Hi Wentao,
Here is the kernel booting message:
"Welcome to Altera SOPC Builder
Version 4.20, Built Tue Nov 2 09:42:35 PST 2004
Welcome to the Nios II Development Kit
Version 1.1, Built Wed Nov 24 20:13:46 PSt 2004
Example designs can be found in
\cygdrive\c\altera\kits\nios2\examples
<Executing user startup script: c:/altera/kits/nios2/user.bashrc
Microtronix Linux Extensions
Version 1.3, Built December 30th 2004
\cygdrive\c\altera\kits\nios2\examples
[SOPC Builder]$ nios2-terminal
nios2-terminal: connected to hardware targetusing JTAG nios2-terminal: UART on cable
nios2-terminal: "ByteBlasterII [LPT1], device 1, instance 0
nios2-terminal: Warning: The JTAG cable you are usingis not suported for Nios II systems. You may experience intermittent JTAG communication failures with this cable. Please use a USB Blaster revision B cable or another supported cable. Please refer to the file errata.txt included in the Nios II development kit documents directory for more information.
nios2-terminal: starting in terminal mode<Control-C exits> "
And it stops, wheareas when it works I've exactly the same message but after the last ligne, it starts linux.