5 open source boards using the 27C64
Real designs built with the 27C64, 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.
TI99 22
danwerner21
350 × 224.3 mm242 parts2LNo license50
Dragon64
333.2 × 205.9 mm220 parts2LNo license34
ESP32TI99 22
244 × 244 mm257 parts4LNo license4
Backup
333.2 × 205.9 mm218 parts2LNo license34
Backup1
333.2 × 205.9 mm218 parts2LNo license34
The 27C64 in open source designs
The gallery holds 5 open source boards using the 27C64 from 3 GitHub repositories; a typical one measures about 333.2 × 205.9 mm and carries around 220 components.
80% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is TI99 22 by danwerner21.
Parts used alongside the 27C64
Microcontrollers on boards using the 27C64
What boards using the 27C64 are built for
27C64: common questions
Where can I find a 27C64 reference design?
Each of the 5 boards on this page is a real design using the 27C64. 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 27C64?
The 74LS00, 74LS04, 74LS138, 74LS244 and 74LS03 appear in the most repositories here.
Which microcontrollers do boards using the 27C64 use?
Most are built on ESP32 (1).
How big is a typical board using the 27C64?
The median is 333.2 × 205.9 mm, and 80% are two-layer designs.
What is the most popular open source board using the 27C64?
By GitHub stars, TI99 22 by danwerner21, with 50 stars.
Can I simulate one of these boards using the 27C64 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.