C++ (Cpp) SA1CheckFlag Exemples

Exemple #1

Fichier : sa1cpu.cpp Projet : BruceJawn/flashsnes

void S9xSA1MainLoop ()
{
    int i;

#if 0
    if (SA1.Flags & NMI_FLAG)
    {
	SA1.Flags &= ~NMI_FLAG;
	if (SA1.WaitingForInterrupt)
	{
	    SA1.WaitingForInterrupt = FALSE;
	    SA1Registers.PCw++;
	}
	S9xSA1Opcode_NMI ();
    }
#endif
    if (SA1.Flags & IRQ_FLAG)
    {
	if (SA1.IRQActive)
	{
	    if (SA1.WaitingForInterrupt)
	    {
		SA1.WaitingForInterrupt = FALSE;
		SA1Registers.PCw++;
	    }
	    if (!SA1CheckFlag (IRQ))
		S9xSA1Opcode_IRQ ();
	}
	else
	    SA1.Flags &= ~IRQ_FLAG;
    }
    for (i = 0; i < 3 && SA1.Executing; i++)
    {
#ifdef DEBUGGER
        if (SA1.Flags & TRACE_FLAG){ S9xSA1Trace(); }
#endif
#ifdef CPU_SHUTDOWN
        SA1.PBPCAtOpcodeStart = SA1Registers.PBPC;
#endif

        register uint8 Op;
        register struct SOpcodes *Opcodes;
        if(SA1.PCBase){
            SA1OpenBus = Op = SA1.PCBase[Registers.PCw];
            Opcodes = SA1.S9xOpcodes;
        } else {
            Op = S9xSA1GetByte(Registers.PBPC);
            Opcodes = S9xOpcodesSlow;
        }
        if((SA1Registers.PCw&MEMMAP_MASK)+SA1.S9xOpLengths[Op]>=MEMMAP_BLOCK_SIZE){
            uint32 oldPC = SA1Registers.PBPC;
            S9xSA1SetPCBase(SA1Registers.PBPC);
            SA1Registers.PBPC = oldPC;
            Opcodes = S9xSA1OpcodesSlow;
        }
        Registers.PCw++;
        (*Opcodes[Op].S9xOpcode) ();
    }
}

Exemple #2

Fichier : sa1cpu.cpp Projet : dtzWill/supernes

void S9xSA1MainLoop ()
{
    int i;

#if 0
    if (SA1.Flags & NMI_FLAG)
    {
		SA1.Flags &= ~NMI_FLAG;
		if (SA1.WaitingForInterrupt)
		{
			SA1.WaitingForInterrupt = FALSE;
			SA1.PC++;
		}
		S9xSA1Opcode_NMI ();
    }
#endif
    if (SA1.Flags & IRQ_PENDING_FLAG)
    {
		if (SA1.IRQActive)
		{
			if (SA1.WaitingForInterrupt)
			{
				SA1.WaitingForInterrupt = FALSE;
				SA1.PC++;
			}
			if (!SA1CheckFlag (IRQ))
				S9xSA1Opcode_IRQ ();
		}
		else
			SA1.Flags &= ~IRQ_PENDING_FLAG;
    }
#ifdef DEBUGGER
    if (SA1.Flags & TRACE_FLAG)
    {
		for (i = 0; i < 3 && SA1.Executing; i++)
		{
			S9xSA1Trace ();
#ifdef CPU_SHUTDOWN
		    SA1.PCAtOpcodeStart = SA1.PC;
#endif
		    (*SA1.S9xOpcodes [*SA1.PC++].S9xOpcode)();
		}
		return;
    }
#endif
	for (i = 0; i < 3 && SA1.Executing; i++)
	{
#ifdef CPU_SHUTDOWN
		SA1.PCAtOpcodeStart = SA1.PC;
#endif
		(*SA1.S9xOpcodes [*SA1.PC++].S9xOpcode)();
	}
}

