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BG2 tilemap was messed up when unpausing (Fixes #20)

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Snesrev
2023-03-14 01:25:21 +01:00
parent 34751f5870
commit d265a76f05
2 changed files with 9 additions and 10 deletions
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17
src/sm_82.c
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@@ -1049,25 +1049,22 @@ CoroutineRet GameState_13_Pausing_Async(void) { // 0x828CEF
}
void BackupBG2TilemapForPauseMenu(void) { // 0x828D51
WriteReg(VMADDL, 1u);
WriteReg(VMADDH, reg_BG2SC & 0xFC);
WriteRegWord(VMADDL, (reg_BG2SC & 0xFC) << 8 | 1);
// fixed: this was missing
WriteReg(VMAIN, 0x80);
WriteReg(DMAP1, 0x81u);
WriteReg(BBAD1, 0x39u);
WriteReg(A1T1L, 0x5C);
WriteReg(A1T1H, 0xDFu);
WriteRegWord(A1T1L, 0xDF5C);
WriteReg(A1B1, 0x7Eu);
WriteReg(DAS1L, 0);
WriteReg(DAS1H, 0x10u);
WriteRegWord(DAS1L, 0x1000);
WriteReg(DAS10, 0);
WriteReg(A2A1L, 0);
WriteReg(A2A1H, 0);
WriteRegWord(A2A1L, 0);
WriteReg(NTRL1, 0);
WriteReg(MDMAEN, 2u);
}
void RestoreBG2TilemapFromPauseScreen(void) { // 0x828D96
WriteReg(VMADDL, 0);
WriteReg(VMADDH, reg_BG2SC & 0xFC);
WriteRegWord(VMADDL, (reg_BG2SC & 0xFC) << 8);
WriteReg(VMAIN, 0x80);
static const StartDmaCopy unk_828DAE = { 1, 1, 0x18, LONGPTR(0x7edf5c), 0x1000 };
SetupDmaTransfer(&unk_828DAE);

2
src/sm_cpu_infra.c
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@@ -318,6 +318,8 @@ uint32 PatchBugs(uint32 mode, uint32 addr) {
// Samus_HandleScrewAttackSpeedBoostingPals reads OOB
if (special_samus_palette_frame > 6)
special_samus_palette_frame = 6;
} else if (FixBugHook(0x828D56)) {
WriteReg(VMAIN, 0x80); // BackupBG2TilemapForPauseMenu lacks this
}
return 0;