Supercon 2023: Nathan Jones Looks Inside the Voja4 Badge

The Hackaday Supercon 2022 badge (affectionately dubbed the “Voja4”) was a wonder of low-level computing, implementing a working 4-bit computer with over 200 LEDs to show its internal state.
In this talk, Nathan aims to reignite your fascination with this little device by sharing with you how it works, what makes it a computer (given it’s lilliputian specifications), and a plethora of fun projects you can build with it once we’re done.
Slide download:
drive.google.com/file/d/1l2Lm...
Read the story on Hackaday:
hackaday.com/2024/05/20/super...

[@kevincozens6837]

As mentioned there are trade-offs one has to make. When the set of flags was mentioned I immediately recognized there was no mention of a negative flag. It would have been possible to use the middle four bits of opcode 0 to have several pages of 16 instructions so some useful ones could be added but, as was pointed out, it would add to the complexity of the CPU design and cost.