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GB: Support CGB lockout

This commit is contained in:
Vicki Pfau 2017-09-26 18:22:09 -07:00
parent b11171c6f1
commit d3d7b9606c
3 changed files with 22 additions and 0 deletions
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1
include/mgba/internal/gb/video.h
View File

@ -167,6 +167,7 @@ void GBVideoWriteLYC(struct GBVideo* video, uint8_t value);
void GBVideoWritePalette(struct GBVideo* video, uint16_t address, uint8_t value);
void GBVideoSwitchBank(struct GBVideo* video, uint8_t value);
void GBVideoDisableCGB(struct GBVideo* video);
void GBVideoSetPalette(struct GBVideo* video, unsigned index, uint32_t color);
void GBVideoWriteSGBPacket(struct GBVideo* video, uint8_t* data);

4
src/gb/io.c
View File

@ -424,6 +424,10 @@ void GBIOWrite(struct GB* gb, unsigned address, uint8_t value) {
free(gb->memory.romBase);
gb->memory.romBase = gb->memory.rom;
}
if (gb->model >= GB_MODEL_CGB && gb->memory.io[0x6C]) {
gb->model = GB_MODEL_DMG;
GBVideoDisableCGB(&gb->video);
}
break;
case REG_IE:
gb->memory.ie = value;

17
src/gb/video.c
View File

@ -561,6 +561,23 @@ void GBVideoSetPalette(struct GBVideo* video, unsigned index, uint32_t color) {
video->dmgPalette[index] = M_RGB8_TO_RGB5(color);
}
void GBVideoDisableCGB(struct GBVideo* video) {
video->dmgPalette[0] = video->palette[0];
video->dmgPalette[1] = video->palette[1];
video->dmgPalette[2] = video->palette[2];
video->dmgPalette[3] = video->palette[3];
video->dmgPalette[4] = video->palette[8 * 4 + 0];
video->dmgPalette[5] = video->palette[8 * 4 + 1];
video->dmgPalette[6] = video->palette[8 * 4 + 2];
video->dmgPalette[7] = video->palette[8 * 4 + 3];
video->dmgPalette[8] = video->palette[9 * 4 + 0];
video->dmgPalette[9] = video->palette[9 * 4 + 1];
video->dmgPalette[10] = video->palette[9 * 4 + 2];
video->dmgPalette[11] = video->palette[9 * 4 + 3];
video->renderer->deinit(video->renderer);
video->renderer->init(video->renderer, video->p->model, video->sgbBorders);
}
void GBVideoWriteSGBPacket(struct GBVideo* video, uint8_t* data) {
int i;
if (!(video->sgbCommandHeader & 7)) {