mirror of
https://github.com/sanni/cartreader.git
synced 2024-12-30 15:01:53 +01:00
730 lines
20 KiB
C++
730 lines
20 KiB
C++
//******************************************
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// ATARI 2600 MODULE
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//******************************************
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#if defined(ENABLE_2600)
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// Atari 2600
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// Cartridge Pinout
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// 24P 2.54mm pitch connector
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//
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// LABEL SIDE
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//
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// GND +5V A8 A9 A11 A10 A12 D7 D6 D5 D4 D3
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// +--------------------------------------------------+
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// | 24 23 22 21 20 19 18 17 16 15 14 13 |
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// LEFT | | RIGHT
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// | 1 2 3 4 5 6 7 8 9 10 11 12 |
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// +--------------------------------------------------+
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// A7 A6 A5 A4 A3 A2 A1 A0 D0 D1 D2 GND
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//
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// BOTTOM SIDE
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// Cart Configurations
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// Format = {mapper,romsize}
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static const byte PROGMEM a2600mapsize[] = {
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0x04, 5, // Atari 32K with RAM (F4SC)
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0x06, 4, // Atari 16K with RAM (F6SC)
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0x08, 2, // Atari 8K with RAM (F8SC)
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0x20, 0, // 2K
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0x3F, 2, // Tigervision 8K
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0x40, 1, // 4K [DEFAULT]
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0xC0, 0, // "CV" Commavid 2K
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0xD0, 2, // "DPC" Pitfall II 10K
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0xE0, 2, // Parker Bros 8K
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0xE7, 4, // M-Network 16K
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0xF0, 6, // Megaboy 64K
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0xF4, 5, // Atari 32K
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0xF6, 4, // Atari 16K
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0xF8, 2, // Atari 8K
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0xFA, 3, // CBS RAM Plus 12K
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0xFE, 2, // Activision 8K
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0xF9, 2, // "TP" Time Pilot 8K
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0x0A, 2, // "UA" UA Ltd 8K
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0x3E, 5, // Tigervision 32K with 32K RAM
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0x07, 6, // X07 64K ROM
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};
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byte a2600mapcount = (sizeof(a2600mapsize) / sizeof(a2600mapsize[0])) / 2;
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byte a2600mapselect;
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int a2600index;
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byte a2600[] = { 2, 4, 8, 12, 16, 32, 64 };
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byte a2600mapper = 0;
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byte a2600size;
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// EEPROM MAPPING
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// 07 MAPPER
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// 08 ROM SIZE
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//******************************************
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// Menu
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//******************************************
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// Base Menu
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static const char a2600MenuItem3[] PROGMEM = "Set Mapper";
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static const char* const menuOptions2600[] PROGMEM = { FSTRING_SELECT_CART, FSTRING_READ_ROM, a2600MenuItem3, FSTRING_RESET };
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void setup_2600() {
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// Request 5V
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setVoltage(VOLTS_SET_5V);
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// Set Address Pins to Output
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// Atari 2600 uses A0-A12 [A13-A23 UNUSED]
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//A0-A7
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DDRF = 0xFF;
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//A8-A15
