7segled.asm

来自「20多个proteus仿真的例子」· 汇编 代码 · 共 26 行

	ORG  00H
	LJMP MAIN
	ORG 0030H
MAIN:	MOV SP,#7H
	MOV R2,#0	;设置R2的初值为0，R2中存放要显示的数值
	MOV R5,#16
START:	DJNZ R5,NEXT
	MOV R5,#16
	MOV R2,#0
NEXT:	MOV DPTR,#TAB
	MOV A,R2
	MOVC A,@A+DPTR
	MOV P2,A
	INC R2
	LCALL DELAY
	JMP START
DELAY:	MOV R0,#10
DELAY0:	MOV R7,#100
DELAY1:	MOV R6,#250
	DJNZ R6,$
	DJNZ R7,DELAY1
	DJNZ R0,DELAY0
	RET
TAB:	DB	0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H
	DB	08H,03H,46H,21H,06H,0EH
	END