Why do I receive the following error message "Detected 0 devices expecting 1 device" when trying to use the Nios OCI debugger?

1. Open the Nios OCI Console by typing "nc" at the Nios SDK Shell prompt.
2. Type “sld info” at the Nios OCI Console prompt to detect the devices and nodes on the JTAG chain.You will see something like the following:
   
   1> sld info
   sld hw 0: ByteBlasterMV [LPT1]
      sld device 1: EP20K200C/E
          sld node 1: owner: First Silicon Solutions; ver: 0; Id: 21
      sld device 2: EPM3064A/7064AE
   
   
3. Note the hardware number, node number and device number of the First Silicon Solutions node. This is the FS2 OCI debug core which the host needs to communicate with during debugging sessions.
4. Type “sld set <hw number> <device number> <node number>” where <hw number>, <device number> and <node number> target the FS2 OCI debug core (from steps 1 and 2).
5. Type “closeport” to terminate communication with the target.
6. Type “openport sld” to reconnect to the target with the new parameters.

You should now be able to communicate with the target. For more information refer to First Silicon Solution’s Nios Getting Started document which you can find in the following location: <Nios install directory>\bin\fs2\doc\Nios-Getting-Started.pdf.