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DDRK = 0xFF;
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//A16-A23
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DDRL = 0xFF;
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// Set Control Pins to Output [UNUSED]
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// ---(PH0) ---(PH1) ---(PH3) ---(PH4) ---(PH5) ---(PH6)
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DDRH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
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// Set TIME(PJ0) to Output (UNUSED)
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DDRJ |= (1 << 0);
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// Set Pins (D0-D7) to Input
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DDRC = 0x00;
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// Setting Control Pins to HIGH [UNUSED]
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// ---(PH0) ---(PH1) ---(PH3) ---(PH4) ---(PH5) ---(PH6)
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PORTH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
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// Set Unused Data Pins (PA0-PA7) to Output
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DDRA = 0xFF;
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// Set Unused Pins HIGH
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PORTA = 0xFF;
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PORTL = 0xFF; // A16-A23
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PORTJ |= (1 << 0); // TIME(PJ0)
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checkStatus_2600();
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strcpy(romName, "ATARI");
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mode = CORE_2600;
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}
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void a2600Menu() {
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convertPgm(menuOptions2600, 4);
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uint8_t mainMenu = question_box(F("ATARI 2600 MENU"), menuOptions, 4, 0);
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switch (mainMenu) {
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case 0:
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// Select Cart
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setCart_2600();
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setup_2600();
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break;
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case 1:
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// Read ROM
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sd.chdir("/");
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readROM_2600();
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sd.chdir("/");
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break;
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case 2:
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// Set Mapper
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setMapper_2600();
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checkStatus_2600();
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break;
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case 3:
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// reset
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resetArduino();
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break;
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}
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}
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//******************************************
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// READ CODE
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//******************************************
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uint8_t readData_2600(uint16_t addr) // Add Input Pullup
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{
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PORTF = addr & 0xFF; // A0-A7
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PORTK = (addr >> 8) & 0xFF; // A8-A12
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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DDRC = 0x00; // Set to Input
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PORTC = 0xFF; // Input Pullup
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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uint8_t ret = PINC;
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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return ret;
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}
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void readSegment_2600(uint16_t startaddr, uint16_t endaddr) {
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for (uint16_t addr = startaddr; addr < endaddr; addr += 512) {
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readDataArray_2600(addr, 512);
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}
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}
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void readDataArray_2600(uint16_t addr, uint16_t size) {
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for (uint16_t w = 0; w < size; w++) {
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sdBuffer[w] = readData_2600(addr + w);
