====================================== -----Original Message----- From: "Bob Shannon" <[EMAIL PROTECTED]> Sent: 7/24/2006 9:55 AM To: "[email protected]" <[email protected]> Subject: Re: Program Call (PC) routine in AMODE(64)
>The main issue is my PC service routines are called by anyone on old boxes >or newer boxes. >If that caller happens to be an AMODE(64) routine, they must perform z/OS >1.8 test. If they try to call my PC routine in AMODE(64), they will abend >unless I have set the ETDEAM bit. >So my callers are stuck with adding logic to switch amodes and test CVT >flags. sigh... Unless your PC routine will process data above the bar, there is no need to execute in 64-bit addressing mode. What Peter Relson suggested for your PC routine to test the architectural capability of the machine and to set the addressing mode accordingly. There is no need for callers of the PC routine to do anything special. Bob Shannon Rocket Software ====================================== If my callers are AMODE(64) and my PC is not, they will get a program check on the PC instruction. Jeffrey D. Smith Farsight Systems Corporation 24 BURLINGTON DR LONGMONT, CO 80501 303-774-9381 direct 303-709-8153 cell 303-484-6170 fax ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
