I don't remember a ripple button, but I recall a clear button and a ripple CE utility. The ripple utility was designed to test core, not just clear it. I don't recall whether IBM ever wrote anything to test semiconductor memory.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Lester, Bob <bles...@invesco.com> Sent: Friday, July 19, 2019 6:16 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Friday! Hi All, Who remembers how to "ripple core" on a 360/75J? Back in the day, I was taught that it "wrote un-digit zeros" to all storage locations (main + LCS) on the box. If course, an IPL was required after this was done. Not sure how widely it was used. A simple yes or no is OK if you cannot provide details. 😊 Thanks! BobL **************************************************************** Confidentiality Note: The information contained in this message, and any attachments, may contain confidential and/or privileged material. It is intended solely for the person(s) or entity to which it is addressed. Any review, retransmission, dissemination, or taking of any action in reliance upon this information by persons or entities other than the intended recipient(s) is prohibited. If you received this in error, please contact the sender and delete the material from any device. **************************************************************** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
