Over in On the origins of Personal Computing I mentioned the remarkable and unique MCM/70, from 1973, with a one-line display, an 8008 inside, and an APL interpreter as the primary interface and application. And one or two integral cassette drives, used as swap devices as well as filestore, and to which the whole machine state is saved when shutting down… well, the amazing news is that there’s now an emulator for this machine, which includes the ROMs, allowing investigation of what must be a remarkable piece of programming.
Let’s just pause for a video, where we notice that memory is so tight the display memory is used as scratchpad during execution:
And note that MCM is mentioned already in a few old threads here:
I found the emulator by chance:
To obtain a copy of the emulator, please contact York University Computer museum at museum at cse.yorku.ca
Having sent my enquiry, I was delighted to get a reply, with an attached tar file, from Zbigniew Stachniak himself, who wrote the book on MCM/70 - see below.