GEOS File Directory Entry Format

          Byte#     Description
          $00       DOS file type
                         Bit 7     File closed properly.
                         Bit 6     File is write protected.
                         Bits 0-2  File type
                                        0    DEL
                                        1    SEQ
                                        2    PRG
                                        3    USR
                                        4    REL (Not permitted under GEOS)
          $01       Track number of first sector.
          $02       Sector number of first sector.
          $03-$12   File name.
          $13       Track number for info sector.
          $14       Sector number for info sector.
          $15       File structure.
                         0    Sequential structure.
                         1    VLIR format
          $16       GEOS file type.
                         0    Non-GEOS file.
                         1    BASIC Program.
                         2    Assembly program.
                         3    Data file.
                         4    System file.
                         5    Desk Accessory.
                         6    Application.
                         7    Application Data.
                         8    Font file.
                         9    Printer driver.
                         10   Input driver.
                         11   Disk Device
                         12   System Boot file
                         13   Temporary
                         14   Auto Executing
                         15   Input 128
          The  next  few  bytes  define the time and  date  of  the  file's
          creation.
          $17       Year.
          $18       Month.
          $19       Day.
          $1A       Hour.
          $1B       Minute.
          $1C-$1D   File size in blocks (including info sector).