public RandomAccessMemory(ushort beginAddress, ReadOnlySpan <byte> memory, MemoryLines connections)
{
_memory = memory.ToArray();
BeginAddress = beginAddress;
EndAddress = (ushort)(beginAddress + _memory.Length - 1);
Connections = connections;
Connections.AttachMemory(this);
}
public RandomAccessMemory(ushort beginAddress, int size, MemoryLines connections)
{
if (size < 1)
{
throw new ArgumentOutOfRangeException(nameof(size), "Size must be greater than zero");
}
_memory = new byte[size];
BeginAddress = beginAddress;
EndAddress = (ushort)(beginAddress + _memory.Length - 1);
Connections = connections;
Connections.AttachMemory(this);
}
public Z80System()
{
DataBus = new DataBus();
AddressBus = new AddressBus();
Z80Clock = new PassthroughClock();
CpuLines = new Z80CPULines
{
AddressBus = AddressBus,
DataBus = DataBus,
SystemClock = Z80Clock,
BUSACK = new TristateWire(),
BUSREQ = new TristateWire(TristateWireState.PullUp),
HALT = new TristateWire(),
INT = new TristateWire(TristateWireState.PullUp),
IORQ = new TristateWire(),
M1 = new TristateWire(),
MREQ = new TristateWire(),
NMI = new TristateWire(TristateWireState.PullUp),
RD = new TristateWire(),
RESET = new TristateWire(TristateWireState.PullUp),
RFSH = new TristateWire(),
WAIT = new TristateWire(TristateWireState.PullUp),
WR = new TristateWire()
};
var memoryConnects = new MemoryLines
{
AddressBus = AddressBus,
Clock = Z80Clock,
DataBus = DataBus,
MREQ = CpuLines.MREQ,
RD = CpuLines.RD,
WAIT = CpuLines.WAIT,
WR = CpuLines.WR
};
Memory = new RandomAccessMemory(0, 0x10000, memoryConnects);
Cpu = new Z80CPU(CpuLines);
}