s7-5.asm

来自「手把手叫你学单片机」· 汇编 代码 · 共 37 行

	ORG 0000H
	LJMP MAIN
	ORG 0030H
MAIN:	MOV 20H,#00H
	MOV A,20H
F1:MOV 21H,#10
GOON:	CLR C
	ANL A,#0FH
	MOV DPTR,#TAB
	MOVC A,@A+DPTR
	MOV P1,#0FDH
   MOV P0,A 
	ACALL DEL
	MOV A,20H
	SWAP  A
	ANL A,#0FH
	MOVC A,@A+DPTR
	MOV P1,#0FEH
	MOV P0,A
	ACALL DEL
	MOV A,20H
	INC A
	DA A
	MOV 20H, A
	AJMP F1
DEL: 	MOV R7,#014H
DEL1:	MOV R6,#2FH
DEL2:   MOV R5,#01FH
DEL3:	DJNZ R5,DEL3
	DJNZ R6,DEL2
	DJNZ R7,DEL1
	RET
	ORG 0100H
TAB:	DB 28H,7EH,0A2H,62H,74H,61H,21H,7AH,20H,60H

	END