第1个回答 2013-12-11
如下即可：
ORG 0000H
LJMP START
ORG 0003H
LJMP X0_INT
ORG 0013H
LJMP X1_INT
ORG 0030H
START:
SETB IT0
SETB IT1
SETB EX0
SETB EX1
SETB EA
;----------------------
MOV A, #0FEH
LOOP:
MOV P1, A
CALL DELAY
RL A
SJMP LOOP
;----------------------
X0_INT:
PUSH ACC
PUSH PSW
SETB RS0
MOV A, #0F0H
MOV R2, #6
X0_1:
MOV P1, A
CALL DELAY
CPL A
DJNZ R2, X0_1
POP PSW
POP ACC
RETI
;----------------------
X1_INT:
PUSH ACC
PUSH PSW
SETB RS1
MOV A, #0AAH
MOV R2, #6
X1_1:
MOV P1, A
CALL DELAY
CPL A
DJNZ R2, X1_1
POP PSW
POP ACC
RETI
;----------------------
DELAY:
MOV R5, #3
DJNZ R7, $
DJNZ R6, $ - 2
DJNZ R5, $ - 4
RET
;----------------------
END
第3个回答 2015-06-29
这是用keil自动翻译的，自己整理一下吧。
; FUNCTION delay05s (BEGIN)
;---- Variable 'i' assigned to Register 'R7'
0000 7F05 MOV R7,#05H
0002 ?C0001:
;---- Variable 'j' assigned to Register 'R6'
0002 7EC8 MOV R6,#0C8H
0004 ?C0004:
;---- Variable 'k' assigned to Register 'R5'
0004 7DFA MOV R5,#0FAH
0006 ?C0007:
0006 DDFE DJNZ R5,?C0007
0008 ?C0006:
0008 DEFA DJNZ R6,?C0004
000A ?C0003:
000A DFF6 DJNZ R7,?C0001
000C ?C0010:
000C 22 RET
; FUNCTION delay05s (END)
; FUNCTION main (BEGIN)
0000 ?C0011:
;---- Variable 'j' assigned to Register 'R4'
0000 7C01 MOV R4,#01H
;---- Variable 'i' assigned to Register 'R3'
0002 E4 CLR A
0003 FB MOV R3,A
0004 ?C0013:
0004 EC MOV A,R4
0005 F4 CPL A
0006 F590 MOV P1,A
0008 120000 R LCALL delay05s
000B EC MOV A,R4
000C 25E0 ADD A,ACC
000E FC MOV R4,A
000F 0B INC R3
0010 BB08F1 CJNE R3,#08H,?C0013
0013 ?C0014:
0013 7C80 MOV R4,#080H
0015 E4 CLR A
0016 FB MOV R3,A
0017 ?C0016:
0017 EB MOV A,R3
0018 C3 CLR C
0019 9408 SUBB A,#08H
001B 50E3 JNC ?C0011
001D EC MOV A,R4
001E F4 CPL A
001F F590 MOV P1,A
0021 120000 R LCALL delay05s
0024 EC MOV A,R4
0025 C3 CLR C
0026 13 RRC A
0027 FC MOV R4,A
0028 0B INC R3
0029 80EC SJMP ?C0016
; FUNCTION main (END)