>I had guessed that an APF-authorized but otherwise "ordinary" program
>running with Key 8 would be able to issue an SPKA with an "address" of
>xxxxxx8x in problem state without getting a S0C2.

Whether APF-authorized or not, it can. If your program is getting S0C2, 
then you are most likely not doing what you think you are doing.

A "normal" program running on z/OS will be given control in key 8 with PKM 
of x'00C0' allowing SPKA's between keys 8 and 9 (including 8 to 8):

PSW = 07850000 00000000 00000000 00007000
 -> 0000000000007000'  SPKA    B20A0080  
CR 3 =  00C0xxxx

Or, using the base-displacement form:

PSW = 07850000 00000000 00000000 00007004 
GPR  2 =  FFFFFF80
0000000000007004'  SPKA    B20A2000 
PSW = 07850000 00000000 00000000 00007008
 
Peter Relson
z/OS Core Technology Design


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