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 "miscemu.h"
  33 #include "msdos.h"
  34 #include "file.h"
  35 #include "wine/unicode.h"
  36 #include "wine/debug.h"
  37
  38
  39 /**********************************************************************
  40  *          DOSVM_Int11Handler (WINEDOS16.117)
  41  *
  42  * Handler for int 11h (get equipment list).
  43  *
  44  *
  45  * Borrowed from Ralph Brown's interrupt lists:
  46  *
  47  *   bits 15-14: number of parallel devices
  48  *   bit     13: [Conv] Internal modem
  49  *   bit     12: reserved
  50  *   bits 11- 9: number of serial devices
  51  *   bit      8: reserved
  52  *   bits  7- 6: number of diskette drives minus one
  53  *   bits  5- 4: Initial video mode:
  54  *                 00b = EGA,VGA,PGA
  55  *                 01b = 40 x 25 color
  56  *                 10b = 80 x 25 color
  57  *                 11b = 80 x 25 mono
  58  *   bit      3: reserved
  59  *   bit      2: [PS] =1 if pointing device
  60  *               [non-PS] reserved
  61  *   bit      1: =1 if math co-processor
  62  *   bit      0: =1 if diskette available for boot
  63  *
  64  *
  65  * Currently the only of these bits correctly set are:
  66  *
  67  *   bits 15-14   } Added by William Owen Smith,
  68  *   bits 11-9    } wos@dcs.warwick.ac.uk
  69  *   bits 7-6
  70  *   bit  2       (always set)  ( bit 2 = 4 )
  71  *   bit  1       } Robert 'Admiral' Coeyman
  72  *                  All *nix systems either have a math processor or
  73  *                   emulate one.
  74  */
  75 void WINAPI DOSVM_Int11Handler( CONTEXT86 *context )
  76 {
  77     int diskdrives = 0;
  78     int parallelports = 0;
  79     int serialports = 0;
  80     int x;
  81
  82     if (GetDriveTypeA("A:\\") == DRIVE_REMOVABLE) diskdrives++;
  83     if (GetDriveTypeA("B:\\") == DRIVE_REMOVABLE) diskdrives++;
  84     if (diskdrives) diskdrives--;
  85
  86     for (x=0; x < 9; x++)
  87     {
  88         HKEY hkey;
  89         char option[10];
  90         char temp[256];
  91
  92         /* serial port name */
  93         strcpy( option, "COMx" );
  94         option[3] = '1' + x;
  95         option[4] = '\0';
  96
  97         /* default value */
  98         strcpy( temp, "*" );
  99
 100         if (!RegOpenKeyA(HKEY_LOCAL_MACHINE,
 101                          "Software\\Wine\\Wine\\Config\\serialports",
 102                          &hkey))
 103         {
 104             DWORD type;
 105             DWORD count = sizeof(temp);
 106             RegQueryValueExA( hkey, option, 0, &type, temp, &count );
 107             RegCloseKey( hkey );
 108         }
 109
 110         if (strcmp(temp, "*") && *temp != '\0')
 111             serialports++;
 112
 113         /* parallel port name */
 114         strcpy( option, "LPTx" );
 115         option[3] = '1' + x;
 116         option[4] = '\0';
 117
 118         /* default value */
 119         strcpy( temp, "*" );
 120
 121         if (!RegOpenKeyA(HKEY_LOCAL_MACHINE,
 122                          "Software\\Wine\\Wine\\Config\\parallelports",
 123                          &hkey))
 124         {
 125             DWORD type;
 126             DWORD count = sizeof(temp);
 127             RegQueryValueExA( hkey, option, 0, &type, temp, &count );
 128             RegCloseKey( hkey );
 129         }
 130
 131         if (strcmp(temp, "*") && *temp != '\0')
 132             parallelports++;
 133     }
 134
 135     if (serialports > 7) /* 3 bits -- maximum value = 7 */
 136         serialports = 7;
 137
 138     if (parallelports > 3) /* 2 bits -- maximum value = 3 */
 139         parallelports = 3;
 140
 141     SET_AX( context,
 142             (diskdrives << 6) | (serialports << 9) | (parallelports << 14) | 0x06 );
 143 }