wine/dlls/winedos/int11.c

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/*
* BIOS interrupt 11h handler
*
* Copyright 1996 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "dosexe.h"
#include "wine/unicode.h"
#include "wine/debug.h"
/**********************************************************************
* DOSVM_Int11Handler (WINEDOS16.117)
*
* Handler for int 11h (get equipment list).
*
*
* Borrowed from Ralph Brown's interrupt lists:
*
* bits 15-14: number of parallel devices
* bit 13: [Conv] Internal modem
* bit 12: reserved
* bits 11- 9: number of serial devices
* bit 8: reserved
* bits 7- 6: number of diskette drives minus one
* bits 5- 4: Initial video mode:
* 00b = EGA,VGA,PGA
* 01b = 40 x 25 color
* 10b = 80 x 25 color
* 11b = 80 x 25 mono
* bit 3: reserved
* bit 2: [PS] =1 if pointing device
* [non-PS] reserved
* bit 1: =1 if math co-processor
* bit 0: =1 if diskette available for boot
*
*
* Currently the only of these bits correctly set are:
*
* bits 15-14 } Added by William Owen Smith,
* bits 11-9 } wos@dcs.warwick.ac.uk
* bits 7-6
* bit 2 (always set) ( bit 2 = 4 )
* bit 1 } Robert 'Admiral' Coeyman
* All *nix systems either have a math processor or
* emulate one.
*/
void WINAPI DOSVM_Int11Handler( CONTEXT86 *context )
{
int diskdrives = 0;
int parallelports = 0;
int serialports = 0;
int x;
if (GetDriveTypeA("A:\\") == DRIVE_REMOVABLE) diskdrives++;
if (GetDriveTypeA("B:\\") == DRIVE_REMOVABLE) diskdrives++;
if (diskdrives) diskdrives--;
for (x=0; x < 9; x++)
{
HKEY hkey;
char option[10];
char temp[256];
/* serial port name */
strcpy( option, "COMx" );
option[3] = '1' + x;
option[4] = '\0';
/* default value */
strcpy( temp, "*" );
if (!RegOpenKeyA(HKEY_LOCAL_MACHINE,
"Software\\Wine\\Wine\\Config\\serialports",
&hkey))
{
DWORD type;
DWORD count = sizeof(temp);
RegQueryValueExA( hkey, option, 0, &type, temp, &count );
RegCloseKey( hkey );
}
if (strcmp(temp, "*") && *temp != '\0')
serialports++;
/* parallel port name */
strcpy( option, "LPTx" );
option[3] = '1' + x;
option[4] = '\0';
/* default value */
strcpy( temp, "*" );
if (!RegOpenKeyA(HKEY_LOCAL_MACHINE,
"Software\\Wine\\Wine\\Config\\parallelports",
&hkey))
{
DWORD type;
DWORD count = sizeof(temp);
RegQueryValueExA( hkey, option, 0, &type, temp, &count );
RegCloseKey( hkey );
}
if (strcmp(temp, "*") && *temp != '\0')
parallelports++;
}
if (serialports > 7) /* 3 bits -- maximum value = 7 */
serialports = 7;
if (parallelports > 3) /* 2 bits -- maximum value = 3 */
parallelports = 3;
SET_AX( context,
(diskdrives << 6) | (serialports << 9) | (parallelports << 14) | 0x06 );
}