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}
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myFile.write(sdBuffer, size);
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}
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void readSegmentF8_2600(uint16_t startaddr, uint16_t endaddr, uint16_t bankaddr) {
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for (uint16_t addr = startaddr; addr < endaddr; addr += 512) {
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for (uint16_t w = 0; w < 512; w++) {
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if (addr > 0x1FF9) // SET BANK ADDRESS FOR 0x1FFA-0x1FFF
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readData_2600(bankaddr);
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uint8_t temp = readData_2600(addr + w);
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sdBuffer[w] = temp;
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}
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myFile.write(sdBuffer, 512);
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}
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}
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void readSegmentE7_2600(uint8_t start, uint8_t end) {
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for (uint8_t x = start; x <= end; x++) {
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readData_2600(0x1FE0 + x);
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readSegment_2600(0x1000, 0x1800);
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}
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}
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void readSegmentFx_2600(bool hasRAM, uint16_t size) {
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if(hasRAM) {
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outputFF_2600(0x100); // Skip 0x1000-0x10FF RAM
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readDataArray_2600(0x1100, 0x100);
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} else {
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readSegment_2600(0x1000, 0x1200);
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}
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readSegment_2600(0x1200, 0x1E00);
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// Split Read of Last 0x200 bytes
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readDataArray_2600(0x1E00, size);
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}
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void readSegmentTigervision_2600(uint8_t banks) {
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for (uint8_t x = 0; x < banks; x++) {
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writeData3F_2600(0x3F, x);
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readSegment_2600(0x1000, 0x1800);
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}
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readSegment_2600(0x1800, 0x2000);
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}
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void outputFF_2600(uint16_t size) {
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memset(sdBuffer, 0xFF, size * sizeof(sdBuffer[0]));
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myFile.write(sdBuffer, size);
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}
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void writeData_2600(uint16_t addr, uint8_t data) {
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PORTF = addr & 0xFF; // A0-A7
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PORTK = (addr >> 8) & 0xFF; // A8-A12
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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DDRC = 0xFF; // Set to Output
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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PORTC = data;
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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DDRC = 0x00; // Reset to Input
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}
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void writeData3F_2600(uint16_t addr, uint8_t data) {
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PORTF = addr & 0xFF; // A0-A7
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PORTK = (addr >> 8) & 0xFF; // A8-A12
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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DDRC = 0xFF; // Set to Output
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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PORTC = data;
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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// Address (0x1000);
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PORTF = 0x00; // A0-A7
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PORTK = 0x10; // A8-A12
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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NOP;
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DDRC = 0x00; // Reset to Input
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}
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// E7 Mapper Check - Check Bank for FFs
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boolean checkE7(uint16_t bank) {
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writeData_2600(0x1800, 0xFF);
