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/*******************************************************************
 *
 *  gmain.c   graphics utility main body                        1.1
 *
 *  This file defines a common implementation of the graphics
 *  utility used by the FreeType test programs.  It relies on
 *  system-specific drivers, like 'gfs_os.c', which interface is
 *  described in the file 'gdriver.h'.
 *
 *  Copyright 1996-2000 by
 *  David Turner, Robert Wilhelm, and Werner Lemberg.
 *
 *  This file is part of the FreeType project, and may only be used
 *  modified and distributed under the terms of the FreeType project
 *  license, LICENSE.TXT.  By continuing to use, modify or distribute
 *  this file you indicate that you have read the license and
 *  understand and accept it fully.
 *
 ******************************************************************/

#include "gdriver.h"
#include "gmain.h"

#ifndef FAILURE
#define FAILURE 0
#endif

#ifndef SUCCESS
#define SUCCESS 1
#endif

  char*  Vio;                   /* pointer to VRAM or display buffer */

  int    vio_ScanLineWidth;     /* scan line width in bytes */

  int    vio_Width;
  int    vio_Height;

  int    gcursor_x = 0;
  int    gcursor_y = 0;

  int    gwindow_width  = 0;
  int    gwindow_height = 0;

  unsigned char  gray_palette[5];


  typedef void  TFunction_Print_8x8_Char( int            x,
                                          int            y,
                                          unsigned char  c );

  TFunction_Print_8x8_Char*  Print_8x8_Char;

