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Added support for insideGadgets Power Cart

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This commit is contained in:
Alex 2020-05-11 19:52:00 +10:00
parent 02e0b987ff
commit a4e527f4ef
1 changed files with 70 additions and 3 deletions
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73
script/gbnp.js
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@ -304,9 +304,27 @@ class Processor {
romFile.writeBytes(this.menu.data);
// apply iG power cart hack
if (this.cartType === 1) {
romFile.seek(0x130E);
romFile.writeBytes(IG_POWER_CART_HACK);
if (this.cartType == 1) {
romFile.seek(0x130E); // For CGB+
romFile.writeBytes([0xC3, 0x00, 0x1F]); // Jump to 0x1F00
romFile.seek(0x140F); // For DMG/Pocket
romFile.writeBytes([0xC3, 0x00, 0x1F]); // Jump to 0x1F00
// Set rom bank, ram enabled/disabled, 8KB/32KB locked and ram bank
romFile.seek(0x1F00);
romFile.writeBytes([0x3e, 0x01, 0xea, 0x00, 0x20, // Set 0x2000, 1
0xf0, 0xfd, 0x01, 0x00, 0x22, 0x4f, 0x0a, 0xea, 0x00, 0x40, 0x3e, 0x00, 0xea, 0x00, 0x40, // Ram bank set bit 1+. 8KB/32KB locking = bit 0
0xf0, 0xfd, 0x01, 0x00, 0x21, 0x4f, 0x0a, 0xea, 0x00, 0x00, // Ram enable/disable
0xf0, 0xfd, 0x01, 0x00, 0x20, 0x4f, 0x0a, 0xea, 0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]); // Rom bank and restart GB
// Patch out any writes to 0x0000-0x1000
romFile.seek(0x0DDF);
romFile.writeBytes([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]);
romFile.seek(0x0E22);
romFile.writeBytes([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]);
}
// apply cgb hack
@ -339,6 +357,10 @@ class Processor {
romFile.seek(romFileIndex + i * 512);
romFile.writeByte(0xFF);
}
let romOffset = 8;
let ramOffset = 0;
for (let i = 0; i < this.roms.length; i++) {
const rom = this.roms[i];
@ -368,6 +390,51 @@ class Processor {
romFile.writeBytes(rom.bitmapBuffer);
romFileIndex += 512
// apply iG power cart hack
if (this.cartType == 1) {
// Set rom bank start
romFile.seek(0x2001 + i);
if (rom.typeByte >= 1 && rom.typeByte <= 3) {// MBC1 enabled, setting bank 0 = bank 1
romFile.writeByte(romOffset | 0x01);
}
else {
romFile.writeByte(romOffset);
}
romOffset += Math.trunc(rom.paddedRomSizeKB() / 16);
// Set ram state
romFile.seek(0x2101 + i);
if (rom.ramByte > 0) {
romFile.writeByte(1); // Ram enabled
}
else {
romFile.writeByte(0); // Ram disabled
}
// Set ram bank info
romFile.seek(0x2201 + i);
// Ram offset and if we are 8KB or 32KB locked
if (rom.ramByte == 2) { // 8KB
romFile.writeByte(ramOffset); // 8KB locked
}
else if (rom.ramByte == 3) { // 32KB
romFile.writeByte(ramOffset | 0x01); // 32KB locked
}
else {
romFile.writeByte(0);
}
// Increment ram offset after
if (rom.ramByte == 2) { // 8KB
ramOffset += 2;
}
else if (rom.ramByte == 3) { // 32KB
ramOffset += 8;
}
}
}
// write the roms