Paul, There would certainly be no rationale for having AMODE(64) if there were no above-the-bar virtual storage. Since, however, we do have this storage there is sometimes a rationale for using AMODE(64) below the bar, and the ability to invoke a facility from AMODE(64) code is then also valuable. It reduces the need for mode switching and its associated prologues and epilogues, if nothing else.
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
