INT 2F - Communicating Applications Spec v1.2+ - UNLOAD RESIDENT MANAGER AX = CB16h BX = 1234h CX = 5678h DX = 9ABCh Return: AX = 0000h successful < 0 error code Note: the MTEZ XpressFax CASMGR ignores the values in BX,CX, and DX SeeAlso: AX=CB00h