ITT 3290 / Regnecentrallen 850 Z80 CP/M system


This system was badged up as an ITT3290 but was originally produced as a Regnecentrallen 850. It's a CP/M box with a Z80 processor. I picked it up from ITT about 14 years ago and used it for about six years for Z80 software development. I added the optional Z80 PIO chip to give it a centronics parallel port which I used to drive a home-made eprom programmer and for developing software to drive L.C.D. displays for another of my projects.