//****************************************** // NES MODULE //****************************************** // mostly copy&pasted from "Famicom Dumper" 2019-08-31 by skaman // also based on "CoolArduino" by HardWareMan // Pinout changes: LED and CIRAM_A10 #include "options.h" #ifdef enable_NES #include "atoi32.h" //Line Content //28 Supported Mappers //103 Defines //133 Variables //194 Menu //313 Setup //342 Low Level Functions //589 CRC Functions //649 File Functions //844 NES 2.0 Header Functions //1125 Config Functions //1721 ROM Functions //2819 RAM Functions //3248 Eeprom Functions //3444 NESmaker Flash Cart Functions /****************************************** Supported Mappers *****************************************/ // Supported Mapper Array (iNES Mapper #s) // Format = {mapper,prglo,prghi,chrlo,chrhi,ramlo,ramhi} static const byte PROGMEM mapsize [] = { 0, 0, 1, 0, 1, 0, 2, // nrom [sram r/w] 1, 1, 5, 0, 5, 0, 3, // mmc1 [sram r/w] 2, 3, 4, 0, 0, 0, 0, // uxrom 3, 0, 1, 0, 3, 0, 0, // cnrom 4, 1, 5, 0, 6, 0, 1, // mmc3/mmc6 [sram/prgram r/w] 5, 3, 5, 5, 7, 0, 3, // mmc5 [sram r/w] 7, 3, 4, 0, 0, 0, 0, // axrom 9, 3, 3, 5, 5, 0, 0, // mmc2 (punch out) 10, 3, 4, 4, 5, 1, 1, // mmc4 [sram r/w] 13, 1, 1, 0, 0, 0, 0, // cprom (videomation) 16, 3, 4, 5, 6, 0, 1, // bandai x24c02 [eep r/w] 18, 3, 4, 5, 6, 0, 1, // jaleco ss8806 [sram r/w] 19, 3, 4, 5, 6, 0, 1, // namco 106/163 [sram/prgram r/w] 21, 4, 4, 5, 6, 0, 1, // vrc4a/vrc4c [sram r/w] 22, 3, 3, 5, 5, 0, 0, // vrc2a 23, 3, 3, 5, 6, 0, 0, // vrc2b/vrc4e 24, 4, 4, 5, 5, 0, 0, // vrc6a (akumajou densetsu) 25, 3, 4, 5, 6, 0, 1, // vrc2c/vrc4b/vrc4d [sram r/w] 26, 4, 4, 5, 6, 1, 1, // vrc6b [sram r/w] 30, 4, 5, 0, 0, 0, 0, // unrom 512 (NESmaker) [UNLICENSED] 32, 3, 4, 5, 5, 0, 0, // irem g-101 33, 3, 4, 5, 6, 0, 0, // taito tc0190 34, 3, 3, 0, 0, 0, 0, // bnrom [nina-1 NOT SUPPORTED] 37, 4, 4, 6, 6, 0, 0, // (super mario bros + tetris + world cup) 47, 4, 4, 6, 6, 0, 0, // (super spike vball + world cup) 48, 3, 4, 6, 6, 0, 0, // taito tc0690 65, 3, 4, 5, 6, 0, 0, // irem h-3001 66, 2, 3, 2, 3, 0, 0, // gxrom/mhrom 67, 3, 3, 5, 5, 0, 0, // sunsoft 3 68, 3, 3, 5, 6, 0, 1, // sunsoft 4 [sram r/w] 69, 3, 4, 5, 6, 0, 1, // sunsoft fme-7/5a/5b [sram r/w] 70, 3, 3, 5, 5, 0, 0, // bandai 71, 2, 4, 0, 0, 0, 0, // camerica/codemasters [UNLICENSED] 72, 3, 3, 5, 5, 0, 0, // jaleco jf-17 73, 3, 3, 0, 0, 0, 0, // vrc3 (salamander) 75, 3, 3, 5, 5, 0, 0, // vrc1 76, 3, 3, 5, 5, 0, 0, // namco 109 variant (megami tensei: digital devil story) 77, 3, 3, 3, 3, 0, 0, // (napoleon senki) 78, 3, 3, 5, 5, 0, 0, // irem 74hc161/32 80, 3, 3, 5, 6, 0, 1, // taito x1-005 [prgram r/w] 82, 3, 3, 5, 6, 0, 1, // taito x1-017 [prgram r/w] 85, 3, 5, 0, 5, 0, 1, // vrc7 [sram r/w] 86, 3, 3, 4, 4, 0, 0, // jaleco jf-13 (moero pro yakyuu) 87, 0, 1, 2, 3, 0, 0, 88, 3, 3, 5, 5, 0, 0, // namco (dxrom variant) 89, 3, 3, 5, 5, 0, 0, // sunsoft 2 variant (tenka no goikenban: mito koumon) 92, 4, 4, 5, 5, 0, 0, // jaleco jf-19/jf-21 93, 3, 3, 0, 0, 0, 0, // sunsoft 2 94, 3, 3, 0, 0, 0, 0, // hvc-un1rom (senjou no ookami) 95, 3, 3, 3, 3, 0, 0, // namcot-3425 (dragon buster) 96, 3, 3, 0, 0, 0, 0, // (oeka kids) 97, 4, 4, 0, 0, 0, 0, // irem tam-s1 (kaiketsu yanchamaru) 105, 4, 4, 0, 0, 0, 0, // (nintendo world Championships 1990) [UNTESTED] 118, 3, 4, 5, 5, 0, 1, // txsrom/mmc3 [sram r/w] 119, 3, 3, 4, 4, 0, 0, // tqrom/mmc3 140, 3, 3, 3, 5, 0, 0, // jaleco jf-11/jf-14 152, 2, 3, 5, 5, 0, 0, 153, 5, 5, 0, 0, 1, 1, // (famicom jump ii) [sram r/w] 154, 3, 3, 5, 5, 0, 0, // namcot-3453 (devil man) 155, 3, 3, 3, 5, 0, 1, // mmc1 variant [sram r/w] 159, 3, 4, 5, 6, 1, 1, // bandai x24c01 [eep r/w] 180, 3, 3, 0, 0, 0, 0, // unrom variant (crazy climber) 184, 1, 1, 2, 3, 0, 0, // sunsoft 1 185, 0, 1, 1, 1, 0, 0, // cnrom lockout 206, 1, 3, 2, 4, 0, 0, // dxrom 207, 4, 4, 5, 5, 0, 0, // taito x1-005 variant (fudou myouou den) 210, 3, 5, 5, 6, 0, 0, // namco 175/340 }; /****************************************** Defines *****************************************/ #define ROMSEL_HI PORTF |= (1<<1) #define ROMSEL_LOW PORTF &= ~(1<<1) #define PHI2_HI PORTF |= (1<<0) #define PHI2_LOW PORTF &= ~(1<<0) #define PRG_READ PORTF |= (1<<7) #define PRG_WRITE PORTF &= ~(1<<7) #define CHR_READ_HI PORTF |= (1<<5) #define CHR_READ_LOW PORTF &= ~(1<<5) #define CHR_WRITE_HI PORTF |= (1<<2) #define CHR_WRITE_LOW PORTF &= ~(1<<2) // RGB LED COMMON ANODE #define LED_RED_OFF PORTB |= (1<<6) #define LED_RED_ON PORTB &= ~(1<<6) #define LED_GREEN_OFF PORTB |= (1<<5) #define LED_GREEN_ON PORTB &= ~(1<<5) #define LED_BLUE_OFF PORTB |= (1<<4) #define LED_BLUE_ON PORTB &= ~(1<<4) #define MODE_READ { PORTK = 0xFF; DDRK = 0; } #define MODE_WRITE DDRK = 0xFF #define press 1 #define doubleclick 2 #define hold 3 #define longhold 4 /****************************************** Variables *****************************************/ // Mapper byte mapcount = (sizeof(mapsize) / sizeof(mapsize[0])) / 7; boolean mapfound = false; byte mapselect; int PRG[] = {16, 32, 64, 128, 256, 512}; byte prglo = 0; // Lowest Entry byte prghi = 5; // Highest Entry int CHR[] = {0, 8, 16, 32, 64, 128, 256, 512}; byte chrlo = 0; // Lowest Entry byte chrhi = 7; // Highest Entry byte RAM[] = {0, 8, 16, 32}; byte ramlo = 0; // Lowest Entry byte ramhi = 3; // Highest Entry int banks; int prg; int chr; byte ram; boolean vrc4e = false; byte prgchk0; byte prgchk1; boolean mmc6 = false; byte prgchk2; byte prgchk3; int eepsize; byte bytecheck; byte firstbyte; char flashID[5]; boolean flashfound = false; // NESmaker 39SF040 Flash Cart // Files FsFile sdFile; char fileCount[3]; FsFile nesFile; uint32_t prg_crc32; uint32_t chr_crc32; char filePRG[] = "PRG.bin"; char fileCHR[] = "CHR.bin"; char fileNES[] = "CART.nes"; char fileBIN[] = "CART.bin"; // Cartridge Config byte mapper; byte newmapper; byte prgsize; byte newprgsize; byte chrsize; byte newchrsize; byte ramsize; byte newramsize; // Button int b = 0; /****************************************** Menu *****************************************/ static const char menuItem1[] PROGMEM = "Select Mapper"; static const char menuItem2[] PROGMEM = "Read Complete Cart"; static const char menuItem3[] PROGMEM = "Read PRG"; static const char menuItem4[] PROGMEM = "Read CHR"; static const char menuItem5[] PROGMEM = "Read RAM"; static const char menuItem6[] PROGMEM = "Write Options"; static const char* const baseMenu[] PROGMEM = {menuItem1, menuItem2, menuItem3, menuItem4, menuItem5, menuItem6}; static const char writeItem1[] PROGMEM = "Write RAM"; static const char writeItem2[] PROGMEM = "Write FLASH"; static const char writeItem3[] PROGMEM = "Return to Main Menu"; static const char* const writeMenu[] PROGMEM = {writeItem1, writeItem2, writeItem3}; // NES start menu void nesMenu() { display_Clear(); display_Update(); setup_NES(); checkStatus_NES(); nesCartMenu(); mode = mode_NES; } void nesCartMenu() { // create menu with title "NES CART READER" and 6 options to choose from convertPgm(baseMenu, 6); unsigned char answer = question_box(F("NES CART READER"), menuOptions, 6, 0); // wait for user choice to come back from the question box menu switch (answer) { // Select Mapper case 0: setMapper(); checkMapperSize(); setPRGSize(); setCHRSize(); setRAMSize(); break; // Read Complete Cart case 1: CartStart(); readPRG(); delay(2000); readCHR(); delay(2000); outputNES(); delay(2000); readRAM(); delay(2000); resetROM(); CartFinish(); break; // Read PRG case 2: CreateROMFolderInSD(); readPRG(); resetROM(); wait(); break; // Read CHR case 3: CreateROMFolderInSD(); readCHR(); resetROM(); wait(); break; // Read RAM case 4: CreateROMFolderInSD(); readRAM(); resetROM(); wait(); break; // Write Options case 5: nesCartWriteMenu(); wait(); break; } } void nesCartWriteMenu() { // create menu with title "WRITE OPTIONS MENU" and 3 options to choose from convertPgm(writeMenu, 3); unsigned char answer = question_box(F("WRITE OPTIONS MENU"), menuOptions, 3, 0); // wait for user choice to come back from the question box menu switch (answer) { // Write RAM case 0: writeRAM(); resetROM(); wait(); break; // Write FLASH case 1: if (mapper == 30) writeFLASH(); resetROM(); wait(); break; // Return to Main Menu case 2: nesCartMenu(); wait(); break; } } /****************************************** Setup *****************************************/ void setup_NES() { // CPU R/W, IRQ, PPU /RD, PPU /A13, CIRAM /CE, PPU /WR, /ROMSEL, PHI2 DDRF = 0b10110111; // CPU R/W, IRQ, PPU /RD, PPU /A13, CIRAM /CE, PPU /WR, /ROMSEL, PHI2 PORTF = 0b11111111; // A0-A7 to Output DDRL = 0xFF; // A8-A14 to Output DDRA = 0xFF; // Set CIRAM A10 to Input DDRC &= ~(1 << 2); // Activate Internal Pullup Resistors PORTC |= (1 << 2); // Set D0-D7 to Input PORTK = 0xFF; DDRK = 0; set_address(0); LED_RED_OFF; LED_GREEN_OFF; LED_BLUE_OFF; } /****************************************** Low Level Functions *****************************************/ static void phi2_init() { int i = 0x80; unsigned char h = PORTF |= (1 << 0); unsigned char l = PORTF &= ~(1 << 0); while (i != 0) { PORTL = l; PORTL = h; i--; } } static void set_address(unsigned int address) { unsigned char l = address & 0xFF; unsigned char h = address >> 8; PORTL = l; PORTA = h; // PPU /A13 if ((address >> 13) & 1) PORTF &= ~(1 << 4); else PORTF |= 1 << 4; } static void set_romsel(unsigned int address) { if (address & 0x8000) { ROMSEL_LOW; } else { ROMSEL_HI; } } static unsigned char read_prg_byte(unsigned int address) { MODE_READ; PRG_READ; set_address(address); PHI2_HI; set_romsel(address); _delay_us(1); return PINK; } static unsigned char read_chr_byte(unsigned int address) { MODE_READ; PHI2_HI; ROMSEL_HI; set_address(address); CHR_READ_LOW; _delay_us(1); uint8_t result = PINK; CHR_READ_HI; return result; } static void write_prg_byte(unsigned int address, uint8_t data) { PHI2_LOW; ROMSEL_HI; MODE_WRITE; PRG_WRITE; PORTK = data; set_address(address); // PHI2 low, ROMSEL always HIGH // _delay_us(1); PHI2_HI; //_delay_us(10); set_romsel(address); // ROMSEL is low if need, PHI2 high _delay_us(1); // WRITING //_delay_ms(1); // WRITING // PHI2 low, ROMSEL high PHI2_LOW; _delay_us(1); ROMSEL_HI; // Back to read mode // _delay_us(1); PRG_READ; MODE_READ; set_address(0); // Set phi2 to high state to keep cartridge unreseted // _delay_us(1); PHI2_HI; // _delay_us(1); } static void write_chr_byte(unsigned int address, uint8_t data) { PHI2_LOW; ROMSEL_HI; MODE_WRITE; PORTK = data; set_address(address); // PHI2 low, ROMSEL always HIGH //_delay_us(10); CHR_WRITE_LOW; _delay_us(1); // WRITING //_delay_ms(1); // WRITING CHR_WRITE_HI; //_delay_us(1); MODE_READ; set_address(0); PHI2_HI; //_delay_us(1); } static void write_prg(unsigned int address, unsigned int len, uint8_t* data) { LED_RED_ON; while (len > 0) { write_prg_byte(address, *data); address++; len--; data++; } //_delay_ms(1); LED_RED_OFF; } static void write_chr(unsigned int address, unsigned int len, uint8_t* data) { LED_RED_ON; while (len > 0) { write_chr_byte(address, *data); address++; len--; data++; } //_delay_ms(1); LED_RED_OFF; } static void reset_phi2() { LED_RED_ON; LED_GREEN_ON; PHI2_LOW; ROMSEL_HI; _delay_ms(100); PHI2_HI; LED_RED_OFF; LED_GREEN_OFF; } void resetROM() { set_address(0); PHI2_HI; ROMSEL_HI; } void write_mmc1_byte(unsigned int address, uint8_t data) { // write loop for 5 bit register if (address >= 0xE000) { for (int i = 0; i < 5; i++) { write_reg_byte(address, data >> i); // shift 1 bit into temp register [WRITE RAM SAFE] } } else { for (int j = 0; j < 