On Sat, 23 Aug 2008 00:06:28 -0400, John W Kennedy wrote: > Martin Gregorie wrote: >> Not necessarily. An awful lot of CPU cycles were used before microcode >> was introduced. Mainframes and minis designed before about 1970 didn't >> use or need it > > No, most S/360s used microcode.
I never used an S/360. I thought microcode came into the IBM world with S/370 and Future Series (which later reappeared as the AS/400, which I did use). Didn't the S/370 load its microcode off an 8 inch floppy? -- martin@ | Martin Gregorie gregorie. | Essex, UK org | -- http://mail.python.org/mailman/listinfo/python-list
