VirtualBox

source: vbox/trunk/src/VBox/ValidationKit/bootsectors/bootsector-empty.asm@ 103131

Last change on this file since 103131 was 98103, checked in by vboxsync, 21 months ago

Copyright year updates by scm.

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File size: 1.8 KB
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1; $Id: bootsector-empty.asm 98103 2023-01-17 14:15:46Z vboxsync $
2;; @file
3; Empty bootsector can be used as example
4;
5
6;
7; Copyright (C) 2012-2023 Oracle and/or its affiliates.
8;
9; This file is part of VirtualBox base platform packages, as
10; available from https://www.virtualbox.org.
11;
12; This program is free software; you can redistribute it and/or
13; modify it under the terms of the GNU General Public License
14; as published by the Free Software Foundation, in version 3 of the
15; License.
16;
17; This program is distributed in the hope that it will be useful, but
18; WITHOUT ANY WARRANTY; without even the implied warranty of
19; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20; General Public License for more details.
21;
22; You should have received a copy of the GNU General Public License
23; along with this program; if not, see <https://www.gnu.org/licenses>.
24;
25; The contents of this file may alternatively be used under the terms
26; of the Common Development and Distribution License Version 1.0
27; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28; in the VirtualBox distribution, in which case the provisions of the
29; CDDL are applicable instead of those of the GPL.
30;
31; You may elect to license modified versions of this file under the
32; terms and conditions of either the GPL or the CDDL or both.
33;
34; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35;
36
37%include "iprt/asmdefs.mac"
38%include "iprt/x86.mac"
39
40
41;; The boot sector load address.
42%define BS_ADDR 0x7c00
43%define PDP_ADDR 0x9000
44%define PD_ADDR 0xa000
45
46
47BITS 16
48start:
49 ; Start with a jump just to follow the convention.
50 jmp short the_code
51 nop
52times 3ah db 0
53
54the_code:
55 ; put the code here
56
57
58
59hlt_again:
60 hlt
61 cli
62 jmp hlt_again
63
64 ;
65 ; The GDT.
66 ;
67padding:
68times 510 - (padding - start) db 0
69 db 055h, 0aah
70
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