Joe wrote: I can do little more than repeat the message I sent on the subject a few months ago: John R. Keys Jr. Wrote: [...] I'm sure you'll have fun with all your finds, but this is the one that caught my eye. Last week (?) someone was asking questions along the lines of what the heck does one do with an IBM 3278? The answer is, plug it into this. Neither is much use without the other! I suggest the two of you get together over this... The 3274 is called a "terminal controller". It is not per se a computer, although I think it may have had microprocessors and things in it. The floppy drives were for saving and loading configuration data (along the lines of Port 1 a 3278, port 2 is a 3299 with 8 3278s hung off it, port 3 is a printer etc...) It multiplexes terminals and things to an IBM mainframe channel. While the 3278 and its relatives use the IBM SNA protocol over 93 ohm co-ax, the 3274 can AFAIK connect over an ordinary serial line. In which case all you need to do is write drivers for whatever machine you choose as the host... Happy hacking! Philip.