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cartreader/Cart_Reader/INTV.ino

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//******************************************
// INTELLIVISION MODULE
//******************************************
#ifdef ENABLE_INTV
// Mattel Intellivision
// Cartridge Pinout
// 44P 2.54mm pitch connector
//
// TOP SIDE BOTTOM SIDE
// (EVEN) (ODD)
// +-------+
// GND -| 2 1 |- GND
// CBLNK -| 4 3 |- /MSYNC
// EXT AUD -| 6 5 |- DB7
// EXT VID -| 8 7 |- DB8
// MCLK -| 10 9 |- DB6
// RESET -| 12 11 |- DB9
// SR1 -| 14 13 |- DB5
// VOICE -| 16 15 |- DB10
// VOICE -| 18 17 |- DB4
// GND -| 20 19 |- DB11
// GND -| 22 21 |- DB3
// GND -| 24 23 |- DB12
// GND -| 26 25 |- DB13
// GND -| 28 27 |- DB2
// /BUSAK -| 30 29 |- DB14
// BC1 -| 32 31 |- DB1
// BC2 -| 34 33 |- DB0
// BDIR -| 36 35 |- DB15
// BDIR -| 38 37 |- BDIR
// BC2 -| 40 39 |- BC2
// BC1 -| 42 41 |- BC1
// GND -| 44 43 |- VCC(+5V)
// +-------+
// CONTROL PINS:
// /MSYNC(PH3)- PIN 3 [ROM PIN 14]
// BC1(PH4) - PIN 41 [ROM PIN 28]
// BC2(PH5) - PIN 39 [ROM PIN 27]
// BDIR(PH6) - PIN 37 [ROM PIN 26]
// NOTE: BDIR/BC1/BC2 ONLY CONNECTED TO BOTTOM (ODD) PINS
// NOT CONNECTED:
// RESET(PH0) - N/C - GND IN CART
// MCLK(PH1) - N/C - GND IN CART
// BUS PROTOCOL COMMANDS - BDIR/BC1/BC2
// NO ACTION (NACT): 0/0/0
// ADDR TO REG (ADAR): 0/1/0
// INT ADDR TO BUS (IAB): 0/0/1
// DATA TO BUS (DTB): 0/1/1
// BUS TO ADDR (BAR): 1/0/0
// DATA WRITE (DW): 1/1/0
// DATA WRITE STROBE (DWS): 1/0/1
// INTERRUPT ACK (INTAK): 1/1/1
// Cart Configurations
// Format = {mapper,romlo,romhi,ramsize}
static const byte PROGMEM intvmapsize[] = {
0, 0, 3, 0, // default mattel up to 32K (8K/12K/16K/24K/32K)
1, 2, 4, 0, // demo cart 16K, championship tennis 32K, wsml baseball 48K
2, 2, 4, 0, // up to 48K (16K/32K/48K)
3, 5, 5, 0, // tower of doom 48K
4, 2, 2, 1, // uscf chess 16K + RAM 1K
5, 3, 4, 0, // congo bongo/defender/pac-man 24K, dig dug 32K
6, 2, 2, 0, // centipede 16K
7, 2, 2, 0, // imagic carts 16K
8, 2, 2, 0, // mte-201 test cart 16K
9, 4, 4, 2, // triple challenge 32K + RAM 2K
};
byte intvmapcount = 10; // (sizeof(mapsize)/sizeof(mapsize[0])) / 4;
boolean intvmapfound = false;
byte intvmapselect;
int intvindex;
const byte INTV[] PROGMEM = { 8, 12, 16, 24, 32, 48 };
byte intvlo = 0; // Lowest Entry
byte intvhi = 5; // Highest Entry
byte intvmapper;
byte newintvmapper;
byte intvsize;
byte newintvsize;
// EEPROM MAPPING
// 07 MAPPER
// 08 ROM SIZE
//******************************************
