> Are you sure you aren't talking about the Systems Measurement Instrument > (SMI)? That was the only IBM hardware monitor available during the S360 era > as far as I know. It had a number of probes that you attached to various > points in the s/360. The SMI had a plug panel board that you wired up to get > the data from the probes into accumulators. Once the newer s/370 boxes got > a service processor, the hardware instrumentation became part of the service > processor, and the SMI became obsolete. The service processor based > instrumentation remained as an IBM lab tool until fairly recently when it was > made available to customers, and documented.
I think the 2955 FE/DAU (Field Engineering / Data Access Unit) was around for the very tail end of the S/360 era. -- Will ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
