void WriteMemorySGX(int addr, byte value)
{
if (addr >= 0x1F0000 && addr < 0x1F8000) // write RAM.
Ram[addr & 0x7FFF] = value;
else if (addr >= 0x1FE000) // hardware page.
{
if (addr < 0x1FE400)
{
addr &= 0x1F;
if (addr <= 0x07) VDC1.WriteVDC(addr, value);
else if (addr <= 0x0F) VPC.WriteVPC(addr, value);
else if (addr <= 0x17) VDC2.WriteVDC(addr, value);
}
else if (addr < 0x1FE800) { Cpu.PendingCycles--; VCE.WriteVCE(addr, value); }
else if (addr < 0x1FEC00) { IOBuffer = value; PSG.WritePSG((byte)addr, value, Cpu.TotalExecutedCycles); }
else if (addr == 0x1FEC00) { IOBuffer = value; Cpu.WriteTimer(value); }
else if (addr == 0x1FEC01) { IOBuffer = value; Cpu.WriteTimerEnable(value); }
else if (addr >= 0x1FF000 &&
addr < 0x1FF400) { IOBuffer = value; WriteInput(value); }
else if (addr == 0x1FF402) { IOBuffer = value; Cpu.WriteIrqControl(value); }
else if (addr == 0x1FF403) { IOBuffer = value; Cpu.WriteIrqStatus(); }
else Log.Error("MEM", "unhandled hardware write [{0:X6}] : {1:X2}", addr, value);
}
else
Log.Error("MEM", "UNHANDLED WRITE: {0:X6}:{1:X2}", addr, value);
}
// The SuperGrafx has 32K of RAM and a different port configuration to allow
// I/O access to VDC1, VDC2, and the VPC.
byte ReadMemorySGX(int addr)
{
if (addr < 0xFFFFF) // read ROM
return RomData[addr % RomLength];
if (addr >= 0x1F0000 && addr < 0x1F8000) // read RAM
return Ram[addr & 0x7FFF];
if (addr >= 0x1FE000) // hardware page.
{
if (addr < 0x1FE400)
{
addr &= 0x1F;
if (addr <= 0x07) return VDC1.ReadVDC(addr);
if (addr <= 0x0F) return VPC.ReadVPC(addr);
if (addr <= 0x17) return VDC2.ReadVDC(addr);
return 0xFF;
}
if (addr < 0x1FE800) { Cpu.PendingCycles--; return VCE.ReadVCE(addr); }
if (addr < 0x1FEC00) return IOBuffer;
if (addr < 0x1FF000) { IOBuffer = (byte)(Cpu.ReadTimerValue() | (IOBuffer & 0x80)); return IOBuffer; }
if (addr >= 0x1FF000 &&
addr < 0x1FF400) { IOBuffer = ReadInput(); return IOBuffer; }
if ((addr & ~1) == 0x1FF400) return IOBuffer;
if (addr == 0x1FF402) { IOBuffer = Cpu.IRQControlByte; return IOBuffer; }
if (addr == 0x1FF403) { IOBuffer = (byte)(Cpu.ReadIrqStatus() | (IOBuffer & 0xF8)); return IOBuffer; }
}
Log.Error("MEM", "UNHANDLED READ: {0:X6}", addr);
return 0xFF;
}
void SyncState(Serializer ser)
{
ser.BeginSection("PCEngine");
Cpu.SyncState(ser);
VCE.SyncState(ser);
VDC1.SyncState(ser, 1);
PSG.SyncState(ser);
if (SuperGrafx)
{
VPC.SyncState(ser);
VDC2.SyncState(ser, 2);
}
if (TurboCD)
{
ADPCM.SyncState(ser);
CDAudio.SyncState(ser);
SCSI.SyncState(ser);
ser.Sync("CDRAM", ref CDRam, false);
if (SuperRam != null)
{
ser.Sync("SuperRAM", ref SuperRam, false);
}
if (ArcadeCard)
{
ArcadeCardSyncState(ser);
}
}
ser.Sync("RAM", ref Ram, false);
ser.Sync("IOBuffer", ref IOBuffer);
ser.Sync("CdIoPorts", ref CdIoPorts, false);
ser.Sync("BramLocked", ref BramLocked);
ser.Sync("Frame", ref frame);
ser.Sync("Lag", ref lagCount);
ser.Sync("IsLag", ref isLag);
if (Cpu.ReadMemory21 == ReadMemorySF2)
{
ser.Sync("SF2MapperLatch", ref SF2MapperLatch);
}
if (PopulousRAM != null)
{
ser.Sync("PopulousRAM", ref PopulousRAM, false);
}
if (BRAM != null)
{
ser.Sync("BRAM", ref BRAM, false);
}
ser.EndSection();
if (ser.IsReader)
{
SyncAllByteArrayDomains();
}
}
