2003_WS() {
// initialize all control pin state
// RST(PH0) and CLK(PE3or5) to LOW
// CART(PH3) MMC(PH4) WE(PH5) OE(PH6) to HIGH
PORTH &= ~(1 << 0);
PORTE &= ~(1 << WS_CLK_BIT);
PORTH |= ((1 << 3) | (1 << 4) | (1 << 5) | (1 << 6));
// switch RST(PH0) to HIGH
PORTH |= (1 << 0);
PORTF = 0x0a;
PORTL = 0x05;
pulseCLK_WS(3);
PORTF = 0x05;
PORTL = 0x0a;
pulseCLK_WS(4);
// MMC is outputing something on IO? pin synchronized with CLK
// so still need to pulse CLK until MMC is ok to work
pulseCLK_WS(18);
// unlock procedure finished
// see if we can set bank number to MMC
dataOut_WS();
writeByte_WSPort(0xc2, 0xaa);
writeByte_WSPort(0xc3, 0x55);
dataIn_WS();
if (readByte_WSPort(0xc2) == 0xaa && readByte_WSPort(0xc3) == 0x55) {
// now set initial bank number to MMC
dataOut_WS();
writeByte_WSPort(0xc0, 0x2f);
writeByte_WSPort(0xc1, 0x3f);
writeByte_WSPort(0xc2, 0xff);
writeByte_WSPort(0xc3, 0xff);
return true;
}
return false;
}
// doing a L->H on CLK pin
static void pulseCLK_WS(uint8_t count) {
register uint8_t tic;
// about 384KHz, 50% duty cycle
asm volatile("L0_%=:\n\t"
"cpi %[count], 0\n\t"
"breq L3_%=\n\t"
"dec %[count]\n\t"
"cbi %[porte], %[ws_clk_bit]\n\t"
"ldi %[tic], 6\n\t"
"L1_%=:\n\t"
"dec %[tic]\n\t"
"brne L1_%=\n\t"
"sbi %[porte], %[ws_clk_bit]\n\t"
"ldi %[tic], 5\n\t"
"L2_%=:\n\t"
"dec %[tic]\n\t"
"brne L2_%=\n\t"
"rjmp L0_%=\n\t"
"L3_%=:\n\t"
: [tic] "=a"(tic)
: [count] "a"(count), [porte] "I"(_SFR_IO_ADDR(PORTE)), [ws_clk_bit] "I"(WS_CLK_BIT));
}
static void dataIn_WS() {
DDRC = 0x00;
DDRA = 0x00;
// some game's ROM chip needs internal-pullup be disabled to work properly
// ex: Mobile Suit Gundam Vol.2 - JABURO (MX23L6410MC-12 Mask ROM)
PORTC = 0x00;
PORTA = 0x00;
}
static void dataOut_WS() {
DDRC = 0xff;
DDRA = 0xff;
}
#endif
//******************************************
// End of File
//******************************************
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