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saturnus - Port fix from Mednafen Team to fix super tempo

This commit is contained in:
nattthebear 2017-08-20 20:42:07 -04:00
parent 097d20adf2
commit c001a1add5
2 changed files with 18 additions and 5 deletions
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23
waterbox/ss/ss.cpp
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@ -65,7 +65,7 @@ static uint8 SCU_SSH2VectorFetch(void);
static void INLINE MDFN_HOT CheckEventsByMemTS(void);
SH7095 CPU[2]{{"SH2-M", SS_EVENT_SH2_M_DMA, SCU_MSH2VectorFetch}, {"SH2-S", SS_EVENT_SH2_S_DMA, SCU_SSH2VectorFetch}};
static uint16* BIOSROM;
static uint16 *BIOSROM;
static uint16 WorkRAML[1024 * 1024 / sizeof(uint16)];
static uint16 WorkRAMH[1024 * 1024 / sizeof(uint16)]; // Effectively 32-bit in reality, but 16-bit here because of CPU interpreter design(regarding fastmap).
static uint8 BackupRAM[32768];
@ -92,6 +92,9 @@ static void INLINE SH7095_BusWrite(uint32 A, T V, const bool BurstHax, int32 *SH
template <typename T>
static T INLINE SH7095_BusRead(uint32 A, const bool BurstHax, int32 *SH2DMAHax);
static int32 ExtBusCounter[2];
static size_t ExtBusWhich;
// SH-2 region
// 0: 0x00000000-0x01FFFFFF
// 1: 0x02000000-0x03FFFFFF
@ -105,6 +108,9 @@ static T INLINE SH7095_BusRead(uint32 A, const bool BurstHax, int32 *SH2DMAHax);
template <typename T, bool IsWrite>
static INLINE void BusRW(uint32 A, T &V, const bool BurstHax, int32 *SH2DMAHax)
{
if (!BurstHax && !SH2DMAHax)
ExtBusCounter[ExtBusWhich]++;
//
// High work RAM
//
@ -636,11 +642,18 @@ static int32 NO_INLINE MDFN_HOT RunLoop(EmulateSpecStruct *espec)
{
do
{
ExtBusCounter[0] = ExtBusCounter[1] = 0;
ExtBusWhich = 0;
if (DebugMode)
DBG_CPUHandler<0>(eff_ts);
CPU[0].Step<0, DebugMode>();
if (CPU[0].DMA_RunCond(0) || CPU[0].DMA_RunCond(1))
CPU[0].timestamp += ExtBusCounter[0] * 16;
ExtBusWhich = 1;
while (MDFN_LIKELY(CPU[0].timestamp > CPU[1].timestamp))
{
if (DebugMode)
@ -927,7 +940,7 @@ static bool MDFN_COLD InitCommon(const unsigned cart_type, const unsigned smpc_a
// Call InitFastMemMap() before functions like SOUND_Init()
InitFastMemMap();
BIOSROM = (uint16*)alloc_sealed(524288);
BIOSROM = (uint16 *)alloc_sealed(524288);
AddMemoryDomain("Boot Rom", BIOSROM, 524288, MEMORYAREA_FLAGS_YUGEENDIAN | MEMORYAREA_FLAGS_WORDSIZE2);
SS_SetPhysMemMap(0x00000000, 0x000FFFFF, BIOSROM, 524288);
SS_SetPhysMemMap(0x00200000, 0x003FFFFF, WorkRAML, sizeof(WorkRAML), true);
@ -969,7 +982,7 @@ static bool MDFN_COLD InitCommon(const unsigned cart_type, const unsigned smpc_a
return false;
}
FirmwareDataCallback(biospath, (uint8*)&BIOSROM[0]);
FirmwareDataCallback(biospath, (uint8 *)&BIOSROM[0]);
for (unsigned i = 0; i < 262144; i++)
BIOSROM[i] = MDFN_de16msb(&BIOSROM[i]);
@ -994,8 +1007,8 @@ static bool MDFN_COLD InitCommon(const unsigned cart_type, const unsigned smpc_a
CorrectAspect = setting_ss_correct_aspect;
ShowHOverscan = setting_ss_h_overscan;
DoHBlend = setting_ss_h_blend;
LineVisFirst = sls;
LineVisLast = sle;
LineVisFirst = sls;
LineVisLast = sle;
MDFN_printf(_("Displayed scanlines: [%u,%u]\n"), sls, sle);
MDFN_printf(_("Correct Aspect Ratio: %s\n"), correct_aspect ? _("Enabled") : _("Disabled"));