5 open source boards using the ROM
Real designs built with the ROM, 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.
Raemixx500
SukkoPera
365.8 × 254 mm349 parts2LNo license313
ZX-Spectrum-Issue-4B
iansbremner
213.4 × 130.8 mm199 parts2LNo license22
Vectron 65 plus
nickbild
131.1 × 79.4 mm48 parts2LNo license5
ZX-Spectrum-48K-Issue-2
liveboxandy
213.1 × 130.1 mm191 parts2LCC0-1.02
ZX Spectrum 48K
Bambelweeny57
213.1 × 129 mm201 parts2LNo license1
The ROM in open source designs
The gallery holds 5 open source boards using the ROM from 5 GitHub repositories; a typical one measures about 213.1 × 130.1 mm and carries around 199 components.
100% are two-layer designs, the rest use four layers or more, and 20% carry an open source license.
The most starred is Raemixx500 by SukkoPera.
What boards using the ROM are built for
ROM: common questions
Where can I find a ROM reference design?
Each of the 5 boards on this page is a real design using the ROM. 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 ROM?
The 4116, 4532, 74LS157, 74LS32 and LM1889 appear in the most repositories here.
How big is a typical board using the ROM?
The median is 213.1 × 130.1 mm, and 100% are two-layer designs.
What is the most popular open source board using the ROM?
By GitHub stars, Raemixx500 by SukkoPera, with 313 stars.
Can I simulate one of these boards using the ROM 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.