  /* font characters */

  unsigned char  font_8x8[2048] =
  {
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x7E, 0x81, 0xA5, 0x81, 0xBD, 0x99, 0x81, 0x7E,
    0x7E, 0xFF, 0xDB, 0xFF, 0xC3, 0xE7, 0xFF, 0x7E,
    0x6C, 0xFE, 0xFE, 0xFE, 0x7C, 0x38, 0x10, 0x00,
    0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x10, 0x00,
    0x38, 0x7C, 0x38, 0xFE, 0xFE, 0x92, 0x10, 0x7C,
    0x00, 0x10, 0x38, 0x7C, 0xFE, 0x7C, 0x38, 0x7C,
    0x00, 0x00, 0x18, 0x3C, 0x3C, 0x18, 0x00, 0x00,
    0xFF, 0xFF, 0xE7, 0xC3, 0xC3, 0xE7, 0xFF, 0xFF,
    0x00, 0x3C, 0x66, 0x42, 0x42, 0x66, 0x3C, 0x00,
    0xFF, 0xC3, 0x99, 0xBD, 0xBD, 0x99, 0xC3, 0xFF,
    0x0F, 0x07, 0x0F, 0x7D, 0xCC, 0xCC, 0xCC, 0x78,
    0x3C, 0x66, 0x66, 0x66, 0x3C, 0x18, 0x7E, 0x18,
    0x3F, 0x33, 0x3F, 0x30, 0x30, 0x70, 0xF0, 0xE0,
    0x7F, 0x63, 0x7F, 0x63, 0x63, 0x67, 0xE6, 0xC0,
    0x99, 0x5A, 0x3C, 0xE7, 0xE7, 0x3C, 0x5A, 0x99,
    0x80, 0xE0, 0xF8, 0xFE, 0xF8, 0xE0, 0x80, 0x00,
    0x02, 0x0E, 0x3E, 0xFE, 0x3E, 0x0E, 0x02, 0x00,
    0x18, 0x3C, 0x7E, 0x18, 0x18, 0x7E, 0x3C, 0x18,
    0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x66, 0x00,
    0x7F, 0xDB, 0xDB, 0x7B, 0x1B, 0x1B, 0x1B, 0x00,
    0x3E, 0x63, 0x38, 0x6C, 0x6C, 0x38, 0x86, 0xFC,
    0x00, 0x00, 0x00, 0x00, 0x7E, 0x7E, 0x7E, 0x00,
    0x18, 0x3C, 0x7E, 0x18, 0x7E, 0x3C, 0x18, 0xFF,
    0x18, 0x3C, 0x7E, 0x18, 0x18, 0x18, 0x18, 0x00,
    0x18, 0x18, 0x18, 0x18, 0x7E, 0x3C, 0x18, 0x00,
    0x00, 0x18, 0x0C, 0xFE, 0x0C, 0x18, 0x00, 0x00,
    0x00, 0x30, 0x60, 0xFE, 0x60, 0x30, 0x00, 0x00,
    0x00, 0x00, 0xC0, 0xC0, 0xC0, 0xFE, 0x00, 0x00,
    0x00, 0x24, 0x66, 0xFF, 0x66, 0x24, 0x00, 0x00,
    0x00, 0x18, 0x3C, 0x7E, 0xFF, 0xFF, 0x00, 0x00,
    0x00, 0xFF, 0xFF, 0x7E, 0x3C, 0x18, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00,
    0x6C, 0x6C, 0x6C, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x6C, 0x6C, 0xFE, 0x6C, 0xFE, 0x6C, 0x6C, 0x00,
    0x18, 0x7E, 0xC0, 0x7C, 0x06, 0xFC, 0x18, 0x00,
    0x00, 0xC6, 0xCC, 0x18, 0x30, 0x66, 0xC6, 0x00,
    0x38, 0x6C, 0x38, 0x76, 0xDC, 0xCC, 0x76, 0x00,
    0x30, 0x30, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x18, 0x30, 0x60, 0x60, 0x60, 0x30, 0x18, 0x00,
    0x60, 0x30, 0x18, 0x18, 0x18, 0x30, 0x60, 0x00,
    0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00,
    0x00, 0x18, 0x18, 0x7E, 0x18, 0x18, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x30,
    0x00, 0x00, 0x00, 0x7E, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00,
    0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0x80, 0x00,
    0x7C, 0xCE, 0xDE, 0xF6, 0xE6, 0xC6, 0x7C, 0x00,
    0x30, 0x70, 0x30, 0x30, 0x30, 0x30, 0xFC, 0x00,
    0x78, 0xCC, 0x0C, 0x38, 0x60, 0xCC, 0xFC, 0x00,
    0x78, 0xCC, 0x0C, 0x38, 0x0C, 0xCC, 0x78, 0x00,
