Ah. I can see how that would be easy to do (0011 == 11 decimal == b'1011'). I guess the byte after the HALFWORD just happened to contain x'00'.
"It's always Friday somewhere." -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * [email protected] * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM > -----Original Message----- > From: IBM Mainframe Assembler List [mailto:ASSEMBLER- > [email protected]] On Behalf Of Mark Boonie > Sent: Thursday, November 15, 2012 10:15 AM > To: [email protected] > Subject: Another you-see-what-you-want-to-see moment > > I know it's not Friday, but.... > > Yesterday someone had a problem where the following behavior was > observed: > > Before ICM: > R1 = x'0000000000000000' > HALFWORD = x'1122' > > Instruction: > ICM R1,0011,HALFWORD > > After ICM: > R1 = x'0000000011002200' > > (The cause of the problem did not involve macros or OPSYN.) > > - mb > > Mark Boonie
