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GB: Only trigger audio and not WR on flash cart with audio as WE, add…
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… 39SF cart without MBC
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@sanni
sanni committed Sep 15, 2024
1 parent a226a3c commit 6222b1f
Showing 1 changed file with 110 additions and 49 deletions.
159 changes: 110 additions & 49 deletions Cart_Reader/GB.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -42,8 +42,9 @@ static const char GBFlash29Item1[] PROGMEM = "DIY MBC3 (WR)";
static const char GBFlash29Item2[] PROGMEM = "DIY MBC5 (WR)";
static const char GBFlash29Item3[] PROGMEM = "HDR MBC30 (Audio)";
static const char GBFlash29Item4[] PROGMEM = "HDR GameBoy Cam";
static const char GBFlash29Item5[] PROGMEM = "39SF040 (Audio)";
static const char* const menuOptionsGBFlash29[] PROGMEM = { GBFlash29Item1, GBFlash29Item2, GBFlash29Item3, GBFlash29Item4, GBFlash29Item5, FSTRING_RESET };
static const char GBFlash29Item5[] PROGMEM = "Orange FM (WR)";
static const char GBFlash29Item6[] PROGMEM = "39SF MBC5 (Audio)";
static const char* const menuOptionsGBFlash29[] PROGMEM = { GBFlash29Item1, GBFlash29Item2, GBFlash29Item3, GBFlash29Item4, GBFlash29Item5, GBFlash29Item6, FSTRING_RESET };
#endif

// Pelican Codebreaker, Brainboy, and Monster Brain Operation Menu
Expand Down Expand Up @@ -130,11 +131,11 @@ void gbxMenu() {
switch (gbFlash) {
case 0:
//29F Menu
// create submenu with title and 5 options to choose from
// create submenu with title and 7 options to choose from
unsigned char gbFlash29;
// Copy menuOptions out of progmem
convertPgm(menuOptionsGBFlash29, 6);
gbFlash29 = question_box(F("Select MBC"), menuOptions, 6, 0);
convertPgm(menuOptionsGBFlash29, 7);
gbFlash29 = question_box(F("Select MBC"), menuOptions, 7, 0);

// wait for user choice to come back from the question box menu
switch (gbFlash29) {
Expand All @@ -147,7 +148,7 @@ void gbxMenu() {

// Change working dir to root
sd.chdir("/");
//MBC3
//MBC3, standard command set, with erase
writeFlash_GB(3, 0, 1);
feedbackPressAndReset();
break;
Expand All @@ -161,13 +162,13 @@ void gbxMenu() {

// Change working dir to root
sd.chdir("/");
//MBC5
//MBC5, standard command set, with erase
writeFlash_GB(5, 0, 1);
feedbackPressAndReset();
break;

case 2:
//Pulse Audio-In during writes
// Flash MBC3 with flash WE connected to audio pin
display_Clear();
display_Update();
setup_GB();
Expand All @@ -182,7 +183,7 @@ void gbxMenu() {

// Change working dir to root
sd.chdir("/");
//MBC5
//MBC3, standard command set, with erase
writeFlash_GB(3, 0, 1);
feedbackPressAndReset();
break;
Expand All @@ -197,7 +198,7 @@ void gbxMenu() {
//Flash first bank with erase
// Change working dir to root
sd.chdir("/");
//MBC3
//MBC3, standard command set, with erase
writeFlash_GB(3, 0, 1);
// Prints string out of the common strings array either with or without newline
print_STR(press_button_STR, 1);
Expand All @@ -219,7 +220,7 @@ void gbxMenu() {
// Flash second bank without erase
// Change working dir to root
sd.chdir("/");
//MBC3
//MBC3, standard command set, without erase
writeFlash_GB(3, 0, 0);

// Reset
Expand All @@ -228,6 +229,20 @@ void gbxMenu() {
break;

case 4:
//Flash 39SF010 cart without MBC
display_Clear();
display_Update();
setup_GB();
mode = CORE_GB;

