public override int Execute(C6502 cpu, byte operand)
{
var state = cpu.State as ExecutionState;
ushort toPush = (ushort)(cpu.State.ProgramCounter - 1);
// TODO: check if this is the correct order. I guess so (DS)
cpu.Push((byte)((toPush >> 8) & 0xFF));
cpu.Push((byte)(toPush & 0xFF));
cpu.State.ProgramCounter = AddressingType.GetAddress(cpu, state.Parameter);
return(6);
}
public override int Execute(C6502 cpu, byte operand)
{
cpu.Push(cpu.State.ProcessorStatus);
return(3);
}
public override int Execute(C6502 cpu, byte operand)
{
cpu.Push(cpu.State.RegA);
return(3);
}