IBM System/1

And a real dud, at that. It was to be a family of PDP-11 killers. IBM started to figure out what DEC was all about in the early 1970s, and the S/1 (actually its a "Series", not a "System" - nit) was born. I think they started being deployed in 1976 or so. They were big on intelligent I/O (many of the I/O cards look about as complex as the processor!). In terms of architecture, they were roughly CISCy, like a PDP-11 or 16 bit "S/360". The S/1s turned out to be a huge flop. The PDP-11 didn't die. In the S/1s defense, they were well built. Comparing an S/1 to a PDP-11 shows just how much ahead of DEC IBM was in the field of packaging and integration. Yes, please save the docs. I think a few of us have S/1 hardware (I do, anyway) that may need docs. William Donzelli aw288(a)osfn.org