> I think it is the new instructions that don't use base or index > registers, instead a +/- 32K offset.
> > functional equivalent, and why you think they are faster? > > AMODE does not affect performance. Can you explain > > which instructions you think are faster than some Relative addressing instructions were introduced in ESA/390, on the 9672 Generation 2 processors. They are not in general faster than their base/index addressing counterparts, as long as Address Generation Interlocks are avoided by loading registers far enough in advance of their use as a base or index register. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
