XREFB <symbol>[,<symbol>]...
None
This directive specifies symbols referenced in the current module but defined in another module. Symbols enumerated in a XREFB directive, can be accessed using the direct address mode. The list of symbols and corresponding 8-bit values is passed to the linker.
The number of symbols enumerated in a XREFB directive is only limited by the memory available at assembly time.
XREFB OtherDirect ; Reference "OtherDirect" def in another ; module (See XDEF directive example.)