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readData_2600(0x1FE0 + bank);
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uint32_t testdata = ((uint32_t)readData_2600(0x1000) << 24) | ((uint32_t)readData_2600(0x1001) << 16) | (readData_2600(0x1002) << 8) | (readData_2600(0x1003));
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return (testdata == 0xFFFFFFFF);
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}
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void readROM_2600() {
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createFolderAndOpenFile("ATARI", "ROM", romName, "a26");
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// ROM Start 0xF000
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// Address A12-A0 = 0x1000 = 1 0000 0000 0000 = 4KB
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// Read Start 0x1000
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switch (a2600mapper) {
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case 0x20: // 2K Standard 2KB
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readSegment_2600(0x1000, 0x1800);
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break;
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case 0x3F: // 3F Mapper 8KB
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readSegmentTigervision_2600(3);
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break;
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case 0x3E: // 3E Mapper 32KB ROM 32K RAM
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readSegmentTigervision_2600(15);
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break;
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case 0x40: // 4K Default 4KB
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readSegment_2600(0x1000, 0x2000);
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break;
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case 0xC0: // CV Mapper 2KB
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readSegment_2600(0x1800, 0x2000);
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break;
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case 0xD0: // DPC Mapper 10KB
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// 8K ROM
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for (int x = 0; x < 0x2; x++) {
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readData_2600(0x1FF8 + x);
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// Split Read of 1st 0x200 bytes
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// 0x0000-0x0080 are DPC Registers (Random on boot)
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outputFF_2600(0x80); // Output 0xFFs for Registers
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readDataArray_2600(0x1080, 0x180);
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// Read Segment
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readSegment_2600(0x1200, 0x1800);
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// 0x1000-0x1080 are DPC Registers (Random on boot)
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outputFF_2600(0x80); // Output 0xFFs for Registers
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readDataArray_2600(0x1880, 0x180);
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// Read Segment
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readSegment_2600(0x1A00, 0x1E00);
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// Split Read of Last 0x200 bytes
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readDataArray_2600(0x1E00, 0x1F8);
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for (int z = 0; z < 8; z++) {
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// Set Bank to ensure 0x1FFA-0x1FFF is correct
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readData_2600(0x1FF8 + x);
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sdBuffer[z] = readData_2600(0x1FF8 + z);
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}
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myFile.write(sdBuffer, 8);
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}
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// 2K DPC Internal Graphics ROM
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// Read Registers 0x1008-0x100F (Graphics 0x1008-0x100C)
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// Write Registers LSB 0x1050-0x1057 AND MSB 0x1058-0x105F
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// Set Data Fetcher 0 Limits
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writeData_2600(0x1040, 0xFF); // MAX for Data Fetcher 0
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writeData_2600(0x1048, 0x00); // MIN for Data Fetcher 0
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// Set Data Fetcher 0 Counter (0x7FF)
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writeData_2600(0x1050, 0xFF); // LSB for Data Fetcher 0
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writeData_2600(0x1058, 0x07); // MSB for Data Fetcher 0
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// Set Data Fetcher 1 Counter (0x7FF)
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writeData_2600(0x1051, 0xFF); // LSB for Data Fetcher 1
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writeData_2600(0x1059, 0x07); // MSB for Data Fetcher 1
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for (int x = 0; x < 0x800; x += 512) {
