v4.0/src/DEV/RAMDRIVE/DIRENT.INC

   1 Break <Directory entry>
   2
   3 ;
   4 ;       +---------------------------+
   5 ;       |  (12 BYTE) filename/ext   |       0       0
   6 ;       +---------------------------+
   7 ;       |     (BYTE) attributes     |       11      B
   8 ;       +---------------------------+
   9 ;       |    (10 BYTE) reserved     |       12      C
  10 ;       +---------------------------+
  11 ;       | (WORD) time of last write |       22      16
  12 ;       +---------------------------+
  13 ;       | (WORD) date of last write |       24      18
  14 ;       +---------------------------+
  15 ;       |   (WORD) First cluster    |       26      1A
  16 ;       +---------------------------+
  17 ;       |     (DWORD) file size     |       28      1C
  18 ;       +---------------------------+
  19 ;
  20 ;   First byte of filename  = E5 -> free directory entry
  21 ;                           = 00 -> end of allocated directory
  22 ;   Time:   Bits 0-4=seconds/2, bits 5-10=minute, 11-15=hour
  23 ;   Date:   Bits 0-4=day, bits 5-8=month, bits 9-15=year-1980
  24 ;
  25
  26 dir_entry   STRUC
  27 dir_name    DB      11 DUP (?)          ; file name
  28 dir_attr    DB      ?                   ; attribute bits
  29 dir_pad     DB      10 DUP (?)          ; reserved for expansion
  30 dir_time    DW      ?                   ; time of last write
  31 dir_date    DW      ?                   ; date of last write
  32 dir_first   DW      ?                   ; first allocation unit of file
  33 dir_size_l  DW      ?                   ; low 16 bits of file size
  34 dir_size_h  DW      ?                   ; high 16 bits of file size
  35 dir_entry   ENDS
  36
  37 attr_read_only      EQU      1h
  38 attr_hidden         EQU      2h
  39 attr_system         EQU      4h
  40 attr_volume_id      EQU      8h
  41 attr_directory      EQU     10h
  42 attr_archive        EQU     20h
  43 attr_device         EQU     40h         ; This is a VERY special bit.
  44                                         ;   NO directory entry on a disk EVER
  45                                         ;   has this bit set. It is set non-zero
  46                                         ;   when a device is found by GETPATH
  47
  48 attr_all            EQU     attr_hidden+attr_system+attr_directory
  49                                         ; OR of hard attributes for FINDENTRY
  50
  51 attr_ignore         EQU     attr_read_only+attr_archive+attr_device
  52                                         ; ignore this(ese) attribute(s) during
  53                                         ; search first/next
  54
  55 attr_changeable     EQU     attr_read_only+attr_hidden+attr_system+attr_archive
  56                                         ; changeable via CHMOD