cartreader/Cart_Reader/COLV.ino

405 lines
9.8 KiB
C++

//******************************************
// COLECOVISION MODULE
//******************************************
#ifdef ENABLE_COLV
// Coleco Colecovision
// Cartridge Pinout
// 30P 2.54mm pitch connector
//
// FRONT SIDE BACK SIDE
// (EVEN) (ODD)
// +-------+
// /C000 -| 2 1 |- D2
// D3 -| 4 3 |- D1
// D4 -| 6 5 |- D0
// D5 -| 8 7 |- A0
// D6 -| 10 9 |- A1
// D7 -| 12 11 |- A2
// A11 -| 14 13 |- GND (SHLD)
// A10 -| 16 15 |- A3
// /8000 -| 18 17 |- A4
// A14 -| 20 19 |- A13
// /A000 -| 22 21 |- A5
// A12 -| 24 23 |- A6
// A9 -| 26 25 |- A7
// A8 -| 28 27 |- /E000
// VCC(+5V) -| 30 29 |- GND
// +-------+
// CONTROL PINS:
// CHIP SELECT PINS
// /8000(PH3) - CHIP 0 - SNES /CS
// /A000(PH4) - CHIP 1 - SNES /IRQ
// /C000(PH5) - CHIP 2 - SNES /WR
// /E000(PH6) - CHIP 3 - SNES /RD
const byte COL[] PROGMEM = { 8, 12, 16, 20, 24, 32 };
byte collo = 0; // Lowest Entry
byte colhi = 5; // Highest Entry
byte colsize;
// EEPROM MAPPING
// 08 ROM SIZE
//******************************************
// Menu
//******************************************
// Base Menu
static const char* const menuOptionsCOL[] PROGMEM = { FSTRING_SELECT_CART, FSTRING_READ_ROM, FSTRING_SET_SIZE, FSTRING_RESET };
void setup_COL() {
// Request 5V
setVoltage(VOLTS_SET_5V);
// Set Address Pins to Output
// Colecovision uses A0-A14 [A15-A23 UNUSED]
//A0-A7
DDRF = 0xFF;
//A8-A15
DDRK = 0xFF;
//A16-A23
DDRL = 0xFF;
// Set Control Pins to Output
// ---(PH0) ---(PH1) /8000(PH3) /A000(PH4) /C000(PH5) /E000(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) ---(PH1) /8000(PH3) /A000(PH4) /C000(PH5) /E000(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)
checkStatus_COL();
strcpy(romName, "COLECO");
mode = CORE_COL;
}
void colMenu() {
convertPgm(menuOptionsCOL, 4);
uint8_t mainMenu = question_box(F("COLECOVISION MENU"), menuOptions, 4, 0);
switch (mainMenu) {
case 0:
// Select Cart
setCart_COL();
setup_COL();
break;
case 1:
// Read ROM
sd.chdir("/");
readROM_COL();
sd.chdir("/");
break;
case 2:
// Set Size
setROMSize_COL();
break;
case 3:
// reset
resetArduino();
break;
}
}
//******************************************
// READ CODE
//******************************************
// CHIP SELECT CONTROL PINS
// /8000(PH3) - CHIP 0
// /A000(PH4) - CHIP 1
// /C000(PH5) - CHIP 2
// /E000(PH6) - CHIP 3
uint8_t readData_COL(uint32_t addr) {
// SELECT ROM CHIP - PULL /CE LOW
uint8_t chipdecode = ((addr >> 13) & 0x3);
if (chipdecode == 3) // CHIP 3
PORTH &= ~(1 << 6); // /E000 LOW (ENABLE)
else if (chipdecode == 2) // CHIP 2
PORTH &= ~(1 << 5); // /C000 LOW (ENABLE)
else if (chipdecode == 1) // CHIP 1
PORTH &= ~(1 << 4); // /A000 LOW (ENABLE)
else // CHIP 0
PORTH &= ~(1 << 3); // /8000 LOW (ENABLE)
PORTF = addr & 0xFF; // A0-A7
PORTK = (addr >> 8) & 0xFF; // A8-A15
// LATCH ADDRESS - PULL /CE HIGH
PORTH |= (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6); // ALL /CE HIGH (DISABLE)
uint8_t ret = PINC;
return ret;
}
void readSegment_COL(uint32_t startaddr, uint32_t endaddr) {
for (uint32_t addr = startaddr; addr < endaddr; addr += 512) {
for (int w = 0; w < 512; w++) {
uint8_t temp = readData_COL(addr + w);
sdBuffer[w] = temp;
}
myFile.write(sdBuffer, 512);
}
}
void readROM_COL() {
strcpy(fileName, romName);
strcat(fileName, ".col");
// create a new folder for storing rom file
EEPROM_readAnything(0, foldern);
// sprintf(folder, "COL/ROM/%s/%d", romName, foldern);
sprintf(folder, "COL/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);
// RESET ALL CS PINS HIGH (DISABLE)
PORTH |= (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
readSegment_COL(0x8000, 0xA000); // 8K
if (colsize > 0) {
readSegment_COL(0xA000, 0xB000); // +4K = 12K
if (colsize > 1) {
readSegment_COL(0xB000, 0xC000); // +4K = 16K
if (colsize > 2) {
readSegment_COL(0xC000, 0xD000); // +4K = 20K
if (colsize > 3) {
