public void LSR(OpcodeContainer container, ushort address)
{
switch (container.AddressingMode)
{
case AddressingModes.Accumulator:
CPU.IsCarry = (CPU.Registers.A & 1) == 1;
CPU.Registers.A.Write((byte)(CPU.Registers.A >> 1));
CPU.IsNegative = false;
this.HandleZero(CPU.Registers.A);
break;
default:
var value = CPU.ReadByteAt(address);
CPU.IsCarry = (value & 1) == 1;
byte shiftedValue = (byte)(value >> 1);
// Spin cycle for the work above.
CPU.CycleFinished();
CPU.WriteByteAt(address, shiftedValue);
CPU.IsNegative = false;
this.HandleZero(shiftedValue);
break;
}
}