Help with this code, it compiles but doesn't work on my simulations

[joseph]

@ DEVICE pic12F683, INTRC_OSC_NOCLKOUT
DEFINE OSC 8
TRISIO = %101011
CMCON0 = 7 
start:   IF      GPIO.1 = 1 then 
         high    GPIO.4
alarm:   FREQOUT GPIO.2,1500,1000
         pause 1500
         goto alarm
         else
         low GPIO.2
         pause 100
         low GPIO.4
         pause 100
         goto start
         endif
end

this code compiles, i'm sure that i selected the correct device but it doesn't work