ex3-1.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:	EX3-1.ASM
	Object File:	EX3-1.HEX
	List File:	EX3-1.LST



 Line  I  Addr  Code            Source

    1:		N      0000	    ORG 0000H            ;程序的复位入口
    2:	  0000	02 00 30	START: LJMP MAIN
    3:		N      0030	    ORG 0030H            ;主程序入口
    4:	  0030	75 30 03	MAIN:  MOV 30H,#03	 ;a=3
    5:	  0033	75 31 04	       MOV 31H,#04       ;b=4
    6:	  0036	E5 30		       MOV A,30H         ;取得a值
    7:	  0038	12 0F 00	       LCALL SQR         ;调查表子程序
    8:	  003B	F9		       MOV R1,A          ;a2暂存于R1中
    9:	  003C	E5 31		       MOV A,31H         ;取得b值
   10:	  003E	12 0F 00	       LCALL SQR         ;调查表子程序
   11:	  0041	29		       ADD A,R1          ;计算a2+b2
   12:	  0042	F5 32		       MOV 32H,A         ;存结果
   13:	  0044	80 FE		       SJMP $            ;循环，等待
   14:				;查表子程序如下：
   15:		N      0F00	    ORG 0F00H
   16:	  0F00	90 0F 05	SQR:   MOV DPTR,#TAB
   17:	  0F03	93		       MOVC A,@A+DPTR    ;查表求得平方值
   18:	  0F04	22		       RET               ;子程序返回
   19:	  0F05	00 01 04 09	TAB:   DB 0,1,4,9,16     ;平方表
	  0F09	10
   20:	  0F0A	19 24 31 40	       DB 25,36,49,64,81
	  0F0E	51
   21:				    END                  ;程序结束





                     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
MAIN				  CODE	    0030	   4
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
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
SQR				  CODE	    0F00	  16
START				  CODE	    0000	   2
T0				  BIT	      B4
T1				  BIT	      B5
TAB				  CODE	    0F05	  19
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