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But i know the access process:(above all,we name base 64K and extended 64K for convenience )
1 when you address base 64K ,do it as usually.
2 when you aaddress extended 64K ,you should firstly assert the cs pin(e.g.P1.0),then you can use extended 64K as if base 64K.Acctually,it is extended 64K ,which is already mapped to such.
发表时间:2004年8月20日11:08:47