Here is another RAM board I had to solder together myself:
Oooh! I recognised that format! Motorola Exorciser.
1980s - Digital Systems Lab UNSW - three boards fabricated; CPU (sparsely populated; 6809), BBRAM up to 64K, floppy controller. "G CD03"
Did a complete re-write of FLEX09 from disassembly, as well as porting a BASIC09 to true 6809 and enhancing the code for the 6809 "Serge" VDU. If I could get the CPU board working again it just might
be possible to recover the data from the (720K) floppies. Sad.
I really wish I had not "loaned" my 1978, 768 byte SC/MP home-grown 5" cubic micro with the hex keyboard and displays but no
ROM, to some fellow hoping to get him interested in such things. I don't think he was, and it got lost.