leq.asm

在定时器中断中做LED的PWM输出 AT89C2051实现A/D转换的C51程序 单片机开发系统 指令系统 程序设计 定时与中断 系统扩展 接口技术 串行口

	JNZ	DIV1
	MOV	@R0,#41H
	CLR	OV
	RET
DIV1:	INC	R1
	MOV	A,@R1
	INC	R1
	ORL	A,@R1
	DEC	R1
	DEC	R1
	JNZ	DIV2
	SETB	OV
	RET
DIV2:	LCALL	MVR0
	MOV	A,@R0
	XRL	A,@R1
	RLC	A
	MOV	PFA,C
	LCALL	MVR1
	LCALL	DIV3
	LJMP	MOV0
DIV3:	CLR	C
	MOV	A,R4
	SUBB	A,R7
	MOV	A,R3
	SUBB	A,R6
	JC	DIV4
	LCALL	RR1
	SJMP	DIV3
DIV4:	CLR	A
	XCH	A,R0
	PUSH	ACC
	CLR	A
	XCH	A,R1
	PUSH	ACC
	MOV	A,R2
	PUSH	ACC
	MOV	B,#10H
DIV5:	CLR	C
	MOV	A,R1
	RLC	A
	MOV	R1,A
	MOV	A,R0
	RLC	A
	MOV	R0,A
	MOV	A,R4
	RLC	A
	MOV	R4,A
	XCH	A,R3
	RLC	A
	XCH	A,R3
	MOV	F0,C
	CLR	C
	SUBB	A,R7
	MOV	R2,A
	MOV	A,R3
	SUBB	A,R6
	ANL	C,/F0
	JC	DIV6
	MOV	R3,A
	MOV	A,R2
	MOV	R4,A
	INC	R1
DIV6:	DJNZ	B,DIV5
	MOV	A,R6
	CLR	C
	RRC	A
	SUBB	A,R3
	CLR	A
	ADDC	A,R1
	MOV	R4,A
	CLR	A
	ADDC	A,R0
	MOV	R3,A
	POP	ACC
	MOV	R2,A
	POP	ACC
	MOV	R1,A
	POP	ACC
	MOV	R0,A
	MOV	A,R2
	CLR	C
	SUBB	A,R5
	LCALL	MD
	LJMP	RLN

FCMP:	MOV	A,@R0
	XRL	A,@R1
	JNB	ACC.7,CMP2
	MOV	A,@R0
	RLC	A
	MOV	A,#0FFH
	RET
CMP2:	MOV	A,@R1
	MOV	C,ACC.6
	MOV	ACC.7,C
	MOV	B,A
	MOV	A,@R0
	MOV	C,ACC.7
	MOV	F0,C
	MOV	C,ACC.6
	MOV	ACC.7,C
	CLR	C
	SUBB	A,B
	JZ	CMP6
	RLC	A
	JNB	F0,CMP5
	CPL	C
CMP5:	MOV	A,#0FFH
	RET
CMP6:	INC	R0
	INC	R0
	INC	R1
	INC	R1
	CLR	C
	MOV	A,@R0
	SUBB	A,@R1
	MOV	B,A
	DEC	R0
	DEC	R1
	MOV	A,@R0
	SUBB	A,@R1
	DEC	R0
	DEC	R1
	ORL	A,B
	JZ	CMP7
	JNB	F0,CMP7
	CPL	C
CMP7:	RET

FABS:	MOV	A,@R0
	CLR	ACC.7
	MOV	@R0,A
	RET

FRCP:	MOV	A,@R0
	MOV	C,ACC.7
	MOV	PFA,C
	MOV	C,ACC.6
	MOV	ACC.7,C
	MOV	R5,A
	INC	R0
	MOV	A,@R0
	MOV	R6,A
	INC	R0
	MOV	A,@R0
	MOV	R7,A
	DEC	R0
	DEC	R0
	ORL	A,R6
	JNZ	RCP
	SETB	OV
	RET
RCP:	MOV	A,R6
	JB	ACC.7,RCP2
	CLR	C
	MOV	A,R7
	RLC	A
	MOV	R7,A
	MOV	A,R6
	RLC	A
	MOV	R6,A
	DEC	R5
	SJMP	RCP
RCP2:	MOV	R2,#1
	MOV	R3,#80H
	MOV	R4,#0
	LCALL	DIV3
	LJMP	MOV0