// Menu
//******************************************
// Base Menu
static const char* const menuOptionsINTV[] PROGMEM = { FSTRING_SELECT_CART, FSTRING_READ_ROM, FSTRING_SET_SIZE, FSTRING_RESET };
void setup_INTV() {
// Request 5V
setVoltage(VOLTS_SET_5V);
// Set Address Pins to Output (UNUSED)
//A0-A7
DDRF = 0xFF;
//A8-A15
DDRK = 0xFF;
//A16-A23
DDRL = 0xFF;
// Set Control Pins to Output
// ---(PH0) ---(PH1) /MSYNC(PH3) BC1(PH4) BC2(PH5) BDIR(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 (DB0-DB15) to Input
DDRC = 0x00;
DDRA = 0x00;
// Setting Control Pins to HIGH
// ---(PH0) ---(PH1) /MSYNC(PH3) BC1(PH4) BC2(PH5) BDIR(PH6)
PORTH |= (1 << 0) | (1 << 1) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// Set Unused Pins HIGH
PORTF = 0xFF; // A0-A7
PORTK = 0xFF; // A8-A15
PORTL = 0xFF; // A16-A23
PORTJ |= (1 << 0); // TIME(PJ0)
checkStatus_INTV();
strcpy(romName, "INTV");
mode = CORE_INTV;
}
void intvMenu() {
convertPgm(menuOptionsINTV, 4);
uint8_t mainMenu = question_box(F("INTELLIVISION MENU"), menuOptions, 4, 0);
switch (mainMenu) {
case 0:
// Select Cart
setCart_INTV();
setup_INTV();
break;
case 1:
// Read ROM
sd.chdir("/");
readROM_INTV();
sd.chdir("/");
break;
case 2:
// Set Mapper
setMapper_INTV();
checkMapperSize_INTV();
setROMSize_INTV();
break;
case 3:
// reset
resetArduino();
break;
}
}
//******************************************
// INTELLIVISION BUS PROTOCOL COMMANDS
//******************************************
// CONTROL PINS - BDIR/BC1/BC2
// NO ACTION (NACT): 0/0/0
// ADDR TO REG (ADAR): 0/1/0 [NOTE: ORDER BDIR/BC1/BC2]
// DATA TO BUS (DTB): 0/1/1
// BUS TO ADDR (BAR): 1/0/0
// DATA WRITE (DW): 1/1/0 [NOTE: ORDER BDIR/BC1/BC2]
// DATA WRITE STROBE (DWS): 1/0/1 [NOTE: ORDER BDIR/BC1/BC2]
// IMMEDIATE MODE DATA READ SEQUENCE: BAR-NACT-DTB-NACT
// IMMEDIATE MODE DATA WRITE SEQUENCE: BAR-NACT-DW-DWS-NACT
// DIRECT ADDRESSING MODE READ SEQUENCE: BAR-NACT-ADAR-NACT-DTB-NACT
// NO ACTION (NACT) - 0/0/0
void NACT_INT() {
// Switch BC1(PH4) + BC2(PH5) + BDIR(PH6) to LOW
PORTH &= ~(1 << 4) & ~(1 << 5) & ~(1 << 6);
// DB0..DB15 INPUT
DDRC = 0x00;
DDRA = 0x00;
}
// SET ADDRESS - BUS TO ADDR (BAR) - 1/0/0
void BAR_INT() {
// Switch BDIR(PH6) to HIGH
PORTH |= (1 << 6);
// Switch BC1(PH4) + BC2(PH5) to LOW
PORTH &= ~(1 << 4) & ~(1 << 5);
// Address OUT
DDRC = 0xFF;
DDRA = 0xFF;
}
// READ DATA - DATA TO BUS (DTB) - 0/1/1
void DTB_INT() {
// Switch BDIR(PH6) to LOW
PORTH &= ~(1 << 6);
// Switch BC1(PH4) + BC2(PH5) to HIGH
PORTH |= (1 << 4) | (1 << 5);
