本人还是学生，买不起硬件，想先模拟一下mini2440，照着教程做了，看了修正版的，还要再找其他帖子来看，终于要运行qemu了，就在这里又出错了。代码如下，求高人指点

Starting in mini2440
mini2440/../arm-softmmu/qemu-system-arm -M mini2440 -serial stdio -mtdblock

mini2440/mini2440_nand128.bin -show-cursor -usb -usbdevice keyboard -usbdevice mouse -net

nic,vlan=0 -net tap,vlan=0,ifname=tap0,script=./qemu-ifup,downscript=./qemu-ifdown -monitor

telnet::5555,server,nowait
TUNSETIFF: Device or resource busy
mini2440_init: Boot mode: NAND
S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57
QEMU: ee24c08_init
DM9000: INIT QEMU MAC : 52:54:00:12:34:56
QEMU mini2440_reset: loaded default u-boot from NAND
QEMU mini2440_reset: loaded override u-boot (size 3ea00)
mini2440/mini2440_start.sh: line 33:  4856 浮点数例外         $cmd

你在什么系统上用的qemu? 我想这个qemu只在Ubuntu或Debian上验证过。

因为学习需要，所以用的是Fedora11
现在在装ubuntu了，再试试

在ubuntu10.10上编译顺利了些，但是还是提示“浮点数例外”，怎么办呢

TUNSETIFF: Device or resource busy
mini2440_init: Boot mode: NAND
S3C: CLK=240 HCLK=240 PCLK=240 UCLK=57
QEMU: ee24c08_init
DM9000: INIT QEMU MAC : 52:54:00:12:34:56
QEMU mini2440_reset: loaded default u-boot from NAND
QEMU mini2440_reset: loaded override u-boot (size 3a800)
QEMU mini2440_reset: loaded ./mini2440/uImage (size 1f0200)
Floating point exception

唉，对于这个问题，我也很郁闷的，这个现象的出现次数是很随机的，有时候出现，有时候又很正常，特别是我离开电脑一段时间，再回来实验又好了，但是有时候连重启机器，都不管用！

哈哈哈！！！我终于解决这个问题啦！我在http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.8_Technical_Notes/kvm.html这里面看到一段话：


During the boot process inside the qemu-kvm utility, the screen was resized to the height of 1. A mouse click at this point caused a division by zero (the SIGFPE signal was sent) when calculating the absolute position of the pointer from the pixel. As a consequence, qemu-kvm terminated with the "Floating point exception" error. With this update, mouse click coordinates are forced to return values from the middle of the screen, so that qemu-kvm no longer terminates in the described scenario.


它的意思是说，终端命令行的屏幕太小了，需要把它放大一些，才可以用，所以当我把终端放大到全屏的时候，这个问题瞬间就被解决了，大家可以好好的试一试，反正我这边利用这种方法，暂时是没有问题的！