Update C64.ino

Fix Issue #902 Handling of GAME and EXROM lines of C64 cartridges is wrong.  Requires updated c64cart.txt on SD card.
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sakman55 2024-04-27 12:49:34 -10:00 committed by GitHub
parent a539f9b7de
commit 43e18fce80
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1 changed files with 28 additions and 222 deletions

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@ -57,10 +57,6 @@
//******************************************
#define PHI2_ENABLE PORTH |= (1 << 1)
#define PHI2_DISABLE PORTH &= ~(1 << 1)
#define GAME_DISABLE PORTH |= (1 << 3)
#define GAME_ENABLE PORTH &= ~(1 << 3)
#define EXROM_DISABLE PORTH |= (1 << 4)
#define EXROM_ENABLE PORTH &= ~(1 << 4)
#define ROML_DISABLE PORTL |= (1 << 0)
#define ROML_ENABLE PORTL &= ~(1 << 0)
#define ROMH_DISABLE PORTL |= (1 << 1)
@ -77,15 +73,15 @@
// Format = {c64mapper,c64lo,c64hi}
static const byte PROGMEM c64mapsize[] = {
0, 0, 3, // Normal 4K/8K/16K + Ultimax 8K/16K
1, 5, 5, // Action Replay 32K [UNTESTED]
2, 3, 3, // KCS Power Cartridge 16K [UNTESTED]
3, 6, 6, // Final Cartridge III 64K [UNTESTED]
4, 3, 3, // Simons Basic 16K [UNTESTED]
1, 5, 5, // Action Replay 32K [UNTESTED]
2, 3, 3, // KCS Power Cartridge 16K [UNTESTED]
3, 6, 6, // Final Cartridge III 64K [UNTESTED]
4, 3, 3, // Simons Basic 16K [UNTESTED]
5, 7, 9, // Ocean 128K/256K/512K
6, 2, 2, // Expert Cartridge 8K [UNTESTED]
7, 7, 7, // Fun Play, Power Play 128K [UNTESTED]
8, 6, 6, // Super Games 64K [UNTESTED]
9, 5, 5, // Atomic Power 32K [UNTESTED]
6, 2, 2, // Expert Cartridge 8K [UNTESTED]
7, 7, 7, // Fun Play, Power Play 128K [UNTESTED]
8, 6, 6, // Super Games 64K [UNTESTED]
9, 5, 5, // Atomic Power 32K [UNTESTED]
10, 2, 2, // Epyx Fastload 8K [UNTESTED]
11, 3, 3, // Westermann Learning 16K [UNTESTED]
12, 1, 1, // Rex Utility 8K [UNTESTED]
@ -114,12 +110,10 @@ byte c64size;
byte newc64size;
uint8_t c64banks;
byte c64port; // exrom+game
byte newc64port;
// EEPROM MAPPING
// 07 MAPPER
// 08 ROM SIZE
// 12 PORT STATE - EXROM/GAME
//******************************************
// MENU
@ -147,11 +141,10 @@ void c64Menu() {
break;
case 2:
// Set Mapper + Size + Ports
// Set Mapper + Size
setMapper_C64();
checkMapperSize_C64();
setROMSize_C64();
setPorts_C64();
break;
case 3:
@ -178,9 +171,13 @@ void setup_C64() {
DDRL = 0xFF;
// Set Control Pins to Output
// /RST(PH0) /GAME(PH3) /EXROM(PH4) ---(PH5) R/W(PH6)
DDRH |= (1 << 0) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// /RST(PH0) ---(PH5) R/W(PH6)
DDRH |= (1 << 0) | (1 << 5) | (1 << 6);
// Set Port Pins to Input
// /GAME(PH3) /EXROM(PH4)
DDRH &= ~((1 << 3) | (1 << 4));
// Set TIME(PJ0) to Output (UNUSED)
DDRJ |= (1 << 0);
@ -188,11 +185,8 @@ void setup_C64() {
DDRC = 0x00;
// Setting Control Pins to HIGH
// /RST(PH0) /GAME(PH3) /EXROM(PH4) ---(PH5) R/W(PH6)
PORTH |= (1 << 0) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6);
// Set /GAME(PH3) and /EXROM(PH4) to LOW
PORTH &= ~(1 << 3) & ~(1 << 4);
// /RST(PH0) ---(PH5) R/W(PH6)
PORTH |= (1 << 0) | (1 << 5) | (1 << 6);
// Set /ROML, /ROMH, /IO1, /IO2 to HIGH
PORTL = 0xFF; // A16-A23 (A16 = /ROML, A17 = /ROMH, A18 = /IO1, A19 = /IO2)
