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GB Serialize: Add missing savestate support for MBC6 and NT (newer)

This commit is contained in:
Vicki Pfau 2022-10-15 04:42:10 -07:00
parent 0bd4ad034e
commit 1f36728244
5 changed files with 49 additions and 4 deletions
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2
CHANGES
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@ -5,6 +5,8 @@ Other fixes:
- Qt: Manually split filename to avoid overzealous splitting (fixes mgba.io/i/2681)
- Qt: Expand criteria for tag branch names (fixes mgba.io/i/2679)
- Res: Fix species name location in Ruby/Sapphire revs 1/2 (fixes mgba.io/i/2685)
Misc:
- GB Serialize: Add missing savestate support for MBC6 and NT (newer)
0.10.0: (2022-10-11)
Features:

1
include/mgba/internal/gb/memory.h
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@ -191,7 +191,6 @@ struct GBMBC1State {
};
struct GBMBC6State {
bool sramAccess;
bool flashBank0;
bool flashBank1;
};

13
include/mgba/internal/gb/serialize.h
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@ -266,6 +266,10 @@ DECL_BITS(GBSerializedVideoFlags, Mode, 2, 2);
DECL_BIT(GBSerializedVideoFlags, NotModeEventScheduled, 4);
DECL_BIT(GBSerializedVideoFlags, NotFrameEventScheduled, 5);
DECL_BITFIELD(GBSerializedMBC6Flags, uint8_t);
DECL_BIT(GBSerializedMBC6Flags, FlashBank0, 0);
DECL_BIT(GBSerializedMBC6Flags, FlashBank1, 1);
DECL_BITFIELD(GBSerializedMBC7Flags, uint8_t);
DECL_BITS(GBSerializedMBC7Flags, Command, 0, 2);
DECL_BIT(GBSerializedMBC7Flags, Writable, 2);
@ -392,6 +396,11 @@ struct GBSerializedState {
struct {
uint64_t lastLatch;
} rtc;
struct {
GBSerializedMBC6Flags flags;
uint8_t bank1;
uint8_t sramBank1;
} mbc6;
struct {
uint8_t state;
GBMBC7Field eeprom;
@ -421,6 +430,10 @@ struct GBSerializedState {
uint8_t baseBank;
uint8_t bankCount;
} ntOld1;
struct {
uint8_t splitMode;
uint8_t bank1;
} ntNew;
struct {
uint8_t dataSwapMode;
uint8_t bankSwapMode;

1
src/gb/mbc.c
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@ -573,7 +573,6 @@ void GBMBCReset(struct GB* gb) {
case GB_MBC6:
GBMBCSwitchHalfBank(gb, 0, 2);
GBMBCSwitchHalfBank(gb, 1, 3);
gb->memory.mbcState.mbc6.sramAccess = false;
GBMBCSwitchSramHalfBank(gb, 0, 0);
GBMBCSwitchSramHalfBank(gb, 0, 1);
break;

34
src/gb/memory.c
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@ -755,6 +755,12 @@ void GBMemorySerialize(const struct GB* gb, struct GBSerializedState* state) {
case GB_MBC3_RTC:
STORE_64LE(memory->rtcLastLatch, 0, &state->memory.rtc.lastLatch);
break;
case GB_MBC6:
state->memory.mbc6.flags = GBSerializedMBC6FlagsSetFlashBank0(0, memory->mbcState.mbc6.flashBank0);
state->memory.mbc6.flags = GBSerializedMBC6FlagsSetFlashBank1(state->memory.mbc6.flags, memory->mbcState.mbc6.flashBank1);
state->memory.mbc6.bank1 = memory->currentBank1;
state->memory.mbc6.sramBank1 = memory->currentSramBank1;
break;
case GB_MBC7:
state->memory.mbc7.state = memory->mbcState.mbc7.state;
state->memory.mbc7.eeprom = memory->mbcState.mbc7.eeprom;
@ -802,6 +808,10 @@ void GBMemorySerialize(const struct GB* gb, struct GBSerializedState* state) {
state->memory.ntOld1.baseBank = memory->mbcState.ntOld1.baseBank;
state->memory.ntOld1.bankCount = memory->mbcState.ntOld1.bankCount;
break;
case GB_UNL_NT_NEW:
state->memory.ntNew.splitMode = memory->mbcState.ntNew.splitMode;
state->memory.ntNew.bank1 = memory->currentBank1;
break;
case GB_UNL_BBD:
case GB_UNL_HITEK:
state->memory.bbd.dataSwapMode = memory->mbcState.bbd.dataSwapMode;
@ -828,9 +838,11 @@ void GBMemoryDeserialize(struct GB* gb, const struct GBSerializedState* state) {
memory->wramCurrentBank = state->memory.wramCurrentBank;
memory->sramCurrentBank = state->memory.sramCurrentBank;
GBMBCSwitchBank(gb, memory->currentBank);
GBMemorySwitchWramBank(memory, memory->wramCurrentBank);
if (memory->mbcType != GB_MBC6 && memory->mbcType != GB_UNL_NT_NEW) {
GBMBCSwitchBank(gb, memory->currentBank);
GBMBCSwitchSramBank(gb, memory->sramCurrentBank);
}
LOAD_16LE(memory->dmaSource, 0, &state->memory.dmaSource);
LOAD_16LE(memory->dmaDest, 0, &state->memory.dmaDest);
@ -887,6 +899,16 @@ void GBMemoryDeserialize(struct GB* gb, const struct GBSerializedState* state) {
case GB_MBC3_RTC:
LOAD_64LE(memory->rtcLastLatch, 0, &state->memory.rtc.lastLatch);
break;
case GB_MBC6:
memory->mbcState.mbc6.flashBank0 = GBSerializedMBC6FlagsGetFlashBank0(state->memory.mbc6.flags);
memory->mbcState.mbc6.flashBank1 = GBSerializedMBC6FlagsGetFlashBank1(state->memory.mbc6.flags);
memory->currentBank1 = state->memory.mbc6.bank1;
memory->currentSramBank1 = state->memory.mbc6.sramBank1;
GBMBCSwitchHalfBank(gb, 0, memory->currentBank);
GBMBCSwitchHalfBank(gb, 1, memory->currentBank1);
GBMBCSwitchSramHalfBank(gb, 0, memory->sramCurrentBank);
GBMBCSwitchSramHalfBank(gb, 1, memory->currentSramBank1);
break;
case GB_MBC7:
memory->mbcState.mbc7.state = state->memory.mbc7.state;
memory->mbcState.mbc7.eeprom = state->memory.mbc7.eeprom;
@ -940,6 +962,16 @@ void GBMemoryDeserialize(struct GB* gb, const struct GBSerializedState* state) {
memory->mbcState.ntOld1.bankCount = state->memory.ntOld1.bankCount;
GBMBCSwitchBank0(gb, memory->mbcState.ntOld1.baseBank);
break;
case GB_UNL_NT_NEW:
memory->mbcState.ntNew.splitMode = state->memory.ntNew.splitMode;
memory->currentBank1 = state->memory.ntNew.bank1;
if (memory->mbcState.ntNew.splitMode) {
GBMBCSwitchHalfBank(gb, 0, memory->currentBank);
GBMBCSwitchHalfBank(gb, 1, memory->currentBank1);
} else {
GBMBCSwitchBank(gb, memory->currentBank);
}
break;
case GB_UNL_BBD:
case GB_UNL_HITEK:
memory->mbcState.bbd.dataSwapMode = state->memory.bbd.dataSwapMode & 0x7;