Bạn sửa lại như sau:
Code:
processor 16f877a
include <p16f877a.inc>
__CONFIG _CP_OFF & _WDT_OFF & _BODEN_OFF & _PWRTE_ON & _XT_OSC & _WRT_OFF & _LVP_ON & _CPD_OFF
;----------------------------------------
ORG 0x000
GOTO start
ORG 0x005 ;Thêm dòng này vào
start
BCF STATUS,RP1
BSF STATUS,RP0 ;chon Bank 1
CLRF TRISB
BCF STATUS,RP0; Chon Bank 0
MOVLW b'10001111'
MOVWF PORTB
loop
GOTO loop
END
Thân,