32-bit MIPS processors

This repository is meant to provide:

• a 32-bit implementation of a single-cycle MIPS processor in VHDL;
• a 32-bit implementation of a multi-cycle MIPS processor in VHDL.

Executable instructions

Both the implementations are able to execute the following subset of the original MIPS instruction set:

• register arithmetic-logical instructions (add, sub, and, or, nor, and xor),
• immediate arithmetic-logical instructions (addi, andi, and ori),
• shift instructions (sll and srl),
• set instructions (slt and slti),
• branch and jump instructions (beq, bne, and j),
• memory instructions (lw and sw).

Note

The memory modules in both the implementations contain some initial values representing a test program, though it is possible to define your own program instructions (see the MIPS32 instruction encoder).

License

This project is licensed under the MIT License - see the LICENSE file for details.