subsystems/ntvdm/ntvdm.h

   1 /*
   2  * COPYRIGHT:       GPL - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Virtual DOS Machine
   4  * FILE:            ntvdm.h
   5  * PURPOSE:         Header file to define commonly used stuff
   6  * PROGRAMMERS:     Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
   7  */
   8
   9 #ifndef _NTVDM_H_
  10 #define _NTVDM_H_
  11
  12 /* INCLUDES *******************************************************************/
  13
  14 #include <stdio.h>
  15 #include <stdarg.h>
  16 #include <conio.h>
  17
  18 #define WIN32_NO_STATUS
  19 #include <windef.h>
  20 #include <winbase.h>
  21 #include <wingdi.h>
  22 #include <wincon.h>
  23 #include <winnls.h>
  24 #include <winuser.h>
  25
  26 #include <debug.h>
  27
  28 /* DEFINES ********************************************************************/
  29
  30 /* Basic Memory Management */
  31 #define TO_LINEAR(seg, off) (((seg) << 4) + (off))
  32 #define MAX_SEGMENT 0xFFFF
  33 #define MAX_OFFSET  0xFFFF
  34 #define MAX_ADDRESS 0x1000000 // 16 MB of RAM
  35
  36 #define FAR_POINTER(x)  \
  37     (PVOID)((ULONG_PTR)BaseAddress + TO_LINEAR(HIWORD(x), LOWORD(x)))
  38
  39 #define SEG_OFF_TO_PTR(seg, off)    \
  40     (PVOID)((ULONG_PTR)BaseAddress + TO_LINEAR((seg), (off)))
  41
  42 /* BCD-Binary conversion */
  43 #define BINARY_TO_BCD(x) ((((x) / 1000) << 12) + (((x) / 100) << 8) + (((x) / 10) << 4) + ((x) % 10))
  44 #define BCD_TO_BINARY(x) (((x) >> 12) * 1000 + ((x) >> 8) * 100 + ((x) >> 4) * 10 + ((x) & 0x0F))
  45
  46 /* Processor speed */
  47 #define STEPS_PER_CYCLE 256
  48 #define KBD_INT_CYCLES 16
  49
  50 /* FUNCTIONS ******************************************************************/
  51
  52 extern LPVOID BaseAddress;
  53 extern BOOLEAN VdmRunning;
  54
  55 VOID DisplayMessage(LPCWSTR Format, ...);
  56
  57 #endif // _NTVDM_H_
  58
  59 /* EOF */