By changing pinsel var you can select different portc pins
if you need the remaining portc pins then more code is needed



Code:
' PIC 16F690 @20MHz#CONFIG
    __config _FCMEN_OFF &_IESO_OFF &_CPD_OFF &_WDT_OFF &_HS_OSC &_BOR_OFF &_CP_OFF &_PWRTE_OFF &_MCLRE_OFF
#ENDCONFIG


TRISC = %00000000


DEFINE OSC 20




pinsel  var byte 
pinsel   = 128 ;  64 FOR RC:6    32 FOR RC:5 ETC 




MAIN:


    PORTC        = PORTC  | pinsel


        ASM
            nop
            nop
            nop
        ENDASM
    PORTC = 0         ' have this syntax for tests only here
        ASM
            nop
        ENDASM
        
    GOTO MAIN
END