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mgba
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Mirror SRAM across 0x0F000000

This commit is contained in:
Jeffrey Pfau 2013-11-23 16:22:26 -08:00
parent bc03872ab5
commit d53b1c784f
2 changed files with 14 additions and 6 deletions
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14
src/gba/gba-memory.c
View File

@ -170,6 +170,7 @@ int32_t GBALoad32(struct ARMMemory* memory, uint32_t address, int* cycleCounter)
}
break;
case BASE_CART_SRAM:
case BASE_CART_SRAM_MIRROR:
GBALog(gbaMemory->p, GBA_LOG_STUB, "Unimplemented memory Load32: 0x%08X", address);
break;
default:
@ -251,6 +252,7 @@ int16_t GBALoad16(struct ARMMemory* memory, uint32_t address, int* cycleCounter)
}
break;
case BASE_CART_SRAM:
case BASE_CART_SRAM_MIRROR:
GBALog(gbaMemory->p, GBA_LOG_STUB, "Unimplemented memory Load16: 0x%08X", address);
break;
default:
@ -319,6 +321,7 @@ int8_t GBALoad8(struct ARMMemory* memory, uint32_t address, int* cycleCounter) {
}
break;
case BASE_CART_SRAM:
case BASE_CART_SRAM_MIRROR:
wait = gbaMemory->waitstates16[address >> BASE_OFFSET];
if (gbaMemory->savedata.type == SAVEDATA_NONE) {
GBASavedataInitSRAM(&gbaMemory->savedata);
@ -375,6 +378,7 @@ void GBAStore32(struct ARMMemory* memory, uint32_t address, int32_t value, int*
GBALog(gbaMemory->p, GBA_LOG_STUB, "Unimplemented memory Store32: 0x%08X", address);
break;
case BASE_CART_SRAM:
case BASE_CART_SRAM_MIRROR:
GBALog(gbaMemory->p, GBA_LOG_STUB, "Unimplemented memory Store32: 0x%08X", address);
break;
default:
@ -430,6 +434,7 @@ void GBAStore16(struct ARMMemory* memory, uint32_t address, int16_t value, int*
GBASavedataWriteEEPROM(&gbaMemory->savedata, value, 1);
break;
case BASE_CART_SRAM:
case BASE_CART_SRAM_MIRROR:
GBALog(gbaMemory->p, GBA_LOG_STUB, "Unimplemented memory Store16: 0x%08X", address);
break;
default:
@ -476,6 +481,7 @@ void GBAStore8(struct ARMMemory* memory, uint32_t address, int8_t value, int* cy
GBALog(gbaMemory->p, GBA_LOG_STUB, "Unimplemented memory Store8: 0x%08X", address);
break;
case BASE_CART_SRAM:
case BASE_CART_SRAM_MIRROR:
if (gbaMemory->savedata.type == SAVEDATA_NONE) {
if (address == SAVEDATA_FLASH_BASE) {
GBASavedataInitFlash(&gbaMemory->savedata);
@ -517,10 +523,10 @@ void GBAAdjustWaitstates(struct GBAMemory* memory, uint16_t parameters) {
int ws2seq = (parameters & 0x0400) >> 10;
int prefetch = parameters & 0x4000;
memory->waitstates16[REGION_CART_SRAM] = GBA_ROM_WAITSTATES[sram];
memory->waitstatesSeq16[REGION_CART_SRAM] = GBA_ROM_WAITSTATES[sram];
memory->waitstates32[REGION_CART_SRAM] = 2 * GBA_ROM_WAITSTATES[sram] + 1;
memory->waitstatesSeq32[REGION_CART_SRAM] = 2 * GBA_ROM_WAITSTATES[sram] + 1;
memory->waitstates16[REGION_CART_SRAM] = memory->waitstates16[REGION_CART_SRAM_MIRROR] = GBA_ROM_WAITSTATES[sram];
memory->waitstatesSeq16[REGION_CART_SRAM] = memory->waitstatesSeq16[REGION_CART_SRAM_MIRROR] = GBA_ROM_WAITSTATES[sram];
memory->waitstates32[REGION_CART_SRAM] = memory->waitstates32[REGION_CART_SRAM_MIRROR] = 2 * GBA_ROM_WAITSTATES[sram] + 1;
memory->waitstatesSeq32[REGION_CART_SRAM] = memory->waitstatesSeq32[REGION_CART_SRAM_MIRROR] = 2 * GBA_ROM_WAITSTATES[sram] + 1;
memory->waitstates16[REGION_CART0] = memory->waitstates16[REGION_CART0_EX] = GBA_ROM_WAITSTATES[ws0];
memory->waitstates16[REGION_CART1] = memory->waitstates16[REGION_CART1_EX] = GBA_ROM_WAITSTATES[ws1];

6
src/gba/gba-memory.h
View File

@ -22,7 +22,8 @@ enum GBAMemoryRegion {
REGION_CART1_EX = 0xB,
REGION_CART2 = 0xC,
REGION_CART2_EX = 0xD,
REGION_CART_SRAM = 0xE
REGION_CART_SRAM = 0xE,
REGION_CART_SRAM_MIRROR = 0xF
};
enum GBAMemoryBase {
@ -39,7 +40,8 @@ enum GBAMemoryBase {
BASE_CART1_EX = 0x0B000000,
BASE_CART2 = 0x0C000000,
BASE_CART2_EX = 0x0D000000,
BASE_CART_SRAM = 0x0E000000
BASE_CART_SRAM = 0x0E000000,
BASE_CART_SRAM_MIRROR = 0x0F000000
};
enum {