<snip> R15 has bit 63 on I would assume </snip> Yes, reg 15 would be set up to be suitable for use by BSM 0,15 (AKA "pointer-defined") hence having bit 63 on when you want the target to be AMODE 64 (as you would need for an address above 2G).
Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
