8.lst

我的大学单片机课程案例和ppt


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:	8.ASM
	Object File:	8.HEX
	List File:	8.LST



 Line  I  Addr  Code            Source

    1:		N      0000				ORG 0000H
    2:	  0000	01 30					AJMP START
    3:		N      000B				ORG 000BH                 ;定时器0的中断向量地址
    4:	  000B	01 71					AJMP TIME0                ;跳转到定时器0中断处理程序处
    5:		N      0030				ORG 30H
    6:	  0030			START:
    7:	  0030	75 89 01				MOV TMOD,#00000001B     ;定时0工作于方式1(16位)
    8:	  0033	75 8C B1				MOV TH0,#0B1H
    9:	  0036	75 8A E0				MOV TL0,#0E0H            ;设定定时时间20ms
   10:	  0039	D2 8C					SETB TR0                   ;定时器0开关打开
   11:	  003B	D2 A9					SETB ET0                   ;打开开定时/计数器0允许
   12:	  003D	D2 AF					SETB EA                   ;打开总中断允许
   13:	  003F	90 00 A8				MOV	DPTR,#TABLE	;将数据表TABLE的首地址赋给DPTR
   14:	  0042	75 30 00				MOV	30H,#0		;30H-33H为显示内容，初始为0
   15:	  0045	75 31 00				MOV	31H,#0
   16:	  0048	75 32 00				MOV	32H,#0
   17:	  004B	75 33 00				MOV	33H,#0
   18:	  004E	7B 32					MOV	R3,#50	;计溢出次数50×20ms=1S
   19:	  0050			DISAGAIN:
   20:	  0050	7C 04					MOV	R4,#4
   21:	  0052	79 30					MOV	R1,#30H
   22:	  0054	7A 80					MOV	R2,#10000000B
   23:	  0056			LOOP:
   24:	  0056	E7					MOV	A,@R1		;
   25:	  0057	93					MOVC	A,@A+DPTR	;将(A+DPTR)地址中的值赋给A
   26:	  0058	8A A0					MOV	P2,R2	        ;选择数码管
   27:	  005A	F5 80					MOV	P0,A		;送到P0口数码管显示
   28:	  005C	12 00 68				LCALL	DELAY	;显示延时
   29:	  005F	EA					MOV	A,R2	;R2的值移位
   30:	  0060	03					RR	A
   31:	  0061	FA					MOV	R2,A
   32:	  0062	09					INC	R1
   33:	  0063	DC F1					DJNZ	R4,LOOP	;扫描完4个否？
   34:	  0065	02 00 50				LJMP	DISAGAIN	;重新开始扫描
   35:	  0068			DELAY:
   36:	  0068	7E 04					MOV	R6,#4
   37:	  006A	7F 64		D1:			MOV	R7,#100
   38:	  006C	DF FE		D2:			DJNZ	R7,D2
   39:	  006E	DE FA					DJNZ	R6,D1
   40:	  0070	22					RET
   41:
   42:	  0071	C0 D0		TIME0:			PUSH  PSW
   43:	  0073	75 8C B1				MOV TH0,#0B1H

ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 2



 Line  I  Addr  Code            Source

   44:	  0076	75 8A E0				MOV TL0,#0E0H             ;重置定时时间20ms
   45:	  0079	DB 2A					DJNZ	R3,TRUESC;不到1S退出中断程序
   46:	  007B	7B 32					MOV	R3,#50	;重新赋溢出计数值
   47:	  007D	05 30					INC	30H	;P2口左移
   48:	  007F	E5 30					MOV	A,30H
   49:	  0081	B4 0A 21				CJNE	A,#10,TRUESC
   50:	  0084	75 30 00				MOV	30H,#0
   51:	  0087	05 31					INC	31H
   52:	  0089	E5 31					MOV	A,31H
   53:	  008B	B4 06 17				CJNE	A,#6,TRUESC
   54:	  008E	75 31 00				MOV	31H,#0
   55:	  0091	05 32					INC	32H
   56:	  0093	E5 32					MOV	A,32H
   57:	  0095	B4 0A 0D				CJNE	A,#10,TRUESC
   58:	  0098	75 32 00				MOV	32H,#0
   59:	  009B	05 33					INC	33H
   60:	  009D	E5 33					MOV	A,33H
   61:	  009F	B4 06 03				CJNE	A,#6,TRUESC
   62:	  00A2	75 33 00				MOV	33H,#0
   63:
   64:	  00A5	D0 D0		TRUESC:			POP  PSW
   65:	  00A7	32					RETI
   66:	  00A8	C0 F9 A4 B0	TABLE:	DB	0C0H,0F9H,0A4H,0B0H		;0,1,2,3
   67:	  00AC	99 92 82 F8		DB	99H,92H,82H,0F8H,80H,90H	;4,5,6,7,8,9
	  00B0	80 90
   68:							END





                     register banks used:  ---

                     no errors




ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 3





	       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	    006A	  37
D2				  CODE	    006C	  38
DELAY				  CODE	    0068	  35
DISAGAIN			  CODE	    0050	  19
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
LOOP				  CODE	    0056	  23
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

ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 4



SYMBOL				  TYPE     VALUE	LINE
------------------------------------------------------------
SCON				  DATA	      98
SINT				  CODE	    0023
SM0				  BIT	      9F
SM1				  BIT	      9E
SM2				  BIT	      9D
SP				  DATA	      81
START				  CODE	    0030	   6
T0				  BIT	      B4
T1				  BIT	      B5
TABLE				  CODE	    00A8	  66
TB8				  BIT	      9B
TCON				  DATA	      88
TF0				  BIT	      8D
TF1				  BIT	      8F
TH0				  DATA	      8C
TH1				  DATA	      8D
TI				  BIT	      99
TIME0				  CODE	    0071	  42
TIMER0				  CODE	    000B
TIMER1				  CODE	    001B
TL0				  DATA	      8A
TL1				  DATA	      8B
TMOD				  DATA	      89
TR0				  BIT	      8C
TR1				  BIT	      8E
TRUESC				  CODE	    00A5	  64
TXD				  BIT	      B1
WR				  BIT	      B6