If anybody ever gets the chance to go to SHARE you absolutely must take in one of Johns mainframe history sessions. The "50 years of the mainframe" session at Pittsburgh was one of the best I attended all week. Full of interesting trivia and lots of fun.

On 18/08/2014 7:17 PM, John Eells wrote:
Skip Robinson wrote:
<snip>
BTW isn't 'IML' Initial Microcode Load?

In the late 70's this was termed "IMPL," for initial microprogram load. It was later shortened to "IML." I never paid attention to whether "microprogram" sometimes became "microcode" in the acronym, or in which contexts. Both terms remain in our books, and both are defined here:

http://www-01.ibm.com/software/globalization/terminology/i.html

As you can see, both "microcode" and "microprogram" seem to be in use for the "M" in "IML."


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