In your 16F690.INC only comment out the __config line. Leave everything else
as-is.

Then something like this should work if you're disabling analog inputs & comparators;
Code:
@MyConfig = _INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_ON  
@MyConfig = MyConfig & _MCLRE_ON & _BOR_OFF 
@ __config  MyConfig 

DEFINE OSC 4

    i var byte
    
    ANSEL=0      ' all digital
    ANSELH=0     ' analog module disabled
    CM1CON0=0
    CM2CON0=0
    PortC = 0
    TRISC = 0


main:
    portc = 0
    pause 500
    for i = 1 to 15
    portC = i
    pause 150
    next i
    goto main
    end