You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
28 lines
647 B
28 lines
647 B
#指令抽象类
|
|
# 一条指令的实现应当继承这个类，并重写四个方法
|
|
class Instruction:
|
|
#指令译码阶段
|
|
def instrDecode(self):
|
|
pass
|
|
|
|
#运算阶段
|
|
def execute(self):
|
|
pass
|
|
|
|
#访问存储器阶段
|
|
def memAccess(self):
|
|
pass
|
|
|
|
#写回寄存器阶段
|
|
def writeBack(self):
|
|
pass
|
|
|
|
def __init__(self, hw):
|
|
self.hw = hw #指令关联的硬件结构
|
|
self.stages = [
|
|
self.instrDecode,
|
|
self.execute,
|
|
self.memAccess,
|
|
self.writeBack
|
|
] #每条指令包含四个阶段
|