In <[email protected]>, on 04/29/2013
at 12:18 PM, Anne & Lynn Wheeler <[email protected]> said:
>the claim has been made that 1/3rd of processor cycles for 370
>instruction emulation went to checking for whether instruction
>already fetched/decoded in the pipeline has been modified.
>this applies to avg. number of x86 instructions for 370 instruction
>emulation as well as the older ibm 370 microcoded machines.
It may be true for simulation of the S/370 on Intel, but a real
370/168 handled it in the I-unit.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
Atid/2 <http://patriot.net/~shmuel>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
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