VHDL Implementation of MIPS Single Cycle Processor
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Documentation
Scripts
src
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Mnemonics.py
README.md
TODO.txt

README.md

MIPS Single Cycle Processor

Implementation of MIPS Single Cycle Processor using VHDL

Introdution

MIPS Single Cycle Processor is most basic version of Processor.

Important Specifications of this implementation of Processor

  • 65536x32 bit Instruction Register
  • 32x16 bit RegisterFiles
  • 65536x16 bit Data Memory
  • 16 bit Address and Data length
  • 32 bit Instruction Length
  • Basic Instructions includes:
    • ADD, SUB, AND, OR, SLT, ADDI
    • LW, SW
    • BEQ, JUMP
    • PRREG, PRMEM
    • See Documentation\Documentation.pdf for more information.

Some of main features of this code:

  • All basic components are made using Behavioral Architecture and Merged using Structural Architecture in TOP_MODULE.vhd
  • A Documentation will be provided soon for available Instructions and their formats, available registers and Memory etc. Currently, Demo1.fdo in Scripts/ is included as an example. Comment part contains a program which can be written using Python Program. Python Program will automatically generate the Modelsim script file.
  • A Python Program to make script which will initialize IR in ModelSim. It will take a simple instructions as Input. This output script can be run in ModelSim to get Simulation of Processor.

Dependencies:

  • ModelSim (Code is sucessfully tested on Student Edition)
  • Python 2.7 (Just to convert Mnemonics of Instructions to Hexadecimal Instruction which will be used in ModelSim)
  • Xilinx WebPack Design Software(Optional)

Usage

  • Clone this Repository on your local machine (Or download ZIP file and extract it's content)
  • src/ folder contains Source files of the Code. Open MIPS_Single_Cycle.ise using Xilinx. All VHDL Files are available here.
  • Open ModelSim and change current directory to Scripts/.
  • Run do <filename>.fdo to add Intructions in IR.
  • <filename>.fdo can be made using Python Programs available in base folder.

This code is edited using Xilinx ISE 14.7 and simulated using ModelSim SE.