Mario. wrote: > The s/360 was not virtual in matter of frograms that much, but the > cake was a lie. I mean the CPU!!! What I mean by that there was no > native s/360 processor, only native instructions performed by a black > box. In lowest grade mainframes that were sold contained only 8-bit > 'true' CPU, but had all the address bus and data bus and instructins > as the rest of the machines. I think the S360/20 was actually a 16-bit processor. The S360/44 and model 195 cpus were native 360's without microcode. They left instructions out of the /44 to do it, and the 195 was a very complicated machine, so it did the iterative instructions in hardware. This separation allowed some great things > - the mainframes could evolve, but the programs would stay. There was > nothing like that before mainframes. As one japanese bank manager > said: some of the programs written in the 60's still run today! We ran an accounting package at Washington University for which the source code had been lost. All they had was a 1794 object deck, so they installed the 1794 emulator option to all the 360's and maybe even some of the 370's they had so they could continue using this incredibly obsolete package.
Are we far enough off-topic yet? Jon ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
