mirror of
https://github.com/sanni/cartreader.git
synced 2024-11-15 01:15:06 +01:00
357 lines
7.2 KiB
C++
357 lines
7.2 KiB
C++
//******************************************
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// LITTLE JAMMER MODULE
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//******************************************
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#ifdef ENABLE_LJ
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// Little Jammer
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// Cartridge Pinout
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// 48P 1.25mm pitch connector
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//
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// FORM FACTOR IS SAME AS BANDAI WONDERSWAN/BENESSE POCKET CHALLENGE V2/LITTLE JAMMER PRO
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// WIRING IS COMPLETELY DIFFERENT!
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//
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// LEFT SIDE
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// 1 VSS (GND)
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// 2 A-1
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// 3 A0
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// 4 A1
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// 5 A2
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// 6 A3
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// 7 A4
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// 8 A5
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// 9 A6
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// 10 A7
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// 11 A8
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// 12 A9
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// 13 A10
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// 14 A11
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// 15 A12
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// 16 A13
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// 17 A14
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// 18 A15
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// 19 A16
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// 20 A17
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// 21 A18
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// 22 A19
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// 23 A20
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// 24 VCC (+5V)
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// 25 VCC (+5V)
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// 26 D0
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// 27 D1
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// 28 D2
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// 29 D3
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// 30 D4
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// 31 D5
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// 32 D6
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// 33 D7
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// 34 /WE
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// 35 /RESET
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// 36 /CE
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// 37 /OE
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// 38 VSS (GND)
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// 39 NC
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// 40 NC
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// 41 NC
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// 42 NC
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// 43 NC
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// 44 NC
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// 45 NC
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// 46 NC
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// 47 VSS (GND)
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// 48 VSS (GND)
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// RIGHT SIDE
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// CONTROL PINS:
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// /RESET(PH0) - SNES RESET
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// /CE(PH3) - SNES /CS
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// /WE(PH5) - SNES /WR
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// /OE(PH6) - SNES /RD
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// LITTLE JAMMER DIRECT ADDRESSING
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// 1 1111 1111 1111 1111 1111
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// 1 F F F F F = 0x1FFFFF
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// Size = 0x200000 = 2MB
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//
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// A20 connection on Pin 23 = 0x400000 = 4MB
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// 11 1111 1111 1111 1111 1111
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// 3 F F F F F = 0x3FFFFF
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// Size = 0x400000 = 4MB
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//******************************************
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// VARIABLES
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//******************************************
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byte LJ[] = {1,2,4};
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byte ljlo = 0; // Lowest Entry
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byte ljhi = 2; // Highest Entry
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byte ljsize;
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byte newljsize;
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boolean ljflashfound = false;
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byte ljbytecheck;
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// EEPROM MAPPING
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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* const menuOptionsLJ[] PROGMEM = { FSTRING_SELECT_CART, FSTRING_READ_ROM, FSTRING_SET_SIZE, FSTRING_RESET };
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void ljMenu()
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{
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convertPgm(menuOptionsLJ, 4);
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uint8_t mainMenu = question_box(F("LITTLE JAMMER MENU"), menuOptions, 4, 0);
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switch (mainMenu)
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{
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// Select Cart
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case 0:
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setCart_LJ();
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setup_LJ();
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break;
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// Read ROM
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case 1:
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sd.chdir("/");
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readROM_LJ();
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sd.chdir("/");
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break;
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// Set Size
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case 2:
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setROMSize_LJ();
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break;
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// Reset
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case 3:
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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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// SETUP
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//******************************************
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void setup_LJ()
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{
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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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// LITTLE JAMMER uses A(-1)-A19 wired to A0-A20 [A21-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
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// /RST(PH0) ---(PH1) /CE(PH3) ---(PH4) /WR(PH5) /OE(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
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// /RST(PH0) ---(PH1) /CE(PH3) ---(PH4) /WR(PH5) /OE(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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PORTJ |= (1 << 0); // TIME(PJ0)
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checkStatus_LJ();
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strcpy(romName, "LJ");
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mode = CORE_LJ;
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}
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//******************************************
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// READ FUNCTIONS
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//******************************************
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uint8_t readData_LJ(uint32_t addr)
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{
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PORTF = addr & 0xFF; // A(-1)-A6
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PORTK = (addr >> 8) & 0xFF; // A7-A14
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PORTL = (addr >> 16) & 0xFF; // A15-A20
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NOP;
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NOP;
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// switch /CE(PH3) to LOW
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PORTH &= ~(1 << 3);
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// switch /OE(PH6) to LOW
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PORTH &= ~(1 << 6);
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NOP;
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NOP;
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uint8_t ret = PINC;
