4 open source boards using the SC77526
Real designs built with the SC77526, 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.
TRS-80 Color Computer 3
qbancoffee
280 × 156.3 mm205 parts2LGPL-3.040
TRS-80 Color Computer 2 NTSC ( 26-3134B & 26-3136B)
230 × 170 mm150 parts2LGPL-3.040
TRS-80 Color Computer 3
baldengineer
280 × 155.3 mm204 parts2LCC-BY-4.0442
TRS-80 Color Computer 2 NTSC ( 26-3134B & 26-3136B)
230 × 170 mm150 parts2LCC-BY-4.0442
The SC77526 in open source designs
The gallery holds 4 open source boards using the SC77526 from 2 GitHub repositories; a typical one measures about 255 × 163.1 mm and carries around 177 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is TRS-80 Color Computer 3 by baldengineer.
Parts used alongside the SC77526
What boards using the SC77526 are built for
SC77526: common questions
Where can I find a SC77526 reference design?
Each of the 4 boards on this page is a real design using the SC77526. 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 SC77526?
The 27C128, 27C256, 6821, 74LS02 and 74LS04 appear in the most repositories here.
How big is a typical board using the SC77526?
The median is 255 × 163.1 mm, and 100% are two-layer designs.
What is the most popular open source board using the SC77526?
By GitHub stars, TRS-80 Color Computer 3 by baldengineer, with 442 stars.
Can I simulate one of these boards using the SC77526 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.