program:
COUNT EQU 13
org 0000h
goto main
org 0004h
goto zhongduan
org 0010h
jiafa: bcf status,5
MOVLW 225
MOVWF tmr0
retlw 0
zhongduan: bcf intcon,2
movLW 3h
movwf count
retfie
MAIN:
BSF INTCON,5
bsf intcon,7
bsf status,5;rp0
movlw 208
movwf 81h
; bcf 81h,5
; bcf status,5
call jiafa
self: goto self
end
tmr0中断不产生,
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