On 16/08/2014 10:10 AM, Shmuel Metz , Seymour J. wrote:
No. S/360 used read only storage for microcode until the 360/25, except for a small amount on the 360/85. The term initial micro-program load (IMPL) came in with the S/370; I don't recall when they shortened the abbreviation to IML.
I'd say the early 1980s. Any chance it was around the time of the 4300 series? Cheers, Greg ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
