On Mon, 22 Jul 2019 19:46:05 +0000, Lester, Bob wrote: > > This was (in 1976/77) a procedure where various front panel toggle > switched were toggled, and a button was pushed. This caused the machine > panel lights to flash in a pattern. It was called "rippling core" and was > to invalidate any data left prior to IPL'ing the machine with a different > environment. > Was this actually loading a small program from the toggle switches?
Do you remember the model #? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
