you can find the minning of config bit into pic16f84a datasheet
CP CP CP CP CP CP DP CP CP CP PWRTE WDTE FOSC1 FOSC0 bit13 bit0 R = Readable bit P = Programmable bit - n = Value at POR reset u = unchanged bit 13:8 CP: Program Memory Code Protection bit 1 = Code protection off 0 = Program memory is code protected bit 7 DP: Data Memory Code Protection bit 1 = Code protection off 0 = Data memory is code protected bit 6:4 CP: Program Memory Code Protection bit 1 = Code protection off 0 = Program memory is code protected : Power-up Timer Enable bit bit 3 PWRTE 1 = Power-up timer is disabled 0 = Power-up timer is enabled bit 2 WDTE: Watchdog Timer Enable bit 1 = WDT enabled 0 = WDT disabled bit 1:0 FOSC1:FOSC0: Oscillator Selection bits 11 =RC oscillator 10 =HS oscillator 01 =XT oscillator 00 =LP oscillator