VirtualBox

source: vbox/trunk/src/VBox/ValidationKit/bootsectors/bootsector-empty.asm@ 67954

Last change on this file since 67954 was 62484, checked in by vboxsync, 8 years ago

(C) 2016

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  • Property svn:keywords set to Author Date Id Revision
File size: 1.5 KB
Line 
1; $Id: bootsector-empty.asm 62484 2016-07-22 18:35:33Z vboxsync $
2;; @file
3; Empty bootsector can be used as example
4;
5
6;
7; Copyright (C) 2012-2016 Oracle Corporation
8;
9; This file is part of VirtualBox Open Source Edition (OSE), as
10; available from http://www.virtualbox.org. This file is free software;
11; you can redistribute it and/or modify it under the terms of the GNU
12; General Public License (GPL) as published by the Free Software
13; Foundation, in version 2 as it comes in the "COPYING" file of the
14; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16;
17; The contents of this file may alternatively be used under the terms
18; of the Common Development and Distribution License Version 1.0
19; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20; VirtualBox OSE distribution, in which case the provisions of the
21; CDDL are applicable instead of those of the GPL.
22;
23; You may elect to license modified versions of this file under the
24; terms and conditions of either the GPL or the CDDL or both.
25;
26
27%include "iprt/asmdefs.mac"
28%include "iprt/x86.mac"
29
30
31;; The boot sector load address.
32%define BS_ADDR 0x7c00
33%define PDP_ADDR 0x9000
34%define PD_ADDR 0xa000
35
36
37BITS 16
38start:
39 ; Start with a jump just to follow the convention.
40 jmp short the_code
41 nop
42times 3ah db 0
43
44the_code:
45 ; put the code here
46
47
48
49hlt_again:
50 hlt
51 cli
52 jmp hlt_again
53
54 ;
55 ; The GDT.
56 ;
57padding:
58times 510 - (padding - start) db 0
59 db 055h, 0aah
60
61
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