4 open source boards using the MC6840
Real designs built with the MC6840, 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.
6809 Plus EPROM Version
roberto314
248.9 × 139.7 mm165 parts2LBSD-2-Clause1
GIMIX 6809 CPU Plus
248.9 × 139.7 mm165 parts2LBSD-2-Clause1
MicroKit09Serial
electrickery
62.2 × 49.5 mm17 parts2LNo license1
GIMIX Ghost 6800
228.6 × 142.2 mm74 parts2LBSD-2-Clause1
The MC6840 in open source designs
The gallery holds 4 open source boards using the MC6840 from 2 GitHub repositories; a typical one measures about 238.8 × 139.7 mm and carries around 120 components.
100% are two-layer designs, the rest use four layers or more, and 75% carry an open source license.
The most starred is GIMIX 6809 CPU Plus by roberto314.
MC6840: common questions
Where can I find a MC6840 reference design?
Each of the 4 boards on this page is a real design using the MC6840. 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 MC6840?
The median is 238.8 × 139.7 mm, and 100% are two-layer designs.
What is the most popular open source board using the MC6840?
By GitHub stars, GIMIX 6809 CPU Plus by roberto314, with 1 stars.
Can I simulate one of these boards using the MC6840 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.