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PRUS101
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FCHKOS.PAS
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Pascal/Delphi Source File
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1994-12-19
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3KB
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115 lines
unit FCHKOS;
{ FIDO unit to detect different OS
(*************************************************************************)
RELEASE 1.00 - as first contained in the file PRUS101.LZH
by Matthias Tichy, 2:2440/210.14, GERMANY
--------------------------------------------
organized for Fido's PASCAL related echoes
--------------------------------------------
09/11/1994 to --/--/---- by Matthias Tichy, 2:2440/210.14, GERMANY
As far as third party copyrights are not violated this
source code is hereby placed to the public domain. Use
it whatever way you want, but use AT YOUR OWN RISK.
In case you should modify the source rather send your
modifications to the unit's current organizer (see above for
NM address) than to spread it on your own. This will help to
keep the unit updated and grant a certain standard to all
other users as well.
The unit is currently still under work. So it might greatly
benefit of your participation.
Those who contributed to the following piece of source,
listed in alphabethical order:
================================================================
Matthias Tichy, Joel Bergen, Andreas Otto ...
================================================================
YOUR NAME WILL APPEAR HERE IF YOU CONTRIBUTE USEFUL SOURCE.
Credits in your own programs are as welcome as unnecessary.
(***************************************************************************}
{$I FDEFINE.DEF} { Use the general include file for conditional defines and
common compiler directives ... }
{ ... and set the unit's specific defines aftwerwards. }
interface
type
TWindowsModes = (standard, enhanced);
var
NebenVersion : Byte;
HauptVersion : Byte;
Windows_Mode : TWindowsModes;
function isWindows : boolean;
function isOS2 : boolean;
function isDesqView : boolean;
implementation
uses dos;
var
R : Registers;
function isWindows : boolean;
begin
isWindows := false;
R.AX := $160A;
intr($2F, R);
if R.AX = 0 then
begin
HauptVersion := R.BH;
NebenVersion := R.BL;
case R.CX of
2 : Windows_Mode := standard;
3 : Windows_Mode := enhanced;
end;
isWindows := true;
end;
end;
function isOS2 : boolean;
begin
isOS2 := false;
if lo(dosVersion) > 10 then
begin
isOS2 := true;
hauptVersion := lo(dosversion) div 10;
nebenVersion := hi(dosversion);
end;
end;
function isDesqView : boolean;
{ Source is from Joel Bergen | change by me }
BEGIN
R.CX := $4445;
R.DX := $5351;
R.AX := $2B01;
INTR($21,R);
isDesqView := (R.AL<>$0FF);
IF R.AL<>$0ff THEN
begin
NebenVersion := R.BL;
HauptVersion := R.BH;
end;
END;
end.