define osc 4
define adc_bits 8
trisb =$00
trisa =$ff
adcon1 = 7
lamp var portb
start var porta.0
stops var porta.1
lamp =0
loop:
if start=0 then
repeat
pause 10
lamp=$ff
until stops=0 ' if constrain true out off loop
endif
lamp =$00
pause 10
goto loop
end