A method of controlling a micro device linked to a mainframe in such a manner that a file present in the mainframe can be accessed from the micro device. In response to a request for file access from a user program, reference is made to a table in which a plurality of command sequences for use in...http://www.google.com.hk/patents/US5819031?utm_source=gb-gplus-share專利 US5819031 - Micro-mainframe link control method and apparatus
