不知道有没人做过这个东东的程序，帮看看我的程序那里出问题了
WR EQU P3.6
RD EQU P3.7
RS EQU P2.7
CS EQU P2.6
ORG 0000H
LJMP MAIN
MAIN:
MOV SP,#60H
CLR WR
SETB RD
CLR CS
CLR RS
MOV P0,#03H;送行首地址
SETB RS
MOV P0,#00H
CLR RS
MOV P0,#04H;送列高位首地址
SETB RS
MOV P0,#00H
CLR RS
MOV P0,#05H;送列低位首地址
SETB RS
MOV P0,#00H
CLR RS
MOV P0,#1FH
MOV R5,#0CH
START2:
MOV R6,#28H
START1:
MOV R7,#0EAH
START:
SETB RS
MOV P0,#07H
DJNZ R7,START
DJNZ R6,START1
DJNZ R5,START2
LJMP MAIN
END
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