@ -245,9 +239,6 @@ uint8_t readData_C64(uint16_t addr) {
NOP;
NOP;
// Set /GAME(PH3) + /EXROM(PH4) to LOW
// PORTH &= ~(1 << 3) & ~(1 << 4);
// Set R/W(PH6) to HIGH
PORTH |= (1 << 6); // R/W HIGH (READ)
NOP;
@ -256,10 +247,6 @@ uint8_t readData_C64(uint16_t addr) {
uint8_t ret = PINC;
// Set /GAME(PH3) + /EXROM(PH4) to HIGH
// PORTH |= (1 << 3) | (1 << 4);
// NOP; NOP;
return ret;
}
@ -344,27 +331,10 @@ void bankSwitch_C64(uint16_t addr, uint8_t data) {
}
//******************************************
// PORT STATE
// READ PORT STATE
//******************************************
void enablePorts_C64() {
if (c64port == 0) { // 0 = 00 = EXROM LOW/GAME LOW
EXROM_ENABLE;
GAME_ENABLE;
} else if (c64port == 1) { // 1 = 01 = EXROM LOW/GAME HIGH
EXROM_ENABLE;
GAME_DISABLE;
} else if (c64port == 2) { // 2 = 10 = EXROM HIGH/GAME LOW
EXROM_DISABLE;
GAME_ENABLE;
} else { // c64port == 3 = 11 = EXROM HIGH/GAME HIGH
EXROM_DISABLE;
GAME_DISABLE;
}
}
void disablePorts_C64() { // EXROM HIGH/GAME HIGH
EXROM_DISABLE;
GAME_DISABLE;
void readPorts_C64() {
c64port = (PINH >> 3) & 0x3;
}
//******************************************
@ -402,10 +372,9 @@ void readROM_C64() {
switch (c64mapper) {
case 0: // Normal (4K/8K/16K) & Ultimax (8K/16K)
readPorts_C64();
// ULTIMAX CARTS
if (c64port == 2) { // 2 = 10 = EXROM HIGH/GAME LOW
GAME_ENABLE; // LOW
EXROM_DISABLE; // HIGH
if (c64size > 1) { // 16K [NO ROML FOR 8K]
ROML_ENABLE;
readSegment_C64(0x8000, 0xA000); // 8K
@ -415,7 +384,6 @@ void readROM_C64() {
readSegment_C64(0xE000, 0x10000); // +8K = 8K/16K
ROMH_DISABLE;
} else { // NORMAL CARTS
enablePorts_C64(); // MOST CARTS EXROM LOW/GAME LOW BUT VARIATIONS EXIST
ROML_ENABLE;
readSegment_C64(0x8000, 0x9000); // 4K
if (c64size > 0)
@ -427,37 +395,28 @@ void readROM_C64() {
ROMH_DISABLE;
}
}
disablePorts_C64();
break;
case 1: // Action Replay (32K)
GAME_DISABLE; // HIGH
EXROM_ENABLE; // LOW
ROML_ENABLE;
for (int x = 0; x < 4; x++) {
bankSwitch_C64(0xDE00, x << 3); // Switch Bank using D3-D4
readSegment_C64(0x8000, 0xA000); // 8K *4 = 32K
}
ROML_DISABLE;
disablePorts_C64();
break;
case 2: // KCS Power Cartridge (16K)
case 11: // Westermann Learning (16K)
GAME_ENABLE; // LOW
EXROM_ENABLE; // LOW
ROML_ENABLE;
readSegment_C64(0x8000, 0xA000); // 8K
ROML_DISABLE;
ROMH_ENABLE;
readSegment_C64(0xA000, 0xC000); // +8K = 16K
ROMH_DISABLE;
disablePorts_C64();
break;
case 3: // Final Cartridge III (64K)
GAME_DISABLE; // HIGH
EXROM_DISABLE; // HIGH
for (int x = 0; x < 4; x++) {
bankSwitch_C64(0xDFFF, 0x40 + x); // Switch Bank using $DFFF
ROML_ENABLE;
@ -470,8 +429,6 @@ void readROM_C64() {
break;
case 4: // Simons Basic (16K)
GAME_DISABLE; // HIGH
EXROM_ENABLE; // LOW
ROML_ENABLE;
readSegment_C64(0x8000, 0xA000); // 8K
ROML_DISABLE;
@ -479,7 +436,6 @@ void readROM_C64() {
bankSwitch_C64(0xDE00, 0x1); // Switch Bank to ROM
readSegment_C64(0xA000, 0xC000); // +8K = 16K
ROMH_DISABLE;
disablePorts_C64();
break;
// Ocean Bank 1/B (Single Chip) Selection Notes (Luigi Di Fraia):
@ -498,8 +454,6 @@ void readROM_C64() {
// IF 0x75 OR 0x83, THEN Two Chip ELSE Single Chip
case 5: { // Ocean 128K/256K/512K
GAME_ENABLE; // LOW