readSegment_COL(0xD000, 0xE000); // +4K = 24K
if (colsize > 4) {
readSegment_COL(0xE000, 0x10000); // +8K = 32K
}
}
}
}
}
myFile.close();
// RESET ALL CS PINS HIGH (DISABLE)
PORTH |= (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// Compare CRC32 to database and rename ROM if found
compareCRC("colv.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();
}
//******************************************
// ROM SIZE
//******************************************
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
void printRomSize_COL(int index) {
display_Clear();
print_Msg(F("ROM Size: "));
println_Msg(pgm_read_byte(&(COL[index])));
}
#endif
void setROMSize_COL() {
byte newcolsize;
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
display_Clear();
if (collo == colhi)
newcolsize = collo;
else {
newcolsize = navigateMenu(collo, colhi, &printRomSize_COL);
display.setCursor(0, 56); // Display selection at bottom
}
print_Msg(F("ROM SIZE "));
print_Msg(pgm_read_byte(&(COL[newcolsize])));
println_Msg(F("K"));
display_Update();
delay(1000);
#else
if (collo == colhi)
newcolsize = collo;
else {
setrom:
String sizeROM;
for (int i = 0; i < (colhi - collo + 1); i++) {
Serial.print(F("Select ROM Size: "));
Serial.print(i);
Serial.print(F(" = "));
Serial.print(pgm_read_byte(&(COL[i + collo])));
Serial.println(F("K"));
}
Serial.print(F("Enter ROM Size: "));
while (Serial.available() == 0) {}
sizeROM = Serial.readStringUntil('\n');
Serial.println(sizeROM);
newcolsize = sizeROM.toInt() + collo;
if (newcolsize > colhi) {
Serial.println(F("SIZE NOT SUPPORTED"));
Serial.println(FS(FSTRING_EMPTY));
goto setrom;
}
}
Serial.print(F("ROM Size = "));
Serial.print(pgm_read_byte(&(COL[newcolsize])));
Serial.println(F("K"));
#endif
EEPROM_writeAnything(8, newcolsize);
colsize = newcolsize;
}
void checkStatus_COL() {
EEPROM_readAnything(8, colsize);
if (colsize > 5) {
colsize = 0;
EEPROM_writeAnything(8, colsize);
}
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
display_Clear();
println_Msg(F("COLECOVISION READER"));
println_Msg(FS(FSTRING_CURRENT_SETTINGS));
println_Msg(FS(FSTRING_EMPTY));
print_Msg(F("ROM SIZE: "));
print_Msg(pgm_read_byte(&(COL[colsize])));
println_Msg(F("K"));
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();
#else
Serial.print(F("CURRENT ROM SIZE: "));
Serial.print(pgm_read_byte(&(COL[colsize])));
Serial.println(F("K"));
Serial.println(FS(FSTRING_EMPTY));
#endif
}
//******************************************
// CART SELECT CODE
//******************************************
struct database_entry_COL {
char crc_search[9];
byte gameSize;
};
void readDataLine_COL(FsFile& database, struct database_entry_COL* 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 rom size
// Read the next ascii character and subtract 48 to convert to decimal
entry->gameSize = ((database.read() - 48) * 10) + (database.read() - 48);
// Skip rest of line
database.seekCur(2);
}
void printDataLine_COL(struct database_entry_COL* entry) {
print_Msg(F("Size: "));
print_Msg(entry->gameSize);
println_Msg(F("KB"));
}
void setCart_COL() {
//go to root
sd.chdir();
struct database_entry_COL entry;
// Select starting letter
byte myLetter = starting_letter();
// Open database
if (myFile.open("colv.txt", O_READ)) {
seek_first_letter_in_database(myFile, myLetter);
if(checkCartSelection(myFile, &readDataLine_COL, &entry, &printDataLine_COL)) {
//byte COL[] = {8, 12, 16, 20, 24, 32};
switch (entry.gameSize) {
case 8:
colsize = 0;
break;
case 12:
colsize = 1;
break;
case 16:
colsize = 2;
break;
case 20:
colsize = 3;
break;
case 24:
colsize = 4;
break;
case 32:
colsize = 5;
break;
default:
colsize = 0;
break;
}
EEPROM_writeAnything(8, colsize);
}
} else {
print_FatalError(FS(FSTRING_DATABASE_FILE_NOT_FOUND));
}
}
#endif
//******************************************
// End of File
//******************************************