public void Dispatch(Cpu8086 cpu, OpCodeManager.Instruction instruction)
{
cpu.SetRegister(Register.IP, cpu.Pop());
cpu.SetRegister(Register.CS, cpu.Pop());
cpu.SetRegister(Register.FLAGS, cpu.Pop());
//cpu._interruptStack.Pop();
}
public void Dispatch(Cpu8086 cpu, OpCodeManager.Instruction instruction)
{
switch (instruction.Argument1)
{
case (int)Register.AX:
case (int)Register.CX:
case (int)Register.DX:
case (int)Register.BX:
case (int)Register.SP:
case (int)Register.BP:
case (int)Register.SI:
case (int)Register.DI:
case (int)Register.IP:
case (int)Register.CS:
case (int)Register.DS:
case (int)Register.ES:
case (int)Register.SS:
//case unchecked((int)Register.FLAGS):
cpu.SetRegister((Register)instruction.Argument1, cpu.Pop());
break;
case unchecked ((int)Register.FLAGS):
cpu.SetRegister((Register)instruction.Argument1, cpu.Pop());
break;
case OpCodeManager.ARG_DEREFERENCE:
case OpCodeManager.ARG_MEMORY:
var address = InstructionHelper.GetInstructionRealAddress(cpu, instruction.SegmentPrefix, instruction.Argument1, instruction.Argument1Value, instruction.Argument1Displacement);
cpu.WriteU16(address, cpu.Pop());
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public void Dispatch(Cpu8086 cpu, OpCodeManager.Instruction instruction)
{
cpu.SetRegister(Register.IP, cpu.Pop());
cpu.SetRegister(Register.CS, cpu.Pop());
if (instruction.Argument1 == OpCodeManager.ARG_CONSTANT)
{
cpu.SetRegister(Register.SP, (ushort)(cpu.GetRegister(Register.SP) + instruction.Argument1Value));
}
else
{
Debug.Assert(instruction.Argument1 == OpCodeManager.ARG_NONE);
}
}