EXROM_ENABLE; // LOW
ROML_ENABLE;
bankSwitch_C64(0xDE00, 0); // Reset Bank 0
uint8_t checkOcean = readData_C64(0x8002);
@ -531,20 +485,15 @@ void readROM_C64() {
}
ROML_DISABLE;
}
disablePorts_C64();
break;
}
case 6: // Expert Cartridge (8K)
GAME_DISABLE; // HIGH
EXROM_DISABLE; // HIGH
ROML_ENABLE;
readSegment_C64(0x8000, 0xA000); // 8K
ROML_DISABLE;
break;
case 7: // Fun Play, Power Play (128K)
GAME_ENABLE; // LOW
EXROM_ENABLE; // LOW
ROML_ENABLE;
for (int x = 0; x < 8; x++) {
bankSwitch_C64(0xDE00, x * 8); // Switch Bank 0-8
@ -558,12 +507,9 @@ void readROM_C64() {
}
ROMH_DISABLE;
bankSwitch_C64(0xDE00, 0x86); // Reset ROM
disablePorts_C64();
break;
case 8: // Super Games (64K)
GAME_ENABLE; // LOW
EXROM_ENABLE; // LOW
for (int x = 0; x < 4; x++) {
bankSwitch_C64(0xDF00, x); // Switch Bank
ROML_ENABLE;
@ -573,24 +519,18 @@ void readROM_C64() {
readSegment_C64(0xA000, 0xC000); // +8K = 16K
ROMH_DISABLE;
}
disablePorts_C64();
break;
case 9: // Atomic Power (32K)
GAME_ENABLE; // LOW
EXROM_ENABLE; // LOW
ROML_ENABLE;
for (int x = 0; x < 4; x++) {
bankSwitch_C64(0xDE00, x << 3); // Switch Bank using D3-D4
readSegment_C64(0x8000, 0xA000); // 8K
}
ROML_DISABLE;
disablePorts_C64();
break;
case 10: // Epyx Fastload (8K)
GAME_DISABLE; // HIGH
EXROM_DISABLE; // HIGH
ROML_ENABLE;
bankSwitch_C64(0xDE00, 0); // Read IO1 - Trigger Access
readSegment_C64(0x8000, 0x9E00); // 7680 Bytes
@ -601,18 +541,13 @@ void readROM_C64() {
break;
case 12: // Rex Utility (8K)
GAME_DISABLE; // HIGH
EXROM_ENABLE; // LOW
ROML_ENABLE;
bankSwitch_C64(0xDFC0, 0); // Enable ROM
readSegment_C64(0x8000, 0xA000); // 8K
ROML_DISABLE;
disablePorts_C64();
break;
case 13: // Final Cartridge I (16K)
GAME_DISABLE; // HIGH
EXROM_DISABLE; // HIGH
bankSwitch_C64(0xDF00, 0); // Enable ROM
ROML_ENABLE;
readSegment_C64(0x8000, 0xA000); // 8K
@ -623,55 +558,42 @@ void readROM_C64() {
break;
case 14: // Magic Formel (64K)
GAME_ENABLE; // LOW
EXROM_ENABLE; // LOW
ROMH_ENABLE;
for (int x = 0; x < 8; x++) {
bankSwitch_C64(0xDF00 + x, 0); // Switch Bank using A0-A2
readSegment_C64(0xE000, 0x10000); // 8K * 8 = 64K
}
ROMH_DISABLE;
disablePorts_C64();
break;
case 15: // C64 Game System, System 3 (512K)
GAME_ENABLE; // LOW
EXROM_DISABLE; // HIGH
ROML_ENABLE;
for (int x = 0; x < 64; x++) {
bankSwitch_C64(0xDE00 + x, 0); // Switch Bank using A0-A4
readSegment_C64(0x8000, 0xA000); // 8K * 64 = 512K
}
disablePorts_C64();
ROML_DISABLE;
break;
case 16: // WarpSpeed (16K)
GAME_ENABLE; // LOW
EXROM_ENABLE; // LOW
ROML_ENABLE;
readSegment_C64(0x8000, 0xA000); // 8K
ROML_DISABLE;
ROMH_ENABLE;
readSegment_C64(0xA000, 0xC000); // +8K = 16K
ROMH_DISABLE;
disablePorts_C64();
break;
case 17: // Dinamic (128K) - Luigi Di Fraia has opposite PORT states - GAME_DISABLE/EXROM_ENABLE
GAME_ENABLE; // LOW
EXROM_DISABLE; // HIGH
case 17: // Dinamic (128K)
ROML_ENABLE;
for (int x = 0; x < 16; x++) {
bankSwitch_C64(0xDE00 + x, 0); // Switch Bank using A0-A4
readSegment_C64(0x8000, 0xA000); // 8K * 16 = 128K
}
ROML_DISABLE;
disablePorts_C64();
break;
case 18: // Zaxxon, Super Zaxxon (SEGA) (20K)
GAME_DISABLE; // HIGH
EXROM_DISABLE; // HIGH
ROML_ENABLE;
readSegment_C64(0x8000, 0x9000); // 4K