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for (int y = 0; y < 512; y++) {
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sdBuffer[y] = readData_2600(0x1008); // Data Fetcher 0
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readData_2600(0x1009); // Data Fetcher 1
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}
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myFile.write(sdBuffer, 512);
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}
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break;
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case 0xE0: // E0 Mapper 8KB
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for (int x = 0; x < 0x7; x++) {
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readData_2600(0x1FE0 + x);
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readSegment_2600(0x1000, 0x1400);
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}
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readSegment_2600(0x1C00, 0x2000);
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break;
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case 0xE7: // E7 Mapper 8KB/12KB/16KB
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writeData_2600(0x1800, 0xFF);
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// Check Bank 0 - If 0xFFs then Bump 'n' Jump
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if (checkE7(0)) { // Bump 'n' Jump 8K
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readSegmentE7_2600(4, 6); // Banks 4-6
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}
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// Check Bank 3 - If 0xFFs then BurgerTime
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else if (checkE7(3)) { // BurgerTime 12K
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readSegmentE7_2600(0, 1); // Banks 0+1
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readSegmentE7_2600(4, 6); // Banks 4-6
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}
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else { // Masters of the Universe (or Unknown Cart) 16K
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readSegmentE7_2600(0, 6); // Banks 0-6
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}
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readSegment_2600(0x1800, 0x2000); // Bank 7
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break;
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case 0xF0: // F0 Mapper 64KB
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for (int x = 0; x < 0x10; x++) {
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readData_2600(0x1FF0);
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readSegment_2600(0x1000, 0x2000);
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}
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break;
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case 0x04: // F4SC Mapper 32KB \w RAM
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case 0xF4: // F4 Mapper 32KB
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for (int x = 0; x < 8; x++) {
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readData_2600(0x1FF4 + x);
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readSegmentFx_2600(a2600mapper == 0x04, 0x1F4);
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for (int z = 0; z < 12; z++) {
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// Set Bank to ensure 0x1FFC-0x1FFF is correct
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readData_2600(0x1FF4 + x);
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sdBuffer[z] = readData_2600(0x1FF4 + z);
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}
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myFile.write(sdBuffer, 12);
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}
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break;
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case 0x06: // F6SC Mapper 16KB \w RAM
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case 0xF6: // F6 Mapper 16KB
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for (int w = 0; w < 4; w++) {
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readData_2600(0x1FF6 + w);
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readSegmentFx_2600(a2600mapper == 0x06, 0x1F6);
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// Bank Registers 0x1FF6-0x1FF9
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for (int y = 0; y < 4; y++){
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readData_2600(0x1FFF); // Reset Bank
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sdBuffer[y] = readData_2600(0x1FF6 + y);
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}
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// End of Bank 0x1FFA-0x1FFF
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readData_2600(0x1FFF); // Reset Bank
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readData_2600(0x1FF6 + w); // Set Bank
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for (int z = 4; z < 10; z++) {
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sdBuffer[z] = readData_2600(0x1FF6 + z); // 0x1FFA-0x1FFF
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}
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myFile.write(sdBuffer, 10);
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}
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readData_2600(0x1FFF); // Reset Bank
