2 open source boards using the TMS9901
Real designs built with the TMS9901, 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
ESP32TI99 22
244 × 244 mm257 parts4LNo license4
The TMS9901 in open source designs
The gallery holds 2 open source boards using the TMS9901 from 2 GitHub repositories; a typical one measures about 297 × 234.2 mm and carries around 250 components.
50% 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 TMS9901
Microcontrollers on boards using the TMS9901
What boards using the TMS9901 are built for
TMS9901: common questions
Where can I find a TMS9901 reference design?
Each of the 2 boards on this page is a real design using the TMS9901. 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 TMS9901?
The 27C64, 74LS00, 74LS03, 74LS04 and 74LS08 appear in the most repositories here.
Which microcontrollers do boards using the TMS9901 use?
Most are built on ESP32 (1).
How big is a typical board using the TMS9901?
The median is 297 × 234.2 mm, and 50% are two-layer designs.
What is the most popular open source board using the TMS9901?
By GitHub stars, TI99 22 by danwerner21, with 50 stars.
Can I simulate one of these boards using the TMS9901 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.