Mirrors/cartreader
2
0
Fork 0
mirror of https://github.com/sanni/cartreader.git synced 2024-11-30 00:14:15 +01:00
Code Issues Projects Releases Wiki Activity

reuse code to write NES maker command

Browse Source
This commit is contained in:
smesgr9000 2024-05-30 08:15:22 +02:00
parent 5b43a162b8
commit 86059ae070
1 changed files with 9 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
Cart_Reader/NES.ino
View File

@ -4114,44 +4114,29 @@ void EepromWRITE(uint8_t address) {
/******************************************
NESmaker Flash Cart [SST 39SF40]
*****************************************/
void NESmaker_ResetFlash() { // Reset Flash
void NESmaker_Cmd(byte cmd) {
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xAA);
write_prg_byte(0xC000, 0x00);
write_prg_byte(0xAAAA, 0x55);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xFF); // Reset
write_prg_byte(0x9555, cmd);
}
// SST 39SF040 Software ID
void NESmaker_ID() { // Read Flash ID
NESmaker_ResetFlash();
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xAA);
write_prg_byte(0xC000, 0x00);
write_prg_byte(0xAAAA, 0x55);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0x90); // Software ID Entry
NESmaker_Cmd(0xFF); // Reset
NESmaker_Cmd(0x90); // Software ID Entry
flashid = read_prg_byte(0x8000) << 8;
flashid |= read_prg_byte(0x8001);
sprintf(flashid_str, "%04X", flashid);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xAA);
write_prg_byte(0xC000, 0x00);
write_prg_byte(0xAAAA, 0x55);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xF0); // Software ID Exit
NESmaker_Cmd(0xF0); // Software ID Exit
if (flashid == 0xBFB7) // SST 39SF040
flashfound = 1;
}
void NESmaker_SectorErase(uint8_t bank, word address) {
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xAA);
write_prg_byte(0xC000, 0x00);
write_prg_byte(0xAAAA, 0x55);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0x80);
NESmaker_Cmd(0x80);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xAA);
write_prg_byte(0xC000, 0x00);
@ -4161,30 +4146,15 @@ void NESmaker_SectorErase(uint8_t bank, word address) {
}
void NESmaker_ByteProgram(uint8_t bank, word address, uint8_t data) {
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xAA);
write_prg_byte(0xC000, 0x00);
write_prg_byte(0xAAAA, 0x55);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xA0);
NESmaker_Cmd(0xA0);
write_prg_byte(0xC000, bank); // $00-$1F
write_prg_byte(address, data); // $8000-$BFFF
}
// SST 39SF040 Chip Erase [NOT IMPLEMENTED]
void NESmaker_ChipErase() { // Typical 70ms
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xAA);
write_prg_byte(0xC000, 0x00);
write_prg_byte(0xAAAA, 0x55);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0x80);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0xAA);
write_prg_byte(0xC000, 0x00);
write_prg_byte(0xAAAA, 0x55);
write_prg_byte(0xC000, 0x01);
write_prg_byte(0x9555, 0x10); // Chip Erase
NESmaker_Cmd(0x80);
NESmaker_Cmd(0x10); // Chip Erase
}
void writeFLASH() {