hexahedria

Daniel Johnson's personal fragment of the web

Posts tagged "circuit"

"LEG Processor for Education" at EWME 2016

Last semester, I was part of the Clay Wolkin Fellowship at Harvey Mudd. The fellowship consists of a group of students (mostly Engineering majors, but some CS also) who work on interesting electrical-engineering-focused projects. The project I worked on was the “LEG Processor”, an open-source pipelined processor that implements the ARMv5 instruction set and can boot the Linux kernel (3.19) in simulation. We recently published a paper describing our work in the European Workshop for Microelectronics! You can read the paper here. Or read on for a high-level overview of the work I did on the project.

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Modular Conway’s Game of Life in Logisim

In CS 42 we are starting a unit on low-level computing. As a part of that, we are using a program called Logisim, a program that allows you to build virtual circuits. Of course, after experimenting with it, I had some ideas. So, without further ado, my modular Conway's Game of Life implementation in Logisim!

"Modular"? How so? Basically, I designed the circuit as a grid of cells. Each cell is a square subcircuit, and they connect to each other on the sides. There is also a clock signal that is propagated through the grid to synchronize the updates.

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