led88.asm

51单片机用汇编实例 包括ad

;==============================================================
; 文件名称: LED88.ASM
; 功能描述: 单片机控制一个8*8点阵显示符号"口", 由大到小循环
;           显示.
;==============================================================

	ORG 0000H
	LJMP START
	ORG 0100H
START:	MOV A, #7FH		;列控制
MLP9:	MOV R4, #0C0H
MLP1:	MOV R3, #00H
MLP2:	MOV DPTR, #VALUE1	;显示图形1, 取数据首地址
	MOV P0, A		;控制列有效
	PUSH ACC
	MOV A, R3
	MOVC A, @A+DPTR
	MOV P2, A		;控制行
	POP ACC
	RR A
	INC R3
	LCALL DELAY
	CJNE R3, #08H, MLP2
	DJNZ R4, MLP1
	NOP
	MOV R2, #1H
MMLP1:	LCALL DELAY
	DJNZ R2, MMLP1

	MOV R4, #0C0H		;图形2
MLP3:	MOV R3, #00H
MLP4:	MOV DPTR, #VALUE2
	MOV P0, A
	PUSH ACC
	MOV A, R3
	MOVC A, @A+DPTR
	MOV P2, A
	POP ACC
	RR A
	INC R3
	LCALL DELAY
	CJNE R3, #08H, MLP4
	DJNZ R4, MLP3
	NOP
	MOV R2, #1H
MMLP2:	LCALL DELAY
	DJNZ R2, MMLP2

	MOV R4, #0C0H		;图形3
MLP5:	MOV R3, #00H
MLP6:	MOV DPTR, #VALUE3
	MOV P0, A
	PUSH ACC
	MOV A, R3
	MOVC A, @A+DPTR
	MOV P2, A
	POP ACC
	RR A
	INC R3
	LCALL DELAY
	CJNE R3, #08H, MLP6
	DJNZ R4, MLP5
	NOP
	MOV R2, #1H
MMLP3:	LCALL DELAY
	DJNZ R2, MMLP3

	MOV R4, #0C0H		;图形4
MLP7:	MOV R3, #00H
MLP8:	MOV DPTR, #VALUE4
	MOV P0, A
	PUSH ACC
	MOV A, R3
	MOVC A, @A+DPTR
	MOV P2, A
	POP ACC
	RR A
	INC R3
	LCALL DELAY
	CJNE R3, #08H, MLP8
	DJNZ R4, MLP7
	NOP
	MOV R2, #1H
MMLP4:	LCALL DELAY
	DJNZ R2, MMLP4

	LJMP MLP9

DELAY:	MOV R7, #02H
DLP1:	MOV R6, #050H
DLP2:	DJNZ R6, DLP2
	DJNZ R7, DLP1
	RET
;显示图形数据
VALUE1:	DB 0FFH,81H,81H,81H,81H,81H,81H,0FFH
VALUE2:	DB  00H,7EH,42H,42H,42H,42H,7EH, 00H
VALUE3:	DB  00H,00H,3CH,24H,24H,3CH,00H, 00H
VALUE4:	DB  00H,00H,00H,18H,18H,00H,00H, 00H

	END