3 open source boards using the 71256
Real designs built with the 71256, 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.
Z80DevBoard
dbuchwald
101.6 × 83.8 mm36 parts2LMIT3
6502fastbb
gfoot
195.6 × 165.1 mm30 parts2LUnlicense7
6502fast3cpu
56.5 × 78.7 mm29 parts2LUnlicense7
The 71256 in open source designs
The gallery holds 3 open source boards using the 71256 from 2 GitHub repositories; a typical one measures about 101.6 × 83.8 mm and carries around 30 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is 6502fastbb by gfoot.
What boards using the 71256 are built for
71256: common questions
Where can I find a 71256 reference design?
Each of the 3 boards on this page is a real design using the 71256. 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 71256?
The median is 101.6 × 83.8 mm, and 100% are two-layer designs.
What is the most popular open source board using the 71256?
By GitHub stars, 6502fastbb by gfoot, with 7 stars.
Can I simulate one of these boards using the 71256 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.