The CharacterDevice Driver was developed as a loadable module and is automatically loaded during the start up of the Linux operation. Following system calls are supported: open() / close() / read() / write() and ioctl(). Synchronous as well as asynchronous calls are possible. Asynchronous calls are acknowledged with SIGNAL mechanism. Synchronous calls can be executed in parallel through threads. Select() cannot be supported. The distributions of Novell (openSUSE, SUSE Linux) and RedHat (i.e. WS4 and Fedora) are supported; others on request.

All intelligent COMSOFT PCI boards as well as the SNL2-E are supported.