mfkiwl / special-purpose-processor

This project is an implementation of a special-purpose processor that can calculate greatest common multiple (GCM) and least common factor (LCM) for two inputs based on input operation code (Opcode)

Special-Purpose-Processor

Abstract

The main objective of this project was to build a special-purpose processor that can calculate greatest common multiple (GCM) and least common factor (LCM) based on input operation code (opcode). At first I design a datapath and controller for this processor and synchronized them with system clock that implemented using Verilog HDL language. At the end I implement this code on FPGA. (Use Altera DE2-115 board and Cyclone IV EP4CE115 micro-controller)

System Design

For this processor, two main modules must have designed.

• Datapath : Contanis registers, multiplexers, ALU and comparator. Their values are updated according to the next state.
• Controller : Specify the next state based on datapath outputs.

State Machine

In the controller, the next state is specified based on comparator outputs. Three states are avialable for our state machine.

Testbench

The result of the system for calculating GCM and LCM for 6 and 4 inputs is shown below.