Providing Symbolic Names for Locations in Alternate Address Spaces

You can use the AR and ALET keywords on the EQUATE subcommand to establish symbols to refer to storage locations in alternate address/data spaces. The AR keyword allows you to specify the number of the access register to be used to reference data in an alternate address/data space. Use the ALET keyword to specify from one to eight hexadecimal characters that indicate which address/data space is to be referenced.

The following examples show the use of the EQUATE subcommand to associate a symbolic name with a location in an alternate address/data space.

Subcommand: Function
EQUATE X 2290. AR(5): Symbol X refers to the address of location 2290 in the address/data space indicated by access register 5.
EQUATE Y 1R? ALET(4AC2): Symbol Y refers to the address pointed to by general register 1 in the address/data space indicated by the ALET value 4AC2.