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This is a very old computer that belongs to my dad. According to what I've read, it runs CP/M programs with its Z80 processor.
What's special about this one is that it's a modified model by Biotec (an Italian company) for programming pacemakers. The lower half isn't the original part made by Epson but a custom-made one by Biotec, with ports labeled "ECG" (electrocardiogram?) and "Programming head".
Unfortunately, it's missing some screws and other parts, so it's in a bad shape. Luckily, I got it working by putting together a battery holder and a RCA connector with crocodile clips. As far as I can see it has a stepmaker program and the BASIC programming language. I remembered I had stolen a BASIC book from my brother so I managed to make a simple program.
It's working remarkably well for its age, but every time I turn it on there's a different key that doesn't work...
New (4/3/08): I discovered a hidden port behind a sticker, which allows me to use an AC adapter and stop fooling around with clips and connectors. My dad also offered me a powerful battery which fits inside the case, so it'll be really portable. I found the BASIC command for using the printer, and it works! There's barely any paper or ink left, but I can probably find replacements. I'll post what I printed as soon as I get a scanner. I also made some music with the speaker :)
New (8/3/08): I put a battery holder inside, soldering it to some loose power wires. I also made a serial cable with a mini-din connector I bought. I managed to connect it to my computer, and I'll plug it to a cassette recorder (for storing programs) as soon as I find a suitable one.
New (8/3/08): I drew a schematic for one of the Biotec boards, the one with two ROM sockets. It appears to select which of the ROMs to read according to the status of a line coming from the other board. Here's the schematic
