diff options
Diffstat (limited to 'sys/boot/pc98/boot0.5/start.s')
| -rw-r--r-- | sys/boot/pc98/boot0.5/start.s | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/sys/boot/pc98/boot0.5/start.s b/sys/boot/pc98/boot0.5/start.s new file mode 100644 index 0000000..211de14 --- /dev/null +++ b/sys/boot/pc98/boot0.5/start.s @@ -0,0 +1,62 @@ +# Copyright (c) KATO Takenori, 1999, 2000. +# +# All rights reserved. Unpublished rights reserved under the copyright +# laws of Japan. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer as +# the first lines of this file unmodified. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +# +# $FreeBSD$ +# + .global start + .code16 + + .text +start: + jmp start1 + + .org 0x2d4 +start1: + cli + movw %cs, %ax + movw %ax, %ds + movw %ss, iniss + movw %sp, inisp + movw %ax, %ss + movw $0xfffe, %sp + sti + xorw %ax, %ax + movw %ax, %es + call main + + cli + movw %cs:iniss, %ss + movw %cs:inisp, %sp + sti + int $0x1e + # NOTREACHED + lret + + .data + .global iniss, inisp +iniss: .word 0 +inisp: .word 0 |
