So I can add the following .
First I already made Norman Rouxel a full member of this Google Group and hoped that he would post something there! Norman, if you read this, how about an introduction :-)
Next, I would comment that the Cromemco C3102 terminal is in fact a rebadged Beehive MicroB DM10. I wonder if the C3102 ROM is standard, or if in the worst case it is marginally different to the Beehive original, but that the Beehive ROM, which might be more available, could instead be sourced and used.
Personally I took my C3102 out all the way from UK to Switzerland but then gave it away when I left (too much to move to another home). Hmm.
Of course it is no substitute for the original physical terminals or getting them working but remember that the PCCOM emulator is a 16 bit MSDOS program that is available in the Github. PCCOM can not only precisely emulate a 3102 terminal but using a small program that you deposit on the Cromix or UNIX side allow text and binary file transfer from host PC to Cromemco