main.lst

51 单片机支持多位LED显示电路和源程序


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:	MAIN.ASM
	Object File:	MAIN.HEX
	List File:	MAIN.LST



 Line  I  Addr  Code            Source

    1:		N      0000				ORG	00H
    2:	  0000	74 00		L:			MOV	A, #0				;设置显示初值
    3:	  0002	78 0A					MOV	R0, #10				;设置显示个数
    4:	  0004	F5 80		START:			MOV 	P0, A				;向P0口输出显示段码
    5:	  0006	D2 B0					SETB	P3.0
    6:	  0008	D2 B1					SETB	P3.1				;位选
    7:	  000A	12 00 12				LCALL	DELAY
    8:	  000D	04					INC		A
    9:	  000E	D8 F4					DJNZ	R0, START
   10:	  0010	80 EE					JMP		L
   11:	  0012	7D 32		DELAY:  		MOV 	R5, #50				;延时程序
   12:	  0014	7E 14		D1:			MOV 	R6, #20
   13:	  0016	7F F8		D2:			MOV 	R7, #248
   14:	  0018	DF FE					DJNZ 	R7, $
   15:	  001A	DE FA					DJNZ 	R6, D2
   16:	  001C	DD F6					DJNZ 	R5, D1
   17:	  001E	22					RET
   18:							END
   19:





                     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	    0014	  12
D2				  CODE	    0016	  13
DELAY				  CODE	    0012	  11
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
L				  CODE	    0000	   2
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

ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 3



SYMBOL				  TYPE     VALUE	LINE
------------------------------------------------------------
SINT				  CODE	    0023
SM0				  BIT	      9F
SM1				  BIT	      9E
SM2				  BIT	      9D
SP				  DATA	      81
START				  CODE	    0004	   4
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