public Clock.ClockEntry CreateOps()
{
Clock.ClockEntry op = new Clock.ClockEntry(this);
op.Next = op;
return(op);
}
public Clock.ClockEntry CreateOps()
{
Clock.ClockEntry op = new Clock.ClockEntry(this);
op.Next = op;
return op;
}
public virtual void Execute(Clock.Clock clock, byte cycle)
{
Clock.ClockEntry first = null;
Clock.ClockEntry next = null;
if (_cpu.NMI.Check())
{
first = next = new Clock.ClockEntryRep(new InterruptOp(_cpu, 0xfffa), 7);
}
else if (_cpu.IRQ.IsRaised && !_cpu.State.P.IrqMask)
{
first = next = new Clock.ClockEntryRep(new InterruptOp(_cpu, 0xfffe), 7);
}
else
{
_cpu.Opcode = _cpu.Memory.Read(_cpu.State.PC.Value);
_cpu.State.PC.Next();
DecodingTable.Entry decoded = DecodingTable.Opcodes[_cpu.Opcode];
DecodeAddressOp addrOp = new DecodeAddressOp(_cpu, decoded._addressing);
ExecuteOpcodeOp execOp = new ExecuteOpcodeOp(_cpu, decoded._instruction, decoded._timing._prolongOnPageCross);
byte addrTime = decoded._timing._addressingTime;
byte execTime = decoded._timing._execTime;
first = addrTime < 2 ? new Clock.ClockEntry(addrOp, true) : new Clock.ClockEntryRep(addrOp, addrTime);
first.ComboNext = execTime == 0 || addrTime == 0;
next = first.Next = execTime < 2 ? new Clock.ClockEntry(execOp) : new Clock.ClockEntryRep(execOp, execTime);
sbyte writeCycles = decoded._timing._writeTime;
if (writeCycles >= 0)
{
if (writeCycles < 2)
{
next.ComboNext = writeCycles == 0;
next = next.Next = new Clock.ClockEntry(new WriteResultOp(_cpu));
}
else
{
next = next.Next = new Clock.ClockEntryRep(new Clock.StallOp(), (byte)(writeCycles - 1));
next = next.Next = new Clock.ClockEntry(new WriteResultOp(_cpu));
}
}
}
next.Next = new Clock.ClockEntry(new DecodeOpcodeOp(_cpu));
clock.QueueOps(first, _cpu.Phase);
}
public Clock.ClockEntry CreateOps()
{
_activeOps = new Clock.ClockOp[]
{
new VicGraphReadOp(_vic, GraphReadOp15_53, CheckedActiveGraphLeftOp),
new VicGraphReadOp(_vic, GraphReadOp15_53, UncheckedActiveGraphOp),
new VicGraphReadOp(_vic, GraphReadOp54, CheckedActiveGraphRight1Op),
new VicGraphReadOp(_vic, IdleReadOp55, CheckedActiveGraphRight2Op)
};
_borderOps = new Clock.ClockOp[]
{
new VicGraphReadOp(_vic, GraphReadOp15_53, BorderGraphOp),
new VicGraphReadOp(_vic, GraphReadOp15_53, BorderGraphOp),
new VicGraphReadOp(_vic, GraphReadOp54, BorderGraphOp),
new VicGraphReadOp(_vic, IdleReadOp55, BorderGraphOp)
};
_replacableOps = new Clock.ClockEntry[]
{
new Clock.ClockEntryRep(_activeOps[0], 2),
new Clock.ClockEntryRep(_activeOps[1], 37),
new Clock.ClockEntry(_activeOps[2]),
new Clock.ClockEntry(_activeOps[3]),
};
Clock.ClockEntry first = new Clock.ClockEntry(new VicReadOp(_vic, SpriteReadOp0));
Clock.ClockEntry next = first.Next = new Clock.ClockEntryRep(new VicReadOp(_vic, SpriteReadOp1_9), 9);
next = next.Next = new Clock.ClockEntryRep(new VicNop(_vic), 2);
next = next.Next = new Clock.ClockEntry(new VicGraphOp(_vic, BorderWrapGraphOp));
next = next.Next = new Clock.ClockEntry(new VicGraphReadOp(_vic, RefreshReadOp13, BorderGraphOp));
next = next.Next = new Clock.ClockEntry(new VicGraphReadOp(_vic, RefreshReadOp14, BorderGraphOp));
next = next.Next = _replacableOps[0];
next = next.Next = _replacableOps[1];
next = next.Next = _replacableOps[2];
next = next.Next = _replacableOps[3];
next = next.Next = new Clock.ClockEntry(new VicGraphReadOp(_vic, IdleReadOp56, BorderGraphOp));
next = next.Next = new Clock.ClockEntry(new VicGraphReadOp(_vic, SpriteReadOp57, BorderGraphOp));
next = next.Next = new Clock.ClockEntryRep(new VicReadOp(_vic, SpriteReadOp58_61), 4);
next = next.Next = new Clock.ClockEntry(new VicReadOp62(_vic, SpriteReadOp62));
next.Next = first;
return first;
}
