On Wed, 16 Oct 2013 07:56:47 -0400, Micheal Butz wrote:

>I just want to re-iterate reason code 4 associated with a S0C4
>
>When the PSW key bits 8 - 11 don't match the 4K storage key
>
>What is meant by not matching is if the PSW storage key is higher than
>The storage key

No.  Read the Principles of Operation.  "Match" means that the keys are equal.  
PSW key 0 is a special case.

>A program in PSW storage key 0
>
>Can access subpool 0 which is always key 8

Subpools 0-127 are in the key of the requester.  Not always key 8.  This 
information is in Diagnosis:Reference.

--
Tom Marchant

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