I guess not. I guess A is only allowed as a C "type extension" on a DC or DS.
Sigh. Not sure the problem is EBCDIC. Sounds like the problem is the assembler. Charles -----Original Message----- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of Charles Mills Sent: Tuesday, October 17, 2017 10:18 AM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: Detection of Compile-Time Self-Modifying Code So ASCII_Left_Brace EQU A'[' MVI TARGET,ASCII_Left_Brace does not work either? ... I hate EBCDIC! -- gil