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dosuname/int21h.c

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/************************************************************************
T h e O p e n W i n d o w s P r o j e c t
------------------------------------------------------------------------
Filename : int21h.c
Version : 0.04
Author(s) : Natalia Portillo
Component : OWP DOS subsystem - VER command
--[ Description ]-------------------------------------------------------
Says the DOS type and version.
--[ History ] ----------------------------------------------------------
0.00: Original file by Natalia Portillo. No DOS type.
0.01: Tested with following DOSes obtaining:
DOS DOS Version DOS OEM Code
DR-DOS 7.03 6.0 0x00
FreeDOS Beta 4 6.22 0xFD
MS-DOS 3.20 3.20 0x00
MS-DOS 3.30 3.30 0x00
MS-DOS 4.01 4.0 0xFF
MS-DOS 5.00 5.0 0xFF
PC-DOS 3.30 3.30 0x00
Windows 98 S.E. 7.10 0xFF
Windows 2000 5.0 0xFF
0.02: Tested with the following DOSes obtaining:
DOS DOS Version DOS OEM Code
PTS-DOS 2000 6.22 0x66
RxDOS 7.1.5 7.0 0x5E
0.03: Almost remade from zero.
Now uses four functions of INT-21h to get almost all
DOS version information.
All detect stuff moved to int21h.c.
All defines moved to ver.h
0.04: Implemented detection of DESQview, 4DOS and NDOS.
Implemented detection of the Windows version.
Implemented detection of OS/2.
Implemented detection of Windows Millenium (tested with beta 3).
--[ How to compile ]----------------------------------------------------
Recommended compiler Borland Turbo C++ 1.01
http://community.borland.com/museum
--[ Where to get help/information ]-------------------------------------
This archaic and abandoned software is opensource with no warranty
or help of any kind.
For inquiries contact claunia@claunia.com.
--[ License ] ----------------------------------------------------------
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License,or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not,write to the Free Software
Foundation,Inc.,59 Temple Place - Suite 330,Boston,MA 02111-1307,USA.
------------------------------------------------------------------------
Copyright (c) 2000 The Open Windows Project
*************************************************************************/
#include <dos.h>
void getdosver (int *DOS_FLAVOR, int *major, int *minor, int *sim_major, int *sim_minor, int *dos_oem, int *desq_ma, int *desq_mi, int *_4dos_ma, int *_4dos_mi, int *ndos_ma, int *ndos_mi, int *win_ma, int *win_mi, int *win_mode)
{
union REGS regs;
int dos_temp, nt_flag;
nt_flag=0;
*DOS_FLAVOR=0;
regs.x.ax = 0x3306; /* Set function 3306h */
int86 (0x21,&regs,&regs); /* Call INT 21h */
if(regs.h.al!=255) /* If DOS >= 5.0 */
{
*major = regs.h.bl; /* Major True version */
*minor = regs.h.bh; /* Minor True version */
if(regs.h.bh==50)
{
*minor = 0;
nt_flag = 1;
}
regs.h.ah = 0x30;
regs.h.al = 0x00;
int86 (0x21,&regs,&regs);
dos_temp = regs.h.bh; /* Set DOS type */
if(dos_temp == 253) /* Checks for FreeDOS */
{
*major = regs.h.bl; /* Get FreeDOS kernel version */
*minor = 0; /* Put minor version to zero */
}
*sim_major = regs.h.al; /* Set the simulated major version */
*sim_minor = regs.h.ah; /* Set the simulated minor version */
}
else {
regs.h.ah = 0x30;
regs.h.al = 0x00;
int86 (0x21,&regs,&regs);
dos_temp = regs.h.bh; /* Set DOS type */
*major = regs.h.al; /* Set the simulated major version */
