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In <539bd0de.0203190041.693c09bb@posting.google.com>, peterhva@hotmail.com (Peter) writes:
>Hi,
>
>A program I wrote in TurboPascal 7 for DOS does not properly run on an
>Windows XP-home-edtion machine.
>The screen freezes, but the taskmanager says the program is active.
>This happens now and then.
>The program is nothing fancy. Mainly standard input/output.
>I runs on a FAT-partition of the harddisk.
>
>Peter

Is the TP7 in full-screen or a window?
Has focus been changed between windows?

    Under OS/2 Warp 4, A full screen TP7 IDE can lose its connection to the
keyboard if focus is switched between windows, or a DOS program is started
while a full screen TP7 is running a program in the background.  Mouse still
works to close down via file menu, but this can be extremely frustrating!

    It is possible XP suffers a similar reaction when the 'BIOS' routines get
relocated by the Operating system.  (TP7 saves the IRQ vectors at startup
but the O/S later shifts the routines elsewhere.  Result is a 'pointer to nowhere'
error when TP7 requires the routine.)

jims@vcn.bc.ca wrote in message news:<a7942f$5uf$1@luna.vcn.bc.ca>...
> In <539bd0de.0203190041.693c09bb@posting.google.com>, peterhva@hotmail.com (Peter) writes:
> >Hi,
> >A turbopascal7 for dos-program on a
> >Windows XP-home-edition machine.
> >The screen freezes, but the taskmanager says the program is active.
> >This happens now and then.
> 
> Is the TP7 in full-screen or a window?
It runs in full-screen mode.
Is it better to run it in a window?

I also use a routine to get input from the keyboard:
FUNCTION RDENKEFN : word;
{From ts@uwasa.fi}
VAR regs     : registers;
      keyboard : byte absolute $40:$96;
BEGIN
  rdenkefn := 0;
  IF ((keyboard SHR 4) AND 1) = 0 THEN exit;
  FillChar (regs, SizeOf(regs), 0);
  regs.ah := $10;
  Intr ($16, regs);
  rdenkefn := regs.ax;
END;  (* rdenkefn *)

And I use the {$I-} en {$I+} (the include file directive)

Could one of these two be a problem?

I also tried to run the program from a Windows 3.11-machine in a
little TCP/IP-network. On the 3.11-machine it works fine, but when I
start it from the XP-machine (shared drive) on the 3.11-machine the
program freezes again.

Peter

On 11 Apr 2002 13:16:47 -0700, PeterHva@hotmail.com (Peter) wrote:

>> Is the TP7 in full-screen or a window?
>It runs in full-screen mode.
>Is it better to run it in a window?

When I run it (or any DOS program) in a window on XP, the keyboard
response is so bad that it is virtually unusable.  It works normally
at full screen.  I haven't been able to find any way to nake it work
correctly in an XP window.
 

Jan Philips <jud.mccranie@mindspring.com> wrote in message news:<7glhbu85sdkenoilo4k5rtfc78mu9dkge2@4ax.com>...
> On 13 Apr 2002 15:21:43 -0700, peterhva@hotmail.com (Peter) wrote:
> 
> >The program still freezes, but I can stop it via the hotkey-function.
> >Sometimes I get a screen full of colors.
> >Is the videocard the problem?
> >It is a NVIDIA GeForce2 MX 200 (HP),
> >the pc is a hp paviljon 7925.
> 
> I don't know.  I've got a Pavilion 7935, but I don't have that type of
> problem (different video, though).

Hi Jan,

I replaced the video-card with an older one. No program-freezing so far.
Could you tell me what video-card you are using?

Thanks,
Peter

On 15 Apr 2002 13:31:52 -0700, peterhva@hotmail.com (Peter) wrote:

>I replaced the video-card with an older one. No program-freezing so far.
>Could you tell me what video-card you are using?

The video is built-in on an HP 7935.  It shows up as Savage S3, I
think.

In article <98gnbu83rvc0d0dpdteeftfrr54sqiegt2@4ax.com>, Jan Philips wrote:
> On 15 Apr 2002 13:31:52 -0700, peterhva@hotmail.com (Peter) wrote:
> 
>>I replaced the video-card with an older one. No program-freezing so far.
>>Could you tell me what video-card you are using?
> 
> The video is built-in on an HP 7935.  It shows up as Savage S3, I
> think.

There is a s3vbe (from Dietmar <something>) I had good experience with.

If you use VESA functionality, some S3 VESA implementations have clear-screen
function broken. Look for s3fix.

> There is a s3vbe (from Dietmar <something>) I had good experience with.
                                 ^^^^^^^^^^^

... Meschede.

Robert Riebisch
-- 
BTTR Software
http://www.bttr-software.de/
ICQ: 112.321.692