Yelloscope: Fork of Syscomp Design's CGR-201 software
John PeckPublished
I have a few devices from Syscomp Electronic Design that I use for experimenting and debugging. The CGR-201, shown below, is one of these.
Syscomp sadly lost one of its founders, Peter Hiscocks, and won't be releasing any new products. I forked their CircuitGear software (screenshot below) to make some of the changes I wanted, and to start packaging the software as single-file executables for Linux. My fork is here:
https://github.com/johnpeck/yelloscope
The original software
You can download the original software for the CGR-201 here. Note that the Tcl source will run on both Linux and Windows.
Post updates
5-May-2026 — Moving development to github
Development has moved to Github.