MACRO 00020000 TASC &A,&B,&C,&D,&E 00040000 A&SYSNDX DC AL1((D&SYSNDX-C&SYSNDX)*HEX+L'B&SYSNDX) CONTROL & COMP. 00060000 B&SYSNDX DC C'&E' COMPARE BYTES. 00080000 C&SYSNDX DS 0C START OF CONTROL BYTES. 00100000 TAS &A,&B,&C,&D 00120000 D&SYSNDX DS 0C END OF CONTROL BYTES. 00140000 MEND 00160000