// Change working dir to root
sd.chdir("/");
// No MBC, 39SF040 command set, with erase
writeFlash_GB(0, 1, 1);
feedbackPressAndReset();
break;

case 5:
//Flash MBC5 cart with 39SF040 and WE on Audio
display_Clear();
display_Update();
Expand All @@ -243,12 +258,12 @@ void gbxMenu() {

// Change working dir to root
sd.chdir("/");
//MBC5 with Audio and 39SF040 command set
//MBC5, 39SF040 command set, with erase
writeFlash_GB(5, 1, 1);
feedbackPressAndReset();
break;

case 5:
case 6:
resetArduino();
break;
}
Expand Down Expand Up @@ -779,6 +794,10 @@ byte readByte_GB(word myAddress) {
}

void writeByte_GB(int myAddress, byte myData) {
writeByte_GB(myAddress, myData, 0);
}

void writeByte_GB(int myAddress, byte myData, boolean audio_as_WE) {
// Set address
PORTF = myAddress & 0xFF;
PORTK = (myAddress >> 8) & 0xFF;
Expand All @@ -793,25 +812,25 @@ void writeByte_GB(int myAddress, byte myData) {
"nop\n\t"
"nop\n\t");

if (audioWE)
if (audio_as_WE)
// Pull Audio-In(PH4) low
PORTH &= ~(1 << 4);
//else
// Pull WR(PH5) low
PORTH &= ~(1 << 5);
else
// Pull WR(PH5) low
PORTH &= ~(1 << 5);

// Leave WR low for at least 60ns
__asm__("nop\n\t"
"nop\n\t"
"nop\n\t"
"nop\n\t");

if (audioWE)
if (audio_as_WE)
// Pull Audio-In(PH4) HIGH
PORTH |= (1 << 4);
//else
// Pull WR(PH5) HIGH
PORTH |= (1 << 5);
else
// Pull WR(PH5) HIGH
PORTH |= (1 << 5);

// Leave WR high for at least 50ns
__asm__("nop\n\t"
Expand Down Expand Up @@ -1846,14 +1865,14 @@ void sendMBC7EEPROM_Inst_GB(uint8_t op, uint8_t addr, uint16_t data) {
void sendFlashCommand_GB(byte cmd, boolean commandSet) {
if (commandSet == 0) {
//29F016/29F032/29F033
writeByte_GB(0x555, 0xaa);
writeByte_GB(0x2aa, 0x55);
writeByte_GB(0x555, cmd);
writeByte_GB(0x555, 0xaa, audioWE);
writeByte_GB(0x2aa, 0x55, audioWE);
writeByte_GB(0x555, cmd, audioWE);
} else if (commandSet == 1) {
//39SF040
writeByte_GB(0x5555, 0xaa);
writeByte_GB(0x2aaa, 0x55);
writeByte_GB(0x5555, cmd);
writeByte_GB(0x5555, 0xaa, audioWE);
writeByte_GB(0x2aaa, 0x55, audioWE);
writeByte_GB(0x5555, cmd, audioWE);
}
}

Expand Down Expand Up @@ -1907,11 +1926,13 @@ void writeFlash_GB(byte MBC, boolean commandSet, boolean flashErase) {
romBanks = int_pow(2, romSize + 1);
}

// Set ROM bank hi 0
writeByte_GB(0x3000, 0);
// Set ROM bank low 0
writeByte_GB(0x2000, 0);
delay(100);
if (MBC > 0) {
// Set ROM bank hi 0
writeByte_GB(0x3000, 0);
// Set ROM bank low 0
writeByte_GB(0x2000, 0);
delay(100);
}

// Reset flash
sendFlashCommand_GB(0xf0, commandSet);
Expand Down Expand Up @@ -2005,9 +2026,10 @@ void writeFlash_GB(byte MBC, boolean commandSet, boolean flashErase) {
// Blink led
blinkLED();

