$include (C8051F410.INC)

LED 	EQU		P0.2

CSEG at 0000h

	jmp Main

Main:
    anl		PCA0MD,    #0BFh	; watchdog off
    mov		PCA0MD,    #000h
    mov		XBR1,      #040h	; crossbar on

Main1:
	cpl 	LED		; complement LED
	call 	Wait1sec
	jmp 	Main1	; repeat forever


Wait1sec:
	mov 	TMOD,#001h 	; Timer 0 mode is 16-bit timer
	clr		TR0			; stop timer
	mov 	TH0,#0C1h	; wait time = 65536-(TH0*256+TL0)/(sysclk/12)
	mov 	TL0,#0B1h	; 
	clr		TF0			; clear overflow flag
	setb	TR0			; start timer 0
	jnb		TF0,$		; wait for overflow
	clr		TF0			; clear overflow flag
	clr		TR0			; stop timer 0
	ret

END