public void WriteMemoryZ80(ushort address, byte value)
{
if (address < 0x4000)
{
//Console.WriteLine("write z80 memory {0:X4}: {1:X2}",address, value);
Z80Ram[address & 0x1FFF] = value;
return;
}
if (address >= 0x4000 && address < 0x6000)
{
//Console.WriteLine(" === Z80 WRITES YM2612 {0:X4}:{1:X2} ===",address, value);
YM2612.Write(address & 3, value, SoundCPU.TotalExecutedCycles);
return;
}
if (address < 0x6100)
{
BankRegion >>= 1;
BankRegion |= (value & 1) << 23;
BankRegion &= 0x00FF8000;
//Console.WriteLine("Bank pointing at {0:X8}",BankRegion);
return;
}
if (address >= 0x7F00 && address < 0x7F20)
{
switch (address & 0x1F)
{
case 0x00:
case 0x02:
VDP.WriteVdpData((ushort)((value << 8) | value));
return;
case 0x04:
case 0x06:
VDP.WriteVdpControl((ushort)((value << 8) | value));
return;
case 0x11:
case 0x13:
case 0x15:
case 0x17:
PSG.WritePsgData(value, SoundCPU.TotalExecutedCycles);
return;
}
}
if (address >= 0x8000)
{
WriteByte(BankRegion | (address & 0x7FFF), (sbyte)value);
return;
}
Console.WriteLine("UNHANDLED Z80 WRITE {0:X4}:{1:X2}", address, value);
}
public void WriteWord(int address, short value)
{
address &= 0x00FFFFFF;
if (address >= 0xE00000) // Work RAM
{
//Console.WriteLine("MEM[{0:X4}] change to {1:X4}", address & 0xFFFF, value);
Ram[(address & 0xFFFF) + 0] = (byte)(value >> 8);
Ram[(address & 0xFFFF) + 1] = (byte)value;
return;
}
if (address >= 0xC00000)
{
switch (address & 0x1F)
{
case 0x00:
case 0x02:
VDP.WriteVdpData((ushort)value);
return;
case 0x04:
case 0x06:
VDP.WriteVdpControl((ushort)value);
return;
}
}
if (address == 0xA11100) // Z80 BUSREQ
{
M68000HasZ80Bus = (value & 0x100) != 0;
//Console.WriteLine("68000 has the z80 bus: " + M68000HasZ80Bus);
return;
}
if (address == 0xA11200) // Z80 RESET
{
Z80Reset = (value & 0x100) == 0;
if (Z80Reset)
{
SoundCPU.SoftReset();
}
//Console.WriteLine("z80 reset: " + Z80Reset);
return;
}
Console.WriteLine("UNHANDLED WRITEW {0:X6}:{1:X4}", address, value);
}