ROML_DISABLE;
@ -686,8 +608,6 @@ void readROM_C64() {
break;
case 19: // Magic Desk, Domark, HES Australia (32K/64K/128K)
GAME_ENABLE; // LOW
EXROM_DISABLE; // HIGH
ROML_ENABLE;
c64banks = C64[c64size] / 8;
for (int x = 0; x < c64banks; x++) {
@ -695,12 +615,9 @@ void readROM_C64() {
readSegment_C64(0x8000, 0xA000); // 8K * Banks = 32K/64K/128K
}
ROML_DISABLE;
disablePorts_C64();
break;
case 20: // Super Snapshot 5 (64K)
GAME_DISABLE;
EXROM_DISABLE;
for (int x = 0; x < 4; x++) {
int bank = (((x & 2) << 3) | (0 << 3) | ((x & 1) << 2));
bankSwitch_C64(0xDE00, bank); // Switch Bank using D2-D4 (D3 == 0 Enable ROM)
@ -714,8 +631,6 @@ void readROM_C64() {
break;
case 21: // Comal-80 (64K)
GAME_DISABLE;
EXROM_DISABLE;
for (int x = 0; x < 4; x++) {
bankSwitch_C64(0xDE00, x + 0x80); // Switch Bank
ROML_ENABLE;
@ -978,104 +893,12 @@ setrom:
c64size = newc64size;
}
//******************************************
// SET PORT STATE
//******************************************
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
void println_C64_PortState(int state)
{
display_Clear();
print_Msg(F("Port State: "));
println_Msg(state);
switch (state) {
case 0:
println_Msg(F("EXROM LOW/GAME LOW"));
break;
case 1:
println_Msg(F("EXROM LOW/GAME HIGH"));
break;
case 2:
println_Msg(F("EXROM HIGH/GAME LOW"));
break;
case 3:
println_Msg(F("EXROM HIGH/GAME HIGH"));
break;
}
println_Msg(FS(FSTRING_EMPTY));
println_Msg(F("Press to Change"));
println_Msg(F("Hold to Select"));
display_Update();
}
#endif
void setPorts_C64()
{
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
uint8_t b = 0;
int i = 0;
println_C64_PortState(i);
while (1) {
b = checkButton();
if (b == 2) { // Previous (doubleclick)
if (i == 0)
i = 3;
else
i--;
println_C64_PortState(i);
}
if (b == 1) { // Next (press)
if (i == 3)
i = 0;
else
i++;
println_C64_PortState(i);
}
if (b == 3) { // Long Press - Execute (hold)
newc64port = i;
break;
}
}
display.setCursor(0, 56); // Display selection at bottom
print_Msg(F("PORT STATE "));
println_Msg(newc64port);
display_Update();
delay(1000);
#else
setrom:
String sizeROM;
Serial.print(F("Select Port State [0-3]:"));
Serial.println(F("0 = EXROM LOW/GAME LOW"));
Serial.println(F("1 = EXROM LOW/GAME HIGH"));
Serial.println(F("2 = EXROM HIGH/GAME LOW"));
Serial.println(F("3 = EXROM HIGH/GAME HIGH"));
Serial.print(F("Enter Port State: "));
while (Serial.available() == 0) {}
sizeROM = Serial.readStringUntil('\n');
Serial.println(sizeROM);
newc64port = sizeROM.toInt();
if (newc64port > 3) {
Serial.println(F("INVALID STATE"));
Serial.println(FS(FSTRING_EMPTY));
goto setrom;
}
Serial.print(F("Port State = "));
Serial.println(newc64port);
#endif
EEPROM_writeAnything(12, newc64port);
c64port = newc64port;
}
//******************************************
// CHECK STATUS
//******************************************
void checkStatus_C64() {
EEPROM_readAnything(7, c64mapper);
EEPROM_readAnything(8, c64size);
EEPROM_readAnything(12, c64port);
if (c64mapper > 21) {
c64mapper = 0;
EEPROM_writeAnything(7, c64mapper);
@ -1084,10 +907,6 @@ void checkStatus_C64() {
c64size = 0;
EEPROM_writeAnything(8, c64size);
}
if (c64port > 3) {
c64port = 0;
