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//******************************************
// VECTREX MODULE
//******************************************
#ifdef ENABLE_VECTREX
// Vectrex
// Cartridge Pinout
// 36P 2.54mm pitch connector
//
// RIGHT
// +-------+
// +5V -| 2 1 |- /HALT
// +5V -| 4 3 |- A7
// A8 -| 6 5 |- A6
// A9 -| 8 7 |- A5 B
// L A11 -| 10 9 |- A4 O
// A /OE -| 12 11 |- A3 T
// B A10 -| 14 13 |- A2 T
// E A15 -| 16 15 |- A1 O
// L D7 -| 18 17 |- A0 M
// D6 -| 20 19 |- D0
// S D5 -| 22 21 |- D1 S
// I D4 -| 24 23 |- D2 I
// D D3 -| 26 25 |- GND D
// E GND -| 28 27 |- GND E
// R/W -| 30 29 |- A12
// /CART -| 32 31 |- A13
// /NMI -| 34 33 |- A14
// /IRQ -| 36 35 |- PB6
// +-------+
// LEFT
//
// LABEL SIDE
//
// /IRQ /NMI /CART R/W GND D3 D4 D5 D6 D7 A15 A10 /OE A11 A9 A8 +5V +5V
// +-------------------------------------------------------------------------------------------+
// | 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 |
// LEFT | | RIGHT
// | 35 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 3 1 |
// +-------------------------------------------------------------------------------------------+
// PB6 A14 A13 A12 GND GND D2 D1 D0 A0 A1 A2 A3 A4 A5 A6 A7 /HALT
//
// BOTTOM SIDE
// CONTROL PINS:
// /OE(PH1) - SNES CPUCLK
// /CART(PH3) - SNES /CS
// PB6(PH5) - SNES /WR
// R/W(PH6) - SNES /RD
//******************************************
// Defines
//******************************************
#define CLK_ENABLE PORTH |= (1 << 1) // /E HIGH
#define CLK_DISABLE PORTH &= ~(1 << 1) // /E LOW
#define PB6_ENABLE PORTH |= (1 << 5) // PB6 HIGH
#define PB6_DISABLE PORTH &= ~(1 << 5) // PB6 LOW
byte VECTREX[] = { 4, 8, 12, 16, 32, 64 };
byte vectrexlo = 0; // Lowest Entry
byte vectrexhi = 5; // Highest Entry
byte vectrexsize;
// EEPROM MAPPING
// 08 ROM SIZE
//******************************************
// Menu
//******************************************
// Base Menu
static const char* const menuOptionsVECTREX[] PROGMEM = { FSTRING_SELECT_CART, FSTRING_READ_ROM, FSTRING_SET_SIZE, FSTRING_RESET };
void setup_VECTREX() {
// Request 5V
setVoltage(VOLTS_SET_5V);
// Set Address Pins to Output
// Vectrex uses A0-A15 [A16-A23 UNUSED]
//A0-A7
DDRF = 0xFF;
//A8-A15
DDRK = 0xFF;
//A16-A23
DDRL = 0xFF;
// Set Control Pins to Output
// ---(PH0) /OE(PH1) /CART(PH3) ---(PH4) PB6(PH5) R/W(PH6)
DDRH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// Set TIME(PJ0) to Output (UNUSED)
DDRJ |= (1 << 0);
// Set Pins (D0-D7) to Input
DDRC = 0x00;
// Setting Control Pins to HIGH
// ---(PH0) /OE(PH1) /CART(PH3) ---(PH4) PB6(PH5) R/W(PH6)
PORTH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// Set Unused Data Pins (PA0-PA7) to Output
DDRA = 0xFF;
// Set Unused Pins HIGH
PORTA = 0xFF;
PORTL = 0xFF; // A16-A23
PORTJ |= (1 << 0); // TIME(PJ0)
// Set /CART LOW
PORTH &= ~(1 << 3); // Enable Cart
// Set /OE LOW
PORTH &= ~(1 << 1); // Output Enable
checkStatus_VECTREX();
strcpy(romName, "VECTREX");
mode = CORE_VECTREX;
}
void vectrexMenu() {
convertPgm(menuOptionsVECTREX, 4);
uint8_t mainMenu = question_box(F("VECTREX MENU"), menuOptions, 4, 0);
switch (mainMenu) {
case 0:
// Select Cart
setCart_VECTREX();
setup_VECTREX();
break;
case 1:
// Read ROM
sd.chdir("/");
readROM_VECTREX();
sd.chdir("/");
break;
case 2:
// Set Size
setROMSize_VECTREX();
break;
case 3:
// reset
resetArduino();
break;
}
}
//******************************************
// READ CODE
//******************************************
uint8_t readData_VECTREX(uint16_t addr) // Add Input Pullup
{
PORTF = addr & 0xFF; // A0-A7
PORTK = (addr >> 8) & 0xFF; // A8-A15
NOP;
NOP;
NOP;
NOP;
NOP;
PORTC = 0xFF; // Input Pullup
NOP;
NOP;
NOP;
NOP;
NOP;
NOP;
NOP;
NOP;
NOP;
NOP; // Added delay for better read
NOP;
NOP;
NOP;
NOP;
NOP;
uint8_t ret = PINC;
return ret;
}
void readSegment_VECTREX(uint16_t startaddr, uint16_t endaddr) {
