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GBA: Reset active region as needed when loading a ROM

This commit is contained in:
Vicki Pfau 2017-07-21 17:15:24 -07:00
parent 38e56597b5
commit 9d8f99295b
2 changed files with 11 additions and 0 deletions
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1
CHANGES
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@ -4,6 +4,7 @@ Features:
Bugfixes:
- GB Audio: Make audio unsigned with bias (fixes mgba.io/i/749)
- Python: Fix importing .gb or .gba before .core
- GBA: Reset active region as needed when loading a ROM
Misc:
- GBA Timer: Use global cycles for timers
- GBA: Extend oddly-sized ROMs to full address space (fixes mgba.io/i/722)

10
src/gba/gba.c
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@ -312,6 +312,10 @@ bool GBALoadNull(struct GBA* gba) {
gba->memory.romMask = SIZE_CART0 - 1;
gba->memory.mirroring = false;
gba->romCrc32 = 0;
if (gba->cpu) {
gba->cpu->memory.setActiveRegion(gba->cpu, gba->cpu->gprs[ARM_PC]);
}
return true;
}
@ -335,6 +339,9 @@ bool GBALoadMB(struct GBA* gba, struct VFile* vf) {
gba->memory.romSize = 0;
gba->memory.romMask = 0;
gba->romCrc32 = doCrc32(gba->memory.wram, gba->pristineRomSize);
if (gba->cpu && gba->memory.activeRegion == REGION_WORKING_RAM) {
gba->cpu->memory.setActiveRegion(gba->cpu, gba->cpu->gprs[ARM_PC]);
}
return true;
}
@ -379,6 +386,9 @@ bool GBALoadROM(struct GBA* gba, struct VFile* vf) {
gba->memory.romSize = SIZE_CART0;
gba->isPristine = false;
}
if (gba->cpu && gba->memory.activeRegion >= REGION_CART0) {
gba->cpu->memory.setActiveRegion(gba->cpu, gba->cpu->gprs[ARM_PC]);
}
// TODO: error check
return true;
}