On Sat, Oct 23, 2021 at 7:41 PM Paul Gilmartin <[email protected]> wrote: > > On Sat, 23 Oct 2021 11:33:33 -0500, Joe Monk wrote: > > > >I know this will probably be an easy answer for somebody... but I dont deal > >with AM64 much. > > > AMD64? <https://en.wikipedia.org/wiki/X86-64> > > >If Im in AM64 and I load an index register with -1, does the machine ignore > >the sign when using it in an RX instruction such as STC? > > > >I know it ignores the sign in AM24/31... > > > I'm not familiar with the AMD64 architecture. But I know from experience that > on the z, negative index values work better than many programmers expect > or even believe, both at assembly time and in execution; in all addressing > modes. > AMD64 is an extension to 80386 architecture. Intel was going with the Itanium, but they licensed AMDs extensions. Usually known as x86-64.
-- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
