ex6-7.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:	EX6-7.ASM
	Object File:	EX6-7.HEX
	List File:	EX6-7.LST



 Line  I  Addr  Code            Source

    1:		N      0000		ORG 0000H	;复位入口
    2:	  0000	02 00 30		LJMP START
    3:		N      0023		ORG 0023H	;串行中断入口
    4:	  0023	02 00 4A		LJMP SERVE
    5:		N      0030		ORG 0030H	;主程序入口
    6:	  0030	75 81 60	START:	MOV SP,#60H
    7:	  0033	75 98 50		MOV SCON,#50H	;设定串行方式：
    8:	  0036	75 89 20		MOV TMOD,#20H	;设定定时器1为方式2
    9:	  0039	43 87 80		ORL PCON,#80H	;波特率加倍
   10:	  003C	75 8D F3		MOV TH1,#0F3H	;设定波特率为4800
   11:	  003F	75 8B F3		MOV TL1,#0F3H
   12:	  0042	D2 8E			SETB TR1	;启动定时器1
   13:	  0044	D2 AF			SETB EA		;开中断
   14:	  0046	D2 AC			SETB ES
   15:	  0048	80 FE			SJMP $		;等待串行口中断
   16:
   17:	  004A	C0 E0		SERVE:	PUSH ACC	;保护现场
   18:	  004C	C2 AF			CLR EA		;关中断
   19:	  004E	C2 98			CLR RI		;清除接收中断标志
   20:	  0050	E5 99			MOV A,SBUF	;接收PC机发来的数据
   21:	  0052	F5 90			MOV P1,A	;将数据从P1口显示
   22:	  0054	F5 99			MOV SBUF,A	;同时回送给PC机
   23:	  0056	30 99 FD	WAIT:	JNB TI,WAIT
   24:	  0059	C2 99			CLR TI
   25:	  005B	D2 AF			SETB EA		;开中断
   26:	  005D	D0 E0			POP ACC
   27:	  005F	32			RETI
   28:					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
IE				  DATA	      A8
IE0				  BIT	      89
IE1				  BIT	      8B
INT0				  BIT	      B2
INT1				  BIT	      B3
IP				  DATA	      B8
IT0				  BIT	      88
IT1				  BIT	      8A
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
SERVE				  CODE	    004A	  17
SINT				  CODE	    0023
SM0				  BIT	      9F
SM1				  BIT	      9E

ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 3



SYMBOL				  TYPE     VALUE	LINE
------------------------------------------------------------
SM2				  BIT	      9D
SP				  DATA	      81
START				  CODE	    0030	   6
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
WAIT				  CODE	    0056	  23
WR				  BIT	      B6