banksel  ANSELB
bcf  ANSELB,3             ; make all RB3 digital
banksel LATB
bcf  LATB,3              ; set latch to known value
banksel TRISB     
bcf  TRISB,3            ; set RB3 as an output pin
banksel LATB 
bsf LATB,3                ; set RB3 hight
goto $                   ; loop forever