Lab 4: Hex Calculator

GitHub

https://github.com/michaeldelcid/dsd/tree/master/Lab4

Introduction

The purpose of this lab is to program the FPGA to function as a simple hexadecimal calculator capable of adding and subtracting four-digit hexadecimal numbers. A 16-button keypad will be used to input hex numbers and the push0buttons on the NexysA7 board will act as operation buttons (+, -, =, and clear). The results will be displayed on the four 7-segment displays on the NexysA7 board.

Keypad Interface

The lab will be using a 16-button keypad module PmodKYPD which plugs into one of the PMOD connectors on the NexysA7 board. Pictures of the keypad and documentation are shown below.

Synthesis, Implementation, Generate Bitstream

Ran synthesis and implementation. A closed up view of the implemented design is shown above.

I had trouble getting a PMOD keypad because of the corona virus pandemic but I was able to successfully run synthesis, implementation, and generate bit stream.