3 open source boards using the 8259A-2
Real designs built with the 8259A-2, 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.
AVR/ArduinoM8SBC-486
maniekx86
150 × 150 mm123 parts4LNo license253- schematic only · 207 parts
DeskPro386 16
breadboardinglabs
207 partsMIT4 
AVR/ArduinoMDA80486SBC Final
mattheeewahn
150 × 150 mm123 parts4LGPL-3.01
The 8259A-2 in open source designs
The gallery holds 3 open source boards using the 8259A-2 from 3 GitHub repositories; a typical one measures about 150 × 150 mm and carries around 123 components.
100% use four copper layers or more, and 67% carry an open source license.
The most starred is M8SBC-486 by maniekx86.
Parts used alongside the 8259A-2
Microcontrollers on boards using the 8259A-2
What boards using the 8259A-2 are built for
8259A-2: common questions
Where can I find a 8259A-2 reference design?
Each of the 3 boards on this page is a real design using the 8259A-2. 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 8259A-2?
The 74LS245, 8254, 486Socket, 74LS573 and AMS1117 appear in the most repositories here.
Which microcontrollers do boards using the 8259A-2 use?
Most are built on AVR/Arduino (2).
How big is a typical board using the 8259A-2?
The median is 150 × 150 mm, and 0% are two-layer designs.
What is the most popular open source board using the 8259A-2?
By GitHub stars, M8SBC-486 by maniekx86, with 253 stars.
Can I simulate one of these boards using the 8259A-2 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.