?? alarm.lst
字號:
A51 MACRO ASSEMBLER ALARM 07/29/2006 14:16:59 PAGE 1
MACRO ASSEMBLER A51 V8.00
OBJECT MODULE PLACED IN Alarm.OBJ
ASSEMBLER INVOKED BY: e:\Program Files\Keil\C51\BIN\A51.EXE Alarm.asm SET(SMALL) DEBUG EP
LOC OBJ LINE SOURCE
0000 1 FLAG BIT 00H
0000 2 ORG 00H
0000 2097FD 3 START: JB P1.7,START ;判斷按鍵狀態
0003 30000E 4 JNB FLAG,NEXT ;判斷標志位
0006 7AC8 5 MOV R2,#200 ;置計數值
0008 B290 6 DV: CPL P1.0
000A 120021 7 LCALL DELY500
000D 120021 8 LCALL DELY500 ;延時1毫秒
0010 DAF6 9 DJNZ R2,DV
0012 B200 10 CPL FLAG ;標志位取反
0014 7AC8 11 NEXT: MOV R2,#200 ;置計數值
0016 B290 12 DV1: CPL P1.0
0018 120021 13 LCALL DELY500 ;延時0.5毫秒
001B DAF9 14 DJNZ R2,DV1
001D B200 15 CPL FLAG ;標志位取反
001F 80DF 16 SJMP START
0021 7FFA 17 DELY500:MOV R7,#250
0023 00 18 LOOP: NOP
0024 DFFD 19 DJNZ R7,LOOP
0026 22 20 RET
21 END
A51 MACRO ASSEMBLER ALARM 07/29/2006 14:16:59 PAGE 2
SYMBOL TABLE LISTING
------ ----- -------
N A M E T Y P E V A L U E ATTRIBUTES
DELY500. . . . . . C ADDR 0021H A
DV . . . . . . . . C ADDR 0008H A
DV1. . . . . . . . C ADDR 0016H A
FLAG . . . . . . . B ADDR 0020H.0 A
LOOP . . . . . . . C ADDR 0023H A
NEXT . . . . . . . C ADDR 0014H A
P1 . . . . . . . . D ADDR 0090H A
START. . . . . . . C ADDR 0000H A
REGISTER BANK(S) USED: 0
ASSEMBLY COMPLETE. 0 WARNING(S), 0 ERROR(S)
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