graph TD
  CPU[Top-Level CPU]
  CPU --> IMEM[Instruction Memory]
  CPU --> DMEM[Data Memory]
  CPU --> DATAPATH[Datapath]
  CPU --> CTRL[Control Unit]

  DATAPATH --> PC
  DATAPATH --> ALU
  DATAPATH --> REGFILE[Register File]
  DATAPATH --> IMMGEN[Immediate Generator]
  DATAPATH --> MUXES[MUXes & Branch Logic]