/********************************************************************* * 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：