EEPROM_writeAnything(12, c64port);
}
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
display_Clear();
@ -1100,8 +919,6 @@ void checkStatus_C64() {
print_Msg(F("ROM SIZE: "));
print_Msg(C64[c64size]);
println_Msg(F("K"));
print_Msg(F("PORT STATE: "));
println_Msg(c64port);
display_Update();
wait();
#else
@ -1110,8 +927,6 @@ void checkStatus_C64() {
Serial.print(F("CURRENT ROM SIZE: "));
Serial.print(C64[c64size]);
Serial.println(F("K"));
Serial.print(F("CURRENT PORT STATE: "));
Setial.println(c64port);
Serial.println(FS(FSTRING_EMPTY));
#endif
}
@ -1216,10 +1031,9 @@ void printMapper_C64(byte c64maplabel) {
// CART SELECT CODE
//******************************************
FsFile c64csvFile;
char c64game[47]; // title
char c64game[45]; // title
char c64mm[3]; // mapper
char c64rr[3]; // romsize
char c64pp[3]; // port state (exrom+game)
char c64ll[4]; // linelength (previous line)
unsigned long c64csvpos; // CSV File Position
char c64cartCSV[] = "c64cart.txt"; // CSV List
@ -1238,7 +1052,7 @@ bool readLine_C64(FsFile& f, char* line, size_t maxLen) {
return false; // line too long
}
bool readVals_C64(char* c64game, char* c64mm, char* c64rr, char* c64pp, char* c64ll) {
bool readVals_C64(char* c64game, char* c64mm, char* c64rr, char* c64ll) {
char line[54];
c64csvpos = c64csvFile.position();
if (!readLine_C64(c64csvFile, line, sizeof(line))) {
@ -1254,8 +1068,6 @@ bool readVals_C64(char* c64game, char* c64mm, char* c64rr, char* c64pp, char* c6
else if (x == 2)
strcpy(c64rr, comma);
else if (x == 3)
strcpy(c64pp, comma);
else if (x == 4)
strcpy(c64ll, comma);
comma = strtok(NULL, ",");
x += 1;
@ -1281,7 +1093,7 @@ bool getCartListInfo_C64() {
#endif
if (buttonVal1 == LOW) { // Button Held - Fast Cycle
while (1) { // Scroll Game List
while (readVals_C64(c64game, c64mm, c64rr, c64pp, c64ll)) {
while (readVals_C64(c64game, c64mm, c64rr, c64ll)) {
if (strcmp(c64csvEND, c64game) == 0) {
c64csvFile.seek(0); // Restart
} else {
@ -1331,7 +1143,7 @@ bool getCartListInfo_C64() {
Serial.println(F("HOLD TO SELECT"));
Serial.println(FS(FSTRING_EMPTY));
#endif
while (readVals_C64(c64game, c64mm, c64rr, c64pp, c64ll)) {
while (readVals_C64(c64game, c64mm, c64rr, c64ll)) {
if (strcmp(c64csvEND, c64game) == 0) {
c64csvFile.seek(0); // Restart
} else {
@ -1367,10 +1179,8 @@ bool getCartListInfo_C64() {
if (b == 3) { // Long Press - Select Cart (hold)
newc64mapper = strtol(c64mm, NULL, 10);
newc64size = strtol(c64rr, NULL, 10);
newc64port = strtol(c64pp, NULL, 10);
EEPROM_writeAnything(7, newc64mapper);
EEPROM_writeAnything(8, newc64size);
EEPROM_writeAnything(12, newc64port);
cartselected = 1; // SELECTION MADE
#if (defined(ENABLE_OLED) || defined(ENABLE_LCD))
println_Msg(F("SELECTION MADE"));
@ -1412,8 +1222,6 @@ void checkCSV_C64() {
print_Msg(newc64mapper);
print_Msg(F("/R"));
print_Msg(newc64size);
print_Msg(F("/P"));
print_Msg(newc64port);
display_Update();
#else
Serial.println(FS(FSTRING_EMPTY));
@ -1424,8 +1232,6 @@ void checkCSV_C64() {
Serial.print(newc64mapper);
Serial.print(F("/R"));
Serial.print(newc64size);
Serial.print(F("/P"));
Serial.print(newc64port);
Serial.println(FS(FSTRING_EMPTY));
#endif
} else {