RELAY_ON	MACRO relay_name
	CLR	relay_name
		ENDM
RELAY_OFF	MACRO relay_name
	SETB	relay_name
		ENDM
MOTOR_ON	MACRO motor_number
	SETB	motor_number
		ENDM
MOTOR_OFF	MACRO motor_number
	CLR	motor_number
		ENDM

; somewhere in program:
	RELAY_ON  RELAY_A
	MOTOR_ON  MOTOR_1	
;...
	MOTOR_OFF MOTOR_1
	RELAY_OFF RELAY_A