Or Read POP and check that you have a box that has the "ETF2-enhancement facility" and use only DW alignment.
Are there any boxes out that do not have the ETF2-enhancement? It is the facility that allows the stop on match with R0 to be suppressed. can be tested with TM 200+3,B'10000000' (in z/VSE and z/OS only not in Linux on Z) -- Martin Pi_cap_CPU - all you ever need around MWLC/SCRT/CMT in z/VSE more at http://www.picapcpu.de
