Digital Electronics - CodeSurferDev Blog

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Digital Electronics

A collection of 5 posts

DIY 8 Bit Computer Series - Part 2

Digital Electronics Featured

DIY 8 Bit Computer Series - Part 2

In this second post chronicling the design and build of an 8 bit microcomputer from scratch, the resistors that were previously being used to simulate a memory are replaced with an actual memory chip. Although there are modern options available for programmable memories that are much easier to program and

ZX81/TIMEX-SINCLAIR 1000 Composite Video Mod Part 2 - Plus Troubleshooting

Digital Electronics Featured

ZX81/TIMEX-SINCLAIR 1000 Composite Video Mod Part 2 - Plus Troubleshooting

Part 1 of this two part series documents one possible way to perform a DIY composite video mod on a ZX81/TS1000 with the newer ULA 2C210E, as opposed to the older ULA 2C184E. The main difference between the two versions of the ULAs as far as video output goes

ZX81/TIMEX-SINCLAIR 1000 Composite Video Mod Part 1

ZX81/TIMEX-SINCLAIR 1000 Composite Video Mod Part 1

This is the first of a two part post that will start a series on modding the Sinclair ZX81 and the Timex-Sinclair 1000. The first mod being RF to composite video.

DIY 8 Bit Computer Series - Part 1

Digital Electronics

DIY 8 Bit Computer Series - Part 1

This is the first post in a series that I plan to publish chronicling my ongoing experiences developing a retro 8 bit computer from scratch. My hope is that others will follow this series and realize that with all the information available on the Internet these days, they can do

PLD Series - Part 1 - Programmed My First GAL

Digital Electronics

PLD Series - Part 1 - Programmed My First GAL

This is the first post in a series I plan to write on Programmable Logic Devices (PLD). By following this series the reader should get a basic understanding of the different types of PLDs and how to start using them in their own projects. This post will cover the basics