☞ RISC-V CPU

2022 NTU CSIE Computer Architecture Lab 2

• Features:
  • off-chip data memory + 2-way associative cache
    • Cache Size: 16 KB
    • LRU Replacement policy
    • Cache Block/Line size: 32 bytes
    • RW Alignment: align to 8 bytes
    • Write Hit/Miss Policy: write back, write allocate
    • Bit-length: cache tag = 23, cache idx = 4, block offset = 5
  • on-chip instruction memory
  • 5-stage pipelined pipeline
• Supported instructions: AND, XOR, SLL, ADD, SUB, MUL, ADDI, SRAI, LW, SW, BEQ
• Env: Mac with Intel(R) Core(TM) i5-8257U CPU @ 1.40GHz ,Vscode ,iverilog
• Additional specs:
  • 32-bit instruction
  • support Forwarding, Hazard Detection
  • 10-cycle memory latency
• Compile (using lab2 testbench, namely testbench.v)

  cd codes # make sure you're at codes directory level
  iverilog -o ./testbench.vvp ./testbench.v
  vvp ./CPU/testbench.vvp
  // outputs: output_{}.txt, cache_{}.txt for register/dmem states and cache history repectively.