v4.0/src/INC/BPB.INC

   1         %OUT BPB.INC...
   2 ;       SCCSID = @(#)BPB.ASM    1.1 85/04/29
   3 ;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;
   4 ;            C  A  V  E  A  T     P  R  O  G  R  A  M  M  E  R             ;
   5 ;                                                                          ;
   6
   7 ; BIOS PARAMETER BLOCK DEFINITION
   8 ; THIS STRUCTURE IS USED TO BUILD A FULL DPB
   9
  10 BPBLOCK STRUC
  11 BPSECSZ DW      ?                       ; SIZE IN BYTES OF PHYSICAL SECTOR
  12 BPCLUS  DB      ?                       ; SECTORS/ALLOC UNIT
  13 BPRES   DW      ?                       ; NUMBER OF RESERVED SECTORS
  14 BPFTCNT DB      ?                       ; NUMBER OF FATS
  15 BPDRCNT DW      ?                       ; NUMBER OF DIRECTORY ENTRIES
  16 BPSCCNT DW      ?                       ; TOTAL NUMBER OF SECTORS
  17 BPMEDIA DB      ?                       ; MEDIA DESCRIPTOR BYTE
  18 BPFTSEC DW      ?                       ; NUMBER OF SECTORS TAKEN UP BY ONE FAT
  19 BPBLOCK ENDS
  20
  21 A_BPB                   STRUC
  22 BPB_BYTESPERSECTOR      DW      ?
  23 BPB_SECTORSPERCLUSTER   DB      ?
  24 BPB_RESERVEDSECTORS     DW      ?
  25 BPB_NUMBEROFFATS        DB      ?
  26 BPB_ROOTENTRIES         DW      ?
  27 BPB_TOTALSECTORS        DW      ?
  28 BPB_MEDIADESCRIPTOR     DB      ?
  29 BPB_SECTORSPERFAT       DW      ?
  30 BPB_SECTORSPERTRACK     DW      ?
  31 BPB_HEADS               DW      ?
  32 BPB_HIDDENSECTORS       DW      ?
  33                         DW      ?
  34 BPB_BIGTOTALSECTORS     DW      ?
  35                         DW      ?
  36                         DB      6 DUP(?)
  37 A_BPB                   ENDS
  38 ;                                                                          ;
  39 ;            C  A  V  E  A  T     P  R  O  G  R  A  M  M  E  R             ;
  40 ;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;
  41 \1a