2 open source boards using the Z8420 PIO
Real designs built with the Z8420 PIO, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
PDS Amstrad
diyelectromusic
73.7 × 70 mm21 parts2LMIT1
PDS ZXSpectrum
73.7 × 70 mm15 parts2LMIT1
The Z8420 PIO in open source designs
The gallery holds 2 open source boards using the Z8420 PIO from 1 GitHub repository; a typical one measures about 73.7 × 70 mm and carries around 18 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is PDS Amstrad by diyelectromusic.
What boards using the Z8420 PIO are built for
Z8420 PIO: common questions
Where can I find a Z8420 PIO reference design?
Each of the 2 boards on this page is a real design using the Z8420 PIO. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
How big is a typical board using the Z8420 PIO?
The median is 73.7 × 70 mm, and 100% are two-layer designs.
What is the most popular open source board using the Z8420 PIO?
By GitHub stars, PDS Amstrad by diyelectromusic, with 1 stars.
Can I simulate one of these boards using the Z8420 PIO before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.