>I guess it's stuck at always saving/restoring the AFP regs if the >CVTBFPH flag
not true. You do not have to save/restore if the registers are not currently being saved/restored (because upon their first use, their value will be 0). . IHASTCB byte STCBFPFL bit STCBBFP is on if and only if the AFPRs are being used. IHAPSA byte PSAFPFL bit PSABFP is similarly on (I need to, and will do so going forward, update IHAPSA to indicate that PSAFPFL is an interface, which, as the commentary indicates, is the case for PSABFP and PSAVSS). And, FWIW, there is no reason to check CVTBFPH if running on any support z/OS release. If you happened to have control over the usage "beneath you", then you could take advantage of that knowledge: the requirement is to preserve which could either by by not using or by save/restore. Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
