A program module has a residence mode assigned to it, and each entry point and alias has an addressing mode assigned to it. You can specify one or both of these modes when creating a program module or you can allow the binder to assign default values. For additional information see AMODE and RMODE hierarchy. The addressing and residence modes must be compatible. The binder, however, allows you to specify them as independent options and validates the combination when the module is saved. See AMODE and RMODE combinations for information on how the binder resolves addressing and residence modes.
AMODEs and RMODEs can be assigned at assembly or compilation time for inclusion in an object module. AMODE and RMODE values provided to the binder in the ESD data of an object module are retained in the ESD data of the program module (except for overlay programs). Overriding the AMODE and RMODE values in the ESD (see AMODE and RMODE hierarchy) sets the values in the program library directory entry, but does not affect the ESD data.
A special, invalid combination of AMODE(ANY) RMODE(ANY), when appearing in ESD records, is processed as AMODE(MIN). This setting is used by some compilers when creating OBJ-format object modules that do not support AMODE(MIN).