FSQU:	MOV	A,R0
	XCH	A,R1
	PUSH	ACC
	LCALL	FMUL
	POP	ACC
	MOV	R1,A
	RET

FSQR:	MOV	A,@R0
	JNB	ACC.7,SQR
	SETB	OV
	RET
SQR:	INC	R0
	INC	R0
	MOV	A,@R0
	DEC	R0
	ORL	A,@R0
	DEC	R0
	JNZ	SQ
	MOV	@R0,#41H
	CLR	OV
	RET
SQ:	MOV	A,@R0
	MOV	C,ACC.6
	MOV	ACC.7,C
	INC	A
	CLR	C
	RRC	A
	MOV	@R0,A
	INC	R0
	JC	SQR0
	MOV	A,@R0
	RRC	A
	MOV	@R0,A
	INC	R0
	MOV	A,@R0
	RRC	A
	MOV	@R0,A
	DEC	R0
SQR0:	MOV	A,@R0
	JZ	SQR9
	MOV	R2,A
	INC	R0
	MOV	A,@R0
	MOV	R3,A
	MOV	A,R2
	ADD	A,#57H
	JC	SQR2
	ADD	A,#45H
	JC	SQR1
	ADD	A,#24H
	MOV	B,#0E3H
	MOV	R4,#80H
	SJMP	SQR3
SQR1:	MOV	B,#0B2H
	MOV	R4,#0A0H
	SJMP	SQR3
SQR2:	MOV	B,#8DH
	MOV	R4,#0D0H
SQR3:	MUL	AB
	MOV	A,B
	ADD	A,R4
	MOV	R4,A
	MOV	B,A
	MUL	AB
	XCH	A,R3
	CLR	C
	SUBB	A,R3
	MOV	R3,A
	MOV	A,B
	XCH	A,R2
	SUBB	A,R2
	MOV	R2,A
SQR4:	SETB	C
	MOV	A,R4
	RLC	A
	MOV	R6,A
	CLR	A
	RLC	A
	MOV	R5,A
	MOV	A,R3
	SUBB	A,R6
	MOV	B,A
	MOV	A,R2
	SUBB	A,R5
	JC	SQR5
	INC	R4
	MOV	R2,A
	MOV	R3,B
	SJMP	SQR4
SQR5:	MOV	A,R4
	XCH	A,R2
	RRC	A
	MOV	F0,C
	MOV	A,R3
	MOV	R5,A
	MOV	R4,#8
SQR6:	CLR	C
	MOV	A,R3
	RLC	A
	MOV	R3,A
	CLR	C
	MOV	A,R5
	SUBB	A,R2
	JB	F0,SQR7
	JC	SQR8
SQR7:	MOV	R5,A
	INC	R3
SQR8:	CLR	C
	MOV	A,R5
	RLC	A
	MOV	R5,A
	MOV	F0,C
	DJNZ	R4,SQR6
	MOV	A,R3
	MOV	@R0,A
	DEC	R0
	MOV	A,R2
	MOV	@R0,A
SQR9:	DEC	R0
	CLR	OV
	RET

