Message-ID:	<01BBAE07.B5AC6980@slip00-65.btx.dtag.de>
From:	Daniel Jungbluth <danju AT t-online DOT de>
To:	"'DJGPP Mailing List'" <djgpp AT delorie DOT com>
Subject:	RE: How do I disable disable Virtual memory??
Date:	Sun, 29 Sep 1996 13:08:45 +-100
MIME-Version:	1.0

Peter Norlander wrote:

>I've just coded a keyboard interrupt in DJGPP 2.0. The problem is that
>the handler is written in C (not in asm) so i can't lock the wrapper and
>messages like "Page fault" appears on the screen. 
>I've heard that to solve this problem I could disable Virtual memory so 
>that my handler wont page.
>How can I do this?

You can disable virtual memory by setting the _CRT0_LOCK_MEMORY bit in the _ctr0_startup_flags variable:

#include <crt0.h>
int _crt0_startup_flags = _CRT0_LOCK_MEMORY;

/* your code */

>If I could disable virtual memory, then how much memory will be left for 
>my programs, I've got 8Mb physical memory (can I use all of that).

All the free physical memory can be used by your program.

-Daniel Jungbluth

e-mail: danju AT t-online DOT de
internet: http://www.t-online.de/home/index.htm

-semper fidelis

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