Peter Relson wrote: >The code is checking 7 bytes at location x'6B' through x'71'. >As of z/OS 2.5 that area is all zeroes.
>Prior to z/OS 2.5 for any z/Architecture IPL it is not. The same is >true for location 0 and others. >Since none of them are programming interfaces (such that changing the >value is not something we would feel a need to disclose), I doubt that >anyone at IBM would try to list them for you. But if you have access >to both a release before 2.5 and a release 2.5 or later, you could >probably figure it out with not much difficulty. >Someone asked about "IPL PSW". These 7 bytes have nothing to do with >any IPL PSW. And the PSW's used for IPL are not preserved in low >storage for later viewing. That was me, Peter. And I know you grok this far better than I do, so I'm not arguing, just trying to understand. I see this in the PofOp: -------- Assigned Storage Locations in the z/Architecture Architectural Mode 0-7 . . . . . . . . . . . . . . . . . . . . . . . . Absolute Address IPL PSW: The first eight bytes read during a CCW-type initial-program-loading (IPL) initial read operation are stored at locations 0-7. -------- That's what I was talking about re the IPL PSW. Thanks, ...phsiii ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
