Mirrors/cartreader
2
0
Fork 0
mirror of https://github.com/sanni/cartreader.git synced 2024-12-25 04:21:53 +01:00
Code Issues Projects Releases Wiki Activity

Merge pull request #639 from nsx0r/patch-38

Browse Source 
added NES mapper 176
This commit is contained in:
sanni 2022-11-24 23:08:45 +01:00 committed by GitHub
commit 1c383d45ca
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
Cart_Reader/NES.ino
View File

@ -105,6 +105,7 @@ static const byte PROGMEM mapsize[] = {
155, 3, 3, 3, 5, 0, 1, // mmc1 variant [sram r/w]
158, 3, 3, 5, 5, 0, 0, // tengen rambo-1 variant (alien syndrome (u)) [UNLICENSED]
159, 3, 4, 5, 6, 1, 1, // bandai x24c01 [eep r/w]
176, 4, 4, 5, 5, 0, 0, // 8025 enhanced MMC3 [UNLICENSED]
180, 3, 3, 0, 0, 0, 0, // unrom variant (crazy climber)
184, 1, 1, 2, 3, 0, 0, // sunsoft 1
185, 0, 1, 1, 1, 0, 0, // cnrom lockout
@ -3110,6 +3111,25 @@ void readPRG(boolean readrom) {
}
}
break;
case 176:
banks = int_pow(2, prgsize) * 2;
write_prg_byte(0x5FF3, 0); // extended MMC3 mode: disabled
write_prg_byte(0x5FF0, 1); // 256K outer bank mode
for (int i = 0; i < banks-3; i += 2) {
write_prg_byte(0x5FF1, (i & 0xE0) >> 1); // outer bank select
write_prg_byte(0x8000, 6);
write_prg_byte(0x8001, i);
write_prg_byte(0x8000, 7);
write_prg_byte(0x8001, i + 1);
for (word address = 0x0; address < 0x4000; address += 512) {
dumpPRG(base, address);
}
}
for (word address = 0x4000; address < 0x8000; address += 512) {
dumpPRG(base, address);
}
break;
case 200:
banks = int_pow(2, prgsize);
@ -3919,6 +3939,34 @@ void readCHR(boolean readrom) {
}
}
break;
case 176:
banks = int_pow(2, chrsize) * 4;
write_prg_byte(0x5FF3, 0); // extended MMC3 mode: disabled
write_prg_byte(0x5FF0, 1); // 256K outer bank mode
for (int i = 0; i < banks; i += 8) {
write_prg_byte(0x5FF2, (i & 0x700) >> 3); // outer 256k bank
write_prg_byte(0x8000, 0);
write_prg_byte(0x8001, i);
write_prg_byte(0x8000, 0x0A);
write_prg_byte(0x8001, i + 1);
write_prg_byte(0x8000, 1);
write_prg_byte(0x8001, i + 2);
write_prg_byte(0x8000, 0x0B);
write_prg_byte(0x8001, i + 3);
write_prg_byte(0x8000, 2);
write_prg_byte(0x8001, i + 4);
write_prg_byte(0x8000, 3);
write_prg_byte(0x8001, i + 5);
write_prg_byte(0x8000, 4);
write_prg_byte(0x8001, i + 6);
write_prg_byte(0x8000, 5);
write_prg_byte(0x8001, i + 7);
for (word address = 0x0; address < 0x2000; address += 512) {
dumpCHR(address);
}
}
break;
case 184: // 16K/32K
banks = int_pow(2, chrsize);