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GB: Fix VRAM/palette locking (fixes #1109)

This commit is contained in:
Vicki Pfau 2018-06-24 16:11:37 -07:00
parent e748d8fe77
commit e78333611d
3 changed files with 17 additions and 7 deletions
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1
CHANGES
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@ -62,6 +62,7 @@ Misc:
- Qt: Add load alternate save option
- GB Audio: Improved audio quality
- GB, GBA Audio: Increase max audio volume
- GB: Fix VRAM/palette locking (fixes mgba.io/i/1109)
0.6.3: (2017-04-14)
Bugfixes:

4
src/gb/io.c
View File

@ -489,8 +489,10 @@ void GBIOWrite(struct GB* gb, unsigned address, uint8_t value) {
gb->memory.io[REG_BCPD] = gb->video.palette[gb->video.bcpIndex >> 1] >> (8 * (gb->video.bcpIndex & 1));
break;
case REG_BCPD:
if (gb->video.mode != 3) {
GBVideoProcessDots(&gb->video, 0);
GBVideoWritePalette(&gb->video, address, value);
}
return;
case REG_OCPS:
gb->video.ocpIndex = value & 0x3F;
@ -498,8 +500,10 @@ void GBIOWrite(struct GB* gb, unsigned address, uint8_t value) {
gb->memory.io[REG_OCPD] = gb->video.palette[8 * 4 + (gb->video.ocpIndex >> 1)] >> (8 * (gb->video.ocpIndex & 1));
break;
case REG_OCPD:
if (gb->video.mode != 3) {
GBVideoProcessDots(&gb->video, 0);
GBVideoWritePalette(&gb->video, address, value);
}
return;
case REG_SVBK:
GBMemorySwitchWramBank(&gb->memory, value);

5
src/gb/memory.c
View File

@ -239,7 +239,10 @@ uint8_t GBLoad8(struct LR35902Core* cpu, uint16_t address) {
return memory->romBank[address & (GB_SIZE_CART_BANK0 - 1)];
case GB_REGION_VRAM:
case GB_REGION_VRAM + 1:
if (gb->video.mode != 3) {
return gb->video.vramBank[address & (GB_SIZE_VRAM_BANK0 - 1)];
}
return 0xFF;
case GB_REGION_EXTERNAL_RAM:
case GB_REGION_EXTERNAL_RAM + 1:
if (memory->rtcAccess) {
@ -309,8 +312,10 @@ void GBStore8(struct LR35902Core* cpu, uint16_t address, int8_t value) {
return;
case GB_REGION_VRAM:
case GB_REGION_VRAM + 1:
if (gb->video.mode != 3) {
gb->video.renderer->writeVRAM(gb->video.renderer, (address & (GB_SIZE_VRAM_BANK0 - 1)) | (GB_SIZE_VRAM_BANK0 * gb->video.vramCurrentBank));
gb->video.vramBank[address & (GB_SIZE_VRAM_BANK0 - 1)] = value;
}
return;
case GB_REGION_EXTERNAL_RAM:
case GB_REGION_EXTERNAL_RAM + 1: