ZMan, You not the only one, I had to look up EPSW, hadn't used it before
Scott ford www.identityforge.com from my IPAD 'Infinite wisdom through infinite means' > On Dec 27, 2013, at 11:13 PM, zMan <[email protected]> wrote: > > Yeah, true. I guess having grown up worried more about memory than CPU, I'd > never have chosen that route, but it's clearly equally valid. Or maybe N > R14,=X'00F00000' and then CLM R14,B'0100',=X'80'... whee, I saved 3 bytes! > (Also not sure whether two RS instructions are faster than two shifts and a > CFI. Of course, now we're *really* discussing minutiae...) (Plus, hey, any > time you get to use a sexy new instruction like CFI, a kitten gets its > wings. Or something.) > > Anyway, thanks. I wanted to be sure I wasn't missing some other, more > obvious approach that Everyone Knows (but me)! > > >> On Fri, Dec 27, 2013 at 10:26 PM, John Gilmore <[email protected]> wrote: >> >> You can avoid shifts and save one instruction by ANDing the PSW value >> with x'00F00000' and testing the result for equality with >> x'00800000', but there is not much fat to be squeezed out of what you >> are doing now. >> >> John Gilmore, Ashland, MA 01721 - USA >> >> ---------------------------------------------------------------------- >> For IBM-MAIN subscribe / signoff / archive access instructions, >> send email to [email protected] with the message: INFO IBM-MAIN >> > > > > -- > zMan -- "I've got a mainframe and I'm not afraid to use it" > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
