CMDs = ["eq", 'halt']  # , 'en', 'gt', 'lt', 'ge', 'le']

def CheckArg(operand):
    run = False
    if operand[0].isRegister():
        if operand[1].isRegister():
            run = True
    elif operand[0].isRegister():
        if operand[1].isImmediate():
            run = True
    else:
        raise BadOperand()
    return run

def eq(self, operand):
    if CheckArg(operand) and operand[2].isRegister():
        # 是否等于
        a = operand[0].get()
        b = operand[1].get
        if a == b:
            operand[2].set(1)
        else:
            operand[2].set(0)
            
def halt(self, operand):
    return False