    0x1C, 0x3C, 0x6C, 0xCC, 0xFE, 0x0C, 0x1E, 0x00,
    0xFC, 0xC0, 0xF8, 0x0C, 0x0C, 0xCC, 0x78, 0x00,
    0x38, 0x60, 0xC0, 0xF8, 0xCC, 0xCC, 0x78, 0x00,
    0xFC, 0xCC, 0x0C, 0x18, 0x30, 0x30, 0x30, 0x00,
    0x78, 0xCC, 0xCC, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x78, 0xCC, 0xCC, 0x7C, 0x0C, 0x18, 0x70, 0x00,
    0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x00,
    0x00, 0x18, 0x18, 0x00, 0x00, 0x18, 0x18, 0x30,
    0x18, 0x30, 0x60, 0xC0, 0x60, 0x30, 0x18, 0x00,
    0x00, 0x00, 0x7E, 0x00, 0x7E, 0x00, 0x00, 0x00,
    0x60, 0x30, 0x18, 0x0C, 0x18, 0x30, 0x60, 0x00,
    0x3C, 0x66, 0x0C, 0x18, 0x18, 0x00, 0x18, 0x00,
    0x7C, 0xC6, 0xDE, 0xDE, 0xDC, 0xC0, 0x7C, 0x00,
    0x30, 0x78, 0xCC, 0xCC, 0xFC, 0xCC, 0xCC, 0x00,
    0xFC, 0x66, 0x66, 0x7C, 0x66, 0x66, 0xFC, 0x00,
    0x3C, 0x66, 0xC0, 0xC0, 0xC0, 0x66, 0x3C, 0x00,
    0xF8, 0x6C, 0x66, 0x66, 0x66, 0x6C, 0xF8, 0x00,
    0xFE, 0x62, 0x68, 0x78, 0x68, 0x62, 0xFE, 0x00,
    0xFE, 0x62, 0x68, 0x78, 0x68, 0x60, 0xF0, 0x00,
    0x3C, 0x66, 0xC0, 0xC0, 0xCE, 0x66, 0x3A, 0x00,
    0xCC, 0xCC, 0xCC, 0xFC, 0xCC, 0xCC, 0xCC, 0x00,
    0x78, 0x30, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x1E, 0x0C, 0x0C, 0x0C, 0xCC, 0xCC, 0x78, 0x00,
    0xE6, 0x66, 0x6C, 0x78, 0x6C, 0x66, 0xE6, 0x00,
    0xF0, 0x60, 0x60, 0x60, 0x62, 0x66, 0xFE, 0x00,
    0xC6, 0xEE, 0xFE, 0xFE, 0xD6, 0xC6, 0xC6, 0x00,
    0xC6, 0xE6, 0xF6, 0xDE, 0xCE, 0xC6, 0xC6, 0x00,
    0x38, 0x6C, 0xC6, 0xC6, 0xC6, 0x6C, 0x38, 0x00,
    0xFC, 0x66, 0x66, 0x7C, 0x60, 0x60, 0xF0, 0x00,
    0x7C, 0xC6, 0xC6, 0xC6, 0xD6, 0x7C, 0x0E, 0x00,
    0xFC, 0x66, 0x66, 0x7C, 0x6C, 0x66, 0xE6, 0x00,
    0x7C, 0xC6, 0xE0, 0x78, 0x0E, 0xC6, 0x7C, 0x00,
    0xFC, 0xB4, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00,
    0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xFC, 0x00,
    0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x00,
    0xC6, 0xC6, 0xC6, 0xC6, 0xD6, 0xFE, 0x6C, 0x00,
    0xC6, 0xC6, 0x6C, 0x38, 0x6C, 0xC6, 0xC6, 0x00,
    0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x30, 0x78, 0x00,
    0xFE, 0xC6, 0x8C, 0x18, 0x32, 0x66, 0xFE, 0x00,
    0x78, 0x60, 0x60, 0x60, 0x60, 0x60, 0x78, 0x00,
    0xC0, 0x60, 0x30, 0x18, 0x0C, 0x06, 0x02, 0x00,
    0x78, 0x18, 0x18, 0x18, 0x18, 0x18, 0x78, 0x00,
    0x10, 0x38, 0x6C, 0xC6, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF,
    0x30, 0x30, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0xE0, 0x60, 0x60, 0x7C, 0x66, 0x66, 0xDC, 0x00,
    0x00, 0x00, 0x78, 0xCC, 0xC0, 0xCC, 0x78, 0x00,
    0x1C, 0x0C, 0x0C, 0x7C, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00,
    0x38, 0x6C, 0x64, 0xF0, 0x60, 0x60, 0xF0, 0x00,
    0x00, 0x00, 0x76, 0xCC, 0xCC, 0x7C, 0x0C, 0xF8,
