ORG 0000H
AJMP START
ORG 0013H
AJMP INT_1
ORG 0030H
START:MOV P3,#0FFH
MOV P0,#0AAH
ACALL DEL
MOV P0,#55H
ACALL DEL
SETB EA
SETB EX1
LJMP START
AJMP $
LJMP START
INT_1:PUSH ACC
CLR C
MOV A,#0FFH
MOV R0,#09H
MP: MOV P0,A
RRC A
ACALL DEL
DJNZ R0,MP
REL: ACALL DEL
POP ACC
RETI
DEL: MOV R7,#04H
DEL1: MOV R6,#0
DEL2: MOV R5,#0
DJNZ R5,$
DJNZ R6,DEL2
DJNZ R7,DEL1
RET
END
中断程序完成后,中断返回到哪一条程序? |