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mgba
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16-bit DMA address writes

This commit is contained in:
Jeffrey Pfau 2013-04-30 23:22:39 -07:00
parent da489b90f8
commit 5f6cf337a0
1 changed files with 25 additions and 1 deletions
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26
src/gba/gba-io.c
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@ -18,6 +18,28 @@ void GBAIOWrite(struct GBA* gba, uint32_t address, uint16_t value) {
break; break;
// DMA // DMA
case REG_DMA0SAD_LO:
case REG_DMA0DAD_LO:
case REG_DMA1SAD_LO:
case REG_DMA1DAD_LO:
case REG_DMA2SAD_LO:
case REG_DMA2DAD_LO:
case REG_DMA3SAD_LO:
case REG_DMA3DAD_LO:
GBAIOWrite32(gba, address, (gba->memory.io[(address >> 1) + 1] << 16) | value);
break;
case REG_DMA0SAD_HI:
case REG_DMA0DAD_HI:
case REG_DMA1SAD_HI:
case REG_DMA1DAD_HI:
case REG_DMA2SAD_HI:
case REG_DMA2DAD_HI:
case REG_DMA3SAD_HI:
case REG_DMA3DAD_HI:
GBAIOWrite32(gba, address - 2, gba->memory.io[(address >> 1) - 1] | (value << 16));
break;
case REG_DMA0CNT_LO: case REG_DMA0CNT_LO:
GBAMemoryWriteDMACNT_LO(&gba->memory, 0, value); GBAMemoryWriteDMACNT_LO(&gba->memory, 0, value);
break; break;
@ -132,8 +154,10 @@ void GBAIOWrite32(struct GBA* gba, uint32_t address, uint32_t value) {
default: default:
GBAIOWrite(gba, address, value & 0xFFFF); GBAIOWrite(gba, address, value & 0xFFFF);
GBAIOWrite(gba, address | 2, value >> 16); GBAIOWrite(gba, address | 2, value >> 16);
break; return;
} }
gba->memory.io[address >> 1] = value;
gba->memory.io[(address >> 1) + 1] = value >> 16;
} }
uint16_t GBAIORead(struct GBA* gba, uint32_t address) { uint16_t GBAIORead(struct GBA* gba, uint32_t address) {