    0xE0, 0x60, 0x6C, 0x76, 0x66, 0x66, 0xE6, 0x00,
    0x30, 0x00, 0x70, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x0C, 0x00, 0x1C, 0x0C, 0x0C, 0xCC, 0xCC, 0x78,
    0xE0, 0x60, 0x66, 0x6C, 0x78, 0x6C, 0xE6, 0x00,
    0x70, 0x30, 0x30, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x00, 0x00, 0xCC, 0xFE, 0xFE, 0xD6, 0xD6, 0x00,
    0x00, 0x00, 0xB8, 0xCC, 0xCC, 0xCC, 0xCC, 0x00,
    0x00, 0x00, 0x78, 0xCC, 0xCC, 0xCC, 0x78, 0x00,
    0x00, 0x00, 0xDC, 0x66, 0x66, 0x7C, 0x60, 0xF0,
    0x00, 0x00, 0x76, 0xCC, 0xCC, 0x7C, 0x0C, 0x1E,
    0x00, 0x00, 0xDC, 0x76, 0x62, 0x60, 0xF0, 0x00,
    0x00, 0x00, 0x7C, 0xC0, 0x70, 0x1C, 0xF8, 0x00,
    0x10, 0x30, 0xFC, 0x30, 0x30, 0x34, 0x18, 0x00,
    0x00, 0x00, 0xCC, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0x00, 0xCC, 0xCC, 0xCC, 0x78, 0x30, 0x00,
    0x00, 0x00, 0xC6, 0xC6, 0xD6, 0xFE, 0x6C, 0x00,
    0x00, 0x00, 0xC6, 0x6C, 0x38, 0x6C, 0xC6, 0x00,
    0x00, 0x00, 0xCC, 0xCC, 0xCC, 0x7C, 0x0C, 0xF8,
    0x00, 0x00, 0xFC, 0x98, 0x30, 0x64, 0xFC, 0x00,
    0x1C, 0x30, 0x30, 0xE0, 0x30, 0x30, 0x1C, 0x00,
    0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00,
    0xE0, 0x30, 0x30, 0x1C, 0x30, 0x30, 0xE0, 0x00,
    0x76, 0xDC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x10, 0x38, 0x6C, 0xC6, 0xC6, 0xFE, 0x00,
    0x7C, 0xC6, 0xC0, 0xC6, 0x7C, 0x0C, 0x06, 0x7C,
    0x00, 0xCC, 0x00, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x1C, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00,
    0x7E, 0x81, 0x3C, 0x06, 0x3E, 0x66, 0x3B, 0x00,
    0xCC, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0xE0, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0x30, 0x30, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0x00, 0x00, 0x7C, 0xC6, 0xC0, 0x78, 0x0C, 0x38,
    0x7E, 0x81, 0x3C, 0x66, 0x7E, 0x60, 0x3C, 0x00,
    0xCC, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00,
    0xE0, 0x00, 0x78, 0xCC, 0xFC, 0xC0, 0x78, 0x00,
    0xCC, 0x00, 0x70, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x7C, 0x82, 0x38, 0x18, 0x18, 0x18, 0x3C, 0x00,
    0xE0, 0x00, 0x70, 0x30, 0x30, 0x30, 0x78, 0x00,
    0xC6, 0x10, 0x7C, 0xC6, 0xFE, 0xC6, 0xC6, 0x00,
    0x30, 0x30, 0x00, 0x78, 0xCC, 0xFC, 0xCC, 0x00,
    0x1C, 0x00, 0xFC, 0x60, 0x78, 0x60, 0xFC, 0x00,
    0x00, 0x00, 0x7F, 0x0C, 0x7F, 0xCC, 0x7F, 0x00,
    0x3E, 0x6C, 0xCC, 0xFE, 0xCC, 0xCC, 0xCE, 0x00,
    0x78, 0x84, 0x00, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x00, 0xCC, 0x00, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x00, 0xE0, 0x00, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x78, 0x84, 0x00, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0xE0, 0x00, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0xCC, 0x00, 0xCC, 0xCC, 0x7C, 0x0C, 0xF8,