// Set ROM bank
writeByte_GB(0x2000, currBank);

if (MBC > 0) {
// Set ROM bank
writeByte_GB(0x2000, currBank);
}
for (unsigned int currAddr = 0x4000; currAddr < 0x7FFF; currAddr += 512) {
for (int currByte = 0; currByte < 512; currByte++) {
sdBuffer[currByte] = readByte_GB(currAddr + currByte);
Expand Down Expand Up @@ -2060,7 +2082,7 @@ void writeFlash_GB(byte MBC, boolean commandSet, boolean flashErase) {
// Write command sequence
sendFlashCommand_GB(0xa0, commandSet);
// Write current byte
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
writeByte_GB(currAddr + currByte, sdBuffer[currByte], audioWE);

// Set OE/RD(PH6) LOW
PORTH &= ~(1 << 6);
Expand Down Expand Up @@ -2107,7 +2129,7 @@ void writeFlash_GB(byte MBC, boolean commandSet, boolean flashErase) {
// Write command sequence
sendFlashCommand_GB(0xa0, commandSet);
// Write current byte
writeByte_GB(currAddr + currByte, sdBuffer[currByte]);
writeByte_GB(currAddr + currByte, sdBuffer[currByte], audioWE);

// Set OE/RD(PH6) LOW
PORTH &= ~(1 << 6);
Expand All @@ -2124,6 +2146,44 @@ void writeFlash_GB(byte MBC, boolean commandSet, boolean flashErase) {
}
}

else if (MBC == 0) {
if (fileSize > 0x7FFF)
print_FatalError(file_too_big_STR);
if (audioWE)
println_Msg(F("Writing flash (Audio)"));
else
println_Msg(F("Writing flash (WR)"));
display_Update();

// Write flash
//Initialize progress bar
uint32_t processedProgressBar = 0;
uint32_t totalProgressBar = (uint32_t)(romBanks)*16384;
draw_progressbar(0, totalProgressBar);

for (unsigned int currAddr = 0x4000; currAddr < fileSize; currAddr += 512) {
myFile.read(sdBuffer, 512);

for (int currByte = 0; currByte < 512; currByte++) {
// Write command sequence
sendFlashCommand_GB(0xa0, commandSet);
// Write current byte
writeByte_GB(currAddr + currByte, sdBuffer[currByte], audioWE);

// Set OE/RD(PH6) LOW
PORTH &= ~(1 << 6);

// Busy check
busyCheck_GB(currAddr + currByte, sdBuffer[currByte]);

// Switch OE/RD(PH6) to HIGH
PORTH |= (1 << 6);
}
processedProgressBar += 512;
draw_progressbar(processedProgressBar, totalProgressBar);
}
}

print_STR(verifying_STR, 0);
display_Update();

Expand All @@ -2137,20 +2197,21 @@ void writeFlash_GB(byte MBC, boolean commandSet, boolean flashErase) {

// Read number of banks and switch banks
for (word bank = 1; bank < romBanks; bank++) {
if (romType >= 5) { // MBC2 and above
writeByte_GB(0x2100, bank); // Set ROM bank
} else { // MBC1
writeByte_GB(0x6000, 0); // Set ROM Mode
writeByte_GB(0x4000, bank >> 5); // Set bits 5 & 6 (01100000) of ROM bank
writeByte_GB(0x2000, bank & 0x1F); // Set bits 0 & 4 (00011111) of ROM bank
}
if (MBC > 0) {
if (romType >= 5) { // MBC2 and above
writeByte_GB(0x2100, bank); // Set ROM bank
} else { // MBC1
writeByte_GB(0x6000, 0); // Set ROM Mode
writeByte_GB(0x4000, bank >> 5); // Set bits 5 & 6 (01100000) of ROM bank
writeByte_GB(0x2000, bank & 0x1F); // Set bits 0 & 4 (00011111) of ROM bank
}

if (bank > 1) {
romAddress = 0x4000;
if (bank > 1) {
romAddress = 0x4000;
}
// Blink led
blinkLED();
}
// Blink led
blinkLED();

// Read up to 7FFF per bank
while (romAddress <= 0x7FFF) {
// Fill sdBuffer
Expand Down

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