The ChorusOS DebugServer chserver communicates with the target through a serial cable connection and must be run on the host to which the target is connected.
To identify the serial device, look in the /etc/remote file. This file contains references to remote systems that you can access through your local serial line. For more details, see remote(4). The device is usually named /dev/ttya or /dev/ttyb and will be the same device used by the tip or cu tools. The device must be readable and writable by all users.