// Data IN
DDRC = 0x00;
DDRA = 0x00;
}
// ADDRESS DATA TO ADDRESS REGISTER (ADAR) - 0/1/0
void ADAR_INT() {
// Switch BC2(PH5) + BDIR(PH6) to LOW
PORTH &= ~(1 << 5) & ~(1 << 6);
// Switch BC1(PH4) to HIGH
PORTH |= (1 << 4);
}
// DATA WRITE PAIRED COMMAND - DW + DWS
// DATA SHOULD BE STABLE ACROSS BOTH
// DATA WRITE (DW) - 1/1/0
void DW_INT() {
// Switch BC1(PH4) + BDIR(PH6) to HIGH
PORTH |= (1 << 4) | (1 << 6);
// Switch BC2(PH5) to LOW
PORTH &= ~(1 << 5);
}
// DATA WRITE STROBE (DWS) - 1/0/1
void DWS_INT() {
// Switch BC2(PH5) + BDIR(PH6) to HIGH
PORTH |= (1 << 5) | (1 << 6);
// Switch BC1(PH4) to LOW
PORTH &= ~(1 << 4);
}
//******************************************
// READ CODE
//******************************************
uint16_t readData_INTV(uint32_t addr) {
PORTC = addr & 0xFF;
PORTA = (addr >> 8) & 0xFF;
BAR_INT();
// Wait for bus
// 5 x 62.5ns = 312.5ns
NOP;
NOP;
NOP;
NOP;
NOP;
NACT_INT();
NOP;
NOP;
NOP;
NOP;
NOP;
DTB_INT();
NOP;
NOP;
NOP;
NOP;
NOP;
uint16_t ret = (((PINA & 0xFF) << 8) | (PINC & 0xFF));
NACT_INT();
NOP;
NOP;
NOP;
NOP;
NOP;
return ret;
}
// MAPPER ROM ADDRESSES
// 0: 0x50-0x70,0xD0-0xE0,0xF0-0x100, // default mattel up to 32K (8K/16K/24K/32K)
// 1: 0x50-0x70,0xD0-0x100, // demo cart 16K, championship tennis 32K, wsml baseball 48K
// 2: 0x50-0x70,0x90-0xC0,0xD0-0xE0, // up to 48K (16K/32K/48K)
// 3: 0x50-0x70,0x90-0xB0,0xD0-0xE0,0xF0-0x100, // tower of doom 48K
// 4: 0x50-0x70, // uscf chess 16K + RAM 1K
// 5: 0x50-0x80,0x90-0xC0, // congo bongo/defender/pac-man 24K, dig dug 32K
// 6: 0x60-0x80, // centipede 16K
// 7: 0x48-0x68, // imagic carts 16K
// 8: 0x50-0x60,0x70-0x80, // mte-201 test cart 16K
// 9: 0x50-0x70,0x90-0xB0,[0xC0-0xC8,0xD0-0xD8] // triple challenge 32K + RAM 2K [0xC0 + 0xD0 segments are not needed]
void readSegment_INTV(uint32_t startaddr, uint32_t endaddr) {
for (uint32_t addr = startaddr; addr < endaddr; addr += 256) {
for (uint16_t w = 0; w < 256; w++) {
uint16_t temp = readData_INTV(addr + w);
sdBuffer[w * 2] = (temp >> 8) & 0xFF;
sdBuffer[(w * 2) + 1] = temp & 0xFF;
}
myFile.write(sdBuffer, 512);
}
}
// MODIFIED READ ROUTINE FOR ALL 10 MAPPERS
void readROM_INTV() {
strcpy(fileName, romName);
strcat(fileName, ".int");
// create a new folder for storing rom file
EEPROM_readAnything(0, foldern);
sprintf(folder, "INTV/ROM/%d", foldern);
sd.mkdir(folder, true);
sd.chdir(folder);
display_Clear();
print_STR(saving_to_STR, 0);
print_Msg(folder);
println_Msg(F("/..."));
display_Update();
// open file on sdcard
