The Xerox 16/8 is a desktop CPM Computer of the mid 1980s vintage. It has both 8 and 16 bit processors in the cabinet. I believe the original computer was based on the UK Big Board design. The 16 bit processor is on a propriatory add on card. It runs CPM-80 & CPM-86. If I remember right it will run an early version of MS-DOS. It has been years since I have run mine. My 2nd computer was a Xerox 820, an earlier model. I was delighted when I got a 16/8. It uses external drives which you may not have gotten. The disks availiable were dual 8" floppys, dual 5" floppys or a 8" Floppy and 8" HD. You could use only one set at a time. Brian of Emerald Microware (business no longer in existance) in Beaverton, Oregon made a data sharer that would alow you to hook up both 5 & 8" drives at the same time. He supported this family of computers for many years. It was a nice machine. There are two styles of keyboards, the original which is bulky and a low profile which uses a different ROM. The basic computer consists of three pieces, the Monitor/CPU, a keyboard and a drive cabinet. I have docs, drives, cpus and parts if you want to communicate with me directly. Paxton Whoagiii(a)aol.com