DTOF:	MOV	R2,A
	MOV	A,@R0
	MOV	R3,A
	INC	R0
	MOV	A,@R0
	MOV	R4,A
	DEC	R0
	LCALL	RLN
	LJMP	MOV0

FTOD:	LCALL	MVR0
	MOV	A,R2
	JZ	FTD4
	JB	ACC.7,FTD4
	SETB	C
	SUBB	A,#10H
	JC	FTD1
	SETB	OV
	RET
FTD1:	SETB	C
	MOV	A,R2
	SUBB	A,#8
	JC	FTD3
FTD2:	MOV	B,#10H
	LCALL	FTD8
	SETB	F0
	CLR	C
	CLR	OV
	RET
FTD3:	MOV	B,#8
	LCALL	FTD8
	SETB	C
	CLR	F0
	CLR	OV
	RET
FTD4:	MOV	B,#0
	LCALL	FTD8
	CLR	OV
	CLR	F0
	CLR	C
	RET
FTD8:	MOV	A,R2
	CJNE	A,B,FTD9
	MOV	A,R3
	MOV	@R0,A
	INC	R0
	MOV	A,R4
	MOV	@R0,A
	DEC	R0
	RET
FTD9:	CLR	C
	LCALL	RR1
	SJMP	FTD8

BTOF:	INC	R0
	INC	R0
	MOV	A,@R0
	MOV	R7,A
	DEC	R0
	MOV	A,@R0
	MOV	R6,A
	DEC	R0
	ORL	A,R7
	JNZ	BTF0
	MOV	@R0,#41H
	RET
BTF0:	MOV	A,@R0
	MOV	C,ACC.7
	MOV	PFC,C
	CLR	PFA
	MOV	C,ACC.6
	MOV	ACC.7,C
	MOV	@R0,A
	JNC	BTF1
	ADD	A,#19
	JC	BTF2
	MOV	@R0,#41H
	INC	R0
	MOV	@R0,#0
	INC	R0
	MOV	@R0,#0
	DEC	R0
	DEC	R0
	RET
BTF1:	SUBB	A,#19
	JC	BTF2
	MOV	A,#3FH
	MOV	C,PFC
	MOV	ACC.7,C
	MOV	@R0,A
	INC	R0
	MOV	@R0,#0FFH
	INC	R0
	MOV	@R0,#0FFH
	DEC	R0
	DEC	R0
	RET
BTF2:	CLR	A
	MOV	R4,A
	MOV	R3,A
	MOV	R2,#10H
BTF3:	MOV	A,R7
	ADD	A,R7
	DA	A
	MOV	R7,A
	MOV	A,R6
	ADDC	A,R6
	DA	A
	MOV	R6,A
	MOV	A,R4
	RLC	A
	MOV	R4,A
	MOV	A,R3
	RLC	A
	MOV	R3,A
	DEC	R2
	JNB	ACC.7,BTF3
	MOV	A,R6
	ADD	A,#0B0H
	CLR	A
	ADDC	A,R4
	MOV	R4,A
	CLR	A
	ADDC	A,R3
	MOV	R3,A
	JNC	BTF4
	MOV	R3,#80H
	INC	R2
BTF4:	MOV	DPTR,#BTFL
	MOV	A,@R0
	ADD	A,#19
	MOV	B,#3
	MUL	AB
	ADD	A,DPL
	MOV	DPL,A
	JNC	BTF5
	INC	DPH
BTF5:	CLR	A
	MOVC	A,@A+DPTR
	MOV	C,ACC.6
	MOV	ACC.7,C
	MOV	R5,A
	MOV	A,#1
	MOVC	A,@A+DPTR
	MOV	R6,A
	MOV	A,#2
	MOVC	A,@A+DPTR
	MOV	R7,A
	LCALL	MUL1
	MOV	C,PFC
	MOV	PFA,C
	LJMP	MOV0

