dlls/winedos/int11.c

   1 /*
   2  * BIOS interrupt 11h handler
   3  *
   4  * Copyright 1996 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <stdarg.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winreg.h"
  32 #include "dosexe.h"
  33 #include "wine/unicode.h"
  34 #include "wine/debug.h"
  35
  36
  37 /**********************************************************************
  38  *          DOSVM_Int11Handler (WINEDOS16.117)
  39  *
  40  * Handler for int 11h (get equipment list).
  41  *
  42  *
  43  * Borrowed from Ralph Brown's interrupt lists:
  44  *
  45  *   bits 15-14: number of parallel devices
  46  *   bit     13: [Conv] Internal modem
  47  *   bit     12: reserved
  48  *   bits 11- 9: number of serial devices
  49  *   bit      8: reserved
  50  *   bits  7- 6: number of diskette drives minus one
  51  *   bits  5- 4: Initial video mode:
  52  *                 00b = EGA,VGA,PGA
  53  *                 01b = 40 x 25 color
  54  *                 10b = 80 x 25 color
  55  *                 11b = 80 x 25 mono
  56  *   bit      3: reserved
  57  *   bit      2: [PS] =1 if pointing device
  58  *               [non-PS] reserved
  59  *   bit      1: =1 if math co-processor
  60  *   bit      0: =1 if diskette available for boot
  61  *
  62  *
  63  * Currently the only of these bits correctly set are:
  64  *
  65  *   bits 15-14   } Added by William Owen Smith,
  66  *   bits 11-9    } wos@dcs.warwick.ac.uk
  67  *   bits 7-6
  68  *   bit  2       (always set)  ( bit 2 = 4 )
  69  *   bit  1       } Robert 'Admiral' Coeyman
  70  *                  All *nix systems either have a math processor or
  71  *                   emulate one.
  72  */
  73 void WINAPI DOSVM_Int11Handler( CONTEXT86 *context )
  74 {
  75     int diskdrives = 0;
  76     int parallelports = 0;
  77     int serialports = 0;
  78     int x;
  79
  80     if (GetDriveTypeA("A:\\") == DRIVE_REMOVABLE) diskdrives++;
  81     if (GetDriveTypeA("B:\\") == DRIVE_REMOVABLE) diskdrives++;
  82     if (diskdrives) diskdrives--;
  83
  84     for (x=0; x < 9; x++)
  85     {
  86         HKEY hkey;
  87         char option[10];
  88         char temp[256];
  89
  90         /* serial port name */
  91         strcpy( option, "COMx" );
  92         option[3] = '1' + x;
  93         option[4] = '\0';
  94
  95         /* default value */
  96         strcpy( temp, "*" );
  97
  98         if (!RegOpenKeyA(HKEY_LOCAL_MACHINE,
  99                          "Software\\Wine\\Wine\\Config\\serialports",
 100                          &hkey))
 101         {
 102             DWORD type;
 103             DWORD count = sizeof(temp);
 104             RegQueryValueExA( hkey, option, 0, &type, temp, &count );
 105             RegCloseKey( hkey );
 106         }
 107
 108         if (strcmp(temp, "*") && *temp != '\0')
 109             serialports++;
 110
 111         /* parallel port name */
 112         strcpy( option, "LPTx" );
 113         option[3] = '1' + x;
 114         option[4] = '\0';
 115
 116         /* default value */
 117         strcpy( temp, "*" );
 118
 119         if (!RegOpenKeyA(HKEY_LOCAL_MACHINE,
 120                          "Software\\Wine\\Wine\\Config\\parallelports",
 121                          &hkey))
 122         {
 123             DWORD type;
 124             DWORD count = sizeof(temp);
 125             RegQueryValueExA( hkey, option, 0, &type, temp, &count );
 126             RegCloseKey( hkey );
 127         }
 128
 129         if (strcmp(temp, "*") && *temp != '\0')
 130             parallelports++;
 131     }
 132
 133     if (serialports > 7) /* 3 bits -- maximum value = 7 */
 134         serialports = 7;
 135
 136     if (parallelports > 3) /* 2 bits -- maximum value = 3 */
 137         parallelports = 3;
 138
 139     SET_AX( context,
 140             (diskdrives << 6) | (serialports << 9) | (parallelports << 14) | 0x06 );
 141 }