/****************************************************************************
*
*                         The Universal VESA VBE
*
*                   Copyright (C) 1993 Kendall Bennett.
*                           All rights reserved.
*
* Filename:     $RCSfile: vesavbe.h $
* Version:      $Revision: 1.1 $
*
* Language:     ANSI C
* Environment:  IBM PC (MS DOS)
*
* Description:  Header file declaring the structures used to comminucate
*               with a VESA VBE compliant BIOS.
*
*               MUST be compiled in the large model.
*
* $Id: vesavbe.h 1.1 1993/09/19 01:26:00 kjb release $
*
* Revision History:
* -----------------
*
* $Log: vesavbe.h $
* Revision 1.1  1993/09/19  01:26:00  kjb
* Initial revision
*
****************************************************************************/

#ifndef __VESAVBE_H
#define __VESAVBE_H

#ifndef __DEBUG_H
#include "debug.h"
#endif

/*---------------------- Macros and type definitions ----------------------*/

/* SuperVGA information block */

typedef struct {
    char    VESASignature[4];       /* 'VESA' 4 byte signature          */
    short   VESAVersion;            /* VBE version number               */
    char    *OEMStringPtr;          /* Pointer to OEM string            */
    long    Capabilities;           /* Capabilities of video card       */
    short   *VideoModePtr;          /* Pointer to supported modes       */
    short   TotalMemory;            /* Number of 64kb memory blocks     */
    char    reserved[236];          /* Pad to 256 byte block size       */
    } VgaInfoBlock;

/* SuperVGA mode information block */

typedef struct {
    short   ModeAttributes;         /* Mode attributes                  */
    char    WinAAttributes;         /* Window A attributes              */
    char    WinBAttributes;         /* Window B attributes              */
    short   WinGranularity;         /* Window granularity in k          */
    short   WinSize;                /* Window size in k                 */
    short   WinASegment;            /* Window A segment                 */
    short   WinBSegment;            /* Window B segment                 */
    void    *WinFuncPtr;            /* Pointer to window function       */
    short   BytesPerScanLine;       /* Bytes per scanline               */
    short   XResolution;            /* Horizontal resolution            */
    short   YResolution;            /* Vertical resolution              */
    char    XCharSize;              /* Character cell width             */
    char    YCharSize;              /* Character cell height            */
    char    NumberOfPlanes;         /* Number of memory planes          */
    char    BitsPerPixel;           /* Bits per pixel                   */
    char    NumberOfBanks;          /* Number of CGA style banks        */
    char    MemoryModel;            /* Memory model type                */
    char    BankSize;               /* Size of CGA style banks          */
    char    NumberOfImagePages;     /* Number of images pages           */
    char    res1;                   /* Reserved                         */
    char    RedMaskSize;            /* Size of direct color red mask    */
    char    RedFieldPosition;       /* Bit posn of lsb of red mask      */
    char    GreenMaskSize;          /* Size of direct color green mask  */
    char    GreenFieldPosition;     /* Bit posn of lsb of green mask    */
    char    BlueMaskSize;           /* Size of direct color blue mask   */
    char    BlueFieldPosition;      /* Bit posn of lsb of blue mask     */
    char    RsvdMaskSize;           /* Size of direct color res mask    */
    char    RsvdFieldPosition;      /* Bit posn of lsb of res mask      */
    char    DirectColorModeInfo;    /* Direct color mode attributes     */
    char    res2[216];              /* Pad to 256 byte block size       */
    } ModeInfoBlock;

#endif  /* __VESAVBE_H */