On Dec 27, 2007, at 6:25 PM, Shmuel Metz (Seymour J.) wrote:
In <[EMAIL PROTECTED]>, on 12/19/2007
at 09:01 PM, Doug Fuerst <[EMAIL PROTECTED]> said:
I fail to understand why anyone would find this "stunning." You
really
didn't think IBM gave away every trade secret did you? When I was at
Intel they weren't giving out the chip masks for the processors
or their
memory chips either. IBM also kept the
existence of the diagnose instruction hidden in obscure places
for many
years before innocently admitting that it existed and was pretty
powerful.
Diagnose was in every edition of Principles of Operation that I've
ever
seen. Or are you referring to documents from before the S/360
announcement?
I could be wrong but I think he is talking about the "undocumented"
"option codes" that a diagnose could *really* do.
Ed
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