    0xC3, 0x18, 0x3C, 0x66, 0x66, 0x3C, 0x18, 0x00,
    0xCC, 0x00, 0xCC, 0xCC, 0xCC, 0xCC, 0x78, 0x00,
    0x18, 0x18, 0x7E, 0xC0, 0xC0, 0x7E, 0x18, 0x18,
    0x38, 0x6C, 0x64, 0xF0, 0x60, 0xE6, 0xFC, 0x00,
    0xCC, 0xCC, 0x78, 0x30, 0xFC, 0x30, 0xFC, 0x30,
    0xF8, 0xCC, 0xCC, 0xFA, 0xC6, 0xCF, 0xC6, 0xC3,
    0x0E, 0x1B, 0x18, 0x3C, 0x18, 0x18, 0xD8, 0x70,
    0x1C, 0x00, 0x78, 0x0C, 0x7C, 0xCC, 0x76, 0x00,
    0x38, 0x00, 0x70, 0x30, 0x30, 0x30, 0x78, 0x00,
    0x00, 0x1C, 0x00, 0x78, 0xCC, 0xCC, 0x78, 0x00,
    0x00, 0x1C, 0x00, 0xCC, 0xCC, 0xCC, 0x76, 0x00,
    0x00, 0xF8, 0x00, 0xB8, 0xCC, 0xCC, 0xCC, 0x00,
    0xFC, 0x00, 0xCC, 0xEC, 0xFC, 0xDC, 0xCC, 0x00,
    0x3C, 0x6C, 0x6C, 0x3E, 0x00, 0x7E, 0x00, 0x00,
    0x38, 0x6C, 0x6C, 0x38, 0x00, 0x7C, 0x00, 0x00,
    0x18, 0x00, 0x18, 0x18, 0x30, 0x66, 0x3C, 0x00,
    0x00, 0x00, 0x00, 0xFC, 0xC0, 0xC0, 0x00, 0x00,
    0x00, 0x00, 0x00, 0xFC, 0x0C, 0x0C, 0x00, 0x00,
    0xC6, 0xCC, 0xD8, 0x36, 0x6B, 0xC2, 0x84, 0x0F,
    0xC3, 0xC6, 0xCC, 0xDB, 0x37, 0x6D, 0xCF, 0x03,
    0x18, 0x00, 0x18, 0x18, 0x3C, 0x3C, 0x18, 0x00,
    0x00, 0x33, 0x66, 0xCC, 0x66, 0x33, 0x00, 0x00,
    0x00, 0xCC, 0x66, 0x33, 0x66, 0xCC, 0x00, 0x00,
    0x22, 0x88, 0x22, 0x88, 0x22, 0x88, 0x22, 0x88,
    0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA, 0x55, 0xAA,
    0xDB, 0xF6, 0xDB, 0x6F, 0xDB, 0x7E, 0xD7, 0xED,
    0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
    0x18, 0x18, 0x18, 0x18, 0xF8, 0x18, 0x18, 0x18,
    0x18, 0x18, 0xF8, 0x18, 0xF8, 0x18, 0x18, 0x18,
    0x36, 0x36, 0x36, 0x36, 0xF6, 0x36, 0x36, 0x36,
    0x00, 0x00, 0x00, 0x00, 0xFE, 0x36, 0x36, 0x36,
    0x00, 0x00, 0xF8, 0x18, 0xF8, 0x18, 0x18, 0x18,
    0x36, 0x36, 0xF6, 0x06, 0xF6, 0x36, 0x36, 0x36,
    0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36,
    0x00, 0x00, 0xFE, 0x06, 0xF6, 0x36, 0x36, 0x36,
    0x36, 0x36, 0xF6, 0x06, 0xFE, 0x00, 0x00, 0x00,
    0x36, 0x36, 0x36, 0x36, 0xFE, 0x00, 0x00, 0x00,
    0x18, 0x18, 0xF8, 0x18, 0xF8, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0xF8, 0x18, 0x18, 0x18,
    0x18, 0x18, 0x18, 0x18, 0x1F, 0x00, 0x00, 0x00,
    0x18, 0x18, 0x18, 0x18, 0xFF, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0xFF, 0x18, 0x18, 0x18,
    0x18, 0x18, 0x18, 0x18, 0x1F, 0x18, 0x18, 0x18,
    0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00,
    0x18, 0x18, 0x18, 0x18, 0xFF, 0x18, 0x18, 0x18,
    0x18, 0x18, 0x1F, 0x18, 0x1F, 0x18, 0x18, 0x18,
    0x36, 0x36, 0x36, 0x36, 0x37, 0x36, 0x36, 0x36,
    0x36, 0x36, 0x37, 0x30, 0x3F, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x3F, 0x30, 0x37, 0x36, 0x36, 0x36,
    0x36, 0x36, 0xF7, 0x00, 0xFF, 0x00, 0x00, 0x00,
    0x00, 0x00, 0xFF, 0x00, 0xF7, 0x36, 0x36, 0x36,