for (uint16_t addr = startaddr; addr < endaddr; addr += 512) {
for (int w = 0; w < 512; w++) {
uint8_t temp = readData_VECTREX(addr + w);
sdBuffer[w] = temp;
}
myFile.write(sdBuffer, 512);
}
}
//******************************************
// READ ROM
//******************************************
void readROM_VECTREX() {
createFolderAndOpenFile("VECTREX", "ROM", romName, "vec");
PB6_DISABLE; // PB6 LOW - Switch Bank
// Standard Carts 4K/8K
readSegment_VECTREX(0x0000, 0x1000); // 4K
if (vectrexsize > 0) {
readSegment_VECTREX(0x1000, 0x2000); // +4K = 8K
// 12K (Dark Tower)
if (vectrexsize > 1)
readSegment_VECTREX(0x2000, 0x3000); // +4K = 12K
// 16K Carts
if (vectrexsize > 2)
readSegment_VECTREX(0x3000, 0x4000); // +4K = 16K
// Oversize 32K Carts
if (vectrexsize > 3)
readSegment_VECTREX(0x4000, 0x8000); // +16K = 32K
// Oversize 64K Carts
if (vectrexsize > 4) {
PB6_ENABLE; // PB6 HIGH - Switch Bank
readSegment_VECTREX(0x0000, 0x8000); // +32K = 64K
PB6_DISABLE; // Reset PB6
}
}
myFile.close();
printCRC(fileName, NULL, 0);
println_Msg(FS(FSTRING_EMPTY));
// Prints string out of the common strings array either with or without newline
print_STR(press_button_STR, 1);
display_Update();
wait();
}
//******************************************
// ROM SIZE
//******************************************
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
void printRomSize_VECTREX(int index) {
display_Clear();
print_Msg(FS(FSTRING_ROM_SIZE));
println_Msg(VECTREX[index]);
}
#endif
void setROMSize_VECTREX() {
byte newvectrexsize;
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
display_Clear();
if (vectrexlo == vectrexhi)
newvectrexsize = vectrexlo;
else {
newvectrexsize = navigateMenu(vectrexlo, vectrexhi, &printRomSize_VECTREX);
display.setCursor(0, 56); // Display selection at bottom
}
print_Msg(FS(FSTRING_ROM_SIZE));
print_Msg(VECTREX[newvectrexsize]);
println_Msg(F("KB"));
display_Update();
delay(1000);
#else
if (vectrexlo == vectrexhi)
newvectrexsize = vectrexlo;
else {
setrom:
String sizeROM;
for (int i = 0; i < (vectrexhi - vectrexlo + 1); i++) {
Serial.print(F("Select ROM Size: "));
Serial.print(i);
Serial.print(F(" = "));
Serial.print(VECTREX[i + vectrexlo]);
Serial.println(F("KB"));
}
Serial.print(F("Enter ROM Size: "));
while (Serial.available() == 0) {}
sizeROM = Serial.readStringUntil('\n');
Serial.println(sizeROM);
newvectrexsize = sizeROM.toInt() + vectrexlo;
if (newvectrexsize > vectrexhi) {
Serial.println(F("SIZE NOT SUPPORTED"));
Serial.println(FS(FSTRING_EMPTY));
goto setrom;
}
}
Serial.print(F("ROM Size = "));
Serial.print(VECTREX[newvectrexsize]);
Serial.println(F("KB"));
#endif
EEPROM_writeAnything(8, newvectrexsize);
vectrexsize = newvectrexsize;
}
void checkStatus_VECTREX() {
EEPROM_readAnything(8, vectrexsize);
if (vectrexsize > 2) {
vectrexsize = 0; // default 4KB
EEPROM_writeAnything(8, vectrexsize);
}
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
display_Clear();
println_Msg(F("VECTREX READER"));
println_Msg(FS(FSTRING_CURRENT_SETTINGS));
println_Msg(FS(FSTRING_EMPTY));
print_Msg(FS(FSTRING_ROM_SIZE));
print_Msg(VECTREX[vectrexsize]);
println_Msg(F("KB"));
display_Update();
wait();
#else
Serial.print(FS(FSTRING_ROM_SIZE));
Serial.print(VECTREX[vectrexsize]);
Serial.println(F("KB"));
Serial.println(FS(FSTRING_EMPTY));
#endif
}
//******************************************
// CART SELECT CODE
//******************************************
void setCart_VECTREX() {
//go to root
sd.chdir();
byte gameSize;
// Select starting letter
//byte myLetter = starting_letter();
// Open database
if (myFile.open("vectrexcart.txt", O_READ)) {
// seek_first_letter_in_database(myFile, myLetter);
if(checkCartSelection(myFile, &readDataLineSingleDigit, &gameSize)) {
EEPROM_writeAnything(8, gameSize);
}
} else {
print_FatalError(FS(FSTRING_DATABASE_FILE_NOT_FOUND));
}
}
#endif
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