Date: Wed, 10 Dec 1997 17:18:15 -0800 (PST)
Message-Id: <199712110118.RAA12569@adit.ap.net>
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To: Charles Krug <charles AT pentek DOT com>, djgpp AT delorie DOT com
From: Nate Eldredge <eldredge AT ap DOT net>
Subject: Re: Storing text screens in protected mode?
Precedence: bulk

At 09:03  12/10/1997 -0500, Charles Krug wrote:
>One of my favorite real mode tricks is to have my text screens stored in
>an integer array.  Reletively simple to do in real mode--just set SI to
>point to the screen buffer, DI to my array, CX to the buffer size and
>"rep stosw" it over.  This was a very important trick on 8088
>systems--though it's less important now.
>
>Question--is it possible to get the base address of the screen buffer in
>protected mode or is it necessary to go back to real mode to do this
You can do something like this:

char buffer[4096]; /* or whatever */

movedata(_dos_ds,0xB8000,_my_ds(),buffer,4096); /* I think it's b8000 */

Read FAQ section 18.4 for more information, and the libc docs on `movedata'.

Nate Eldredge
eldredge AT ap DOT net