ex5-5.lst

《单片机原理实用教程——基于Proteus虚拟仿真》一书的配套光盘


ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 1





       MCS-51 Family Cross Assembler   A S E M - 5 1   V 1.2
       =====================================================



	Source File:	EX5-5.ASM
	Object File:	EX5-5.HEX
	List File:	EX5-5.LST



 Line  I  Addr  Code            Source

    1:
    2:		N      0000		ORG 0000H          ;复位地址
    3:	  0000	02 00 30		LJMP MAIN          ;跳转到主程序
    4:		N      000B	    	ORG 000BH          ;定时器T0中断
    5:	  000B	02 00 40	     	LJMP SQ            ;跳转到定时器T0中断服务程序
    6:		N      0030		ORG 0030H          ;主程序入口
    7:	  0030	75 89 01	MAIN:	MOV TMOD,#01H      ;写入T0控制字, 16位定时方式
    8:	  0033	75 8A 18	     	MOV TL0, #18H      ;写入T0定时2毫秒初值
    9:	  0036	75 8C FC	     	MOV TH0, #0FCH
   10:	  0039	75 A8 82	     	MOV IE, #82H       ;开中断
   11:	  003C	D2 8C		    	SETB TR0           ;启动T0
   12:	  003E	80 FE		HERE:	SJMP HERE          ;循环等待
   13:	  0040	B2 90		SQ:  	CPL P1.0           ;T0中断服务程序，取反P1.0
   14:	  0042	75 8A 18	     	MOV TL0, #18H      ;重装T0定时初值
   15:	  0045	75 8C FC	     	MOV TH0, #0FCH
   16:	  0048	32		     	RETI               ;中断返回
   17:					END
   18:





                     register banks used:  ---

                     no errors




ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 2





	       L I S T   O F   S Y M B O L S
	       =============================


SYMBOL				  TYPE     VALUE	LINE
------------------------------------------------------------
AC				  BIT	      D6
ACC				  DATA	      E0
B				  DATA	      F0
CY				  BIT	      D7
DPH				  DATA	      83
DPL				  DATA	      82
EA				  BIT	      AF
ES				  BIT	      AC
ET0				  BIT	      A9
ET1				  BIT	      AB
EX0				  BIT	      A8
EX1				  BIT	      AA
EXTI0				  CODE	    0003
EXTI1				  CODE	    0013
F0				  BIT	      D5
HERE				  CODE	    003E	  12
IE				  DATA	      A8
IE0				  BIT	      89
IE1				  BIT	      8B
INT0				  BIT	      B2
INT1				  BIT	      B3
IP				  DATA	      B8
IT0				  BIT	      88
IT1				  BIT	      8A
MAIN				  CODE	    0030	   7
OV				  BIT	      D2
P				  BIT	      D0
P0				  DATA	      80
P1				  DATA	      90
P2				  DATA	      A0
P3				  DATA	      B0
PCON				  DATA	      87
PS				  BIT	      BC
PSW				  DATA	      D0
PT0				  BIT	      B9
PT1				  BIT	      BB
PX0				  BIT	      B8
PX1				  BIT	      BA
RB8				  BIT	      9A
RD				  BIT	      B7
REN				  BIT	      9C
RESET				  CODE	    0000
RI				  BIT	      98
RS0				  BIT	      D3
RS1				  BIT	      D4
RXD				  BIT	      B0
SBUF				  DATA	      99
SCON				  DATA	      98
SINT				  CODE	    0023
SM0				  BIT	      9F

ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 3



SYMBOL				  TYPE     VALUE	LINE
------------------------------------------------------------
SM1				  BIT	      9E
SM2				  BIT	      9D
SP				  DATA	      81
SQ				  CODE	    0040	  13
T0				  BIT	      B4
T1				  BIT	      B5
TB8				  BIT	      9B
TCON				  DATA	      88
TF0				  BIT	      8D
TF1				  BIT	      8F
TH0				  DATA	      8C
TH1				  DATA	      8D
TI				  BIT	      99
TIMER0				  CODE	    000B
TIMER1				  CODE	    001B
TL0				  DATA	      8A
TL1				  DATA	      8B
TMOD				  DATA	      89
TR0				  BIT	      8C
TR1				  BIT	      8E
TXD				  BIT	      B1
WR				  BIT	      B6