reactos/subsystems/mvdm/ntvdm/dos/dos32krnl/himem.h

   1 /*
   2  * COPYRIGHT:       GPLv2+ - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Virtual DOS Machine
   4  * FILE:            himem.h
   5  * PURPOSE:         DOS XMS Driver
   6  * PROGRAMMERS:     Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   7  */
   8
   9 /* DEFINITIONS ****************************************************************/
  10
  11 #define XMS_ADDRESS     0x110000
  12 #define XMS_BLOCKS      0x37C0
  13 #define XMS_BLOCK_SIZE  1024
  14 #define XMS_MAX_HANDLES 16
  15
  16 #define XMS_STATUS_SUCCESS         0x00
  17 #define XMS_STATUS_NOT_IMPLEMENTED 0x80
  18 #define XMS_STATUS_HMA_IN_USE      0x91
  19 #define XMS_STATUS_OUT_OF_MEMORY   0xA0
  20 #define XMS_STATUS_OUT_OF_HANDLES  0xA1
  21 #define XMS_STATUS_INVALID_HANDLE  0xA2
  22 #define XMS_STATUS_NOT_LOCKED      0xAA
  23 #define XMS_STATUS_LOCKED          0xAB
  24 #define XMS_STATUS_LOCK_OVERFLOW   0xAC
  25 #define XMS_STATUS_CANNOT_LOCK     0xAD
  26
  27 typedef struct _XMS_HANDLE
  28 {
  29     BYTE Handle;
  30     BYTE LockCount;
  31     WORD Size;
  32     DWORD Address;
  33 } XMS_HANDLE, *PXMS_HANDLE;
  34
  35 /* FUNCTIONS ******************************************************************/
  36
  37 BOOLEAN XmsGetDriverEntry(PDWORD Pointer);
  38 VOID XmsInitialize(VOID);
  39 VOID XmsCleanup(VOID);