FTOB:	INC	R0
	MOV	A,@R0
	INC	R0
	ORL	A,@R0
	DEC	R0
	DEC	R0
	JNZ	FTB0
	MOV	@R0,#41H
	RET
FTB0:	MOV	A,@R0
	MOV	C,ACC.7
	MOV	PFC,C
	CLR	ACC.7
	MOV	@R0,A
	LCALL	MVR0
	MOV	DPTR,#BFL0
	MOV	B,#0
	MOV	A,R2
	JNB	ACC.7,FTB1
	MOV	DPTR,#BTFL
	MOV	B,#0EDH
	ADD	A,#16
	JNC	FTB1
	MOV	DPTR,#BFLN
	MOV	B,#0FAH
FTB1:	CLR	A
	MOVC	A,@A+DPTR
	MOV	C,ACC.6
	MOV	ACC.7,C
	MOV	R5,A
	MOV	A,#1
	MOVC	A,@A+DPTR
	MOV	R6,A
	MOV	A,#2
	MOVC	A,@A+DPTR
	MOV	R7,A
	MOV	A,R5
	CLR	C
	SUBB	A,R2
	JB	ACC.7,FTB2
	JNZ	FTB3
	MOV	A,R6
	CLR	C
	SUBB	A,R3
	JC	FTB2
	JNZ	FTB3
	MOV	A,R7
	CLR	C
	SUBB	A,R4
	JC	FTB2
	JNZ	FTB3
	MOV	R5,B
	INC	R5
	MOV	R6,#10H
	MOV	R7,#0
	SJMP	FTB6
FTB2:	INC	DPTR
	INC	DPTR
	INC	DPTR
	INC	B
	SJMP	FTB1
FTB3:	PUSH	B
	LCALL	DIV3
FTB4:	MOV	A,R2
	JZ	FTB5
	CLR	C
	LCALL	RR1
	SJMP	FTB4
FTB5:	POP	ACC
	MOV	R5,A
	LCALL	HB2
	MOV	R6,A
	LCALL	HB2
	MOV	R7,A
	MOV	A,R3
	RLC	A
	CLR	A
	ADDC	A,R7
	DA	A
	MOV	R7,A
	CLR	A
	ADDC	A,R6
	DA	A
	MOV	R6,A
	JNC	FTB6
	MOV	R6,#10H
	INC	R5
FTB6:	INC	R0
	INC	R0
	MOV	A,R7
	MOV	@R0,A
	DEC	R0
	MOV	A,R6
	MOV	@R0,A
	DEC	R0
	MOV	A,R5
	MOV	C,PFC
	MOV	ACC.7,C
	MOV	@R0,A
	RET
HB2:	MOV	A,R4
	MOV	B,#100
	MUL	AB
	MOV	R4,A
	MOV	A,B
	XCH	A,R3
	MOV	B,#100
	MUL	AB
	ADD	A,R3
	MOV	R3,A
	JNC	HB21
	INC	B
HB21:	MOV	A,B
	MOV	B,#10
	DIV	AB
	SWAP	A
	ORL	A,B
	RET
BTFL:	DB	41H,0ECH,1EH
	DB	45H,93H,93H
	DB	48H,0B8H,78H
	DB	4BH,0E6H,96H
	DB	4FH,90H,1DH
	DB	52H,0B4H,25H
	DB	55H,0E1H,2EH
	DB	59H,8CH,0BDH
	DB	5CH,0AFH,0ECH
	DB	5FH,0DBH,0E7H
	DB	63H,89H,70H
	DB	66H,0ABH,0CCH
	DB	69H,0D6H,0C0H
BFLN:	DB	6DH,86H,38H
	DB	70H,0A7H,0C6H
	DB	73H,0D1H,0B7H
	DB	77H,83H,12H
	DB	7AH,0A3H,0D7H
	DB	7DH,0CCH,0CDH
BFL0:	DB	1,80H,00H
	DB	4,0A0H,00H
	DB	7,0C8H,00H
	DB	0AH,0FAH,00H
	DB	0EH,9CH,40H
	DB	11H,0C3H,50H
	DB	14H,0F4H,24H
	DB	18H,98H,97H
	DB	1BH,0BEH,0BCH
	DB	1EH,0EEH,6BH
	DB	22H,95H,03H
	DB	25H,0BAH,44H
	DB	28H,0E8H,0D5H
	DB	2CH,91H,85H
	DB	2FH,0B5H,0E6H
	DB	32H,0E3H,60H
	DB	36H,8EH,1CH
	DB	39H,31H,0A3H
	DB	3CH,0DEH,0BH
	DB	40H,8AH,0C7H

	END