    0x36, 0x36, 0x37, 0x30, 0x37, 0x36, 0x36, 0x36,
    0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x00, 0x00,
    0x36, 0x36, 0xF7, 0x00, 0xF7, 0x36, 0x36, 0x36,
    0x18, 0x18, 0xFF, 0x00, 0xFF, 0x00, 0x00, 0x00,
    0x36, 0x36, 0x36, 0x36, 0xFF, 0x00, 0x00, 0x00,
    0x00, 0x00, 0xFF, 0x00, 0xFF, 0x18, 0x18, 0x18,
    0x00, 0x00, 0x00, 0x00, 0xFF, 0x36, 0x36, 0x36,
    0x36, 0x36, 0x36, 0x36, 0x3F, 0x00, 0x00, 0x00,
    0x18, 0x18, 0x1F, 0x18, 0x1F, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x1F, 0x18, 0x1F, 0x18, 0x18, 0x18,
    0x00, 0x00, 0x00, 0x00, 0x3F, 0x36, 0x36, 0x36,
    0x36, 0x36, 0x36, 0x36, 0xFF, 0x36, 0x36, 0x36,
    0x18, 0x18, 0xFF, 0x18, 0xFF, 0x18, 0x18, 0x18,
    0x18, 0x18, 0x18, 0x18, 0xF8, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x1F, 0x18, 0x18, 0x18,
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
    0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
    0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0,
    0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F,
    0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x76, 0xDC, 0xC8, 0xDC, 0x76, 0x00,
    0x00, 0x78, 0xCC, 0xF8, 0xCC, 0xF8, 0xC0, 0xC0,
    0x00, 0xFC, 0xCC, 0xC0, 0xC0, 0xC0, 0xC0, 0x00,
    0x00, 0x00, 0xFE, 0x6C, 0x6C, 0x6C, 0x6C, 0x00,
    0xFC, 0xCC, 0x60, 0x30, 0x60, 0xCC, 0xFC, 0x00,
    0x00, 0x00, 0x7E, 0xD8, 0xD8, 0xD8, 0x70, 0x00,
    0x00, 0x66, 0x66, 0x66, 0x66, 0x7C, 0x60, 0xC0,
    0x00, 0x76, 0xDC, 0x18, 0x18, 0x18, 0x18, 0x00,
    0xFC, 0x30, 0x78, 0xCC, 0xCC, 0x78, 0x30, 0xFC,
    0x38, 0x6C, 0xC6, 0xFE, 0xC6, 0x6C, 0x38, 0x00,
    0x38, 0x6C, 0xC6, 0xC6, 0x6C, 0x6C, 0xEE, 0x00,
    0x1C, 0x30, 0x18, 0x7C, 0xCC, 0xCC, 0x78, 0x00,
    0x00, 0x00, 0x7E, 0xDB, 0xDB, 0x7E, 0x00, 0x00,
    0x06, 0x0C, 0x7E, 0xDB, 0xDB, 0x7E, 0x60, 0xC0,
    0x38, 0x60, 0xC0, 0xF8, 0xC0, 0x60, 0x38, 0x00,
    0x78, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0xCC, 0x00,
    0x00, 0x7E, 0x00, 0x7E, 0x00, 0x7E, 0x00, 0x00,
    0x18, 0x18, 0x7E, 0x18, 0x18, 0x00, 0x7E, 0x00,
    0x60, 0x30, 0x18, 0x30, 0x60, 0x00, 0xFC, 0x00,
    0x18, 0x30, 0x60, 0x30, 0x18, 0x00, 0xFC, 0x00,
    0x0E, 0x1B, 0x1B, 0x18, 0x18, 0x18, 0x18, 0x18,
    0x18, 0x18, 0x18, 0x18, 0x18, 0xD8, 0xD8, 0x70,
    0x18, 0x18, 0x00, 0x7E, 0x00, 0x18, 0x18, 0x00,
    0x00, 0x76, 0xDC, 0x00, 0x76, 0xDC, 0x00, 0x00,
    0x38, 0x6C, 0x6C, 0x38, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
    0x0F, 0x0C, 0x0C, 0x0C, 0xEC, 0x6C, 0x3C, 0x1C,
    0x58, 0x6C, 0x6C, 0x6C, 0x6C, 0x00, 0x00, 0x00,
    0x70, 0x98, 0x30, 0x60, 0xF8, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x3C, 0x3C, 0x3C, 0x3C, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
  };


