1.-6. Exceptions with the same priority as the priority of program­
interruption conditions for the general case.
7.A Access exceptions for second instruction halfword.
7.B.1 Operation exception if the dual-address-space facility is not
installed.
7.B.2 Special-operation exception due to OAT being off, or the ASN­
translation control, bit 12 of control register 14, being
zero.
8.A Trace exceptions.
8.B.1 ASH-translation exceptions (SSAR-ss only).
8.B.2 Secondary-authority exception due to authority-table entry
being outside table (SSAR-ss only).
8.B.3 Addressing exception for access to authority-table entry
(SSAR-ss only).
8.B.4 Secondary-authority exception due to S bit in authority­
table entry being zero (SSAR-ss only). Priority of Execution: SET SECONDARY ASN Chapter 10. Control Instructions 10-43

ASH '" SET SECOHDARY ASH CR14 Instruction ASH First Table '" (accessed for SSAR-ss only)
(x4) (x16) ASH I '" L t--r----r-----r R I AS TO (xl6) ASH Second Table
o CR4 before I '" '" '" '" '" SSAR-cp SSAR-ss (accessed for SSAR-ss only) R
I ATO (x4)
Authority Table
(accessed for
SSAR-ss only) STD lTl CRl before PSTD CR3 __ __ I R P S (SSAR-cp only) '" (SSAR-ss only) CR7 _____ S_S_T_D ______ Secondary-authority exception if S bit is
zero or if table length is exceeded
(SSAR-ss only)
R: Address is real
Execution of SET SECONDARY ASH 10-44 System/370 Principles of Operation '" '" CR3 afterl PKM SASH