int0.asm

刚学时编的小程序

/*
;-----------------------------------
;INT.ASM TEST 8051 INT0
;-----------------------------------
ORG 0H
JMP BEGIN
ORG 03H
JMP INT0
;-----------------------------------
BEGIN:MOV SP,#60H
	MOV TCON,#00H
	MOV IP,#01H
	MOV IE,#81H
RUN:MOV A,#0
LOOP:
	MOV P1,A
	MOV R5,#50
	CALL DELAY
	CPL A
	JMP LOOP
;----------------------------------
INT0:
	PUSH A
	PUSH PSW
	CLR RS1
	SETB RS0
	CLR C
	MOV A,#0FFH
	MOV R4,#8
LOOPR:
	RRC A
	MOV P1,A
	MOV R5,#5
	CALL DELAY
	DJNZ R4,LOOPR
	POP PSW
	POP A
	RETI
;----------------------------------
DELAY:
	MOV R6,#50
DFG:MOV R7,#100
	DJNZ R7,$
	DJNZ R6,DFG
	DJNZ R5,DELAY
	RET

	END
;----------------------------------	
*/

/*
SECOND EQU 30H
TCOUNT EQU 31H
ORG 00H
LJMP START
ORG 0BH
LJMP INT0X
START: MOV SECOND,#00H
MOV A,SECOND
MOV B,#10
DIV AB
MOV DPTR,#TABLE
MOVC A,@A+DPTR
MOV P3,A
MOV A,B
MOVC A,@A+DPTR
MOV P2,A
MOV TCOUNT,#00H
MOV TMOD,#01H
MOV TH0,#(65536-50000) / 256
MOV TL0,#(65536-50000) MOD 256
SETB TR0
SETB ET0
SETB EA
SJMP $
INT0X:
MOV TH0,#(65536-50000) / 256
MOV TL0,#(65536-50000) MOD 256
INC TCOUNT
MOV A,TCOUNT
CJNE A,#20,NEXT
MOV TCOUNT,#00H
INC SECOND
MOV A,SECOND
CJNE A,#60,NEX
MOV SECOND,#00H
NEX: MOV A,SECOND
MOV B,#10
DIV AB
MOV DPTR,#TABLE
MOVC A,@A+DPTR
MOV P3,A
MOV A,B
MOVC A,@A+DPTR
MOV P2,A
NEXT: RETI
TABLE: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH
END													
*/ 

/*------;按键显示0~F------------
		
		ORG 0000H
		AJMP MAIN

MAIN:	MOV SP,#60H
		MOV P2,#00H
		MOV DPTR,#TABLE
LOOP:	MOV A,P3
		ANL A,#0FH
		ACALL CODE1
		MOV P2,A
		ACALL DELAY
		AJMP LOOP

CODE1: 	;INC A
		MOVC A,@A+DPTR
		RET

DELAY:	MOV R2,#50H
ASD:	MOV R3,#60H
		DJNZ R3,$
		DJNZ R2,ASD
		RET

TABLE:	DB 0C0H,0F9H,0A4H,0B0H
		DB 99H,92H,82H,0F8H
		DB 80H,90H,88H,83H
		DB 0C6H,0A1H,86H,8EH   
		
		END
-----------------------------*/



;-------按键控制电机--------

		ORG 0000H
		AJMP MAIN
MAIN:	MOV SP,#60H
		CLR P1.0
LOOP:	JB P3.4,LOOP1
		ACALL DELAY
		ACALL ON
LOOP1:	JB P3.5,LOOP
		ACALL DELAY
		ACALL OFF
		AJMP LOOP

ON:		SETB P1.0
		CLR P1.1
		CLR P1.2
		RET

OFF:	SETB P1.1
		CLR P1.2
		CLR P1.0
		RET

DELAY:	MOV R2,#50H
ASD:	MOV R3,#60H
		DJNZ R3,$
		DJNZ R2,ASD
		RET

		END
;-----------------------------