At 06:50 AM 8/7/2006, Jim Bohnsack wrote:
As a "junior assistant probationery trainee IBM systems engineer" in
a Chicago branch office, I worked on a project that needed a lot of
data center machine time. I ran a benchmark for a custom at the IBM
Des Plaines data center and used a 360/40 that had an unusual toggle
switch on the front panel with the labeling on the switch being
"virtual"/"real". It was a few years before I understood what that
meant. At that time, also, the downtown Chicago IBM data center had
a 360/67 which I always used in 360/65 mode.
Jim
That 360/40, serial number 2040-x0002, made two outstanding
contributions to IBM. After serving as the first 360 testbed for CP
(CP/40), it went on to be the primary development machine for CICS!
Bob Shair
Open Systems Consulting
Champaign, Illinois
