Delete comment from: Ken Shirriff's blog
At the University of Missouri, Rolla (now MST in Rolla), we had a 360/50. It ran a subsystem called CPS, which was a firmware extension supported timeshare system, as well as running as a 360/50 running MVT 21 and HASP.
The CPS system included an outboard memory system called LCS (don't have a number), which had 1mb of memory, and when CPS was up, was used to support the users.
CPS could run with the MVT system active.
Our system had 512K of memory in the main box.
Two unique things about the 360/50 at UMR. It was supposedly the only non power of 2 system ever built up by IBM which could run as such. 1.5mb was not a standard for 360 memory sizes.
And supposedly, it was also the only non leased 50 at the time. IBM sold the system during the development of the 360/50 and shipped a 360/40 to the campus in 1969 or 1970 which was used for around a year till the /50 could be delivered to replace it.
Jim Stephens
Jan 17, 2020, 6:58:34 PM
Posted to Iconic consoles of the IBM System/360 mainframes, 55 years old