Need help with converting a 122 key terminal Model-M to USB

@wendell (Amber prompted me to create a thread tagging you)

Need help with converting a 122 key terminal Model-M to USB. It is model 1394167. I like the mstar, but there is a catch: I live in NL, and shipping costs from the US are excruciating. I found a Swiss person (GitHub - nuess0r/ctrl-M: Replacement controller for the famous IBM Model M keyboard based on the STM32F072 microcontroller. Supported by QMK.) with the ctrl-M product, also QMK based but a slightly different pill, the STM32F072. It’s sold by tindie with much more agreeable shipping fees ( https://www.tindie.com/products/brain4free/ctrl-m/ )

I am considering to try and make an amalgamation of the two, but: are the design files for the level1tech version of the Classic controller possibly available? I looked at ESR’s pages (Eric S. Raymond / M-Star · GitLab) but they looked very MiniM centric. Being a noob at this I struggle to make heads or tails from the ESR pages, and I keep tripping over spelling errors, making me unsure what is reliable and what not.

there’s a qmk template for the f122 as part of the mstar thing in certain can be adapted for your use case

qmk has a matrix mapping mode so maybe you can just run that and it tells you what you need?