Ubuntu Bochs boot.asm 测试

/*********************************************************************
*                   Ubuntu Bochs boot.asm 测试
* 说明：
*     本文仅仅是在Ubuntu下通过Bochs验证《自己动手编写操作系统》中的
* Boot Sector（引导区）的汇编代码，算是撘一个测试环境。
*
*                                   2016-7-22 深圳 南山平山村 曾剑锋
********************************************************************/

一、参考文档：
1. ubuntu下bochs安装使用 http://blog.csdn.net/xnwyd/article/details/7421703 2. bochs安装一系列问题 http://blog.chinaunix.net/uid-23817499-id-3418083.html 3. 自己动手写操作系统之1：bochs初步使用 http://blog.csdn.net/zhaodedong/article/details/51082128 
二、测试目录文件：
aplex@aplex:~/os/system$ ls
a.img  bochsout.txt  boot.asm  boot.bin

三、cat boot.asm
org 07c00h
mov ax, cs
mov ds, ax
mov es, ax
call DispStr
jmp $

DispStr:
mov ax, BootMessage
mov bp, ax
mov cx, 16
mov ax, 01301h
mov bx, 000ch
mov dl, 0
int 10h
ret
BootMessage:    db "Hello, OS world!"
times   510-($-$$)      db 0

dw 0xaa55

四、cat ~/.bochsrc
###############################################################
# Configuration file for Bochs
###############################################################

# how much memory the emulated machine will have
megs: 32

# filename of ROM images
romimage: file=/usr/share/bochs/BIOS-bochs-latest
vgaromimage: file=/usr/share/vgabios/vgabios.bin

# what disk images will be used
floppya: 1_44=a.img, status=inserted

# choose the boot disk.
boot: floppy

# where do we send log messages?
log: bochsout.txt

# disable the mouse
mouse: enabled=0

# enable key mapping, using US layout as default.
#keyboard_mapping: enabled=1, map=/usr/share/bochs/keymaps/x11-pc-us.map

display_library: sdl

五、命令运行流程：
aplex@aplex:~/os/system$ ls
a.img  bochsout.txt  boot.asm  boot.bin
aplex@aplex:~/os/system$ nasm boot.asm -o boot.bin
aplex@aplex:~/os/system$ bximage
========================================================================
bximage
Disk Image Creation Tool for Bochs
$Id: bximage.c,v 1.34 2009/04/14 09:45:22 sshwarts Exp $
========================================================================

Do you want to create a floppy disk image or a hard disk image?
Please type hd or fd. [hd] fd

Choose the size of floppy disk image to create, in megabytes.
Please type 0.16, 0.18, 0.32, 0.36, 0.72, 1.2, 1.44, 1.68, 1.72, or 2.88.
[1.44] 1.44
I will create a floppy image with
cyl=80
heads=2
sectors per track=18
total sectors=2880
total bytes=1474560

What should I name the image?
[a.img]

The disk image 'a.img' already exists.  Are you sure you want to replace it?
Please type yes or no. [no] yes

Writing: [] Done.

I wrote 1474560 bytes to a.img.

The following line should appear in your bochsrc:
floppya: image="a.img", status=inserted
aplex@aplex:~/os/system$ dd if=boot.bin of=a.img
记录了1+0 的读入
记录了1+0 的写出
512字节(512 B)已复制，0.00040927 秒，1.3 MB/秒
aplex@aplex:~/os/system$ bochs
========================================================================
Bochs x86 Emulator 2.4.6
Build from CVS snapshot, on February 22, 2011
Compiled at Jun  8 2013, 05:16:04
========================================================================
00000000000i[     ] LTDL_LIBRARY_PATH not set. using compile time default '/usr/lib/bochs/plugins'
00000000000i[     ] BXSHARE not set. using compile time default '/usr/share/bochs'
00000000000i[     ] reading configuration from /home/aplex/.bochsrc
00000000000i[     ] lt_dlhandle is 0x378ba30
00000000000i[PLGIN] loaded plugin libbx_sdl.so
00000000000i[     ] installing sdl module as the Bochs GUI
00000000000i[     ] using log file bochsout.txt
aplex@aplex:~/os/system$

六、效果图：