We are using the compare to take two directory listings and then spit out to anoher file a list of files that are on the first list but not on the second. I did finally find out how to do it though. You have to specify the following EXEC PARM in the JCL (this is shown with HEX ON):
PARM='OPT=02501006066111210250000058821080 *MN008NYN 4NNFNYNNÂ '
DCDD77DDE7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF05DDFFFDED4FDDCDEDD407
7194ED673E025010060661112102500000588210800C4500858504556585500D
The last byte contains the return code in hex that you want to use when a miscompare is found. So in this example I've used x'00' to get my return code of zero.