softfz.asm

来自「达盛单片机试验箱」· 汇编 代码 · 共 55 行

			ORG		0000H
		
			AJMP	START
		
			ORG		0030H
		
START:		MOV		A,20H
			MOV		DPTR,#TAB			;散转首址
			RL		A
			JMP		@A+DPTR
TAB:		AJMP	DISP00				;显示00
			AJMP	DISP01				;显示01
			AJMP	DISP02				;显示02
			AJMP	DISP03				;显示03
		
DISP00:		MOV		A,#03H
			CALL	SEND
			CALL	DELAY
			CALL	SEND
			AJMP	START
					
DISP01:		MOV		A,#9FH
			CALL	SEND
			CALL	DELAY
			MOV		A,#03H
			CALL	SEND
			AJMP	START
			
DISP02:		MOV		A,#25H
			CALL	SEND
			CALL	DELAY
			MOV		A,#03H
			CALL	SEND
			AJMP	START
		
DISP03:		MOV		A,#0DH
			CALL	SEND
			CALL	DELAY
			MOV		A,#03H
			CALL	SEND
			AJMP	START
		
SEND:		MOV		SBUF,A
			JNB		TI,$
			CLR		TI					;发送字符
			RET

DELAY:		MOV		R5,#0FH				;显示子程序
DE1:		MOV		R6,#0FH
			DJNZ	R6,$
			DJNZ	R5,DE1
			RET	
		
			END