.TITLE KBNULL ; This module is used when there is no KB driver in the system. .PSECT COMDAT,D,GBL,OVR,REL POOL: .WORD 0 ; Base address of KBPOOL FREE: .WORD 0 ; Base address of KB free list .PSECT KBNULL:: KBDATA:: CLR POOL ; Signal that KB is not in system CLR FREE ; Ditto RETURN .END