Description: 1, the program uses two files directory (ie, set the home directory MFD) and user files directory (the UFD). In addition, in order to open the file set up to run the file directory (of AFD).
2 has been simplified in order to facilitate the achievement of the file read and write, read and write command, just change the read and write pointer, not the actual read and write operations.
3, because the system is small, the file directory search uses a simple linear search
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J4Filesystem.txt