5; j++) { write_prg_byte(address, data >> j); // shift 1 bit into temp register } } } // REFERENCE FOR REGISTER WRITE TO 0xE000/0xF000 // PORTF 7 = CPU R/W = 0 // PORTF 6 = /IRQ = 1 // PORTF 5 = PPU /RD = 1 // PORTF 4 = PPU /A13 = 1 // PORTF 3 = CIRAM /CE = 1 // PORTF 2 = PPU /WR = 1 // PORTF 1 = /ROMSEL // PORTF 0 = PHI2 (M2) // WRITE RAM SAFE TO REGISTERS 0xE000/0xF000 static void write_reg_byte(unsigned int address, uint8_t data) { // FIX FOR MMC1 RAM CORRUPTION PHI2_LOW; ROMSEL_HI; // A15 HI = E000 MODE_WRITE; PRG_WRITE; // CPU R/W LO PORTK = data; set_address(address); // PHI2 low, ROMSEL always HIGH // DIRECT PIN TO PREVENT RAM CORRUPTION // DIFFERENCE BETWEEN M2 LO AND ROMSEL HI MUST BE AROUND 33ns // IF TIME IS GREATER THAN 33ns THEN WRITES TO 0xE000/0xF000 WILL CORRUPT RAM AT 0x6000/0x7000 PORTF = 0b01111101; // ROMSEL LO/M2 HI PORTF = 0b01111110; // ROMSEL HI/M2 LO _delay_us(1); // Back to read mode PRG_READ; MODE_READ; set_address(0); // Set phi2 to high state to keep cartridge unreseted PHI2_HI; } static void write_ram_byte(unsigned int address, uint8_t data) { // Mapper 19 (Namco 106/163) WRITE RAM SAFE ($E000-$FFFF) PHI2_LOW; ROMSEL_HI; MODE_WRITE; PRG_WRITE; PORTK = data; set_address(address); // PHI2 low, ROMSEL always HIGH PHI2_HI; ROMSEL_LOW; // SET /ROMSEL LOW OTHERWISE CORRUPTS RAM _delay_us(1); // WRITING // PHI2 low, ROMSEL high PHI2_LOW; _delay_us(1); ROMSEL_HI; // Back to read mode PRG_READ; MODE_READ; set_address(0); // Set phi2 to high state to keep cartridge unreseted PHI2_HI; } static void write_wram_byte(unsigned int address, uint8_t data) { // Mapper 5 (MMC5) RAM PHI2_LOW; ROMSEL_HI; set_address(address); PORTK = data; _delay_us(1); MODE_WRITE; PRG_WRITE; PHI2_HI; _delay_us(1); // WRITING PHI2_LOW; ROMSEL_HI; // Back to read mode PRG_READ; MODE_READ; set_address(0); // Set phi2 to high state to keep cartridge unreseted PHI2_HI; } int int_pow(int base, int exp) { // Power for int int result = 1; while (exp) { if (exp & 1) result *= base; exp /= 2; base *= base; } return result; } /****************************************** CRC Functions *****************************************/ FsFile crcFile; char tempCRC[9]; inline uint32_t updateCRC32(uint8_t ch, uint32_t crc) { uint32_t idx = ((crc) ^ (ch)) & 0xff; uint32_t tab_value = pgm_read_dword(crc_32_tab + idx); return tab_value ^ ((crc) >> 8); } uint32_t crc32(FsFile &file, uint32_t &charcnt) { uint32_t oldcrc32 = 0xFFFFFFFF; charcnt = 0; while (file.available()) { crcFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { uint8_t c = sdBuffer[x]; charcnt++; oldcrc32 = updateCRC32(c, oldcrc32); } } return ~oldcrc32; } uint32_t crc32EEP(FsFile &file, uint32_t &charcnt) { uint32_t oldcrc32 = 0xFFFFFFFF; charcnt = 0; while (file.available()) { crcFile.read(sdBuffer, 128); for (int x = 0; x < 128; x++) { uint8_t c = sdBuffer[x]; charcnt++; oldcrc32 = updateCRC32(c, oldcrc32); } } return ~oldcrc32; } void calcCRC(char* checkFile, unsigned long filesize, uint32_t* crcCopy, unsigned long offset) { uint32_t crc; crcFile = sd.open(checkFile); crcFile.seek(offset); if (filesize < 1024) crc = crc32EEP(crcFile, filesize); else crc = crc32(crcFile, filesize); crcFile.close(); sprintf(tempCRC, "%08lX", crc); if (crcCopy != NULL) { *crcCopy = crc; } print_Msg(F("CRC: ")); println_Msg(tempCRC); display_Update(); } /****************************************** File Functions *****************************************/ void CreateROMFolderInSD() { sd.chdir(); sprintf(folder, "NES/ROM"); sd.mkdir(folder, true); sd.chdir(folder); } void CreatePRGFileInSD() { strcpy(fileName, "PRG"); strcat(fileName, ".bin"); for (byte i = 0; i < 100; i++) { if (!sd.exists(fileName)) { sdFile = sd.open(fileName, O_RDWR | O_CREAT); break; } sprintf(fileCount, "%02d", i); strcpy(fileName, "PRG."); strcat(fileName, fileCount); strcat(fileName, ".bin"); } if (!sdFile) { LED_RED_ON; display_Clear(); println_Msg(F("PRG FILE FAILED!")); display_Update(); print_Error(F("SD Error"), true); LED_RED_OFF; } } void CreateCHRFileInSD() { strcpy(fileName, "CHR"); strcat(fileName, ".bin"); for (byte i = 0; i < 100; i++) { if (!sd.exists(fileName)) { sdFile = sd.open(fileName, O_RDWR | O_CREAT); break; } sprintf(fileCount, "%02d", i); strcpy(fileName, "CHR."); strcat(fileName, fileCount); strcat(fileName, ".bin"); } if (!sdFile) { LED_RED_ON; display_Clear(); println_Msg(F("CHR FILE FAILED!")); display_Update(); print_Error(F("SD Error"), true); LED_RED_OFF; } } void CreateRAMFileInSD() { strcpy(fileName, "RAM"); strcat(fileName, ".bin"); for (byte i = 0; i < 100; i++) { if (!sd.exists(fileName)) { sdFile = sd.open(fileName, O_RDWR | O_CREAT); break; } sprintf(fileCount, "%02d", i); strcpy(fileName, "RAM."); strcat(fileName, fileCount); strcat(fileName, ".bin"); } if (!sdFile) { LED_RED_ON; display_Clear(); println_Msg(F("RAM FILE FAILED!")); display_Update(); print_Error(F("SD Error"), true); LED_RED_OFF; } } void outputNES() { display_Clear(); char* outputFile; unsigned long crcOffset = 0; uint32_t prg_size_bytes = 1024 * (uint32_t)prg; uint32_t chr_size_bytes = 1024 * (uint32_t)chr; int has_header = 0; unsigned char* nes_header_bytes = getNESHeaderForFileInfo(prg_size_bytes, chr_size_bytes, prg_crc32, chr_crc32); if (nes_header_bytes != NULL) { has_header = 1; } LED_RED_ON; LED_GREEN_ON; LED_BLUE_ON; if (!sdFile.open(filePRG, FILE_READ)) { LED_GREEN_OFF; LED_BLUE_OFF; display_Clear(); println_Msg(F("PRG FILE FAILED!")); display_Update(); print_Error(F("SD Error"), true); } if (has_header) { outputFile = fileNES; crcOffset = 16; } else { outputFile = fileBIN; } if (!sd.exists(outputFile)) { nesFile = sd.open(outputFile, O_RDWR | O_CREAT); } if (!nesFile) { LED_GREEN_OFF; LED_BLUE_OFF; display_Clear(); println_Msg(F("NES FILE FAILED!")); display_Update(); print_Error(F("SD Error"), true); } if (has_header) { nesFile.write(nes_header_bytes, 16); free(nes_header_bytes); display_Clear(); println_Msg(F("SET HEADER")); display_Update(); } size_t n; while ((n = sdFile.read(sdBuffer, sizeof(sdBuffer))) > 0) { nesFile.write(sdBuffer, n); } sdFile.close(); if (sd.exists(fileCHR)) { if (!sdFile.open(fileCHR, FILE_READ)) { LED_GREEN_OFF; LED_BLUE_OFF; display_Clear(); println_Msg(F("CHR FILE FAILED!")); display_Update(); print_Error(F("SD Error"), true); } while ((n = sdFile.read(sdBuffer, sizeof(sdBuffer))) > 0) { nesFile.write(sdBuffer, n); } sdFile.close(); } nesFile.flush(); nesFile.close(); display_Clear(); if (has_header) { println_Msg(F("NES FILE OUTPUT!")); } else { println_Msg(F("BIN FILE OUTPUT!")); } println_Msg(F("")); display_Update(); calcCRC(outputFile, (prg + chr) * 1024, NULL, crcOffset); LED_RED_OFF; LED_GREEN_OFF; LED_BLUE_OFF; } void CartStart() { sd.chdir(); EEPROM_readAnything(0, foldern); // FOLDER # sprintf(folder, "NES/CART/%d", foldern); sd.mkdir(folder, true); sd.chdir(folder); } void CartFinish() { foldern += 1; EEPROM_writeAnything(0, foldern); // FOLDER # sd.chdir(); } /****************************************** NES 2.0 Header Functions *****************************************/ unsigned char* getNESHeaderForFileInfo(uint32_t prg_size, uint32_t chr_size, uint32_t prg_crc32, uint32_t chr_crc32) { if (prg_size == 0) { return NULL; } char* temp_line; unsigned char* nes20_header; int i; if (!sdFile.open("/nes20db.txt", FILE_READ)) { return NULL; } else { display_Clear(); println_Msg(F("SEARCHING DB")); display_Update(); } temp_line = (char*)malloc(256 * sizeof(char)); while (sdFile.available()) { // We're reading fixed-length lines // padded with null characters sdFile.read(temp_line, 256); uint32_t prg_size_db; uint32_t chr_size_db; uint32_t prg_crc32_db; uint32_t chr_crc32_db; // Match PRG and CHR sizes first, then // match PRG CRC32 and, if the CHR size // is greater than zero, the CHR CRC32 // as well. prg_size_db = getPRGSizeFromDatabaseRow(temp_line); if (prg_size == prg_size_db) { chr_size_db = getCHRSizeFromDatabaseRow(temp_line); if (chr_size == chr_size_db) { prg_crc32_db = getPRGCRC32FromDatabaseRow(temp_line); if (prg_crc32 == prg_crc32_db) { if (chr_size == 0) { nes20_header = getNES20HeaderBytesFromDatabaseRow(temp_line); free(temp_line); sdFile.close(); return nes20_header; } else { chr_crc32_db = getCHRCRC32FromDatabaseRow(temp_line); if (chr_crc32 == chr_crc32_db) { nes20_header = getNES20HeaderBytesFromDatabaseRow(temp_line); free(temp_line); sdFile.close(); return nes20_header; } } } } } } free(temp_line); sdFile.close(); return NULL; } // IMPORTANT: The string returned from this function MUST // be passed to free() when ready to be disposed of, in // order to avoid a memory leak. char* getDatabaseFieldFromRow(const char* dbstr, uint8_t fieldnum) { uint8_t field_start_pos = 0; uint8_t field_end_pos = 1; uint8_t current_field = 0; char* return_field; // Field order, beginning with field 0: // PRG Size, CHR Size, PRG CRC32, CHR CRC32, Game Title, NES 2.0 Header (as ASCII) // // Each entry is on its own line, with a field delimeter of ^^ // I'm assuming that nothing will ever use ^^ in a game title, but it's possible // that could be wrong, in which case a different field delimeter would need // to be used, and the logic here updated. if (dbstr == NULL || fieldnum > 5) { return NULL; } if (dbstr[0] == 0 || dbstr[0] == '\n') { return NULL; } for (; field_end_pos < 255 && current_field < fieldnum; field_end_pos++) { if (field_start_pos < 254 && dbstr[field_start_pos] == '^' && dbstr[field_start_pos + 1] == '^') { current_field++; field_start_pos = field_end_pos; field_end_pos = field_start_pos + 1; } if (current_field < fieldnum && dbstr[field_end_pos - 1] == '^' && dbstr[field_end_pos] == '^' || dbstr[field_end_pos] == 0 || dbstr[field_end_pos] == '\n') { current_field++; field_start_pos = field_end_pos + 1; field_end_pos = field_start_pos + 1; } } field_end_pos = field_start_pos; while ((dbstr[field_end_pos - 1] != '^' || dbstr[field_end_pos] != '^') && dbstr[field_end_pos] != 0 && dbstr[field_end_pos] != '\n') { field_end_pos++; } if (dbstr[field_end_pos] == '^') { field_end_pos = field_end_pos - 2; } else { field_end_pos = field_end_pos - 1; } if ((field_end_pos - field_start_pos + 2) == 0) { return NULL; } return_field = (char*)malloc((field_end_pos - field_start_pos + 2) * sizeof(char)); memcpy(return_field, &dbstr[field_start_pos], field_end_pos - field_start_pos + 1); return_field[(field_end_pos - field_start_pos) + 1] = 0; return return_field; } unsigned char getNibbleFromChar(char num) { char ret_char = num & 0x0F; if (num > '9') { ret_char += 9; } return ret_char; } unsigned char getByteFromChars(char msn, char lsn) { unsigned char return_char; return_char = (getNibbleFromChar(msn) << 4); return_char |= getNibbleFromChar(lsn); return return_char; } // IMPORTANT: The byte array returned from this function MUST // be passed to free() when ready to be disposed of, in // order to avoid a memory leak. unsigned char* strToBytes(const char* bytestr) { uint8_t str_length; uint8_t byte_length; uint8_t str_idx; uint8_t byte_idx = 0; unsigned char* byte_arr; if (bytestr == NULL) { return NULL; } str_length = (uint8_t)strlen(bytestr); if (str_length % 2 != 0) { return NULL; } byte_length = str_length / 2; byte_arr = (unsigned char*)malloc(byte_length * sizeof(unsigned char)); for (str_idx = 0; str_idx < str_length && bytestr[str_idx] != 0; str_idx = str_idx + 2) { if (!isxdigit(bytestr[str_idx]) || !isxdigit(bytestr[str_idx + 1])) { free(byte_arr); return NULL; } byte_arr[byte_idx] = getByteFromChars(bytestr[str_idx], bytestr[str_idx + 1]); byte_idx++; } return