There are numerous updates in the old AMSAT Newsletters with details about it, but I think this Byte article probably sums up the project best.
https://archive.org/details/byte-magazine-1979-09
73,
Paul, N8HM
On Thu, Apr 30, 2020 at 22:49 Doug Faunt N6TQS +1-510-717-1197 via AMSAT-BB amsat-bb@amsat.org wrote:
Back in the day, there was an Amsat project to make a ham oriented S100 bus board. I think it had a RTTY interface, and some other things. Does anyone recall more details? 73, Doug _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb