Verilog code for a 32-bit pipelined MIPS processor.

Datapath diagram with control signals is included in PDF format.

Combination of gate-level, dataflow and behavioural modelling.

Remarks:

• Instruction Memory for 32 32-bit MIPS instructions.
• 32 32-bit Data Memory locations.
• Instruction Memory consisting of arithmetic, logical, branch, jump, and memory-access instructions. Immediate arguments and argument registers are hard-coded.
• TRAP destination is generally OS-specific, and has been left to zero here.
• 5-stage pipelining; stages are:
  • Instruction Fetch (IF)
  • Instruction Decode (ID)
  • Execute (EX)
  • Memory Access (MEM)
  • Writeback (WB)
• Data Forwarding Unit to partially resolve hazards in R-type instructions.
• Hazard Detection Unit to insert stalls (nop cycles) wherever required.