byte_arr; } uint32_t crc32FromBytes(const unsigned char* bytearr) { if (bytearr == NULL) { return 0; } return (uint32_t)(((uint32_t)bytearr[0] << 24) | ((uint32_t)bytearr[1] << 16) | ((uint32_t)bytearr[2] << 8) | (uint32_t)bytearr[3]); } uint32_t getPRGSizeFromDatabaseRow(const char* crctest) { char* prg_size_str = getDatabaseFieldFromRow(crctest, 0); if (prg_size_str == NULL) { return 0; } uint32_t return_size = atoi32_unsigned(prg_size_str); free(prg_size_str); return return_size; } uint32_t getCHRSizeFromDatabaseRow(const char* crctest) { char* chr_size_str = getDatabaseFieldFromRow(crctest, 1); if (chr_size_str == NULL) { return 0; } uint32_t return_size = atoi32_unsigned(chr_size_str); free(chr_size_str); return return_size; } uint32_t getPRGCRC32FromDatabaseRow(const char* crctest) { char* prg_crc32_str = getDatabaseFieldFromRow(crctest, 2); if (prg_crc32_str == NULL) { return 0; } unsigned char* prg_crc32_bytes = strToBytes(prg_crc32_str); free(prg_crc32_str); if (prg_crc32_bytes == NULL) { return 0; } uint32_t prg_crc32 = crc32FromBytes(prg_crc32_bytes); free(prg_crc32_bytes); return prg_crc32; } uint64_t getCHRCRC32FromDatabaseRow(const char* crctest) { char* chr_crc32_str = getDatabaseFieldFromRow(crctest, 3); if (chr_crc32_str == NULL) { return 0; } unsigned char* chr_crc32_bytes = strToBytes(chr_crc32_str); free(chr_crc32_str); if (chr_crc32_bytes == NULL) { return 0; } uint32_t chr_crc32 = crc32FromBytes(chr_crc32_bytes); free(chr_crc32_bytes); return chr_crc32; } // IMPORTANT: As with getDatabaseFieldFromRow(), the string // returned from this function must be passed to free() after // it's no longer needed in order to avoid a memory leak. char* getGameTitleFromDatabaseRow(const char* crctest) { char* game_title_str = getDatabaseFieldFromRow(crctest, 4); return game_title_str; } // IMPORTANT: The byte array returned from this function MUST // be passed to free() when ready to be disposed of, in // order to avoid a memory leak. unsigned char* getNES20HeaderBytesFromDatabaseRow(const char* crctest) { char* nes_header_str = getDatabaseFieldFromRow(crctest, 5); if (nes_header_str == NULL) { return NULL; } unsigned char* nes_header_bytes = strToBytes(nes_header_str); free(nes_header_str); if (nes_header_bytes == NULL) { return NULL; } return nes_header_bytes; } /****************************************** Config Functions *****************************************/ void setMapper() { // OLED #if defined(enable_OLED) chooseMapper: // Read stored mapper EEPROM_readAnything(7, newmapper); if (newmapper > 220) newmapper = 0; // Split into digits byte hundreds = newmapper / 100; byte tens = newmapper / 10 - hundreds * 10; byte units = newmapper - hundreds * 100 - tens * 10; // Cycle through al 3 digits for (byte digit = 0; digit < 3; digit++) { while (1) { display_Clear(); println_Msg("Select Mapper:"); display.setCursor(23, 20); println_Msg(hundreds); display.setCursor(43, 20); println_Msg(tens); display.setCursor(63, 20); println_Msg(units); println_Msg(""); println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); if (digit == 0) { display.drawLine(20, 30, 30, 30, WHITE); display.drawLine(40, 30, 50, 30, BLACK); display.drawLine(60, 30, 70, 30, BLACK); } else if (digit == 1) { display.drawLine(20, 30, 30, 30, BLACK); display.drawLine(40, 30, 50, 30, WHITE); display.drawLine(60, 30, 70, 30, BLACK); } else if (digit == 2) { display.drawLine(20, 30, 30, 30, BLACK); display.drawLine(40, 30, 50, 30, BLACK); display.drawLine(60, 30, 70, 30, WHITE); } /* Check Button 1 click 2 doubleClick 3 hold 4 longHold */ int b = checkButton(); if (b == 1) { if (digit == 0) { if (hundreds < 2) hundreds++; else hundreds = 0; } else if (digit == 1) { if (hundreds == 2) { if (tens < 1) tens++; else tens = 0; } else { if (tens < 9) tens++; else tens = 0; } } else if (digit == 2) { if (units < 9) units++; else units = 0; } } else if (b == 2) { if (digit == 0) { if (hundreds > 0) hundreds--; else hundreds = 2; } else if (digit == 1) { if (hundreds == 2) { if (tens > 0) tens--; else tens = 1; } else { if (tens > 0) tens--; else tens = 9; } } else if (digit == 2) { if (units > 0) units--; else units = 9; } } else if (b == 3) { break; } display.display(); } } display_Clear(); newmapper = hundreds * 100 + tens * 10 + units; // Check if valid boolean validMapper = 0; byte mapcount = (sizeof(mapsize) / sizeof(mapsize[0])) / 7; for (byte currMaplist = 0; currMaplist < mapcount; currMaplist++) { if (pgm_read_byte(mapsize + currMaplist * 7) == newmapper) validMapper = 1; } if (!validMapper) { errorLvl = 1; display.println("Mapper not supported"); display.display(); wait(); goto chooseMapper; } // LCD #elif defined(enable_LCD) int i = 0; display_Clear(); mapselect = pgm_read_byte(mapsize + i * 7); print_Msg(F("Mapper: ")); println_Msg(mapselect); println_Msg(F("")); println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); display_Update(); while (1) { int b = checkButton(); if (b == 2) { // Previous Mapper if (i == 0) i = mapcount - 1; else i--; display_Clear(); mapselect = pgm_read_byte(mapsize + i * 7); print_Msg(F("Mapper: ")); println_Msg(mapselect); println_Msg(F("")); println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); display_Update(); } else if (b == 1) { // Next Mapper if (i == (mapcount - 1)) i = 0; else i++; display_Clear(); mapselect = pgm_read_byte(mapsize + i * 7); print_Msg(F("Mapper: ")); println_Msg(mapselect); println_Msg(F("")); println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); display_Update(); } else if (b == 3) { // Long Press - Execute newmapper = mapselect; break; } } display.setCursor(0, 56 + 8); print_Msg(F("MAPPER ")); print_Msg(newmapper); println_Msg(F(" SELECTED")); display_Update(); delay(1000); // Serial Monitor #elif defined(enable_serial) setmapper: String newmap; mapfound = false; Serial.println(F("SUPPORTED MAPPERS:")); for (int i = 0; i < mapcount; i++) { int index = i * 7; mapselect = pgm_read_byte(mapsize + index); Serial.print("["); Serial.print(mapselect); Serial.print("]"); if (i < mapcount - 1) { if ((i != 0) && ((i + 1) % 10 == 0)) Serial.println(F("")); else Serial.print(F("\t")); } else Serial.println(F("")); } Serial.print(F("Enter Mapper: ")); while (Serial.available() == 0) {} newmap = Serial.readStringUntil('\n'); Serial.println(newmap); newmapper = newmap.toInt(); for (int i = 0; i < mapcount; i++) { int index = i * 7; mapselect = pgm_read_byte(mapsize + index); if (newmapper == mapselect) mapfound = true; } if (mapfound == false) { Serial.println(F("MAPPER NOT SUPPORTED!")); Serial.println(F("")); newmapper = 0; goto setmapper; } #endif EEPROM_writeAnything(7, newmapper); mapper = newmapper; } void checkMapperSize() { for (int i = 0; i < mapcount; i++) { int index = i * 7; byte mapcheck = pgm_read_byte(mapsize + index); if (mapcheck == mapper) { prglo = pgm_read_byte(mapsize + index + 1); prghi = pgm_read_byte(mapsize + index + 2); chrlo = pgm_read_byte(mapsize + index + 3); chrhi = pgm_read_byte(mapsize + index + 4); ramlo = pgm_read_byte(mapsize + index + 5); ramhi = pgm_read_byte(mapsize + index + 6); break; } } } void setPRGSize() { #if (defined(enable_LCD) || defined(enable_OLED)) display_Clear(); if (prglo == prghi) newprgsize = prglo; else { b = 0; int i = prglo; display_Clear(); print_Msg(F("PRG Size: ")); println_Msg(PRG[i]); println_Msg(F("")); #if defined(enable_OLED) println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); #elif defined(enable_LCD) println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); #endif display_Update(); while (1) { b = checkButton(); if (b == doubleclick) { // Previous if (i == prglo) i = prghi; else i--; display_Clear(); print_Msg(F("PRG Size: ")); println_Msg(PRG[i]); println_Msg(F("")); #if defined(enable_OLED) println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); #elif defined(enable_LCD) println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); #endif display_Update(); } if (b == press) { // Next if (i == prghi) i = prglo; else i++; display_Clear(); print_Msg(F("PRG Size: ")); println_Msg(PRG[i]); println_Msg(F("")); #if defined(enable_OLED) println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); #elif defined(enable_LCD) println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); #endif display_Update(); } if (b == hold) { // Long Press - Execute newprgsize = i; break; } } display.setCursor(0, 56); // Display selection at bottom } print_Msg(F("PRG SIZE ")); print_Msg(PRG[newprgsize]); println_Msg(F("K")); display_Update(); delay(1000); #elif defined(enable_serial) if (prglo == prghi) newprgsize = prglo; else { setprg: String sizePRG; for (int i = 0; i < (prghi - prglo + 1); i++) { Serial.print(F("Select PRG Size: ")); Serial.print(i); Serial.print(F(" = ")); Serial.print(PRG[i + prglo]); Serial.println(F("K")); } Serial.print(F("Enter PRG Size: ")); while (Serial.available() == 0) {} sizePRG = Serial.readStringUntil('\n'); Serial.println(sizePRG); newprgsize = sizePRG.toInt() + prglo; if (newprgsize > prghi) { Serial.println(F("SIZE NOT SUPPORTED")); Serial.println(F("")); goto setprg; } } Serial.print(F("PRG Size = ")); Serial.print(PRG[newprgsize]); Serial.println(F("K")); #endif EEPROM_writeAnything(8, newprgsize); prgsize = newprgsize; } void setCHRSize() { #if (defined(enable_LCD) || defined(enable_OLED)) display_Clear(); if (chrlo == chrhi) newchrsize = chrlo; else { b = 0; int i = chrlo; display_Clear(); print_Msg(F("CHR Size: ")); println_Msg(CHR[i]); println_Msg(F("")); #if defined(enable_OLED) println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); #elif defined(enable_LCD) println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); #endif display_Update(); while (1) { b = checkButton(); if (b == doubleclick) { // Previous if (i == chrlo) i = chrhi; else i--; display_Clear(); print_Msg(F("CHR Size: ")); println_Msg(CHR[i]); println_Msg(F("")); #if defined(enable_OLED) println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); #elif defined(enable_LCD) println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); #endif display_Update(); } if (b == press) { // Next if (i == chrhi) i = chrlo; else i++; display_Clear(); print_Msg(F("CHR Size: ")); println_Msg(CHR[i]); println_Msg(F("")); #if defined(enable_OLED) println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); #elif defined(enable_LCD) println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); #endif display_Update(); } if (b == hold) { // Long Press - Execute newchrsize = i; break; } } display.setCursor(0, 56); // Display selection at bottom } print_Msg(F("CHR SIZE ")); print_Msg(CHR[newchrsize]); println_Msg(F("K")); display_Update(); delay(1000); #elif defined(enable_serial) if (chrlo == chrhi) newchrsize = chrlo; else { setchr: String sizeCHR; for (int i = 0; i < (chrhi - chrlo + 1); i++) { Serial.print(F("Select CHR Size: ")); Serial.print(i); Serial.print(F(" = ")); Serial.print(CHR[i + chrlo]); Serial.println(F("K")); } Serial.print(F("Enter CHR Size: ")); while (Serial.available() == 0) {} sizeCHR = Serial.readStringUntil('\n'); Serial.println(sizeCHR); newchrsize = sizeCHR.toInt() + chrlo; if (newchrsize > chrhi) { Serial.println(F("SIZE NOT SUPPORTED")); Serial.println(F("")); goto setchr; } } Serial.print(F("CHR Size = ")); Serial.print(CHR[newchrsize]); Serial.println(F("K")); #endif EEPROM_writeAnything(9, newchrsize); chrsize = newchrsize; } void setRAMSize() { #if (defined(enable_LCD) || defined(enable_OLED)) display_Clear(); if (ramlo == ramhi) newramsize = ramlo; else { b = 0; int i = 0; display_Clear(); print_Msg(F("RAM Size: ")); if (mapper == 0) println_Msg(RAM[i] / 4); else if (mapper == 16) println_Msg(RAM[i] * 32); else if (mapper == 19) { if (i == 2) println_Msg(F("128")); else println_Msg(RAM[i]); } else if ((mapper == 159) || (mapper == 80)) println_Msg(RAM[i] * 16); else if (mapper == 82) println_Msg(i * 5); else println_Msg(RAM[i]); println_Msg(F("")); #if defined(enable_OLED) println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); #elif defined(enable_LCD) println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); #endif display_Update(); while (1) { b = checkButton(); if (b == doubleclick) { // Previous Mapper if (i == 0) i = ramhi; else i--; display_Clear(); print_Msg(F("RAM Size: ")); if (mapper == 0) println_Msg(RAM[i] / 4); else if (mapper == 16) println_Msg(RAM[i] * 32); else if (mapper == 19) { if (i == 2) println_Msg(F("128")); else println_Msg(RAM[i]); } else if ((mapper == 159) || (mapper == 80)) println_Msg(RAM[i] * 16); else if (mapper == 82) println_Msg(i * 5); else println_Msg(RAM[i]); println_Msg(F("")); #if defined(enable_OLED) println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); #elif defined(enable_LCD) println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); #endif display_Update(); } if (b == press) { // Next if (i == ramhi) i = 0; else i++; display_Clear(); print_Msg(F("RAM Size: ")); if (mapper == 0) println_Msg(RAM[i] / 4); else if (mapper == 16) println_Msg(RAM[i] * 32); else if (mapper == 19) { if (i == 2) println_Msg(F("128")); else println_Msg(RAM[i]); } else if ((mapper == 159) || (mapper == 80)) println_Msg(RAM[i] * 16); else if (mapper == 82) println_Msg(i * 5); else println_Msg(RAM[i]); println_Msg(F("")); #if defined(enable_OLED) println_Msg(F("Press left to change")); println_Msg(F("Press right to select")); #elif defined(enable_LCD) println_Msg(F("Rotate to change")); println_Msg(F("Press to select")); #endif display_Update(); } if (b == hold) { // Long Press - Execute newramsize = i; break; } } display.setCursor(0, 56); // Display selection at bottom } if ((mapper == 16) || (mapper == 159)) { int sizeEEP = 0; print_Msg(F("EEPROM SIZE ")); if (mapper == 16) sizeEEP = RAM[newramsize] * 32; else sizeEEP = RAM[newramsize] * 16; print_Msg(sizeEEP); println_Msg(F("B")); } else if (mapper == 19) { print_Msg(F("RAM SIZE ")); if (newramsize == 2) println_Msg(F("128B")); else { print_Msg(RAM[newramsize]); println_Msg(F("K")); } } else if (mapper == 80) { print_Msg(F("RAM SIZE ")); print_Msg(RAM[newramsize] * 16); println_Msg(F("B")); } else { print_Msg(F("RAM SIZE ")); if (mapper == 0) print_Msg(newramsize * 2); else if (mapper == 82) print_Msg(newramsize * 5); else print_Msg(RAM[newramsize]); println_Msg(F("K")); } display_Update(); delay(1000); #elif defined(enable_serial) if (ramlo == ramhi) newramsize = ramlo; else { setram: String sizeRAM; for (int i = 0; i < (ramhi - ramlo + 1); i++) { Serial.print(F("Select RAM Size: ")); Serial.print(i); Serial.print(F(" = ")); if (mapper == 0) { Serial.println(RAM[i] / 4); Serial.println(F("K")); } else if ((mapper == 16) || (mapper == 159)) { if (mapper == 16) Serial.print(RAM[i + ramlo] * 32); else Serial.print(RAM[i + ramlo] * 16); Serial.println(F("B")); } else if (mapper == 19) { if (i == 2) Serial.println(F("128B")); else { Serial.print(RAM[i + ramlo]); Serial.println(F("K")); } } else { Serial.print(RAM[i + ramlo]); Serial.println(F("K")); } } Serial.print(F("Enter RAM Size: ")); while (Serial.available() == 0) {} sizeRAM = Serial.readStringUntil('\n'); Serial.println(sizeRAM); newramsize = sizeRAM.toInt() + ramlo; if (newramsize > ramhi) { Serial.println(F("SIZE NOT SUPPORTED")); Serial.println(F("")); goto setram; } } if ((mapper == 16) || (mapper == 159)) { int sizeEEP = 0; Serial.print(F("EEPROM Size = ")); if (mapper == 16) sizeEEP = RAM[newramsize] * 32; else sizeEEP = RAM[newramsize] * 16; Serial.print(sizeEEP); Serial.println(F("B")); Serial.println(F("")); } else if (mapper == 19) { Serial.print(F("RAM Size = ")); if (newramsize == 2) Serial.println(F("128B")); else { Serial.print(RAM[newramsize]); Serial.println(F("K")); } Serial.println(F("")); } else if (mapper == 80) { Serial.print(F("RAM Size = ")); Serial.print(RAM[newramsize] * 16); Serial.println(F("B")); Serial.println(F("")); } else { Serial.print(F("RAM Size = ")); if (mapper == 0) Serial.print(newramsize * 2); else if (mapper == 82) Serial.print(newramsize * 5); else Serial.print(RAM[newramsize]); Serial.println(F("K")); Serial.println(F("")); } #endif EEPROM_writeAnything(10, newramsize); ramsize = newramsize; } // MMC6 Detection // Mapper 4 includes both MMC3 AND MMC6 // RAM is mapped differently between MMC3 and MMC6 void checkMMC6() { // Detect MMC6 Carts - read PRG 0x3E00A ("STARTROPICS") write_prg_byte(0x8000, 6); // PRG Bank 0 ($8000-$9FFF) write_prg_byte(0x8001, 0x1F); // 0x3E000 prgchk0 = read_prg_byte(0x800A); prgchk1 = read_prg_byte(0x800B); prgchk2 = read_prg_byte(0x800C); prgchk3 = read_prg_byte(0x800D); if ((prgchk0 == 0x53) && (prgchk1 == 0x54) && (prgchk2 == 0x41) && (prgchk3 == 0x52)) mmc6 = true; // MMC6 Cart } void checkStatus_NES() { EEPROM_readAnything(7, mapper); EEPROM_readAnything(8, prgsize); EEPROM_readAnything(9, chrsize); EEPROM_readAnything(10, ramsize); prg = (int_pow(2, prgsize)) * 16; if (chrsize == 0) chr = 0; // 0K else chr = (int_pow(2, chrsize)) * 4; if (ramsize == 0) ram = 0; // 0K else if (mapper == 82) ram = 5; // 5K else ram = (int_pow(2, ramsize)) * 4; // Mapper Variants // Identify variant for use across multiple functions if (mapper == 4) { // Check for MMC6/MMC3 checkMMC6(); if (mmc6) ram = 1; // 1K } else if (mapper == 30) // Check for Flashable/Non-Flashable NESmaker_ID(); // Flash ID display_Clear(); println_Msg(F("NES CART READER")); println_Msg(F("CURRENT SETTINGS")); println_Msg(F("")); print_Msg(F("MAPPER: ")); println_Msg(mapper); print_Msg(F("PRG SIZE: ")); print_Msg(prg); println_Msg(F("K")); print_Msg(F("CHR SIZE: ")); print_Msg(chr); println_Msg(F("K")); print_Msg(F("RAM SIZE: ")); if (mapper == 0) { print_Msg(ram / 4); println_Msg(F("K")); } else if ((mapper == 16) || (mapper == 80) || (mapper == 159)) { if (mapper == 16) print_Msg(ram * 32); else print_Msg(ram * 16); println_Msg(F("B")); } else if (mapper == 19) { if (ramsize == 2) println_Msg(F("128B")); else { print_Msg(ram); println_Msg(F("K")); } } else { print_Msg(ram); println_Msg(F("K")); } display_Update(); wait(); } /****************************************** ROM Functions *****************************************/ void dumpPRG(word base, word address) { for (int x = 0; x < 512; x++) { sdBuffer[x] = read_prg_byte(base + address + x); } sdFile.write(sdBuffer, 512); } void dumpCHR(word address) { for (int x = 0; x < 512; x++) { sdBuffer[x] = read_chr_byte(address + x); } sdFile.write(sdBuffer, 512); } void dumpMMC5RAM(word base, word address) { // MMC5 SRAM DUMP - PULSE M2 LO/HI for (int x = 0; x < 512; x++) { PHI2_LOW; sdBuffer[x] = read_prg_byte(base + address + x); } sdFile.write(sdBuffer, 512); } void writeMMC5RAM(word base, word address) { // MMC5 SRAM WRITE sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { do { write_prg_byte(0x5102, 2); // PRG RAM PROTECT1 write_prg_byte(0x5103, 1); // PRG RAM PROTECT2 write_wram_byte(base + address + x, sdBuffer[x]); bytecheck = read_prg_byte(base + address + x); } while (bytecheck != sdBuffer[x]); // CHECK WRITTEN BYTE } write_prg_byte(0x5102, 0); // PRG RAM PROTECT1 write_prg_byte(0x5103, 0); // PRG RAM PROTECT2 } void readPRG() { display_Clear(); display_Update(); LED_BLUE_ON; set_address(0); _delay_us(1); CreatePRGFileInSD(); word base = 0x8000; if (sdFile) { switch (mapper) { case 0: case 3: case 13: case 87: // 16K/32K case 184: // 32K case 185: // 16K/32K for (word address = 0; address < ((prgsize * 0x4000) + 0x4000); address += 512) { // 16K or 32K dumpPRG(base, address); } break; case 1: case 155: // 32K/64K/128K/256K/512K banks = int_pow(2, prgsize) - 1; for (int i = 0; i < banks; i++) { // 16K Banks ($8000-$BFFF) write_prg_byte(0x8000, 0x80); // Clear Register write_mmc1_byte(0x8000, 0x0C); // Switch 16K Bank ($8000-$BFFF) + Fixed Last Bank ($C000-$FFFF) if (prgsize > 4) // 512K write_mmc1_byte(0xA000, 0x00); // Reset 512K Flag for Lower 256K if (i > 15) // Switch Upper 256K write_mmc1_byte(0xA000, 0x10); // Set 512K Flag write_mmc1_byte(0xE000, i); for (word address = 0x0; address < 0x4000; address += 512) { dumpPRG(base, address); } } for (word address = 0x4000; address < 0x8000; address += 512) { // Final Bank ($C000-$FFFF) dumpPRG(base, address); } break; case 2: // 128K/256K for (int i = 0; i < 8; i++) { // 128K/256K write_prg_byte(0x8000, i); for (word address = 0x0; address < (((prgsize - 3) * 0x4000) + 0x4000); address += 512) { dumpPRG(base, address); } } break; case 4: case 47: case 118: case 119: banks = ((int_pow(2, prgsize) * 2)) - 2; // Set Number of Banks if (mapper == 47) write_prg_byte(0xA001, 0x80); // Block Register - PRG RAM Chip Enable, Writable for (int i = 0; i < banks; i += 2) { // 32K/64K/128K/256K/512K if (mapper == 47) { if (i == 0) write_prg_byte(0x6000, 0); // Switch to Lower Block else if (i == 16) write_prg_byte(0x6000, 1); // Switch to Upper Block } write_prg_byte(0x8000, 6); // PRG Bank 0 ($8000-$9FFF) write_prg_byte(0x8001, i); write_prg_byte(0x8000, 7); // PRG Bank 1 ($A000-$BFFF) write_prg_byte(0x8001, i + 1); for (word address = 0x0; address < 0x4000; address += 512) { dumpPRG(base, address); } } for (word address = 0x4000; address < 0x8000; address += 512) { // Final 2 Banks ($C000-$FFFF) dumpPRG(base, address); } break; case 5: // 128K/256K/512K banks = int_pow(2, prgsize) * 2; write_prg_byte(0x5100, 3); // 8K PRG Banks for (int i = 0; i < banks; i += 2) { // 128K/256K/512K write_prg_byte(0x5114, i | 0x80); write_prg_byte(0x5115, (i + 1) | 0x80); for (word address = 0x0; address < 0x4000; address += 512) { dumpPRG(base, address); } } break; case 7: // 128K/256K case 34: case 77: case 96: // 128K banks = int_pow(2, prgsize) / 2; for (int i = 0; i < banks; i++) { // 32K Banks write_prg_byte(0x8000, i); for (word address = 0x0; address < 0x8000; address += 512) { // 32K Banks ($8000-$FFFF) dumpPRG(base, address); } } break; case 9: // 128K for (int i = 0; i < 13; i++) { // 16-3 = 13 = 128K write_prg_byte(0xA000, i); // $8000-$9FFF for (word address = 0x0; address < 0x2000; address += 512) { // Switch Bank ($8000-$9FFF) dumpPRG(base, address); } } for (word address = 0x2000; address < 0x8000; address += 512) { // Final 3 Banks ($A000-$FFFF) dumpPRG(base, address); } break; case 10: // 128K/256K for (int i = 0; i < (((prgsize - 3) * 8) + 7); i++) { write_prg_byte(0xA000, i); // $8000-$BFFF for (word address = 0x0; address < 0x4000; address += 512) { // Switch Bank ($8000-$BFFF) dumpPRG(base, address); } } for (word address = 0x4000; address < 0x8000; address += 512) { // Final Bank ($C000-$FFFF) dumpPRG(base, address); } break; case 16: case 159: // 128K/256K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { write_prg_byte(0x6008, i); // Submapper 4 write_prg_byte(0x8008, i); // Submapper 5 for (word address = 0x0; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 18: // 128K/256K banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i += 2) { write_prg_byte(0x8000, i & 0xF); write_prg_byte(0x8001, (i >> 4) & 0xF); write_prg_byte(0x8002, (i + 1) & 0xF); write_prg_byte(0x8003, ((i + 1) >> 4) & 0xF); for (word address = 0x0; address < 0x4000; address += 512) { dumpPRG(base, address); } } break; case 19: // 128K/256K for (int j = 0; j < 64; j++) { // Init Register write_ram_byte(0xE000, 0); // PRG Bank 0 ($8000-$9FFF) } banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i++) { write_ram_byte(0xE000, i); // PRG Bank 0 ($8000-$9FFF) for (word address = 0x0; address < 0x2000; address += 512) { dumpPRG(base, address); } } break; case 21: // 256K banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i++) { write_prg_byte(0xA000, i); for (word address = 0x2000; address < 0x4000; address += 512) { dumpPRG(base, address); } } break; case 22: case 23: case 25: case 65: case 75: // 128K/256K banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i += 2) { write_prg_byte(0x8000, i); write_prg_byte(0xA000, i + 1); for (word address = 0x0; address < 0x4000; address += 512) { dumpPRG(base, address); } } break; case 24: case 26: // 256K case 78: // 128K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { // 128K write_prg_byte(0x8000, i); for (word address = 0x0; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 30: // 256K/512K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { // 256K/512K if (flashfound) write_prg_byte(0xC000, i); // Flashable else write_prg_byte(0x8000, i); // Non-Flashable for (word address = 0x0; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 32: // 128K/256K banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i++) { // 128K/256K write_prg_byte(0x9000, 1); // PRG Mode 0 - Read $A000-$BFFF to avoid difference between Modes 0 and 1 write_prg_byte(0xA000, i); // PRG Bank for (word address = 0x2000; address < 0x4000; address += 512) { // 8K Banks ($A000-$BFFF) dumpPRG(base, address); } } break; case 33: case 48: // 128K/256K banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i += 2) { write_prg_byte(0x8000, i); // PRG Bank 0 ($8000-$9FFF) write_prg_byte(0x8001, i + 1); // PRG Bank 1 ($A000-$BFFF) for (word address = 0x0; address < 0x4000; address += 512) { // 8K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 37: banks = ((int_pow(2, prgsize) * 2)) - 2; // Set Number of Banks write_prg_byte(0xA001, 0x80); // Block Register - PRG RAM Chip Enable, Writable for (int i = 0; i < banks; i += 2) { // 256K if (i == 0) write_prg_byte(0x6000, 0); // Switch to Lower Block ($0000-$FFFF) else if (i == 8) write_prg_byte(0x6000, 3); // Switch to 2nd 64K Block ($10000-$1FFFF) else if (i == 16) write_prg_byte(0x6000, 4); // Switch to 128K Block ($20000-$3FFFF) write_prg_byte(0x8000, 6); // PRG Bank 0 ($8000-$9FFF) write_prg_byte(0x8001, i); write_prg_byte(0x8000, 7); // PRG Bank 1 ($A000-$BFFF) write_prg_byte(0x8001, i + 1); for (word address = 0x0; address < 0x4000; address += 512) { dumpPRG(base, address); } } for (word address = 0x4000; address < 0x8000; address += 512) { // Final 2 Banks ($C000-$FFFF) dumpPRG(base, address); } break; case 66: // 64K/128K banks = int_pow(2, prgsize) / 2; for (int i = 0; i < banks; i++) { // 64K/128K write_prg_byte(0x8000, i << 4); // bits 4-5 for (word address = 0x0; address < 0x8000; address += 512) { // 32K Banks ($8000-$FFFF) dumpPRG(base, address); } } break; case 67: // 128K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { // 128K write_reg_byte(0xF800, i); // [WRITE RAM SAFE] for (word address = 0x0; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 68: case 73: // 128K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { // 128K write_reg_byte(0xF000, i); // [WRITE RAM SAFE] for (word address = 0x0; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 69: // 128K/256K banks = int_pow(2, prgsize) * 2; write_prg_byte(0x8000, 8); // Command Register - PRG Bank 0 write_prg_byte(0xA000, 0); // Parameter Register - PRG RAM Disabled, PRG ROM, Bank 0 to $6000-$7FFF for (int i = 0; i < banks; i++) { // 128K/256K write_prg_byte(0x8000, 9); // Command Register - PRG Bank 1 write_prg_byte(0xA000, i); // Parameter Register - ($8000-$9FFF) for (word address = 0x0000; address < 0x2000; address += 512) { // 8K Banks ($8000-$9FFF) dumpPRG(base, address); } } break; case 70: case 89: case 93: // 128K case 152: // 64K/128K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { // 128K write_prg_byte(0x8000, i << 4); for (word address = 0x0; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 71: // 64K/128K/256K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { write_prg_byte(0xC000, i); for (word address = 0x0; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 72: // 128K banks = int_pow(2, prgsize); write_prg_byte(0x8000, 0); // Reset Register for (int i = 0; i < banks; i++) { // 128K write_prg_byte(0x8000, i | 0x80); // PRG Command + Bank write_prg_byte(0x8000, i); // PRG Bank for (word address = 0x0; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 76: case 88: case 95: case 154: // 128K case 206: // 32K/64K/128K banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i += 2) { write_prg_byte(0x8000, 6); // PRG ROM Command ($8000-$9FFF) write_prg_byte(0x8001, i); // PRG Bank write_prg_byte(0x8000, 7); // PRG ROM Command ($A000-$BFFF) write_prg_byte(0x8001, i + 1); // PRG Bank for (word address = 0x0; address < 0x4000; address += 512) { // 8K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 80: // 128K case 207: // 256K [CART SOMETIMES NEEDS POWERCYCLE] banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i += 2) { write_prg_byte(0x7EFA, i); // PRG Bank 0 ($8000-$9FFF) write_prg_byte(0x7EFC, i + 1); // PRG Bank 1 ($A000-$BFFF) for (word address = 0x0; address < 0x4000; address += 512) { dumpPRG(base, address); } } break; case 82: // 128K banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i += 2) { write_prg_byte(0x7EFA, i << 2); // PRG Bank 0 ($8000-$9FFF) write_prg_byte(0x7EFB, (i + 1) << 2); // PRG Bank 1 ($A000-$BFFF) for (word address = 0x0; address < 0x4000; address += 512) { // 8K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 85: // 128K/512K banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i++) { write_prg_byte(0x8000, i); // PRG Bank 0 ($8000-$9FFF) for (word address = 0x0; address < 0x2000; address += 512) { // 8K Banks ($8000-$9FFF) dumpPRG(base, address); } } break; case 86: case 140: // 128K banks = int_pow(2, prgsize) / 2; for (int i = 0; i < banks; i++) { // 128K write_prg_byte(0x6000, i << 4); // bits 4-5 for (word address = 0x0; address < 0x8000; address += 512) { // 32K Banks ($8000-$FFFF) dumpPRG(base, address); } } break; case 92: // 256K banks = int_pow(2, prgsize); write_prg_byte(0x8000, 0); // Reset Register for (int i = 0; i < banks; i++) { // 256K write_prg_byte(0x8000, i | 0x80); // PRG Command + Bank write_prg_byte(0x8000, i); // PRG Bank for (word address = 0x4000; address < 0x8000; address += 512) { // 16K Banks ($C000-$FFFF) dumpPRG(base, address); } } break; case 94: banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { // 128K write_prg_byte(0x8000, i << 2); for (word address = 0x0; address < 0x4000; address += 512) { dumpPRG(base, address); } } break; case 97: // 256K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { // 256K write_prg_byte(0x8000, i); // PRG Bank for (word address = 0x4000; address < 0x8000; address += 512) { // 16K Banks ($C000-$FFFF) dumpPRG(base, address); } } break; case 105: // 256K write_mmc1_byte(0xA000, 0x00); // Clear PRG Init/IRQ (Bit 4) write_mmc1_byte(0xA000, 0x10); // Set PRG Init/IRQ (Bit 4) to enable bank swapping for (int i = 0; i < 4; i++) { // PRG CHIP 1 128K write_mmc1_byte(0xA000, i << 1); for (word address = 0x0; address < 0x8000; address += 512) { // 32K Banks ($8000-$FFFF) dumpPRG(base, address); } } write_mmc1_byte(0x8000, 0x0C); // Switch 16K Bank ($8000-$BFFF) + Fixed Last Bank ($C000-$FFFF) write_mmc1_byte(0xA000, 0x08); // Select PRG CHIP 2 (Bit 3) for (int j = 0; j < 8; j++) { // PRG CHIP 2 128K write_mmc1_byte(0xE000, j); for (word address = 0x0; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 180: // 128K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { write_prg_byte(0x8000, i); for (word address = 0x4000; address < 0x8000; address += 512) { // 16K Banks ($C000-$FFFF) dumpPRG(base, address); } } break; case 153: // 512K banks = int_pow(2, prgsize); for (int i = 0; i < banks; i++) { // 512K write_prg_byte(0x8000, i >> 4); // PRG Outer Bank (Documentation says duplicate over $8000-$8003 registers) write_prg_byte(0x8001, i >> 4); // PRG Outer Bank write_prg_byte(0x8002, i >> 4); // PRG Outer Bank write_prg_byte(0x8003, i >> 4); // PRG Outer Bank write_prg_byte(0x8008, i & 0xF); // PRG Inner Bank for (word address = 0x0000; address < 0x4000; address += 512) { // 16K Banks ($8000-$BFFF) dumpPRG(base, address); } } break; case 210: // 128K/256K banks = int_pow(2, prgsize) * 2; for (int i = 0; i < banks; i += 2) { write_prg_byte(0xE000, i); // PRG Bank 0 ($8000-$9FFF) [WRITE NO RAM] write_prg_byte(0xE800, i + 1); // PRG Bank 1 ($A000-$BFFF) [WRITE NO RAM] for (word address = 0x0; address < 0x4000; address += 512) { dumpPRG(base, address); } } break; } sdFile.flush(); sdFile.close(); println_Msg(F("PRG FILE DUMPED!")); println_Msg(F("")); display_Update(); calcCRC(fileName, prg * 1024, &prg_crc32, 0); } set_address(0); PHI2_HI; ROMSEL_HI; LED_BLUE_OFF; } void readCHR() { display_Clear(); display_Update(); LED_GREEN_ON; set_address(0); _delay_us(1); if (chrsize == 0) { println_Msg(F("CHR SIZE 0K")); display_Update(); } else { CreateCHRFileInSD(); if (sdFile) { switch (mapper) { case 0: // 8K for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } break; case 1: case 155: banks = int_pow(2, chrsize); for (int i = 0; i < banks; i += 2) { // 8K/16K/32K/64K/128K (Bank #s are based on 4K Banks) write_prg_byte(0x8000, 0x80); // Clear Register write_mmc1_byte(0xA000, i); for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 3: // 8K/16K/32K case 66: // 16K/32K case 70: case 152: // 128K banks = int_pow(2, chrsize) / 2; for (int i = 0; i < banks; i++) { // 8K Banks write_prg_byte(0x8000, i); // CHR Bank 0 for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 4: case 47: case 118: case 119: banks = int_pow(2, chrsize) * 4; if (mapper == 47) write_prg_byte(0xA001, 0x80); // Block Register - PRG RAM Chip Enable, Writable for (int i = 0; i < banks; i += 4) { // 8K/16K/32K/64K/128K/256K if (mapper == 47) { if (i == 0) write_prg_byte(0x6000, 0); // Switch to Lower Block else if (i == 128) write_prg_byte(0x6000, 1); // Switch to Upper Block } write_prg_byte(0x8000, 0); // CHR Bank 0 ($0000-$07FF) write_prg_byte(0x8001, i); write_prg_byte(0x8000, 1); // CHR Bank 1 ($0800-$0FFF) write_prg_byte(0x8001, i + 2); for (word address = 0x0; address < 0x1000; address += 512) { dumpCHR(address); } } break; case 5: // 128K/256K/512K banks = int_pow(2, chrsize) / 2; write_prg_byte(0x5101, 0); // 8K CHR Banks for (int i = 0; i < banks; i++) { if (i == 0) write_prg_byte(0x5130, 0); // Set Upper 2 bits else if (i == 8) write_prg_byte(0x5130, 1); // Set Upper 2 bits else if (i == 16) write_prg_byte(0x5130, 2); // Set Upper 2 bits else if (i == 24) write_prg_byte(0x5130, 3); // Set Upper 2 bits write_prg_byte(0x5127, i); for (word address = 0x0; address < 0x2000; address += 512) { // ($0000-$1FFF) dumpCHR(address); } } break; case 9: case 10: // Mapper 9: 128K, Mapper 10: 64K/128K if (mapper == 9) banks = 32; else // Mapper 10 banks = int_pow(2, chrsize); for (int i = 0; i < banks; i++) { // 64K/128K write_prg_byte(0xB000, i); write_prg_byte(0xC000, i); for (word address = 0x0; address < 0x1000; address += 512) { dumpCHR(address); } } break; case 16: case 159: // 128K/256K banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i++) { write_prg_byte(0x6000, i); // Submapper 4 write_prg_byte(0x8000, i); // Submapper 5 for (word address = 0x0; address < 0x400; address += 512) { dumpCHR(address); } } break; case 18: // 128K/256K banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i++) { write_prg_byte(0xA000, i & 0xF); // CHR Bank Lower 4 bits write_prg_byte(0xA001, (i >> 4) & 0xF); // CHR Bank Upper 4 bits for (word address = 0x0; address < 0x400; address += 512) { dumpCHR(address); } } break; case 19: // 128K/256K for (int j = 0; j < 64; j++) { // Init Register write_ram_byte(0xE800, 0xC0); // CHR RAM High/Low Disable (ROM Enable) } banks = int_pow(2, chrsize) * 4; write_ram_byte(0xE800, 0xC0); // CHR RAM High/Low Disable (ROM Enable) for (int i = 0; i < banks; i += 8) { write_prg_byte(0x8000, i); // CHR Bank 0 write_prg_byte(0x8800, i + 1); // CHR Bank 1 write_prg_byte(0x9000, i + 2); // CHR Bank 2 write_prg_byte(0x9800, i + 3); // CHR Bank 3 write_prg_byte(0xA000, i + 4); // CHR Bank 4 write_prg_byte(0xA800, i + 5); // CHR Bank 5 write_prg_byte(0xB000, i + 6); // CHR Bank 6 write_prg_byte(0xB800, i + 7); // CHR Bank 7 for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 21: // 128K/256K banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i++) { write_prg_byte(0xB000, i & 0xF); // CHR Bank Lower 4 bits if (chrsize == 5) // Check CHR Size to determine VRC4a (128K) or VRC4c (256K) write_prg_byte(0xB002, (i >> 4) & 0xF); // CHR Bank Upper 4 bits VRC4a (Wai Wai World 2) else // banks == 256 write_prg_byte(0xB040, (i >> 4) & 0xF); // CHR Bank Upper 4 bits VRC4c (Ganbare Goemon Gaiden 2) for (word address = 0x0; address < 0x400; address += 512) { dumpCHR(address); } } break; case 22: // 128K banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i++) { write_prg_byte(0xB000, (i << 1) & 0xF); // CHR Bank Lower 4 bits write_prg_byte(0xB002, (i >> 3) & 0xF); // CHR Bank Upper 4 bits for (word address = 0x0; address < 0x400; address += 512) { dumpCHR(address); } } break; case 23: // 128K // Detect VRC4e Carts - read PRG 0x1FFF6 (DATE) // Boku Dracula-kun = 890810, Tiny Toon = 910809 // Crisis Force = 910701, Parodius Da! = 900916 write_prg_byte(0x8000, 15); prgchk0 = read_prg_byte(0x9FF6); if (prgchk0 == 0x30) { // Check for "0" in middle of date vrc4e = true; // VRC4e Cart } banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i++) { write_prg_byte(0xB000, i & 0xF); // CHR Bank Lower 4 bits if (vrc4e == true) write_prg_byte(0xB004, (i >> 4) & 0xF); // CHR Bank Upper 4 bits VRC4e else write_prg_byte(0xB001, (i >> 4) & 0xF); // CHR Bank Upper 4 bits VRC2b/VRC4f for (word address = 0x0; address < 0x400; address += 512) { dumpCHR(address); } } break; case 24: // 128K banks = int_pow(2, chrsize) * 4; write_prg_byte(0xB003, 0); // PPU Banking Mode 0 for (int i = 0; i < banks; i += 8) { write_prg_byte(0xD000, i); // CHR Bank 0 write_prg_byte(0xD001, i + 1); // CHR Bank 1 write_prg_byte(0xD002, i + 2); // CHR Bank 2 write_prg_byte(0xD003, i + 3); // CHR Bank 3 write_prg_byte(0xE000, i + 4); // CHR Bank 4 [WRITE NO RAM] write_prg_byte(0xE001, i + 5); // CHR Bank 5 [WRITE NO RAM] write_prg_byte(0xE002, i + 6); // CHR Bank 6 [WRITE NO RAM] write_prg_byte(0xE003, i + 7); // CHR Bank 7 [WRITE NO RAM] for (word address = 0x0; address < 0x2000; address += 512) { // 1K Banks dumpCHR(address); } } break; case 25: // 128K/256K banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i++) { write_prg_byte(0xB000, i & 0xF); // CHR Bank Lower 4 bits if ((ramsize > 0) || (banks == 128)) // VRC2c (Ganbare Goemon Gaiden)/VRC4b (Bio Miracle/Gradius 2/Racer Mini) write_prg_byte(0xB002, (i >> 4) & 0xF); // CHR Bank Upper 4 bits VRC2c/VRC4b else write_prg_byte(0xB008, (i >> 4) & 0xF); // CHR Bank Upper 4 bits VRC4d (Teenage Mutant Ninja Turtles) for (word address = 0x0; address < 0x400; address += 512) { dumpCHR(address); } } break; case 26: // 128K/256K banks = int_pow(2, chrsize) * 4; write_prg_byte(0xB003, 0x00); for (int i = 0; i < banks; i += 4) { write_prg_byte(0xD000, i + 0); // CHR Bank 0 write_prg_byte(0xD002, i + 1); // CHR Bank 1 write_prg_byte(0xD001, i + 2); // CHR Bank 2 write_prg_byte(0xD003, i + 3); // CHR Bank 3 for (word address = 0x0; address < 0x1000; address += 512) { // 1K Banks dumpCHR(address); } } break; case 32: // 128K case 65: // 128K/256K banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i += 8) { write_prg_byte(0xB000, i); // CHR Bank 0 write_prg_byte(0xB001, i + 1); // CHR Bank 1 write_prg_byte(0xB002, i + 2); // CHR Bank 2 write_prg_byte(0xB003, i + 3); // CHR Bank 3 write_prg_byte(0xB004, i + 4); // CHR Bank 4 write_prg_byte(0xB005, i + 5); // CHR Bank 5 write_prg_byte(0xB006, i + 6); // CHR Bank 6 write_prg_byte(0xB007, i + 7); // CHR Bank 7 for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 33: // 128K/256K case 48: // 256K banks = int_pow(2, chrsize) * 2; for (int i = 0; i < banks; i += 2) { // 2K Banks write_prg_byte(0x8002, i); // CHR Bank 0 write_prg_byte(0x8003, i + 1); // CHR Bank 1 for (word address = 0x0; address < 0x1000; address += 512) { dumpCHR(address); } } break; case 37: banks = int_pow(2, chrsize) * 4; write_prg_byte(0xA001, 0x80); // Block Register - PRG RAM Chip Enable, Writable for (int i = 0; i < banks; i += 4) { // 256K if (i == 0) write_prg_byte(0x6000, 0); // Switch to Lower Block ($00000-$1FFFF) else if (i == 128) write_prg_byte(0x6000, 4); // Switch to Upper Block ($20000-$3FFFF) write_prg_byte(0x8000, 0); // CHR Bank 0 ($0000-$07FF) write_prg_byte(0x8001, i); write_prg_byte(0x8000, 1); // CHR Bank 1 ($0800-$0FFF) write_prg_byte(0x8001, i + 2); for (word address = 0x0; address < 0x1000; address += 512) { dumpCHR(address); } } break; case 67: // 128K banks = int_pow(2, chrsize) * 2; for (int i = 0; i < banks; i += 4) { // 2K Banks write_prg_byte(0x8800, i); // CHR Bank 0 write_prg_byte(0x9800, i + 1); // CHR Bank 1 write_prg_byte(0xA800, i + 2); // CHR Bank 2 write_prg_byte(0xB800, i + 3); // CHR Bank 3 for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 68: // 128K/256K banks = int_pow(2, chrsize) * 2; for (int i = 0; i < banks; i += 4) { // 2K Banks write_prg_byte(0x8000, i); // CHR Bank 0 write_prg_byte(0x9000, i + 1); // CHR Bank 1 write_prg_byte(0xA000, i + 2); // CHR Bank 2 write_prg_byte(0xB000, i + 3); // CHR Bank 3 for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 69: // 128K/256K banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i++) { write_prg_byte(0x8000, 0); // Command Register - CHR Bank 0 write_prg_byte(0xA000, i); // Parameter Register - ($0000-$03FF) for (word address = 0x0; address < 0x400; address += 512) { // 1K Banks dumpCHR(address); } } break; case 72: // 128K banks = int_pow(2, chrsize) / 2; write_prg_byte(0x8000, 0); // Reset Register for (int i = 0; i < banks; i++) { // 8K Banks write_prg_byte(0x8000, i | 0x40); // CHR Command + Bank write_prg_byte(0x8000, i); // CHR Bank for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 75: // 128K banks = int_pow(2, chrsize); for (int i = 0; i < banks; i++) { // 4K Banks write_reg_byte(0xE000, i); // CHR Bank Low Bits [WRITE RAM SAFE] write_prg_byte(0x9000, (i & 0x10) >> 3); // High Bit for (word address = 0x0; address < 0x1000; address += 512) { dumpCHR(address); } } break; case 76: // 128K banks = int_pow(2, chrsize) * 2; for (int i = 0; i < banks; i += 2) { // 2K Banks write_prg_byte(0x8000, 2); // CHR Command ($0000-$07FF) 2K Bank write_prg_byte(0x8001, i); // CHR Bank write_prg_byte(0x8000, 3); // CHR Command ($0800-$0FFF) 2K Bank write_prg_byte(0x8001, i + 1); // CHR Bank for (word address = 0x0000; address < 0x1000; address += 512) { dumpCHR(address); } } break; case 77: // 32K banks = int_pow(2, chrsize) * 2; for (int i = 0; i < banks; i++) { // 2K Banks write_prg_byte(0x8000, i << 4); // CHR Bank 0 for (word address = 0x0; address < 0x800; address += 512) { dumpCHR(address); } } break; case 78: // 128K banks = int_pow(2, chrsize) / 2; for (int i = 0; i < banks; i++) { // 8K Banks write_prg_byte(0x8000, i << 4); // CHR Bank 0 for (word address = 0x0; address < 0x2000; address += 512) { // 8K Banks ($0000-$1FFF) dumpCHR(address); } } break; case 80: // 128K/256K case 82: // 128K/256K case 207: // 128K [CART SOMETIMES NEEDS POWERCYCLE] banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i += 4) { write_prg_byte(0x7EF2, i); // CHR Bank 2 [REGISTERS 0x7EF0/0x7EF1 WON'T WORK] write_prg_byte(0x7EF3, i + 1); // CHR Bank 3 write_prg_byte(0x7EF4, i + 2); // CHR Bank 4 write_prg_byte(0x7EF5, i + 3); // CHR Bank 5 for (word address = 0x1000; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 85: // 128K banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i += 8) { write_prg_byte(0xA000, i); // CHR Bank 0 write_prg_byte(0xA008, i + 1); // CHR Bank 1 write_prg_byte(0xB000, i + 2); // CHR Bank 2 write_prg_byte(0xB008, i + 3); // CHR Bank 3 write_prg_byte(0xC000, i + 4); // CHR Bank 4 write_prg_byte(0xC008, i + 5); // CHR Bank 5 write_prg_byte(0xD000, i + 6); // CHR Bank 6 write_prg_byte(0xD008, i + 7); // CHR Bank 7 for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 86: // 64K banks = int_pow(2, chrsize) / 2; for (int i = 0; i < banks; i++) { // 8K Banks if (i < 4) write_prg_byte(0x6000, i & 0x3); else write_prg_byte(0x6000, (i | 0x40) & 0x43); for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 87: // 16K/32K banks = int_pow(2, chrsize) / 2; for (int i = 0; i < banks; i++) { // 16K/32K write_prg_byte(0x6000, (((i & 0x1) << 1) | ((i & 0x2) >> 1))); for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 88: // 128K case 95: // 32K case 154: // 128K case 206: // 16K/32K/64K banks = int_pow(2, chrsize) * 4; for (int i = 0; i < banks; i += 2) { // 1K Banks if (i < 64) { write_prg_byte(0x8000, 0); // CHR Command ($0000-$07FF) 2K Bank write_prg_byte(0x8001, i & 0x3F); // CHR Bank for (word address = 0x0; address < 0x800; address += 512) { dumpCHR(address); } } else { write_prg_byte(0x8000, 2); // CHR Command ($1000-$13FF) 1K Bank write_prg_byte(0x8001, i); // CHR Bank write_prg_byte(0x8000, 3); // CHR Command ($1400-$17FF) 1K Bank write_prg_byte(0x8001, i + 1); // CHR Bank for (word address = 0x1000; address < 0x1800; address += 512) { dumpCHR(address); } } } break; case 89: // 128K banks = int_pow(2, chrsize) / 2; for (int i = 0; i < banks; i++) { // 8K Banks if (i < 8) write_prg_byte(0x8000, i & 0x7); else write_prg_byte(0x8000, (i | 0x80) & 0x87); for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 92: // 128K banks = int_pow(2, chrsize) / 2; write_prg_byte(0x8000, 0); // Reset Register for (int i = 0; i < banks; i++) { // 8K Banks write_prg_byte(0x8000, i | 0x40); // CHR Command + Bank write_prg_byte(0x8000, i); // CHR Bank for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 140: // 32K/128K banks = int_pow(2, chrsize) / 2; for (int i = 0; i < banks; i++) { // 8K Banks write_prg_byte(0x6000, i); for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; case 184: // 16K/32K banks = int_pow(2, chrsize); for (int i = 0; i < banks; i++) { // 4K Banks write_prg_byte(0x6000, i); // CHR LOW (Bits 0-2) ($0000-$0FFF) for (word address = 0x0; address < 0x1000; address += 512) { // 4K Banks ($0000-$0FFF) dumpCHR(address); } } break; case 185: // 8K [READ 32K TO OVERRIDE LOCKOUT] for (int i = 0; i < 4; i++) { // Read 32K to locate valid 8K write_prg_byte(0x8000, i); byte chrcheck = read_chr_byte(0); for (word address = 0x0; address < 0x2000; address += 512) { for (int x = 0; x < 