Message-ID: <000a01c0d8be$84a58600$f8089d3e@iron>
From: "Thomas Schachtner" <thomas DOT schachtner AT gmx DOT de>
To: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Cc: <djgpp AT delorie DOT com>
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Subject: Re: read a specific memory address
Date: Wed, 9 May 2001 21:30:32 +0200
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Reply-To: djgpp AT delorie DOT com

> > I checked the return values, but none of them failed...
> > After modifying the program (making it smaller) the first DMI function
> > fails - but only with Windows 2000....
>
> What is that first function--is that __dpmi_physical_address_mapping?

yes, it fails, but only on Windows 2000, and only after changing my program;
in the original configuration it didn't fail....

> If that fails, you cannot continue.

What can I do against this failure?

> What are the values of dmi.start and dmi.length printed by this
> snippet from your program:
>
> >   mi.address = dmi.start;
> >   mi.size    = dmi.length;
> >
> >   printf ("mi.address = %08X\n", dmi.start);
> >   printf ("mi.size    = %08X\n", dmi.length);
> >
> >   if (__dpmi_physical_address_mapping (&mi) == -1)

Sorry, I am already at home and do not know the values by heart, but
dmi.start is 0x0BFF0000 and dmi.length is something like 0x0220 or 0x0520
...

And: Why does this function fail with Windows 2000 and does NOT fail with
Windows Me?