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break;
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case 0x08: // F8SC Mapper 8KB \w RAM
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case 0xF8: // F8 Mapper 8KB
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for (int w = 0; w < 2; w++) {
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readData_2600(0x1FF8 + w);
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readSegmentFx_2600(a2600mapper == 0x08, 0x1F8);
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// Bank Registers 0x1FF8-0x1FF9
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for (int y = 0; y < 2; y++){
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readData_2600(0x1FFF); // Reset Bank
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sdBuffer[y] = readData_2600(0x1FF8 + y);
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}
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// End of Bank 0x1FFA-0x1FFF
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readData_2600(0x1FFF); // Reset Bank
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readData_2600(0x1FF8 + w); // Set Bank
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for (int z = 2; z < 8; z++) {
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sdBuffer[z] = readData_2600(0x1FF8 + z); // 0x1FFA-0x1FFF
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}
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myFile.write(sdBuffer, 8);
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}
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readData_2600(0x1FFF); // Reset Bank
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break;
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case 0xF9: // Time Pilot Mapper 8KB
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// Bad implementation of the F8 Mapper
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// kevtris swapped the bank order - swapped banks may not match physical ROM data
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// Bankswitch code uses 0x1FFC and 0x1FF9
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for (int w = 3; w >= 0; w -= 3) {
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readData_2600(0x1FF9 + w);
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readSegment_2600(0x1000, 0x1E00);
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// Split Read of Last 0x200 bytes
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readDataArray_2600(0x1E00, 0x1F9);
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readData_2600(0x1FFF); // Reset Bank
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sdBuffer[0] = readData_2600(0x1FF9);
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// End of Bank 0x1FFA-0x1FFF
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readData_2600(0x1FFF); // Reset Bank
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readData_2600(0x1FF9 + w); // Set Bank
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for (int z = 1; z < 7; z++) {
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sdBuffer[z] = readData_2600(0x1FF9 + z); // 0x1FFA-0x1FFF
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}
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myFile.write(sdBuffer, 7);
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}
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// Reset Bank
|
|
readData_2600(0x1FF9);
|
|
readData_2600(0x1FFF);
|
|
readData_2600(0x1FFC);
|
|
break;
|
|
|
|
case 0xFA: // FA Mapper 12KB
|
|
for (int x = 0; x < 0x3; x++) {
|
|
writeData_2600(0x1FF8 + x, 0x1); // Set Bank with D0 HIGH
|
|
readSegment_2600(0x1000, 0x1E00);
|
|
// Split Read of Last 0x200 bytes
|
|
readDataArray_2600(0x1E00, 0x1F8);
|
|
for (int z = 0; z < 8; z++) {
|
|
// Set Bank to ensure 0x1FFB-0x1FFF is correct
|
|
writeData_2600(0x1FF8 + x, 0x1); // Set Bank with D0 HIGH
|
|
sdBuffer[z] = readData_2600(0x1FF8 + z);
|
|
}
|
|
myFile.write(sdBuffer, 8);
|
|
}
|
|
break;
|
|
|
|
case 0xFE: // FE Mapper 8KB
|
|
for (int x = 0; x < 0x2; x++) {
|
|
writeData_2600(0x01FE, 0xF0 ^ (x << 5));
|
|
writeData_2600(0x01FF, 0xF0 ^ (x << 5));
|
|
readSegment_2600(0x1000, 0x2000);
|
|
}
|
|
break;
|
|
|
|
case 0x0A: // UA Mapper 8KB
|
|
readData_2600(0x220);
|
|
readSegment_2600(0x1000, 0x2000);
|
|
readData_2600(0x240);
|
|
readSegment_2600(0x1000, 0x2000);
|
|
break;
|
|
|
|
case 0x07: // X07 Mapper 64K
|
|
for (int x = 0; x < 16; x++) {
|
|
readData_2600(0x080D | (x << 4));
|
|
readSegment_2600(0x1000, 0x2000);
|
|
}
|
|
}
|
|
myFile.close();
|
|
|
|
printCRC(fileName, NULL, 0);
|
|
|
|
println_Msg(FS(FSTRING_EMPTY));
|
|
print_STR(press_button_STR, 1);
|
|
display_Update();
|
|
wait();
|
|
}
|
|
|
|
//******************************************
|
|
// ROM SIZE
|
|
//******************************************
|
|
|
|
void println_Mapper2600(byte mapper) {
|
|
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
|
|
if (mapper == 0x04)
|
|
println_Msg(F("F4SC"));
|
|
else if (mapper == 0x06)
|
|
println_Msg(F("F6SC"));
|
|
else if (mapper == 0x08)
|
|
println_Msg(F("F8SC"));
|
|
else if (mapper == 0x20)
|
|
println_Msg(F("2K"));
|
|
else if (mapper == 0x40)
|
|
println_Msg(F("4K"));
|
|
else if (mapper == 0x0A)
|
|
println_Msg(F("UA"));
|
|
else if (mapper == 0xC0)
|
|
println_Msg(F("CV"));
|
|
else if (mapper == 0xD0)
|
|
println_Msg(F("DPC"));
|
|
