CICS® Transaction Server supports non-Language Environment® (LE) assembler language programs that run in 64-bit addressing mode (AMODE(64)).
For information about the DFHEISTG storage, see Extensions to dynamic storage.
For information about the DFHECALL macro, see DFHECALL macro.
For information about link-editing the stub programs, see Using the EXEC interface modules for AMODE(64) applications.