秒时钟的产生.lst

这个是大学的计算机接口实验课上经常用到的原程序

A51 MACRO ASSEMBLER  秒时钟的产生                                                         03/25/2003 17:09:48 PAGE     1


MACRO ASSEMBLER A51 V1.10
OBJECT MODULE PLACED IN 秒时钟的产生.OBJ
ASSEMBLER INVOKED BY: C:\MANLEY\PMEDWIN\A51.EXE 秒时钟的产生.ASM DB

LOC  OBJ            LINE     SOURCE

0000                   1                      org     0000H
0000 020050            2                      LJMP    MAIN
000B                   3                      ORG     000BH
000B 020066            4                      LJMP    T0SERVE
0050                   5                      ORG     0050H
0050 758160            6               MAIN:  MOV     SP,#60H
0053 758901            7                      MOV     TMOD,#01H
0056 758AB0            8                      MOV     TL0,#0B0H
0059 758C3C            9                      MOV     TH0,#3CH
005C D2AF             10                      SETB    EA
005E D2A9             11                      SETB    ET0
0060 7A0A             12                      MOV     R2,#0AH
0062 D28C             13                      SETB    TR0
0064 80FE             14                HERE: SJMP    HERE
0066 758AB0           15             T0SERVE: MOV   TL0,#0B0H
0069 758C3C           16                      MOV   TH0,#3CH
006C DA04             17                      DJNZ  R2,LOOP
006E 7A0A             18                      MOV   R2,#0AH
0070 B290             19                      CPL   P1.0
0072 32               20                LOOP: RETi
                      21                      end
A51 MACRO ASSEMBLER  秒时钟的产生                                                         03/25/2003 17:09:48 PAGE     2

SYMBOL TABLE LISTING
------ ----- -------


N A M E             T Y P E  V A L U E   ATTRIBUTES

EA . . . . . . . .  B ADDR   00A8H.7 A   
ET0. . . . . . . .  B ADDR   00A8H.1 A   
HERE . . . . . . .  C ADDR   0064H   A   
LOOP . . . . . . .  C ADDR   0072H   A   
MAIN . . . . . . .  C ADDR   0050H   A   
P1 . . . . . . . .  D ADDR   0090H   A   
SP . . . . . . . .  D ADDR   0081H   A   
T0SERVE. . . . . .  C ADDR   0066H   A   
TH0. . . . . . . .  D ADDR   008CH   A   
TL0. . . . . . . .  D ADDR   008AH   A   
TMOD . . . . . . .  D ADDR   0089H   A   
TR0. . . . . . . .  B ADDR   0088H.4 A   


REGISTER BANK(S) USED: 0 


ASSEMBLY COMPLETE.  0 WARNING(S), 0 ERROR(S)