mirror of
https://github.com/sanni/cartreader.git
synced 2024-12-30 23:11:57 +01:00
358 lines
9.0 KiB
C++
358 lines
9.0 KiB
C++
//******************************************
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// VECTREX MODULE
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//******************************************
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#ifdef ENABLE_VECTREX
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// Vectrex
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// Cartridge Pinout
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// 36P 2.54mm pitch connector
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//
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// RIGHT
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// +-------+
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// +5V -| 2 1 |- /HALT
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// +5V -| 4 3 |- A7
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// A8 -| 6 5 |- A6
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// A9 -| 8 7 |- A5 B
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// L A11 -| 10 9 |- A4 O
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// A /OE -| 12 11 |- A3 T
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// B A10 -| 14 13 |- A2 T
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// E A15 -| 16 15 |- A1 O
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// L D7 -| 18 17 |- A0 M
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// D6 -| 20 19 |- D0
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// S D5 -| 22 21 |- D1 S
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// I D4 -| 24 23 |- D2 I
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// D D3 -| 26 25 |- GND D
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// E GND -| 28 27 |- GND E
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// R/W -| 30 29 |- A12
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// /CART -| 32 31 |- A13
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// /NMI -| 34 33 |- A14
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// /IRQ -| 36 35 |- PB6
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// +-------+
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// LEFT
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//
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// LABEL SIDE
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//
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// /IRQ /NMI /CART R/W GND D3 D4 D5 D6 D7 A15 A10 /OE A11 A9 A8 +5V +5V
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// +-------------------------------------------------------------------------------------------+
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// | 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 |
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// LEFT | | RIGHT
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// | 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 |
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// +-------------------------------------------------------------------------------------------+
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// PB6 A14 A13 A12 GND GND D2 D1 D0 A0 A1 A2 A3 A4 A5 A6 A7 /HALT
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//
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// BOTTOM SIDE
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// CONTROL PINS:
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// /OE(PH1) - SNES CPUCLK
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// /CART(PH3) - SNES /CS
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// PB6(PH5) - SNES /WR
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// R/W(PH6) - SNES /RD
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//******************************************
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// DEFINES
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//******************************************
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#define CLK_ENABLE PORTH |= (1 << 1) // /E HIGH
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#define CLK_DISABLE PORTH &= ~(1 << 1) // /E LOW
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#define PB6_ENABLE PORTH |= (1 << 5) // PB6 HIGH
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#define PB6_DISABLE PORTH &= ~(1 << 5) // PB6 LOW
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//******************************************
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// VARIABLES
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//******************************************
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byte VECTREX[] = { 4, 8, 12, 16, 32, 64 };
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byte vectrexlo = 0; // Lowest Entry
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byte vectrexhi = 5; // Highest Entry
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byte vectrexsize;
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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 menuOptionsVECTREX[] PROGMEM = { FSTRING_SELECT_CART, FSTRING_READ_ROM, FSTRING_SET_SIZE, FSTRING_RESET };
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void vectrexMenu()
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{
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convertPgm(menuOptionsVECTREX, 4);
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uint8_t mainMenu = question_box(F("VECTREX 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_VECTREX();
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setup_VECTREX();
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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_VECTREX();
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sd.chdir("/");
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break;
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case 2:
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// Set Size
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setROMSize_VECTREX();
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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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// SETUP
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//******************************************
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void setup_VECTREX()
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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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// Vectrex uses A0-A15 [A16-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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// ---(PH0) /OE(PH1) /CART(PH3) ---(PH4) PB6(PH5) R/W(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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// ---(PH0) /OE(PH1) /CART(PH3) ---(PH4) PB6(PH5) R/W(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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// Set /CART LOW
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PORTH &= ~(1 << 3); // Enable Cart
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// Set /OE LOW
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PORTH &= ~(1 << 1); // Output Enable
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checkStatus_VECTREX();
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strcpy(romName, "VECTREX");
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mode = CORE_VECTREX;
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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_VECTREX(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-A15
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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 = 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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NOP;
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NOP;
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NOP;
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NOP;
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NOP; // Added delay for better read
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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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return ret;
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}
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void readSegment_VECTREX(uint16_t startaddr, uint16_t endaddr)
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{
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for (uint16_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_VECTREX(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_VECTREX()
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{
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createFolderAndOpenFile("VECTREX", "ROM", romName, "vec");
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PB6_DISABLE; // PB6 LOW - Switch Bank
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// Standard Carts 4K/8K
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readSegment_VECTREX(0x0000, 0x1000); // 4K
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if (vectrexsize > 0) {
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readSegment_VECTREX(0x1000, 0x2000); // +4K = 8K
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// 12K (Dark Tower)
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if (vectrexsize > 1)
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readSegment_VECTREX(0x2000, 0x3000); // +4K = 12K
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// 16K Carts
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if (vectrexsize > 2)
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readSegment_VECTREX(0x3000, 0x4000); // +4K = 16K
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// Oversize 32K Carts
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if (vectrexsize > 3)
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readSegment_VECTREX(0x4000, 0x8000); // +16K = 32K
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// Oversize 64K Carts
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if (vectrexsize > 4) {
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PB6_ENABLE; // PB6 HIGH - Switch Bank
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readSegment_VECTREX(0x0000, 0x8000); // +32K = 64K
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PB6_DISABLE; // Reset PB6
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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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// Prints string out of the common strings array either with or without newline
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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_VECTREX(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(VECTREX[index]);
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}
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#endif
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void setROMSize_VECTREX()
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{
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byte newvectrexsize;
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#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
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display_Clear();
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if (vectrexlo == vectrexhi)
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newvectrexsize = vectrexlo;
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else {
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newvectrexsize = navigateMenu(vectrexlo, vectrexhi, &printRomSize_VECTREX);
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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(VECTREX[newvectrexsize]);
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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 (vectrexlo == vectrexhi)
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newvectrexsize = vectrexlo;
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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 < (vectrexhi - vectrexlo + 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(VECTREX[i + vectrexlo]);
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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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newvectrexsize = sizeROM.toInt() + vectrexlo;
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if (newvectrexsize > vectrexhi) {
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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(VECTREX[newvectrexsize]);
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Serial.println(F("KB"));
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#endif
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EEPROM_writeAnything(8, newvectrexsize);
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vectrexsize = newvectrexsize;
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}
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void checkStatus_VECTREX()
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{
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EEPROM_readAnything(8, vectrexsize);
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if (vectrexsize > vectrexhi) {
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vectrexsize = 0; // default 4KB
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EEPROM_writeAnything(8, vectrexsize);
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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("VECTREX READER"));
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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(VECTREX[vectrexsize]);
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println_Msg(F("KB"));
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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(VECTREX[vectrexsize]);
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Serial.println(F("KB"));
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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_VECTREX()
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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("vectrexcart.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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