*minor = regs.h.ah; /* Set the simulated minor version */
*sim_major = 0;
*sim_minor = 0;
}
/* Set DOS to DOS type */
if(dos_temp == 0 && *major <= 3)
{
*DOS_FLAVOR=12;
}
if(dos_temp == 0 && *major >= 4)
{
*DOS_FLAVOR=2;
}
if(dos_temp == 0 && *major >= 10)
{
*DOS_FLAVOR=7;
}
if(dos_temp == 0xff && *major <= 6)
{
*DOS_FLAVOR=1;
}
if(dos_temp == 0xff && *major == 7)
{
if(*minor == 0)
{
*DOS_FLAVOR=5;
}
if(*minor == 10)
{
*DOS_FLAVOR=13;
}
}
if(dos_temp == 0xff && *major == 8)
{
*DOS_FLAVOR=14;
}
if(dos_temp == 253)
{
*DOS_FLAVOR=4;
}
if(dos_temp == 0xff && nt_flag == 1)
{
*DOS_FLAVOR=6;
}
if(dos_temp == 0x66)
{
*DOS_FLAVOR=8;
}
if(dos_temp == 0x5E)
{
*DOS_FLAVOR=9;
}
/* Check for Concurrent DOS versions */
regs.x.ax = 0x4451; /* Set function 4451h */
int86 (0x21,&regs,&regs); /* Call INT 21h */
if(regs.h.al==0x32)
{
*major=3;
*minor=2;
*DOS_FLAVOR=10;
}
if(regs.h.al==0x41)
{
*major=4;
*minor=1;
*DOS_FLAVOR=10;
}
if(regs.h.al==0x50)
{
*major=5;
*minor=0;
*DOS_FLAVOR=10;
}
if(regs.h.al==0x60)
{
*major=6;
*minor=0;
*DOS_FLAVOR=10;
}
if(regs.h.al==0x62)
{
*major=6;
*minor=2;
*DOS_FLAVOR=10;
}
if(regs.h.al==0x66)
{
*major=5;
*minor=1;
*DOS_FLAVOR=6;
}
if(regs.h.al==0x67)
{
*major=5;
*minor=1;
*DOS_FLAVOR=10;
}
/* End of check for Concurrent DOS versions */
/* Check for DR-DOS versions */
regs.x.ax = 0x4452; /* Set function 4452h */
int86 (0x21,&regs,&regs); /* Call INT 21h */
if(regs.h.al==0x41)
{
*major=1;
*minor=2;
*DOS_FLAVOR=3;
}
if(regs.h.al==0x60)
{
*major=2;
*minor=0;
*DOS_FLAVOR=3;
}
if(regs.h.al==0x63)
{
*major=3;
*minor=41;
*DOS_FLAVOR=3;
}
if(regs.h.al==0x64)
{
*major=3;
*minor=42;
*DOS_FLAVOR=3;
}
if(regs.h.al==0x65)
{
*major=5;
*minor=0;
*DOS_FLAVOR=3;
}
if(regs.h.al==0x67)
{
*major=6;
*minor=0;
*DOS_FLAVOR=3;
}
if(regs.h.al==0x71)
{
*major=6;
*minor=0;
*DOS_FLAVOR=3;
}
if(regs.h.al==0x72)
{
*major=7;
*minor=0;
*DOS_FLAVOR=11;
}
if(regs.h.al==0x73)
{
*major=7;
*minor=0;
*DOS_FLAVOR=3;
}
/* End of check for DR-DOS_FLAVOR versions */
*dos_oem=dos_temp;
*desq_ma=0;
*desq_mi=0;
regs.h.ah = 0x2b; /* Set function */
regs.x.cx = 0x4445; /* Set function */
regs.x.dx = 0x5351; /* Set function */
regs.h.al = 0x01; /* Set function */
int86 (0x21,&regs,&regs); /* Call INT 21h */
if(regs.h.al!=0xFF)
{
*desq_ma=regs.h.bh;
*desq_mi=regs.h.bl;
}
*_4dos_ma=0;
*_4dos_mi=0;
regs.h.bh = 0x00; /* Set function */
regs.x.ax = 0xD44D; /* Set 4DOS API */
int86 (0x2F,&regs,&regs); /* Call INT 2Fh */
if(regs.x.ax==0x44DD)
{
*_4dos_ma=regs.h.bl;
*_4dos_mi=regs.h.bh;
}
*ndos_ma=0;
*ndos_mi=0;
regs.h.bh = 0x00; /* Set function */
regs.x.ax = 0xE44D; /* Set 4DOS API (Well, NDOS is the Norton version of 4DOS */
int86 (0x2F,&regs,&regs); /* Call INT 2Fh */
if(regs.x.ax==0x44EE)
{
*ndos_ma=regs.h.bl;
*ndos_mi=regs.h.bh;
}
*win_ma=0;
*win_mi=0;
*win_mode=0;
regs.x.ax = 0x160A; /* Set function (Windows 3.1 or upper) */
int86 (0x2F,&regs,&regs); /* Call INT 2Fh */
if(regs.x.ax==0x0000)
{
*win_ma=regs.h.bh;
*win_mi=regs.h.bl;
*win_mode=regs.x.cx;
}
else
{
regs.x.ax = 0x1600; /* Set function (Windows/386 or upper in enhanced mode)*/
int86 (0x2F,&regs,&regs); /* Call INT 2Fh */
if(regs.h.al==0x01 || regs.h.al==0xFF)
{
*win_ma=2;
*win_mi=regs.h.ah;
*win_mode=3;
}
else if(regs.h.al >= 3)
{
*win_ma=regs.h.al;
*win_mi=regs.h.ah;
*win_mode=3;
}
else
*win_ma=*win_mi=0;
}
}
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