mkflpimg.sh

一个小型的操作系统,采用gcc进行开发,几千行的代码,方便初学者学习

#!/bin/bash

##########################################################################
#
# Snixos Project version 1.0, 2003.6
# (C) Copyright 2003,2004,2005 Jockeyson,KeqiangGao <[e-mail]>
# All Rights Reserved.
# Distributed under the terms of the GNU General Public License.
#
# This program is a free and open source software and you can redistribute 
# it and/or modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation. As no any liability is assumed 
# for any incidental or consequential damages in connection with the 
# information or program fragments contained herein,so any exception arised
# is at your own risk. It is ABSOLUTELY WITHOUT ANY WARRANTY.
# Bug report please send to [e-mail] .
#
##########################################################################

# mkflpimg.sh:  build floppy.img for Snixos Project
# 		file named hzk16 in size 267616 required, also the py.mb
# Author : [e-mail]
# Time   : 2004.6

hzk16size=`wc -c hzk16 |gawk '{print $1}'`
pymbsize=`wc -c py.mb |gawk '{print $1}'`
ksize=`wc -c snixos.img |gawk '{print $1}'`

#track10=`expr 512 \"*\" 18 \"*\" 2 \"*\" 10`
track10=184320

#track4=`expr 512 \"*\" 18 \"*\" 2 \"*\" 40`
track40=737280

# disk144=`expr 18 \"*\" 2 \"*\" 512 \"*\" 80`
disk144=1474560

pad1size=`expr $track10 - $ksize` 

pad2size=`expr $track40 - $track10 - $hzk16size` 
pad3size=`expr $disk144 - $track40 - $pymbsize` 
#pad2size=`expr $disk144 - $track10 - $hzk16size` 

echo $hzk16size " " $ksize " " $track10 " " $disk144 " " $pad1size " " $pad2size " " $pad3size
# return
#pad1size=`expr 1474560 - $ksize` 
dd if=/dev/zero of=pad1 bs=$pad1size count=1
dd if=/dev/zero of=pad2 bs=$pad2size count=1
dd if=/dev/zero of=pad3 bs=$pad3size count=1
cat snixos.img pad1 hzk16 pad2 py.mb pad3 > floppy.img
rm -f pad*