r.skoru...@bremultibank.com.pl (R.S.) writes: > BTW: > What about LPARs?
re: http://www.garlic.com/~lynn/2017c.html#80 Great mainframe history(?) http://www.garlic.com/~lynn/2017c.html#81 GREAT presentation on the history of the mainframe http://www.garlic.com/~lynn/2017c.html#82 Great mainframe history(?) http://www.garlic.com/~lynn/2017c.html#83 Great mainframe history(?) http://www.garlic.com/~lynn/2017c.html#84 Great mainframe history(?) http://www.garlic.com/~lynn/2017c.html#85 Great mainframe history(?) http://www.garlic.com/~lynn/2017c.html#86 GREAT presentation on the history of the mainframe http://www.garlic.com/~lynn/2017c.html#87 GREAT presentation on the history of the mainframe FE had failure diagnoses requirement for bootstrap scope'able process. 3081 were inside TCM and no longer scope'able. Process was then a scope'able service processor ... that could be diagnosed/repaired and then the service processor had large number of probes into TCMs and the service processor could be used to diagnose the TCMs. The 3081 service processor was UC microprocessor and everything had to be developed and implemented from scratch. For the 3090, they originally planned on using a 4331 with a highly modified version of vm370/cms release 6 as the service process ... with all service screens done in CMS IOS3270. This was upgraded to a pair of redundant 4361s. The 3092 ("service processor", i.e. pair of 4361s) has requirement for two FBA3370s (even for MVS customers that never supported FBA). ... 3090 announced 12Feb1985 (including requirement for two FBA3370s for 3092 service processor) https://www-03.ibm.com/ibm/history/exhibits/mainframe/mainframe_PP3090.html I had done a lot of work on ECPS microcode assist and later would give talks on the implementation at monthly user group meetings ... and the Amdahl people would talk to me about their hypervisor implementation ... old email from 1980 http://www.garlic.com/~lynn/2006p.html#email801121 mentioned in upthread discussion in this post archived here http://www.garlic.com/~lynn/2017c.html#81 GREAT presentation on the history of the mainframe IBM eventually responds to Amdahl's hypervisor with PR/SM & LPAR on the 3090 (announced 12Feb1985) -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