  void  Print_8x8_Mono( int  x, int  y, unsigned char  c )
  {
    int             offset, i;
    unsigned char*  bitm;

    if ( !Vio )
      return;

    offset = x + y * vio_ScanLineWidth * 8;
    bitm   = font_8x8 + (int)c * 8;

    for ( i = 0; i < 8; i++ )
    {
      Vio[offset] = *bitm;
      bitm++;
      offset += vio_ScanLineWidth;
    }
  }


  void  Print_8x8_Gray( int  x, int  y, unsigned char  c )
  {
    int             offset, i, bit;
    unsigned char*  bitm;

    if ( !Vio )
      return;

    offset = x * 8 + y * vio_ScanLineWidth * 8;
    bitm   = font_8x8 + (int)c * 8;

    for ( i = 0; i < 8; i++ )
    {
      bit = 0x80;
      while ( bit > 0 )
      {
        if ( bit & *bitm )
          Vio[offset] = (char)0x0f;
        else
          Vio[offset] = 0x00;

        bit >>= 1;
        offset++;
      }
      offset += vio_ScanLineWidth - 8;
      bitm++;
    }
  }


  int  SetGraphScreen( int  mode )
  {
    gcursor_x = 0;
    gcursor_y = 0;

    switch( mode )
    {
    case Graphics_Mode_Mono:
      if ( !Driver_Set_Graphics( mode ) )
        return FAILURE;

      gwindow_width  = vio_ScanLineWidth;
      gwindow_height = vio_Height / 8;

      Print_8x8_Char = Print_8x8_Mono;
      break;

    case Graphics_Mode_Gray:
      if ( !Driver_Set_Graphics( mode ) )
        return FAILURE;

      gwindow_width  = vio_ScanLineWidth / 8;
      gwindow_height = vio_Height / 8;

      Print_8x8_Char = Print_8x8_Gray;
      break;

    default:
      /* Invalid function call */
      return FAILURE;
    }

    return SUCCESS;
  }


  /* restore previous (or text) video mode */

  int  RestoreScreen( void )
  {
    gcursor_x      = 0;
    gcursor_y      = 0;
    gwindow_height = 0;
    gwindow_height = 0;

    return Driver_Restore_Mode();
  }


  void  Display_Bitmap_On_Screen( char*  buffer, int  line, int  col )
  {
    Driver_Display_Bitmap( buffer, line, col );
  }


  void  Goto_XY( int  x, int  y )
  {
    gcursor_x = x;
    gcursor_y = y;
  }


  void  Print_Str( char*  string )
  {
    if ( !string ) return;

    while ( *string )
    {
      switch ( *string )
      {
      case '\n':
        gcursor_x = 0;
        gcursor_y++;
        if ( gcursor_y > gwindow_height ) gcursor_y = 0;
        break;

      default:
        (*Print_8x8_Char)( gcursor_x, gcursor_y, *string );

        gcursor_x++;

        if ( gcursor_x >= gwindow_width )
        {
          gcursor_x = 0;
          gcursor_y++;

          if ( gcursor_y >= gwindow_height ) gcursor_y = 0;
        }
      }
      string++;
    }
  }


  void  Print_XY( int  x, int  y, char*  string )
  {
    Goto_XY( x, y );
    Print_Str( string );
  }









/* End */