ex4-1.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:	EX4-1.ASM
	Object File:	EX4-1.HEX
	List File:	EX4-1.LST



 Line  I  Addr  Code            Source

    1:		N      0000		ORG 0000H           ;复位入口
    2:	  0000	02 00 30		LJMP MAIN           ;转到主程序
    3:		N      0003		ORG 0003H           ;外部中断 入口
    4:	  0003	02 00 3F		LJMP INT_0          ;转到中断服务程序
    5:		N      0013		ORG 0013H           ;外部中断 入口
    6:	  0013	02 00 4F		LJMP INT_1          ;转到中断服务程序
    7:		N      0030		ORG 0030H           ;主程序入口
    8:	  0030	53 90 55	MAIN: 	ANL P1, #55H        ;主程序开始，熄灭LED，准备输入查询
    9:	  0033	D2 A8		      	SETB EX0            ;允许INT0中断
   10:	  0035	D2 88		      	SETB IT0            ;负边沿触发方式
   11:	  0037	D2 AA		      	SETB EX1            ;允许INT1中断
   12:	  0039	D2 8A		      	SETB IT1            ;负边沿触发方式
   13:	  003B	D2 AF		      	SETB EA             ;开中断
   14:	  003D	80 FE		HERE:	SJMP HERE           ;等待中断
   15:	  003F	30 90 02	INT_0:	JNB P1.0, L1        ;外中断0服务程序，开始查询
   16:	  0042	D2 91		      	SETB P1.1           ;由外设1引起的中断
   17:	  0044	30 92 02	L1:   	JNB P1.2, L2
   18:	  0047	D2 93		      	SETB P1.3           ;由外设2引起的中断
   19:	  0049	30 94 02	L2:   	JNB P1.4, L3
   20:	  004C	D2 95		      	SETB P1.5           ;由外设3引起的中断
   21:	  004E	32		L3:   	RETI                ;中断返回
   22:	  004F	53 90 55	INT_1:  ANL P1, #55H         ;外中断1服务程序，熄灭LED
   23:	  0052	32			RETI
   24:				      	END





                     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	    003D	  14
IE				  DATA	      A8
IE0				  BIT	      89
IE1				  BIT	      8B
INT0				  BIT	      B2
INT1				  BIT	      B3
INT_0				  CODE	    003F	  15
INT_1				  CODE	    004F	  22
IP				  DATA	      B8
IT0				  BIT	      88
IT1				  BIT	      8A
L1				  CODE	    0044	  17
L2				  CODE	    0049	  19
L3				  CODE	    004E	  21
MAIN				  CODE	    0030	   8
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

ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 3



SYMBOL				  TYPE     VALUE	LINE
------------------------------------------------------------
RXD				  BIT	      B0
SBUF				  DATA	      99
SCON				  DATA	      98
SINT				  CODE	    0023
SM0				  BIT	      9F
SM1				  BIT	      9E
SM2				  BIT	      9D
SP				  DATA	      81
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