512; x++) { sdBuffer[x] = read_chr_byte(address + x); } if (chrcheck != 0xFF) sdFile.write(sdBuffer, 512); } } break; case 210: // 128K/256K banks = int_pow(2, chrsize) * 4; write_prg_byte(0xE800, 0xC0); // CHR RAM DISABLE (Bit 6 and 7) [WRITE NO RAM] for (int i = 0; i < banks; i += 8) { write_prg_byte(0x8000, i); // CHR Bank 0 write_prg_byte(0x8800, i + 1); // CHR Bank 1 write_prg_byte(0x9000, i + 2); // CHR Bank 2 write_prg_byte(0x9800, i + 3); // CHR Bank 3 write_prg_byte(0xA000, i + 4); // CHR Bank 4 write_prg_byte(0xA800, i + 5); // CHR Bank 5 write_prg_byte(0xB000, i + 6); // CHR Bank 6 write_prg_byte(0xB800, i + 7); // CHR Bank 7 for (word address = 0x0; address < 0x2000; address += 512) { dumpCHR(address); } } break; } sdFile.flush(); sdFile.close(); println_Msg(F("CHR FILE DUMPED!")); println_Msg(F("")); display_Update(); calcCRC(fileName, chr * 1024, &chr_crc32, 0); } } set_address(0); PHI2_HI; ROMSEL_HI; LED_GREEN_OFF; } /****************************************** RAM Functions *****************************************/ void readRAM() { display_Clear(); display_Update(); LED_BLUE_ON; LED_GREEN_ON; set_address(0); _delay_us(1); if (ramsize == 0) { println_Msg(F("RAM SIZE 0K")); display_Update(); } else { CreateRAMFileInSD(); word base = 0x6000; if (sdFile) { switch (mapper) { case 0: // 2K/4K for (word address = 0x0; address < (0x800 * ramsize); address += 512) { // 2K/4K dumpPRG(base, address); // SWITCH MUST BE IN OFF POSITION } break; case 1: case 155: // 8K/16K/32K banks = int_pow(2, ramsize) / 2; // banks = 1,2,4 for (int i = 0; i < banks; i++) { // 8K Banks ($6000-$7FFF) write_prg_byte(0x8000, 0x80); // Clear Register write_mmc1_byte(0x8000, 1 << 3); write_mmc1_byte(0xE000, 0); if (banks == 4) // 32K write_mmc1_byte(0xA000, i << 2); else write_mmc1_byte(0xA000, i << 3); for (word address = 0x0; address < 0x2000; address += 512) { // 8K dumpPRG(base, address); } } break; case 4: // 1K/8K (MMC6/MMC3) if (mmc6) { // MMC6 1K write_prg_byte(0x8000, 0x20); // PRG RAM ENABLE write_prg_byte(0xA001, 0x20); // PRG RAM PROTECT - Enable reading RAM at $7000-$71FF for (word address = 0x1000; address < 0x1200; address += 512) { // 512B dumpMMC5RAM(base, address); } write_prg_byte(0x8000, 0x20); // PRG RAM ENABLE write_prg_byte(0xA001, 0x80); // PRG RAM PROTECT - Enable reading RAM at $7200-$73FF for (word address = 0x1200; address < 0x1400; address += 512) { // 512B dumpMMC5RAM(base, address); } write_prg_byte(0x8000, 6); // PRG RAM DISABLE } else { // MMC3 8K write_prg_byte(0xA001, 0xC0); // PRG RAM CHIP ENABLE - Chip Enable, Write Protect for (word address = 0; address < 0x2000; address += 512) { // 8K dumpPRG(base, address); } } break; case 5: // 8K/16K/32K write_prg_byte(0x5100, 3); // 8K PRG Banks banks = int_pow(2, ramsize) / 2; // banks = 1,2,4 if (banks == 2) { // 16K - Split SRAM Chips 8K/8K for (int i = 0; i < (banks / 2); i++) { // Chip 1 write_prg_byte(0x5113, i); for (word address = 0; address < 0x2000; address += 512) { // 8K dumpMMC5RAM(base, address); } } for (int j = 4; j < (banks / 2) + 4; j++) { // Chip 2 write_prg_byte(0x5113, j); for (word address = 0; address < 0x2000; address += 512) { // 8K dumpMMC5RAM(base, address); } } } else { // 8K/32K Single SRAM Chip for (int i = 0; i < banks; i++) { // banks = 1 or 4 write_prg_byte(0x5113, i); for (word address = 0; address < 0x2000; address += 512) { // 8K dumpMMC5RAM(base, address); } } } break; case 16: // 256-byte EEPROM 24C02 case 159: // 128-byte EEPROM 24C01 [Little Endian] if (mapper == 159) eepsize = 128; else eepsize = 256; for (word address = 0; address < eepsize; address++) { EepromREAD(address); } sdFile.write(sdBuffer, eepsize); // display_Clear(); // TEST PURPOSES - DISPLAY EEPROM DATA break; case 19: if (ramsize == 2) { // PRG RAM 128B for (int x = 0; x < 128; x++) { write_ram_byte(0xF800, x); // PRG RAM ENABLE sdBuffer[x] = read_prg_byte(0x4800); // DATA PORT } sdFile.write(sdBuffer, 128); } else { // SRAM 8K for (int i = 0; i < 64; i++) { // Init Register write_ram_byte(0xE000, 0); } for (word address = 0; address < 0x2000; address += 512) { // 8K dumpPRG(base, address); } } break; case 80: // 1K write_prg_byte(0x7EF8, 0xA3); // PRG RAM ENABLE 0 write_prg_byte(0x7EF9, 0xA3); // PRG RAM ENABLE 1 for (int x = 0; x < 128; x++) { // PRG RAM 1K ($7F00-$7FFF) MIRRORED ONCE sdBuffer[x] = read_prg_byte(0x7F00 + x); } sdFile.write(sdBuffer, 128); write_prg_byte(0x7EF8, 0xFF); // PRG RAM DISABLE 0 write_prg_byte(0x7EF9, 0xFF); // PRG RAM DISABLE 1 break; case 82: // 5K write_prg_byte(0x7EF7, 0xCA); // PRG RAM ENABLE 0 ($6000-$67FF) write_prg_byte(0x7EF8, 0x69); // PRG RAM ENABLE 1 ($6800-$6FFF) write_prg_byte(0x7EF9, 0x84); // PRG RAM ENABLE 2 ($7000-$73FF) for (word address = 0x0; address < 0x1400; address += 512) { // PRG RAM 5K ($6000-$73FF) dumpMMC5RAM(base, address); } write_prg_byte(0x7EF7, 0xFF); // PRG RAM DISABLE 0 ($6000-$67FF) write_prg_byte(0x7EF8, 0xFF); // PRG RAM DISABLE 1 ($6800-$6FFF) write_prg_byte(0x7EF9, 0xFF); // PRG RAM DISABLE 2 ($7000-$73FF) break; default: if (mapper == 118) // 8K write_prg_byte(0xA001, 0xC0); // PRG RAM CHIP ENABLE - Chip Enable, Write Protect else if (mapper == 19) { for (int i = 0; i < 64; i++) { // Init Register write_ram_byte(0xE000, 0); } } else if ((mapper == 21) || (mapper == 25)) // 8K write_prg_byte(0x8000, 0); else if (mapper == 26) // 8K write_prg_byte(0xB003, 0x80); // PRG RAM ENABLE else if (mapper == 68) // 8K write_reg_byte(0xF000, 0x10); // PRG RAM ENABLE [WRITE RAM SAFE] else if (mapper == 69) { // 8K write_prg_byte(0x8000, 8); // Command Register - PRG Bank 0 write_prg_byte(0xA000, 0xC0); // Parameter Register - PRG RAM Enabled, PRG RAM, Bank 0 to $6000-$7FFF } else if (mapper == 85) // 8K write_ram_byte(0xE000, 0x80); // PRG RAM ENABLE else if (mapper == 153) // 8K write_prg_byte(0x800D, 0x20); // PRG RAM Chip Enable for (word address = 0; address < 0x2000; address += 512) { // 8K dumpPRG(base, address); } if (mapper == 85) // 8K write_reg_byte(0xE000, 0); // PRG RAM DISABLE [WRITE RAM SAFE] break; } sdFile.flush(); sdFile.close(); println_Msg(F("RAM FILE DUMPED!")); println_Msg(F("")); display_Update(); if ((mapper == 16) || (mapper == 159)) calcCRC(fileName, eepsize, NULL, 0); else calcCRC(fileName, ram * 1024, NULL, 0); } } set_address(0); PHI2_HI; ROMSEL_HI; LED_BLUE_OFF; LED_GREEN_OFF; } void writeRAM() { display_Clear(); if (ramsize == 0) { print_Error(F("RAM SIZE 0K"), false); } else { fileBrowser(F("Select RAM File")); word base = 0x6000; sd.chdir(); sprintf(filePath, "%s/%s", filePath, fileName); display_Clear(); println_Msg(F("Writing File: ")); println_Msg(filePath); println_Msg(fileName); display_Update(); //open file on sd card if (sdFile.open(filePath, O_READ)) { switch (mapper) { case 0: // 2K/4K for (word address = 0x0; address < (0x800 * ramsize); address += 512) { // 2K/4K sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { write_prg_byte(base + address + x, sdBuffer[x]); // SWITCH MUST BE IN OFF POSITION } } break; case 1: case 155: banks = int_pow(2, ramsize) / 2; // banks = 1,2,4 for (int i = 0; i < banks; i++) { // 8K Banks ($6000-$7FFF) write_prg_byte(0x8000, 0x80); // Clear Register write_mmc1_byte(0x8000, 1 << 3); // PRG ROM MODE 32K write_mmc1_byte(0xE000, 0); // PRG RAM ENABLED if (banks == 4) // 32K write_mmc1_byte(0xA000, i << 2); else write_mmc1_byte(0xA000, i << 3); for (word address = 0x0; address < 0x2000; address += 512) { // 8K sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { write_prg_byte(base + address + x, sdBuffer[x]); } } } break; case 4: // 1K/8K (MMC6/MMC3) if (mmc6) { // MMC6 1K write_prg_byte(0x8000, 0x20); // PRG RAM ENABLE write_prg_byte(0xA001, 0x30); // PRG RAM PROTECT - Enable reading/writing to RAM at $7000-$71FF for (word address = 0x1000; address < 0x1200; address += 512) { // 512B sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { write_wram_byte(base + address + x, sdBuffer[x]); } } write_prg_byte(0x8000, 0x20); // PRG RAM ENABLE write_prg_byte(0xA001, 0xC0); // PRG RAM PROTECT - Enable reading/writing to RAM at $7200-$73FF for (word address = 0x1200; address < 0x1400; address += 512) { // 512B sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { write_wram_byte(base + address + x, sdBuffer[x]); } } write_prg_byte(0x8000, 0x6); // PRG RAM DISABLE } else { // MMC3 8K write_prg_byte(0xA001, 0x80); // PRG RAM CHIP ENABLE - Chip Enable, Allow Writes for (word address = 0; address < 0x2000; address += 512) { // 8K sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { write_prg_byte(base + address + x, sdBuffer[x]); } } write_prg_byte(0xA001, 0xC0); // PRG RAM CHIP ENABLE - Chip Enable, Write Protect } break; case 5: // 8K/16K/32K write_prg_byte(0x5100, 3); // 8K PRG Banks banks = int_pow(2, ramsize) / 2; // banks = 1,2,4 if (banks == 2) { // 16K - Split SRAM Chips 8K/8K [ETROM = 16K (ONLY 1ST 8K BATTERY BACKED)] for (int i = 0; i < (banks / 2); i++) { // Chip 1 write_prg_byte(0x5113, i); for (word address = 0; address < 0x2000; address += 512) { // 8K writeMMC5RAM(base, address); } } for (int j = 4; j < (banks / 2) + 4; j++) { // Chip 2 write_prg_byte(0x5113, j); for (word address = 0; address < 0x2000; address += 512) { // 8K writeMMC5RAM(base, address); } } } else { // 8K/32K Single SRAM Chip [EKROM = 8K BATTERY BACKED, EWROM = 32K BATTERY BACKED] for (int i = 0; i < banks; i++) { // banks = 1 or 4 write_prg_byte(0x5113, i); for (word address = 0; address < 0x2000; address += 512) { // 8K writeMMC5RAM(base, address); } } } break; case 16: // 256-byte EEPROM 24C02 case 159: // 128-byte EEPROM 24C01 [Little Endian] if (mapper == 159) eepsize = 128; else eepsize = 256; sdFile.read(sdBuffer, eepsize); for (word address = 0; address < eepsize; address++) { EepromWRITE(address); if ((address % 128) == 0) display_Clear(); print_Msg(F(".")); display_Update(); } break; case 19: if (ramsize == 2) { // PRG RAM 128B sdFile.read(sdBuffer, 128); for (int x = 0; x < 128; x++) { write_ram_byte(0xF800, x); // PRG RAM ENABLE write_prg_byte(0x4800, sdBuffer[x]); // DATA PORT } } else { // SRAM 8K for (int i = 0; i < 64; i++) { // Init Register write_ram_byte(0xF800, 0x40); // PRG RAM WRITE ENABLE } write_ram_byte(0xF800, 0x40); // PRG RAM WRITE ENABLE for (word address = 0; address < 0x2000; address += 512) { // 8K sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { write_prg_byte(base + address + x, sdBuffer[x]); } } write_ram_byte(0xF800, 0x0F); // PRG RAM WRITE PROTECT } break; case 80: // 1K write_prg_byte(0x7EF8, 0xA3); // PRG RAM ENABLE 0 write_prg_byte(0x7EF9, 0xA3); // PRG RAM ENABLE 1 for (word address = 0x1F00; address < 0x2000; address += 512) { // PRG RAM 1K ($7F00-$7FFF) sdFile.read(sdBuffer, 128); for (int x = 0; x < 128; x++) { write_prg_byte(base + address + x, sdBuffer[x]); } } write_prg_byte(0x7EF8, 0xFF); // PRG RAM DISABLE 0 write_prg_byte(0x7EF9, 0xFF); // PRG RAM DISABLE 1 break; case 82: // 5K write_prg_byte(0x7EF7, 0xCA); // PRG RAM ENABLE 0 ($6000-$67FF) write_prg_byte(0x7EF8, 0x69); // PRG RAM ENABLE 1 ($6800-$6FFF) write_prg_byte(0x7EF9, 0x84); // PRG RAM ENABLE 2 ($7000-$73FF) for (word address = 0x0; address < 0x1400; address += 1024) { // PRG RAM 5K ($6000-$73FF) sdFile.read(sdBuffer, 512); firstbyte = sdBuffer[0]; for (int x = 0; x < 512; x++) write_prg_byte(base + address + x, sdBuffer[x]); sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) write_prg_byte(base + address + x + 512, sdBuffer[x]); write_prg_byte(base + address, firstbyte); // REWRITE 1ST BYTE } write_prg_byte(0x7EF7, 