12.4.2扩展eprom的.txt

里面有好多的原码,大家都来下载.用asm编写的

EBCLR2:
MOV	A,ADDPL					
MOV	DPL,A					
MOV	A,ADDPH					
MOV	DPH,A
MOV	A,R7
JZ		EBC21
INC		R6
EBC21:
CLR		A
MOVX	@DPTR,A					
INC		DPTR
DJNZ	R7,EBC21
DJNZ	R6,EBC21
XPROMTORM:
MOV   	 A,ADDPL
ADD    	A,R7
MOV    	DPL,A
MOV    	A,ADDPH
ADDC   	A,#00H
MOV    	DPH,A
MOV    	A,R0
ADD    	A,R7
MOV    	R0,A
TEPM:
DEC    	R0
DEC    	DPL
MOV    	A,DPL
CJNE   	A,#0FFH,ITEM2
DEC    	DPH
ITEM2:
MOVX	A,@DPTR						
MOV	@R0,A
DJNZ	R7,I TEPM 
RET