帮忙注释一下面的程序,还有它能实现的功能,[email protected],谢谢了
ORG 0000H
LJMP SE22
ORG 07B0H
SE22:MOV DPL,R3
MOV DPH,R2
MOVX A,@DPTR
MOV DPL,R5
MOV DPH,R4
MOVX @DPTR,A
CJNE R3,#0FFH,LO42
INC R2
LO42:INC R3
CJNE R5,#0FFH,LO43
INC R4
LO43:INC R5
CJNE R7,#00H,LO44
CJNE R6,#00H,LO45
LOOP:SJMP LOOP
NOP
LO44:DEC R7
SJMP SE22
LO45:DEC R7
DEC R6
SJMP SE22
END