0xFF); // PRG RAM DISABLE 0 ($6000-$67FF) write_prg_byte(0x7EF8, 0xFF); // PRG RAM DISABLE 1 ($6800-$6FFF) write_prg_byte(0x7EF9, 0xFF); // PRG RAM DISABLE 2 ($7000-$73FF) break; default: if (mapper == 118) // 8K write_prg_byte(0xA001, 0x80); // PRG RAM CHIP ENABLE - Chip Enable, Allow Writes else if ((mapper == 21) || (mapper == 25)) // 8K write_prg_byte(0x8000, 0); else if (mapper == 26) // 8K write_prg_byte(0xB003, 0x80); // PRG RAM ENABLE // else if (mapper == 68) // 8K // write_reg_byte(0xF000, 0x10); // PRG RAM ENABLE [WRITE RAM SAFE] else if (mapper == 69) { // 8K write_prg_byte(0x8000, 8); // Command Register - PRG Bank 0 write_prg_byte(0xA000, 0xC0); // Parameter Register - PRG RAM Enabled, PRG RAM, Bank 0 to $6000-$7FFF } else if (mapper == 85) // 8K write_ram_byte(0xE000, 0x80); // PRG RAM ENABLE else if (mapper == 153) // 8K write_prg_byte(0x800D, 0x20); // PRG RAM Chip Enable for (word address = 0; address < 0x2000; address += 512) { // 8K sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { write_prg_byte(base + address + x, sdBuffer[x]); } } if (mapper == 118) // 8K write_prg_byte(0xA001, 0xC0); // PRG RAM CHIP ENABLE - Chip Enable, Write Protect else if (mapper == 26) // 8K write_prg_byte(0xB003, 0); // PRG RAM DISABLE // else if (mapper == 68) // 8K // write_reg_byte(0xF000, 0x00); // PRG RAM DISABLE [WRITE RAM SAFE] else if (mapper == 69) { // 8K write_prg_byte(0x8000, 8); // Command Register - PRG Bank 0 write_prg_byte(0xA000, 0); // Parameter Register - PRG RAM Disabled, PRG ROM, Bank 0 to $6000-$7FFF } else if (mapper == 85) // 8K write_reg_byte(0xE000, 0); // PRG RAM DISABLE [WRITE RAM SAFE] break; } sdFile.close(); LED_GREEN_ON; println_Msg(F("")); println_Msg(F("RAM FILE WRITTEN!")); display_Update(); } else { print_Error(F("SD ERROR"), true); } } display_Clear(); LED_RED_OFF; LED_GREEN_OFF; sd.chdir(); // root filePath[0] = '\0'; // Reset filePath } /****************************************** Eeprom Functions *****************************************/ // EEPROM MAPPING // 00-01 FOLDER # // 02-05 SNES/GB READER SETTINGS // 06 LED - ON/OFF [SNES/GB] // 07 MAPPER // 08 PRG SIZE // 09 CHR SIZE // 10 RAM SIZE void resetEEPROM() { EEPROM_writeAnything(0, 0); // FOLDER # EEPROM_writeAnything(2, 0); // CARTMODE EEPROM_writeAnything(3, 0); // RETRY EEPROM_writeAnything(4, 0); // STATUS EEPROM_writeAnything(5, 0); // UNKNOWNCRC EEPROM_writeAnything(6, 1); // LED (RESET TO ON) EEPROM_writeAnything(7, 0); // MAPPER EEPROM_writeAnything(8, 0); // PRG SIZE EEPROM_writeAnything(9, 0); // CHR SIZE EEPROM_writeAnything(10, 0); // RAM SIZE } void EepromStart_NES() { write_prg_byte(0x800D, 0x00); // sda low, scl low write_prg_byte(0x800D, 0x60); // sda, scl high write_prg_byte(0x800D, 0x20); // sda low, scl high write_prg_byte(0x800D, 0x00); // START } void EepromStop_NES() { write_prg_byte(0x800D, 0x00); // sda, scl low write_prg_byte(0x800D, 0x20); // sda low, scl high write_prg_byte(0x800D, 0x60); // sda, scl high write_prg_byte(0x800D, 0x40); // sda high, scl low write_prg_byte(0x800D, 0x00); // STOP } void EepromSet0_NES() { write_prg_byte(0x800D, 0x00); // sda low, scl low write_prg_byte(0x800D, 0x20); // sda low, scl high // 0 write_prg_byte(0x800D, 0x00); // sda low, scl low } void EepromSet1_NES() { write_prg_byte(0x800D, 0x40); // sda high, scl low write_prg_byte(0x800D, 0x60); // sda high, scl high // 1 write_prg_byte(0x800D, 0x40); // sda high, scl low write_prg_byte(0x800D, 0x00); // sda low, scl low } void EepromStatus_NES() { // ACK write_prg_byte(0x800D, 0x40); // sda high, scl low write_prg_byte(0x800D, 0x60); // sda high, scl high write_prg_byte(0x800D, 0xE0); // sda high, scl high, read high byte eepStatus = 1; do { eepStatus = (read_prg_byte(0x6000) & 0x10) >> 4; delayMicroseconds(4); } while (eepStatus == 1); write_prg_byte(0x800D, 0x40); // sda high, scl low } void EepromReadData_NES() { // read serial data into buffer for (int i = 0; i < 8; i++) { write_prg_byte(0x800D, 0x60); // sda high, scl high, read low write_prg_byte(0x800D, 0xE0); // sda high, scl high, read high eepbit[i] = (read_prg_byte(0x6000) & 0x10) >> 4; // Read 0x6000 with Mask 0x10 (bit 4) write_prg_byte(0x800D, 0x40); // sda high, scl low } } void EepromDevice_NES() { // 24C02 ONLY EepromSet1_NES(); EepromSet0_NES(); EepromSet1_NES(); EepromSet0_NES(); EepromSet0_NES(); // A2 EepromSet0_NES(); // A1 EepromSet0_NES(); // A0 } void EepromReadMode_NES() { EepromSet1_NES(); // READ EepromStatus_NES(); // ACK } void EepromWriteMode_NES() { EepromSet0_NES(); // WRITE EepromStatus_NES(); // ACK } void EepromFinish_NES() { write_prg_byte(0x800D, 0x00); // sda low, scl low write_prg_byte(0x800D, 0x40); // sda high, scl low write_prg_byte(0x800D, 0x60); // sda high, scl high write_prg_byte(0x800D, 0x40); // sda high, scl low write_prg_byte(0x800D, 0x00); // sda low, scl low } void EepromSetAddress01(byte address) { // 24C01 [Little Endian] for (int i = 0; i < 7; i++) { if (address & 0x1) // Bit is HIGH EepromSet1_NES(); else // Bit is LOW EepromSet0_NES(); address >>= 1; // rotate to the next bit } } void EepromSetAddress02(byte address) { // 24C02 for (int i = 0; i < 8; i++) { if ((address >> 7) & 0x1) // Bit is HIGH EepromSet1_NES(); else // Bit is LOW EepromSet0_NES(); address <<= 1; // rotate to the next bit } EepromStatus_NES(); // ACK } void EepromWriteData01() { // 24C01 [Little Endian] for (int i = 0; i < 8; i++) { if (eeptemp & 0x1) // Bit is HIGH EepromSet1_NES(); else // Bit is LOW EepromSet0_NES(); eeptemp >>= 1; // rotate to the next bit } EepromStatus_NES(); // ACK } void EepromWriteData02() { // 24C02 for (int i = 0; i < 8; i++) { if ((eeptemp >> 7) & 0x1) // Bit is HIGH EepromSet1_NES(); else // Bit is LOW EepromSet0_NES(); eeptemp <<= 1; // rotate to the next bit } EepromStatus_NES(); // ACK } void EepromREAD(byte address) { EepromStart_NES(); // START if (mapper == 159) { // 24C01 EepromSetAddress01(address); // 24C01 [Little Endian] EepromReadMode_NES(); EepromReadData_NES(); EepromFinish_NES(); EepromStop_NES(); // STOP // OR 8 bits into byte eeptemp = eepbit[7] << 7 | eepbit[6] << 6 | eepbit[5] << 5 | eepbit[4] << 4 | eepbit[3] << 3 | eepbit[2] << 2 | eepbit[1] << 1 | eepbit[0]; } else { // 24C02 EepromDevice_NES(); // DEVICE [1010] + ADDR [A2-A0] EepromWriteMode_NES(); EepromSetAddress02(address); EepromStart_NES(); // START EepromDevice_NES(); // DEVICE [1010] + ADDR [A2-A0] EepromReadMode_NES(); EepromReadData_NES(); EepromFinish_NES(); EepromStop_NES(); // STOP // OR 8 bits into byte eeptemp = eepbit[0] << 7 | eepbit[1] << 6 | eepbit[2] << 5 | eepbit[3] << 4 | eepbit[4] << 3 | eepbit[5] << 2 | eepbit[6] << 1 | eepbit[7]; } sdBuffer[address] = eeptemp; } void EepromWRITE(byte address) { eeptemp = sdBuffer[address]; EepromStart_NES(); // START if (mapper == 159) { // 24C01 EepromSetAddress01(address); // 24C01 [Little Endian] EepromWriteMode_NES(); EepromWriteData01(); // 24C01 [Little Endian] } else { // 24C02 EepromDevice_NES(); // DEVICE [1010] + ADDR [A2-A0] EepromWriteMode_NES(); EepromSetAddress02(address); EepromWriteData02(); } EepromStop_NES(); // STOP } /****************************************** NESmaker Flash Cart [SST 39SF40] *****************************************/ void NESmaker_ResetFlash() { // Reset Flash write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xAA); write_prg_byte(0xC000, 0x00); write_prg_byte(0xAAAA, 0x55); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xFF); // Reset } // SST 39SF040 Software ID void NESmaker_ID() { // Read Flash ID NESmaker_ResetFlash(); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xAA); write_prg_byte(0xC000, 0x00); write_prg_byte(0xAAAA, 0x55); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0x90); // Software ID Entry unsigned char ID1 = read_prg_byte(0x8000); unsigned char ID2 = read_prg_byte(0x8001); sprintf(flashID, "%02X%02X", ID1, ID2); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xAA); write_prg_byte(0xC000, 0x00); write_prg_byte(0xAAAA, 0x55); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xF0); // Software ID Exit if (strcmp(flashID, "BFB7") == 0) // SST 39SF040 flashfound = 1; } void NESmaker_SectorErase(byte bank, word address) { write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xAA); write_prg_byte(0xC000, 0x00); write_prg_byte(0xAAAA, 0x55); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0x80); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xAA); write_prg_byte(0xC000, 0x00); write_prg_byte(0xAAAA, 0x55); write_prg_byte(0xC000, bank); // $00-$1F write_prg_byte(address, 0x30); // Sector Erase ($8000/$9000/$A000/$B000) } void NESmaker_ByteProgram(byte bank, word address, byte data) { write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xAA); write_prg_byte(0xC000, 0x00); write_prg_byte(0xAAAA, 0x55); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xA0); write_prg_byte(0xC000, bank); // $00-$1F write_prg_byte(address, data); // $8000-$BFFF } // SST 39SF040 Chip Erase [NOT IMPLEMENTED] void NESmaker_ChipErase() { // Typical 70ms write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xAA); write_prg_byte(0xC000, 0x00); write_prg_byte(0xAAAA, 0x55); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0x80); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0xAA); write_prg_byte(0xC000, 0x00); write_prg_byte(0xAAAA, 0x55); write_prg_byte(0xC000, 0x01); write_prg_byte(0x9555, 0x10); // Chip Erase } void writeFLASH() { display_Clear(); if (!flashfound) { LED_RED_ON; println_Msg(F("FLASH NOT DETECTED")); display_Update(); } else { print_Msg(F("Flash ID: ")); println_Msg(flashID); println_Msg(F("")); println_Msg(F("NESmaker Flash Found")); println_Msg(F("")); display_Update(); delay(100); fileBrowser(F("Select FLASH File")); word base = 0x8000; sd.chdir(); sprintf(filePath, "%s/%s", filePath, fileName); LED_RED_ON; display_Clear(); println_Msg(F("Writing File: ")); println_Msg(filePath); println_Msg(fileName); display_Update(); //open file on sd card if (sdFile.open(filePath, O_READ)) { banks = int_pow(2, prgsize); // 256K/512K for (int i = 0; i < banks; i++) { // 16K Banks for (word sector = 0; sector < 0x4000; sector += 0x1000) { // 4K Sectors ($8000/$9000/$A000/$B000) // Sector Erase NESmaker_SectorErase(i, base + sector); delay(18); // Typical 18ms for (byte j = 0; j < 2; j++) { // Confirm erase twice do { bytecheck = read_prg_byte(base + sector); delay(18); } while (bytecheck != 0xFF); } // Program Byte for (word addr = 0x0; addr < 0x1000; addr += 512) { sdFile.read(sdBuffer, 512); for (int x = 0; x < 512; x++) { word location = base + sector + addr + x; NESmaker_ByteProgram(i, base + sector + addr + x, sdBuffer[x]); delayMicroseconds(14); // Typical 14us for (byte k = 0; k < 2; k++) { // Confirm write twice do { bytecheck = read_prg_byte(base + sector + addr + x); delayMicroseconds(14); } while (bytecheck != sdBuffer[x]); } } } } #if defined(enable_OLED) display.print(F("*")); display.display(); #elif defined(enable_LCD) display.print(F("*")); display.updateDisplay(); #else Serial.print(F("*")); if ((i != 0) && ((i + 1) % 16 == 0)) Serial.println(F("")); #endif } sdFile.close(); LED_GREEN_ON; println_Msg(F("")); println_Msg(F("FLASH FILE WRITTEN!")); display_Update(); } else { LED_RED_ON; println_Msg(F("SD ERROR")); display_Update(); } } display_Clear(); LED_RED_OFF; LED_GREEN_OFF; sd.chdir(); // root filePath[0] = '\0'; // Reset filePath } #endif //****************************************** // End of File //******************************************