if (!myFile.open(fileName, O_RDWR | O_CREAT))
print_FatalError(create_file_STR);
// write new folder number back to EEPROM
foldern++;
EEPROM_writeAnything(0, foldern);
switch (intvmapper) {
case 0: //default mattel up to 32K (8K/12K/16K/24K/32K)
readSegment_INTV(0x5000, 0x6000); // 8K
if (intvsize > 0) {
readSegment_INTV(0x6000, 0x6800); // +4K = 12K
if (intvsize > 1) {
readSegment_INTV(0x6800, 0x7000); // +4K = 16K
if (intvsize > 2) {
readSegment_INTV(0xD000, 0xE000); // +8K = 24K
if (intvsize > 3)
readSegment_INTV(0xF000, 0x10000); // +8K = 32K
}
}
}
break;
case 1: // demo cart/championship tennis/wsml baseball
readSegment_INTV(0x5000, 0x7000); // 16K Demo Cart
if (intvsize > 2) {
readSegment_INTV(0xD000, 0xE000); // +8K = 24K [NONE]
if (intvsize > 3) {
readSegment_INTV(0xE000, 0xF000); // +8K = 32K Championship Tennis
if (intvsize > 4) {
readSegment_INTV(0xF000, 0x10000); // +8K = 40K WSML Baseball [MISSING 8K ECS BANK]
// ecs bank switch
ecsBank(0xFFFF, 0x1); // switch ecs page 1 to 0xF000
readSegment_INTV(0xF000, 0x10000); // + 8K = 48K WSML Baseball
ecsBank(0xFFFF, 0x0); // reset ecs page 0 to 0xF000
}
}
}
break;
case 2: // up to 48K (16K/32K/48K)
readSegment_INTV(0x5000, 0x7000); // 16K
if (intvsize > 2) {
readSegment_INTV(0x9000, 0xA000); // +8K = 24K [NONE]
if (intvsize > 3) {
readSegment_INTV(0xA000, 0xB000); // +8K = 32K
if (intvsize > 4) {
readSegment_INTV(0xB000, 0xC000); // +8K = 40K
readSegment_INTV(0xD000, 0xE000); // +8K = 48K
}
}
}
break;
case 3: // tower of doom 48K
readSegment_INTV(0x5000, 0x7000); // 16K
readSegment_INTV(0x9000, 0xB000); // +16K = 32K
readSegment_INTV(0xD000, 0xE000); // +8K = 40K
readSegment_INTV(0xF000, 0x10000); // +8K = 48K
break;
case 4: // chess 16K
PORTH &= ~(1 << 3); // /MSYNC to LOW
readSegment_INTV(0x5000, 0x6000); // 8K
PORTH |= (1 << 3); // /MSYNC to HIGH
readSegment_INTV(0x6000, 0x7000); // 8K
break;
case 5: // congo bongo/defender/pac-man/dig dug
readSegment_INTV(0x5000, 0x7000); // 16K
readSegment_INTV(0x7000, 0x8000); // +8K = 24K Congo Bongo/Defender/Pac-Man
if (intvsize > 3) {
readSegment_INTV(0x9000, 0xA000); // +8K = 32K Dig Dug
//readSegment_INTV(0xA000,0xC000); // +16K = 48K [UNUSED]
}
break;
case 6: // centipede 16K
readSegment_INTV(0x6000, 0x8000); // 16K
break;
case 7: // imagic carts 16K
readSegment_INTV(0x4800, 0x6800); // 16K
break;
case 8: //mte-201 test cart 16K
readSegment_INTV(0x5000, 0x6000); // 8K
readSegment_INTV(0x7000, 0x8000); // +8K = 16K
break;
case 9: // triple challenge 32K [KNOWN ROM 44K BAD!]
