Mirrors/cartreader
2
0
Fork 0
mirror of https://github.com/sanni/cartreader.git synced 2024-11-11 07:25:07 +01:00
Code Issues Projects Releases Wiki Activity

Add chip erase for unknown N64 repro

Browse Source
This commit is contained in:
sanni 2021-05-27 17:50:19 +02:00
parent e666f88640
commit 96ed5efbf4
1 changed files with 39 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
Cart_Reader/N64.ino
View File

@ -3013,6 +3013,8 @@ readn64rom:
N64 Repro Flashrom Functions
*****************************************/
void flashRepro_N64() {
unsigned long sectorSize;
byte bufferSize;
// Check flashrom ID's
idFlashrom_N64();
@ -3085,8 +3087,7 @@ void flashRepro_N64() {
sprintf(flashid, "%s", "CONF");
sprintf(cartID, "%s", "CONF");
unsigned long sectorSize;
byte bufferSize;
// Set cartsize manually
unsigned char N64RomMenu;
@ -3150,13 +3151,11 @@ void flashRepro_N64() {
case 2:
// 64 byte buffer
bufferSize = 64;
break;
case 3:
// 128 byte buffer
bufferSize = 128;
break;
}
@ -3218,7 +3217,7 @@ void flashRepro_N64() {
// Erase needed sectors
if (strcmp(flashid, "227E") == 0) {
// Spansion S29GL256N or Fujitsu MSP55LV512 with 0x20000 sector size and 32 byte buffer
eraseFlashrom_N64(0x20000);
eraseSector_N64(0x20000);
}
else if (strcmp(flashid, "7E7E") == 0) {
// Fujitsu MSP55LV100S
@ -3231,10 +3230,10 @@ void flashRepro_N64() {
}
else if ((strcmp(flashid, "22C9") == 0) || (strcmp(flashid, "22CB") == 0)) {
// Macronix MX29LV640, C9 is top boot and CB is bottom boot block
eraseFlashrom_N64(0x8000);
eraseSector_N64(0x8000);
}
else {
eraseFlashrom_N64(sectorSize);
eraseFlashrom_N64();
}
// Check if erase was successful
@ -3660,11 +3659,42 @@ void eraseMSP55LV100_N64() {
}
}
// Common chip erase command
void eraseFlashrom_N64() {
print_Msg(F("Chip erase..."));
display_Update();
// Send Erase Command
setAddress_N64(romBase + (0x555 << 1));
writeWord_N64(0xAA);
setAddress_N64(romBase + (0x2AA << 1));
writeWord_N64(0x55);
setAddress_N64(romBase + (0x555 << 1));
writeWord_N64(0x80);
setAddress_N64(romBase + (0x555 << 1));
writeWord_N64(0xAA);
setAddress_N64(romBase + (0x2AA << 1));
writeWord_N64(0x55);
setAddress_N64(romBase + (0x555 << 1));
writeWord_N64(0x10);
// Read the status register
setAddress_N64(romBase);
word statusReg = readWord_N64();
while ((statusReg | 0xFF7F) != 0xFFFF) {
setAddress_N64(romBase);
statusReg = readWord_N64();
// Blink led
PORTB ^= (1 << 4);
delay(500);
}
}
// Common sector erase command
void eraseFlashrom_N64(unsigned long sectorSize) {
void eraseSector_N64(unsigned long sectorSize) {
unsigned long flashBase = romBase;
print_Msg(F("Erasing..."));
print_Msg(F("Sector erase..."));
display_Update();
for (unsigned long currSector = 0; currSector < fileSize; currSector += sectorSize) {