else if (mapper == 0xF9)
|
|
println_Msg(F("TP"));
|
|
else if (mapper == 0x07)
|
|
println_Msg(F("X07"));
|
|
else
|
|
println_Msg(mapper, HEX);
|
|
#else
|
|
if (mapper == 0x04)
|
|
Serial.println(F("F4SC"));
|
|
else if (mapper == 0x06)
|
|
Serial.println(F("F6SC"));
|
|
else if (mapper == 0x08)
|
|
Serial.println(F("F8SC"));
|
|
else if (mapper == 0x20)
|
|
Serial.println(F("2K"));
|
|
else if (mapper == 0x40)
|
|
Serial.println(F("4K"));
|
|
else if (mapper == 0x0A)
|
|
Serial.println(F("UA"));
|
|
else if (mapper == 0xC0)
|
|
Serial.println(F("CV"));
|
|
else if (mapper == 0xD0)
|
|
Serial.println(F("DPC"));
|
|
else if (mapper == 0xF9)
|
|
Serial.println(F("TP"));
|
|
else if (mapper == 0x07)
|
|
Serial.println(F("X07"));
|
|
else
|
|
Serial.println(mapper, HEX);
|
|
#endif
|
|
}
|
|
|
|
void checkStatus_2600() {
|
|
EEPROM_readAnything(7, a2600mapper);
|
|
EEPROM_readAnything(8, a2600size);
|
|
if (a2600size > 6) {
|
|
a2600size = 1; // default 4KB
|
|
EEPROM_writeAnything(8, a2600size);
|
|
}
|
|
|
|
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
|
|
display_Clear();
|
|
println_Msg(F("ATARI 2600 READER"));
|
|
println_Msg(FS(FSTRING_CURRENT_SETTINGS));
|
|
println_Msg(FS(FSTRING_EMPTY));
|
|
print_Msg(F("MAPPER: "));
|
|
println_Mapper2600(a2600mapper);
|
|
print_Msg(FS(FSTRING_ROM_SIZE));
|
|
if (a2600mapper == 0xD0)
|
|
print_Msg(F("10"));
|
|
else
|
|
print_Msg(a2600[a2600size]);
|
|
println_Msg(F("K"));
|
|
display_Update();
|
|
wait();
|
|
#else
|
|
Serial.print(F("MAPPER: "));
|
|
println_Mapper2600(a2600mapper);
|
|
|
|
Serial.print(FS(FSTRING_ROM_SIZE));
|
|
if (a2600mapper == 0xD0)
|
|
Serial.print(F("10"));
|
|
else
|
|
Serial.print(a2600[a2600size]);
|
|
Serial.println(F("K"));
|
|
Serial.println(FS(FSTRING_EMPTY));
|
|
#endif
|
|
}
|
|
|
|
//******************************************
|
|
// SET MAPPER
|
|
//******************************************
|
|
|
|
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
|
|
void printMapperSelection_2600(int index) {
|
|
display_Clear();
|
|
print_Msg(FS(FSTRING_MAPPER));
|
|
a2600index = index * 2;
|
|
a2600mapselect = pgm_read_byte(a2600mapsize + a2600index);
|
|
println_Mapper2600(a2600mapselect);
|
|
}
|
|
#endif
|
|
|
|
void setMapper_2600() {
|
|
byte new2600mapper;
|
|
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
|
|
navigateMenu(0, a2600mapcount - 1, &printMapperSelection_2600);
|
|
new2600mapper = a2600mapselect;
|
|
|
|
display.setCursor(0, 56);
|
|
print_Msg(F("MAPPER "));
|
|
println_Mapper2600(new2600mapper);
|
|
println_Msg(F(" SELECTED"));
|
|
display_Update();
|
|
delay(1000);
|
|
#else
|
|
setmapper:
|
|
String newmap;
|
|
Serial.println(F("SUPPORTED MAPPERS:"));
|
|
Serial.println(F("0 = F4SC [Atari 32K \w RAM]"));
|
|
Serial.println(F("1 = F6SC [Atari 16K \w RAM]"));
|
|
Serial.println(F("2 = F8SC [Atari 8K \w RAM]"));
|
|
Serial.println(F("3 = 2K [Standard 2K]"));
|
|
Serial.println(F("4 = 3F [Tigervision 8K]"));
|
|
Serial.println(F("5 = 4K [Standard 4K]"));
|
|
Serial.println(F("6 = CV [Commavid]"));
|
|
Serial.println(F("7 = DPC [Pitfall II]"));
|
|
Serial.println(F("8 = E0 [Parker Bros]"));
|
|
Serial.println(F("9 = E7 [M-Network]"));
|
|
Serial.println(F("10 = F0 [Megaboy]"));
|
|
Serial.println(F("11 = F4 [Atari 32K]"));
|
|
Serial.println(F("12 = F6 [Atari 16K]"));
|
|
Serial.println(F("13 = F8 [Atari 8K]"));
|
|
Serial.println(F("14 = FA [CBS RAM Plus]"));
|
|
Serial.println(F("15 = FE [Activision]"));
|
|
Serial.println(F("16 = TP [Time Pilot 8K]"));
|
|
Serial.println(F("17 = UA [UA Ltd]"));
|
|
Serial.println(F("18 = 3E [Tigervision 32K \w RAM]"));
|
|
Serial.println(F("19 = 07 [X07 64K]"));
|
|
Serial.print(F("Enter Mapper [0-19]: "));
|
|
while (Serial.available() == 0) {}
|
|
newmap = Serial.readStringUntil('\n');
|
|
Serial.println(newmap);
|
|
a2600index = newmap.toInt() * 2;
|
|
new2600mapper = pgm_read_byte(a2600mapsize + a2600index);
|
|
#endif
|
|
EEPROM_writeAnything(7, new2600mapper);
|
|
a2600mapper = new2600mapper;
|
|
|
|
a2600size = pgm_read_byte(a2600mapsize + a2600index + 1);
|
|
EEPROM_writeAnything(8, a2600size);
|
|
}
|
|
|
|
//******************************************
|
|
// CART SELECT CODE
|
|
//******************************************
|
|
void readDataLine_2600(FsFile& database, void* gameMapper) {
|
|
// Read mapper with three ascii character and subtract 48 to convert to decimal
|
|
(*(byte*)gameMapper) = ((database.read() - 48) * 100) + ((database.read() - 48) * 10) + (database.read() - 48);
|
|
|
|
// Skip rest of line
|
|
database.seekCur(2);
|
|
}
|
|
|
|
void setCart_2600() {
|
|
//go to root
|
|
sd.chdir();
|
|
|
|
byte gameMapper;
|
|
|
|
// Select starting letter
|
|
byte myLetter = starting_letter();
|
|
|
|
// Open database
|
|
if (myFile.open("2600.txt", O_READ)) {
|
|
seek_first_letter_in_database(myFile, myLetter);
|
|
|
|
if(checkCartSelection(myFile, &readDataLine_2600, &gameMapper)) {
|
|
EEPROM_writeAnything(7, gameMapper);
|
|
for (int i = 0; i < a2600mapcount; i++) {
|
|
a2600index = i * 2;
|
|
if (gameMapper == pgm_read_byte(a2600mapsize + a2600index)) {
|
|
a2600size = pgm_read_byte(a2600mapsize + a2600index + 1);
|
|
EEPROM_writeAnything(8, a2600size);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
print_FatalError(FS(FSTRING_DATABASE_FILE_NOT_FOUND));
|
|
}
|
|
}
|
|
#endif
|
|
//******************************************
|
|
// End of File
|
|
//******************************************
|