5 open source boards using the 8259
Real designs built with the 8259, 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.
Chameleon schematics
Seequa-Computer-Preservation
435 × 317.5 mm361 parts2LNo license3
Tiny-8088
nkeck720
147.3 × 128.3 mm54 parts2LGPL-2.03
8086
homebrew8088
216.4 × 106.7 mm42 parts2LGPL-3.027
8088
132 × 73.9 mm22 parts2LGPL-3.0238
80188
143 × 73.9 mm18 parts2LGPL-3.0238
The 8259 in open source designs
The gallery holds 5 open source boards using the 8259 from 4 GitHub repositories; a typical one measures about 147.3 × 106.7 mm and carries around 42 components.
100% are two-layer designs, the rest use four layers or more, and 80% carry an open source license.
The most starred is 8088 by homebrew8088.
8259: common questions
Where can I find a 8259 reference design?
Each of the 5 boards on this page is a real design using the 8259. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the 8259?
The 8284, 74LS245, 8253, 7400 and 74LS04 appear in the most repositories here.
How big is a typical board using the 8259?
The median is 147.3 × 106.7 mm, and 100% are two-layer designs.
What is the most popular open source board using the 8259?
By GitHub stars, 8088 by homebrew8088, with 238 stars.
Can I simulate one of these boards using the 8259 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.