readSegment_INTV(0x5000, 0x7000); // 16K
readSegment_INTV(0x9000, 0xB000); // +16K = 32K
// 0xC000 + 0xD000 SEGMENTS ARE NOT NEEDED (PER INTVNUT POST)
// readSegment_INTV(0xC000,0xC800); // +4K = 36K
// readSegment_INTV(0xD000,0xE000); // +8K = 44K
break;
}
myFile.close();
// Compare CRC32 to database and rename ROM if found
compareCRC("intv.txt", 0, 1, 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();
}
// ECS BANKSWITCH FOR WSML BASEBALL
// write $xA5y to $xFFF
// x = rom location ($x000 - $xFFF)
// y = page (up to 16 - WSML Baseball only uses 0/1)
void ecsBank(uint32_t addr, uint8_t bank) {
uint16_t ecsdata = (addr & 0xF000) + 0x0A50 + bank; // $xA5y
// Data OUT
DDRA = 0xFF;
DDRC = 0xFF;
// Set Address
PORTA = (addr >> 8) & 0xFF;
PORTC = addr & 0xFF;
BAR_INT();
NOP;
NOP;
NOP;
NOP;
NOP;
NACT_INT();
NOP;
// Data OUT
DDRA = 0xFF;
DDRC = 0xFF;
PORTA = (ecsdata >> 8) & 0xFF; // $xA
PORTC = ecsdata & 0xFF; // $5y
DW_INT();
NOP;
NOP;
NOP;
NOP;
NOP;
DWS_INT();
NOP;
NOP;
NOP;
NOP;
NOP;
NACT_INT();
NOP;
NOP;
NOP;
NOP;
NOP;
}
//******************************************
// MAPPER CODE
//******************************************
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
void displayMapperSelect_INTV(int index, boolean printInstructions) {
display_Clear();
print_Msg(F("Mapper: "));
intvindex = index * 4;
intvmapselect = pgm_read_byte(intvmapsize + intvindex);
println_Msg(intvmapselect);
if(printInstructions) {
println_Msg(FS(FSTRING_EMPTY));
#if defined(ENABLE_OLED)
print_STR(press_to_change_STR, 1);
print_STR(right_to_select_STR, 1);
#elif defined(ENABLE_LCD)
print_STR(rotate_to_change_STR, 1);
print_STR(press_to_select_STR, 1);
#endif
}
display_Update();
}
#endif
void setMapper_INTV() {
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
uint8_t b = 0;
int i = 0;
// Check Button Status
#if defined(ENABLE_OLED)
buttonVal1 = (PIND & (1 << 7)); // PD7
#elif defined(ENABLE_LCD)
boolean buttonVal1 = (PING & (1 << 2)); // PG2
#endif
if (buttonVal1 == LOW) { // Button Pressed
while (1) { // Scroll Mapper List
#if defined(ENABLE_OLED)
buttonVal1 = (PIND & (1 << 7)); // PD7
#elif defined(ENABLE_LCD)
boolean buttonVal1 = (PING & (1 << 2)); // PG2
#endif
if (buttonVal1 == HIGH) { // Button Released
// Correct Overshoot
if (i == 0)
i = intvmapcount - 1;
else
i--;
break;
}
displayMapperSelect_INTV(i, false);
if (i == (intvmapcount - 1))
i = 0;
else
i++;
delay(250);
}
}
displayMapperSelect_INTV(i, true);
while (1) {
b = checkButton();
if (b == 2) { // Previous Mapper (doubleclick)
if (i == 0)
i = intvmapcount - 1;
else
i--;
// Only update display after input because of slow LCD library
displayMapperSelect_INTV(i, true);
}
if (b == 1) { // Next Mapper (press)
if (i == (intvmapcount - 1))
i = 0;
else
i++;
// Only update display after input because of slow LCD library
displayMapperSelect_INTV(i, true);
}
if (b == 3) { // Long Press - Execute (hold)
newintvmapper = intvmapselect;
break;
}
}
display.setCursor(0, 56);
print_Msg(F("MAPPER "));
print_Msg(newintvmapper);
println_Msg(F(" SELECTED"));
display_Update();
delay(1000);
#else
setmapper:
String newmap;
intvmapfound = false;
