Cyclades PC400 사용자 설명서

• Does the operating system detect the PC400 on boot? A message similar to

Cyclades-PC400 driver <version> <date> built <date>
PC400 #1,  RAM at 0xMMMM, IRQn, 64 channels starting from port 0
PC400 #2,  RAM at 0xMMMM, IRQn, 64 channels starting from port 64
etc.

should appear on boot.  If not,

• Is the board properly installed (physically)?  Check the connections inside the computer.
• Does your Linux operating system meet the requirements outlined at the beginning of chapter 3? The

kernel version can be discovered by typing the command 

uname 

-r

.

• The steps in chapter 4 related to the device files should be reviewed and the configuration files checked.
• Check the configurations modified using  “make config” or “make menuconfig” (details supplied in chapter

3). If they are incorrect, execute the commands 

make dep

 and then 

make bzlilo modules

modules_install

 again to rebuild the kernel.  Reboot the computer and see if the boards are detected.

• The simplest way to test a WAN connection is by pinging.  Type 

ping <IP address of device to be

pinged>

.  If a response is not received from the remote machine there is probably a problem with the link.

Make sure the remote machine is up by accessing it from another computer before following the directions
below.

• Is the cable properly connected and is the correct cable being used?
• Type the command 

ifconfig

. Do the devices set up for the board in  chapter 4 appear?

• Type the command 

netstat -rn

 to see the routing table. Have you defined a default gateway and/or have

a route that includes the remote device you are trying to reach?