12.4.4扩展eeprom的.txt

MCS－51单片机应用开发实用子程序.zip

PAGELOAD:
MOV	R1,#10H						
MOV	DPTR,#SDD					
MOV	R0,#DL						
MOV	P2,#DH						
WR:
MOVX	A,@DPTR						
MOV	R2,A							
MOVX	@R0,A						
INC		DPTR						
INC		R0
CJNE	R0,#00H,LOOP
INC		P2
LOOP:
DJNZ	R1,WR
DTCT:								
MOVX	A,@R0
XRL		A,R2
JB		ACC.7,DTCT
RET