Date: Wed, 22 May 2002 20:59:30 +0300
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: "Rafal 'Raf256' Maj" <admin AT raf256 DOT com>
Message-Id: <9003-Wed22May2002205929+0300-eliz@is.elta.co.il>
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CC: djgpp AT delorie DOT com
In-reply-to: <Xns9216C8DF4AB76adminraf256com@213.180.128.20>
Subject: Re: Win2000 and nearptr
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> From: "Rafal 'Raf256' Maj" <admin AT raf256 DOT com>
> Newsgroups: comp.os.msdos.djgpp
> Date: 22 May 2002 17:41:39 GMT
> 
> i'm using following code to acces text mode video memory, but this code 
> doesn't work in Win2k. How will look code giving same effect but on win2k ?
> 
> __djgpp_nearptr_enable();
> *((unsigned char*)0xB8000 + __djgpp_conventional_base + ((x+y*80)*2))='A';

You cannot use nearptr facilities on Windows 2000, Windows NT, and
Windows XP (and any other descendants of the NT family): those
versions of Windows don't allow to define a huge segment limit for
the data descriptor that is needed for nearptrs to work.

This is in the FAQ, btw: see section 3.3 there.