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:	ADC0808.ASM
	Object File:	ADC0808.HEX
	List File:	ADC0808.LST



 Line  I  Addr  Code            Source

    1:		N      0035	ADCDATA	EQU		35H					;存放轉換后的數據
    2:		B	 A1	START 	BIT 	P2.1
    3:		B	 A7	OE	 	BIT 	P2.7
    4:		B	 A3	EOC 	BIT 	P2.3
    5:		B	 A0	CLOCK	BIT		P2.0
    6:		B	 A4	ADD_A	BIT		P2.4
    7:		B	 A5	ADD_B	BIT		P2.5
    8:		B	 A6	ADD_C	BIT		P2.6
    9:
   10:		N      0000	ORG 	0000H
   11:	  0000	02 01 00			LJMP	MAIN
   12:		N      0100	ORG		0100H
   13:
   14:	  0100			MAIN:
   15:	  0100	C2 A4				CLR		ADD_A
   16:	  0102	C2 A5				CLR		ADD_B
   17:	  0104	C2 A6				CLR		ADD_C		 		;選擇ADC0808的通道0
   18:
   19:	  0106	C2 A1		WAIT: 	CLR 	START
   20:	  0108	D2 A1				SETB 	START
   21:	  010A	C2 A1				CLR 	START				;啟動轉換
   22:	  010C	B2 A0		CLOOP:	CPL		CLOCK
   23:	  010E	30 A3 FB	 		JNB 	EOC,CLOOP	 		;等待轉換結束
   24:	  0111	D2 A7				SETB 	OE 					;允許輸出
   25:	  0113	85 90 35			MOV 	ADCDATA,P1			;暫存轉換結果
   26:	  0116	C2 A7				CLR 	OE			  		;關閉輸出
   27:	  0118	85 35 B0			MOV	P3,ADCDATA
   28:	  011B	02 01 06			LJMP	WAIT
   29:				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
ADCDATA				  NUMBER    0035	   1
ADD_A				  BIT	      A4	   6
ADD_B				  BIT	      A5	   7
ADD_C				  BIT	      A6	   8
B				  DATA	      F0
CLOCK				  BIT	      A0	   5
CLOOP				  CODE	    010C	  22
CY				  BIT	      D7
DPH				  DATA	      83
DPL				  DATA	      82
EA				  BIT	      AF
EOC				  BIT	      A3	   4
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	    0100	  14
OE				  BIT	      A7	   3
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

ASEM-51 V1.2                                         Copyright (c) 1996 by W.W. Heinz                                         PAGE 3



SYMBOL				  TYPE     VALUE	LINE
------------------------------------------------------------
RS0				  BIT	      D3
RS1				  BIT	      D4
RXD				  BIT	      B0
SBUF				  DATA	      99
SCON				  DATA	      98
SINT				  CODE	    0023
SM0				  BIT	      9F
SM1				  BIT	      9E
SM2				  BIT	      9D
SP				  DATA	      81
START				  BIT	      A1	   2
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	    0106	  19
WR				  BIT	      B6