Serial.print(F("Enter Mapper [0-9]: "));
while (Serial.available() == 0) {}
newmap = Serial.readStringUntil('\n');
Serial.println(newmap);
newintvmapper = newmap.toInt();
for (int i = 0; i < intvmapcount; i++) {
intvindex = i * 4;
intvmapselect = pgm_read_byte(intvmapsize + intvindex);
if (newintvmapper == intvmapselect)
intvmapfound = true;
}
if (intvmapfound == false) {
Serial.println(F("MAPPER NOT SUPPORTED!"));
Serial.println(FS(FSTRING_EMPTY));
newintvmapper = 0;
goto setmapper;
}
#endif
EEPROM_writeAnything(7, newintvmapper);
intvmapper = newintvmapper;
}
void checkMapperSize_INTV() {
for (int i = 0; i < intvmapcount; i++) {
intvindex = i * 4;
byte mapcheck = pgm_read_byte(intvmapsize + intvindex);
if (mapcheck == intvmapper) {
intvlo = pgm_read_byte(intvmapsize + intvindex + 1);
intvhi = pgm_read_byte(intvmapsize + intvindex + 2);
break;
}
}
}
void setROMSize_INTV() {
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
display_Clear();
if (intvlo == intvhi)
newintvsize = intvlo;
else {
uint8_t b = 0;
int i = intvlo;
// Only update display after input because of slow LCD library
display_Clear();
print_Msg(F("ROM Size: "));
println_Msg(pgm_read_byte(&(INTV[i])));
println_Msg(FS(FSTRING_EMPTY));
#if defined(ENABLE_OLED)
print_STR(press_to_change_STR, 1);
print_STR(right_to_select_STR, 1);
#elif defined(ENABLE_LCD)
print_STR(rotate_to_change_STR, 1);
print_STR(press_to_select_STR, 1);
#endif
display_Update();
while (1) {
b = checkButton();
if (b == 2) { // Previous (doubleclick)
if (i == intvlo)
i = intvhi;
else
i--;
// Only update display after input because of slow LCD library
display_Clear();
print_Msg(F("ROM Size: "));
println_Msg(pgm_read_byte(&(INTV[i])));
println_Msg(FS(FSTRING_EMPTY));
#if defined(ENABLE_OLED)
print_STR(press_to_change_STR, 1);
print_STR(right_to_select_STR, 1);
#elif defined(ENABLE_LCD)
print_STR(rotate_to_change_STR, 1);
print_STR(press_to_select_STR, 1);
#endif
display_Update();
}
if (b == 1) { // Next (press)
if (i == intvhi)
i = intvlo;
else
i++;
display_Clear();
print_Msg(F("ROM Size: "));
println_Msg(pgm_read_byte(&(INTV[i])));
println_Msg(FS(FSTRING_EMPTY));
#if defined(ENABLE_OLED)
print_STR(press_to_change_STR, 1);
print_STR(right_to_select_STR, 1);
#elif defined(ENABLE_LCD)
print_STR(rotate_to_change_STR, 1);
print_STR(press_to_select_STR, 1);
#endif
display_Update();
}
if (b == 3) { // Long Press - Execute (hold)
newintvsize = i;
break;
}
}
display.setCursor(0, 56); // Display selection at bottom
}
print_Msg(F("ROM SIZE "));
print_Msg(pgm_read_byte(&(INTV[newintvsize])));
println_Msg(F("K"));
display_Update();
delay(1000);
#else
if (intvlo == intvhi)
newintvsize = intvlo;
else {
setrom:
String sizeROM;
for (int i = 0; i < (intvhi - intvlo + 1); i++) {
Serial.print(F("Select ROM Size: "));
Serial.print(i);
Serial.print(F(" = "));
Serial.print(pgm_read_byte(&(INTV[i + intvlo])));
Serial.println(F("K"));
}
Serial.print(F("Enter ROM Size: "));
while (Serial.available() == 0) {}
sizeROM = Serial.readStringUntil('\n');
Serial.println(sizeROM);
newintvsize = sizeROM.toInt() + intvlo;
if (newintvsize > intvhi) {
Serial.println(F("SIZE NOT SUPPORTED"));
Serial.println(FS(FSTRING_EMPTY));
