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Computer Architecture Review

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오랜만에 컴퓨터 구조에서 배운 내용을 조금 복습해보며 감을 잡기 위함

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컴퓨터가 코드를 처리하는 과정

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  1. Read Code
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  2. Assembly 변환
    3. \n
  3. CPU에서 실행
    4. \n
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CPU에서 하나의 명령(Ex) Add)을 실행하는 과정 (5단계)

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  1. IF: Instruction Fetch (명령어 가져오기)
    2. \n
  2. ID: Instruction Decode (무슨 명령어인지)
    3. \n
  3. EX: Execute / Adress calculation (명령 실행 or 접근할 주소 계산)
    4. \n
  4. MEM: Access Memory (메모리에 접근)
    5. \n
  5. WB: Write (변수 업데이트)
    6. \n
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위의 5단계가 CPU (Single Cycle Datapath)에서 실행되는 과정

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layout: post\ntitle: “ComputerArchitecture Review”\ndate: 2021-01-23 03:15:30 +300\nimage: x1.png\ntags: open-source

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Pipeline

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Hazard

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필요한 데이터가 register나 memory에 write 될 때까지 기다리지 않고, internal buffer로부터 읽어서 Hazard를 해결하는 방법

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Hazard를 피할 수 없는 경우 아무 명령을 처리하지 않는 nop (No-operation) 를 넣음으로써 Data Forwarding을 할 수 있도록 싱크를 맞춰주는 방법

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