Exemple #3

Fichier : sa1cpu.c Projet : NunaticAlumina/pocketsnes-libretro

void S9xSA1MainLoop()
{
   int i;

   if (SA1.Flags & IRQ_PENDING_FLAG)
   {
      if (SA1.IRQActive)
      {
         if (SA1.WaitingForInterrupt)
         {
            SA1.WaitingForInterrupt = FALSE;
            SA1.PC++;
         }
         if (!SA1CheckFlag(IRQ))
            S9xSA1Opcode_IRQ();
      }
      else
         SA1.Flags &= ~IRQ_PENDING_FLAG;
   }

   for (i = 0; i < 3 && SA1.Executing; i++)
      (*SA1.S9xOpcodes [*SA1.PC++].S9xOpcode)();
}

Exemple #4

Fichier : sa1cpu.cpp Projet : ChunHungLiu/xnes

void S9xSA1MainLoop (void)
{
	if (Memory.FillRAM[0x2200] & 0x60)
	{
		SA1.Cycles += 6; // FIXME
		S9xSA1UpdateTimer();
		return;
	}

	// SA-1 NMI
	if ((Memory.FillRAM[0x2200] & 0x10) && !(Memory.FillRAM[0x220b] & 0x10))
	{
		Memory.FillRAM[0x2301] |= 0x10;
		Memory.FillRAM[0x220b] |= 0x10;

		if (SA1.WaitingForInterrupt)
		{
			SA1.WaitingForInterrupt = FALSE;
			SA1Registers.PCw++;
		}

		S9xSA1Opcode_NMI();
	}
	else
	if (!SA1CheckFlag(IRQ))
	{
		// SA-1 Timer IRQ
		if ((Memory.FillRAM[0x220a] & 0x40) && !(Memory.FillRAM[0x220b] & 0x40))
		{
			Memory.FillRAM[0x2301] |= 0x40;

			if (SA1.WaitingForInterrupt)
			{
				SA1.WaitingForInterrupt = FALSE;
				SA1Registers.PCw++;
			}

			S9xSA1Opcode_IRQ();
		}
		else
		// SA-1 DMA IRQ
		if ((Memory.FillRAM[0x220a] & 0x20) && !(Memory.FillRAM[0x220b] & 0x20))
		{
			Memory.FillRAM[0x2301] |= 0x20;

			if (SA1.WaitingForInterrupt)
			{
				SA1.WaitingForInterrupt = FALSE;
				SA1Registers.PCw++;
			}

			S9xSA1Opcode_IRQ();
		}
		else
		// SA-1 IRQ
		if ((Memory.FillRAM[0x2200] & 0x80) && !(Memory.FillRAM[0x220b] & 0x80))
		{
			Memory.FillRAM[0x2301] |= 0x80;

			if (SA1.WaitingForInterrupt)
			{
				SA1.WaitingForInterrupt = FALSE;
				SA1Registers.PCw++;
			}

			S9xSA1Opcode_IRQ();
		}
	}

	for (int i = 0; i < 3 && !(Memory.FillRAM[0x2200] & 0x60); i++)
	{
	#ifdef DEBUGGER
		if (SA1.Flags & TRACE_FLAG)
			S9xSA1Trace();
	#endif

		register uint8				Op;
		register Opcode				*Opcodes;

		if (SA1.PCBase)
		{
			SA1OpenBus = Op = SA1.PCBase[Registers.PCw];
			Opcodes = SA1.S9xOpcodes;
		}
		else
		{
			Op = S9xSA1GetByte(Registers.PBPC);
			Opcodes = S9xOpcodesSlow;
		}

		if ((SA1Registers.PCw & MEMMAP_MASK) + SA1.S9xOpLengths[Op] >= MEMMAP_BLOCK_SIZE)
		{
			uint32	oldPC = SA1Registers.PBPC;
			S9xSA1SetPCBase(SA1Registers.PBPC);
			SA1Registers.PBPC = oldPC;
			Opcodes = S9xSA1OpcodesSlow;
		}

		Registers.PCw++;
		Opcodes[Op]();
	}

	S9xSA1UpdateTimer();
}