ex9-3.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:	EX9-3.ASM
	Object File:	EX9-3.HEX
	List File:	EX9-3.LST



 Line  I  Addr  Code            Source

    1:		N      0000		ORG 	0000H
    2:	  0000	90 00 27	START: 	MOV 	DPTR,#TABLE	  ;DPTR指向段码表首地址
    3:	  0003	7F 7F			MOV 	R7,#07FH      	  ;设置动态显示扫描初值
    4:	  0005	74 00		S1:	MOV	A,#00H
    5:	  0007	93			MOVC	A,@A+DPTR	  ;查表取得段码
    6:	  0008	B4 01 02		CJNE	A,#01H,S2	  ;判断段码是否为结束符
    7:	  000B	80 F3			SJMP	START
    8:	  000D	F5 F0		S2:	MOV 	B,A		  ;段码送B保存
    9:	  000F	EF			MOV	A,R7
   10:	  0010	23			RL 	A		  ;显示位扫描值左移1位
   11:	  0011	F5 B0			MOV 	P3,A		  ;显示位扫描值送P3口
   12:	  0013	FF			MOV 	R7,A
   13:	  0014	85 F0 80		MOV	P0,B		  ;显示段码送P0显示
   14:	  0017	12 00 1D		LCALL	DELAY		  ;延时
   15:	  001A	A3			INC	DPTR
   16:	  001B	80 E8			SJMP	S1
   17:	  001D	7D 14		DELAY: 	MOV 	R5,#20		  ;延时子程序
   18:	  001F	7E 14		D2: 	MOV 	R6,#20
   19:	  0021	00		D1: 	NOP
   20:	  0022	DE FD			DJNZ 	R6,D1
   21:	  0024	DD F9			DJNZ 	R5,D2
   22:	  0026	22			RET
   23:	  0027	3F 06 5B 4F	TABLE: 	DB 	3FH,06H,5BH,4FH,66H,6DH,7DH,07H	  ;段码表
	  002B	66 6D 7D 07
   24:	  002F	01			DB	01H				  ;结束符
   25:					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
D1				  CODE	    0021	  19
D2				  CODE	    001F	  18
DELAY				  CODE	    001D	  17
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
S1				  CODE	    0005	   4
S2				  CODE	    000D	   8
SBUF				  DATA	      99

ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 3



SYMBOL				  TYPE     VALUE	LINE
------------------------------------------------------------
SCON				  DATA	      98
SINT				  CODE	    0023
SM0				  BIT	      9F
SM1				  BIT	      9E
SM2				  BIT	      9D
SP				  DATA	      81
START				  CODE	    0000	   2
T0				  BIT	      B4
T1				  BIT	      B5
TABLE				  CODE	    0027	  23
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