.TITLE ADD2 ; ; CALL ADD2(I,J) ; J = I + J ; WHERE I,J are 2 word integers (integer*4) ; ADD2:: TST (R5) MOV (R5)+,R0 ; First variable MOV (R5)+,R1 ; Second var ADD (R0)+,(R1)+ ; Add lo order bits ADC (R1) ; Handle carry ADD (R0)+,(R1)+ ; And hi order RETURN .END