goto setrom;
}
}
Serial.print(F("ROM Size = "));
Serial.print(pgm_read_byte(&(INTV[newintvsize])));
Serial.println(F("K"));
#endif
EEPROM_writeAnything(8, newintvsize);
intvsize = newintvsize;
}
void checkStatus_INTV() {
EEPROM_readAnything(7, intvmapper);
EEPROM_readAnything(8, intvsize);
if (intvmapper > 9) {
intvmapper = 0;
EEPROM_writeAnything(7, intvmapper);
}
if (intvsize > 5) {
intvsize = 0;
EEPROM_writeAnything(8, intvsize);
}
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
display_Clear();
println_Msg(F("INTELLIVISION READER"));
println_Msg(FS(FSTRING_CURRENT_SETTINGS));
println_Msg(FS(FSTRING_EMPTY));
print_Msg(F("MAPPER: "));
println_Msg(intvmapper);
print_Msg(F("ROM SIZE: "));
print_Msg(pgm_read_byte(&(INTV[intvsize])));
println_Msg(F("K"));
display_Update();
wait();
#else
Serial.print(F("CURRENT MAPPER: "));
Serial.println(intvmapper);
Serial.print(F("CURRENT ROM SIZE: "));
Serial.print(pgm_read_byte(&(INTV[intvsize])));
Serial.println(F("K"));
Serial.println(FS(FSTRING_EMPTY));
#endif
}
//******************************************
// CART SELECT CODE
//******************************************
struct database_entry_INTV {
char crc_search[9];
byte gameMapper;
byte gameSize;
};
void readDataLine_INTV(FsFile& database, struct database_entry_INTV* entry) {
// Read CRC32 checksum
for (byte i = 0; i < 8; i++) {
checksumStr[i] = char(database.read());
}
// Skip over semicolon
database.seekCur(1);
// Read CRC32 of first 512 bytes
for (byte i = 0; i < 8; i++) {
entry->crc_search[i] = char(database.read());
}
// Skip over semicolon
database.seekCur(1);
// Read mapper
entry->gameMapper = database.read() - 48;
// Skip over semicolon
database.seekCur(1);
// Read rom size
// Read the next ascii character and subtract 48 to convert to decimal
entry->gameSize = ((database.read() - 48) * 10) + (database.read() - 48);
// Skip over semicolon
database.seekCur(1);
// Read SRAM size
byte sramSize __attribute__((unused)) = database.read() - 48;
// Skip rest of line
database.seekCur(2);
}
void printDataLine_INTV(struct database_entry_INTV* entry) {
print_Msg(F("Size: "));
print_Msg(entry->gameSize);
println_Msg(F("KB"));
print_Msg(F("Mapper: "));
println_Msg(entry->gameMapper);
}
void setCart_INTV() {
//go to root
sd.chdir();
struct database_entry_INTV entry;
// Select starting letter
byte myLetter = starting_letter();
// Open database
if (myFile.open("intv.txt", O_READ)) {
seek_first_letter_in_database(myFile, myLetter);
if(checkCartSelection(myFile, &readDataLine_INTV, &entry, &printDataLine_INTV)) {
//byte INTV[] = {8, 12, 16, 24, 32, 48};
switch (entry.gameSize) {
case 8:
intvsize = 0;
break;
case 12:
intvsize = 1;
break;
case 16:
intvsize = 2;
break;
case 24:
intvsize = 3;
break;
case 32:
intvsize = 4;
break;
case 48:
intvsize = 5;
break;
default:
intvsize = 0;
break;
}
EEPROM_writeAnything(7, entry.gameMapper);
EEPROM_writeAnything(8, intvsize);
}
} else {
print_FatalError(F("Database file not found"));
}
}
#endif
//******************************************
// End of File
//******************************************
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