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// switch /CE(PH3) and /OE(PH6) to HIGH
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PORTH |= (1 << 3) | (1 << 6);
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return ret;
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}
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void readSegment_LJ(uint32_t startaddr, uint32_t endaddr)
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{
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for (uint32_t addr = startaddr; addr < endaddr; addr += 512) {
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for (int w = 0; w < 512; w++) {
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uint8_t temp = readData_LJ(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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//******************************************
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// READ ROM
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//******************************************
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void readROM_LJ()
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{
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createFolderAndOpenFile("LJ", "ROM", romName, "bin");
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// Maximum Direct Address Size is 4MB
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readSegment_LJ(0x000000,0x100000); // 1MB
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if (ljsize > 0) // 2MB/4MB
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{
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readSegment_LJ(0x100000,0x200000); // +1MB = 2MB
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if (ljsize > 1) // 4MB
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{
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readSegment_LJ(0x200000,0x400000); // +2MB = 4MB
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}
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}
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myFile.close();
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printCRC(fileName, NULL, 0);
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println_Msg(FS(FSTRING_EMPTY));
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print_STR(press_button_STR, 1);
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display_Update();
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wait();
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}
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//******************************************
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// ROM SIZE
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//******************************************
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#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
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void printRomSize_LJ(int index)
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{
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display_Clear();
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print_Msg(FS(FSTRING_ROM_SIZE));
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println_Msg(LJ[index]);
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}
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#endif
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void setROMSize_LJ()
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{
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byte newljsize;
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#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
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display_Clear();
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if (ljlo == ljhi)
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newljsize = ljlo;
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else {
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newljsize = navigateMenu(ljlo, ljhi, &printRomSize_LJ);
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display.setCursor(0, 56); // Display selection at bottom
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}
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print_Msg(FS(FSTRING_ROM_SIZE));
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print_Msg(LJ[newljsize]);
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println_Msg(F("KB"));
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display_Update();
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delay(1000);
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#else
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if (ljlo == ljhi)
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newljsize = ljlo;
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else {
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setrom:
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String sizeROM;
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for (int i = 0; i < (ljhi - ljlo + 1); i++) {
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Serial.print(F("Select ROM Size: "));
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Serial.print(i);
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Serial.print(F(" = "));
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Serial.print(LJ[i + ljlo]);
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Serial.println(F("KB"));
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}
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Serial.print(F("Enter ROM Size: "));
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while (Serial.available() == 0) {}
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sizeROM = Serial.readStringUntil('\n');
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Serial.println(sizeROM);
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newljsize = sizeROM.toInt() + ljlo;
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if (newljsize > ljhi) {
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Serial.println(F("SIZE NOT SUPPORTED"));
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Serial.println(FS(FSTRING_EMPTY));
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goto setrom;
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}
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}
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Serial.print(F("ROM Size = "));
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Serial.print(LJ[newljsize]);
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Serial.println(F("KB"));
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#endif
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EEPROM_writeAnything(8, newljsize);
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ljsize = newljsize;
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}
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void checkStatus_LJ()
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{
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EEPROM_readAnything(8, ljsize);
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if (ljsize > ljhi) {
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ljsize = 1; // default 2M
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EEPROM_writeAnything(8, ljsize);
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}
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#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
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display_Clear();
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println_Msg(F("LITTLE JAMMER"));
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println_Msg(FS(FSTRING_CURRENT_SETTINGS));
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println_Msg(FS(FSTRING_EMPTY));
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print_Msg(FS(FSTRING_ROM_SIZE));
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print_Msg(LJ[ljsize]);
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println_Msg(F("MB"));
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display_Update();
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wait();
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#else
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Serial.print(FS(FSTRING_ROM_SIZE));
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Serial.print(LJ[ljsize]);
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Serial.println(F("MB"));
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Serial.println(FS(FSTRING_EMPTY));
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#endif
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}
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//******************************************
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// CART SELECT CODE
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//******************************************
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void setCart_LJ()
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{
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//go to root
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sd.chdir();
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byte gameSize;
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// Select starting letter
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//byte myLetter = starting_letter();
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// Open database
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if (myFile.open("ljcart.txt", O_READ)) {
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// seek_first_letter_in_database(myFile, myLetter);
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if(checkCartSelection(myFile, &readDataLineSingleDigit, &gameSize)) {
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EEPROM_writeAnything(8, gameSize);
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}
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} else {
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print_FatalError(FS(FSTRING_DATABASE_FILE_NOT_FOUND));
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}
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}
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#endif
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