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Blog Computer Science ZX Spectrum Next Electronics Z80 Homebrew Computer Arduino and Microcontrollers

Latest Video

Memory Banking, DMA and Interrupts - How 8bit computers work

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Computers from the 1980s seemed to be quite limited in their abilities, there was a big drive to make a machine as cheaply as possible. Competition was fierce between manufacturers.

Videos

Zombies! - A Game Written in Z80 Assembly

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Zombies! - A Game Written in Z80 Assembly

Converting a 1980s BASIC type-in game into Z80 Assembly.

The Joy of Sticks - RC2014 Z80 Joystick Kit

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The Joy of Sticks - RC2014 Z80 Joystick Kit

Building and programming a joystick interface for the RC2014 Z80 computer.

Clueless Chillout Coding

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Clueless Chillout Coding

Get comfy and watch as I try to figure out how to write a really simple program the hard way.

Debugging Z80 With Arduino

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Debugging Z80 With Arduino

Let's hook an Arduino up to a 1980s CPU and see what happens!

Pascal programming on a Z80

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Pascal programming on a Z80

Writing fractals on a 7MHz computer with 64K of RAM

Blog Posts

  • 2021 Review

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    How was 2021 for you? I mean, compared to 2020 it was a big improvement, but that’s a pretty low bar to aim for. Let’s focus more on the projects that I completed and what I learned from them.

  • Crap quality USB cables

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    I think I’ve just had a bit of a revelation… USB-C is the best thing ever. Not only because the plug isn’t polarised, but because if you want a true USB-C to USB-C cable there doesn’t appear to be any cheap crappy ones.

  • SMT Soldering and Atari ST Repairs

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    Yesterday I recapped my ST’s PSU which went well, nothing exploded. However when trying to boot the machine it kept crashing, especially when it went to the desktop.

  • Updated Website

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    I’m not a web designer, I find the creative part quite interesting but buggering about with templating languages and having to learn far more JavaScript and CSS than is healthy really puts me off.