Coded this and assembled it:
TEMP CSECT
DC X'90ECD00C'
DC X'188D'
DC X'E3D0021C0017'
DC X'07FE'
END
Loaded it under TEST and listed the instructions:
TEST
l t i l(32)
T
+0 STM R14,R12,12(R13)
+4 LR R8,R13
+6 LLGT R13,540
+C BCR 15,R14
Alan Field
Technical Engineer Principal
BCBS Minnesota
Phone: 651.662.3546 Mobile: 651.428.8826
From: "Chase, John" <jch...@ussco.com>
To: IBM-MAIN@LISTSERV.UA.EDU,
Date: 07/16/2014 12:40
Subject: "Secret" Machine Instruction?
Sent by: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU>
Hi, List,
While browsing around looking for something else, I noticed in an
IBM-supplied load module the following sequence at the entry point:
90EC D00C
188D
E3D0 021C 0017
WTH is 'E3D0' ?? It seems to be missing from the "List of Instructions by
Op Code" in the 10th edition of z/Architecture Principles of Operation,
published September 2012.
TIA,
-jc-
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