10.2.4基于8279的显示器.txt

来自「这是《MCS-51单片机应用开发实用子程序》配套源代码,对初学者很有用的」· 文本 代码 · 共 18 行

DISPLAY:
MOV	DPTR,#2C01H					
MOV	A,#08H						
MOVX	@DPTR,A						
MOV	A,#14H						
MOVX	@DPTR,A						
MOV	A,#90H							
MOVX	@DPTR,A						
MOV	R0,#50H						
MOV	R2,#10H							
MOV	DPTR,#2C00H					
AGAIN:
MOV	A,@R0						
MOVX	@DPTR,A						
INC		R0								
DJNZ	R2,AGAIN						
RET