v4.0/src/INC/ARENA.INC

   1 ;       SCCSID = @(#)arena.asm  1.1 85/04/09
   2 BREAK <Memory arena structure>
   3
   4 ;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;
   5 ;            C  A  V  E  A  T     P  R  O  G  R  A  M  M  E  R             ;
   6 ;                                                                          ;
   7 ;
   8 ; arena item
   9 ;
  10 arena   STRUC
  11 arena_signature     DB  ?               ; 4D for valid item, 5A for last item
  12 arena_owner         DW  ?               ; owner of arena item
  13 arena_size          DW  ?               ; size in paragraphs of item
  14 arena_reserved      DB  3 DUP(?)        ; reserved
  15 arena_name          DB  8 DUP(?)        ; owner file name
  16 arena   ENDS
  17
  18 ;
  19 ; CAUTION: The routines in ALLOC.ASM rely on the fact that arena_signature
  20 ; and arena_owner_system are all equal to zero and are contained in DI.  Change
  21 ; them and change ALLOC.ASM.
  22
  23 arena_owner_system  EQU 0               ; free block indication
  24
  25 arena_signature_normal  EQU 4Dh         ; valid signature, not end of arena
  26 arena_signature_end     EQU 5Ah         ; valid signature, last block in arena
  27 ;                                                                          ;
  28 ;            C  A  V  E  A  T     P  R  O  G  R  A  M  M  E  R             ;
  29 ;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;
  30 \1a