How does TCP/IP run along side of QNET?
The QNX Net process allows other processes to register and communicate over the lan directly at a “raw” level. TCP/IP uses this interface to bypass QNET. A good example of another program that uses this feature is Cynosure’s Netsniff product. 26) How do I write a QNX Driver? This is a very big subject, but is a frequently asked question because it is not covered sufficiently in any of the standard QNX documentation. There are many resources available to driver writers, and much information is distributed throughout the QNX documentation that can help. Lots of free driver samples are available at ftp.qnx.com. First an overview. Since code that talks to hardware does not have to be in the kernel, any process that accesses hardware can be considered a driver. This muddies the definition of a driver, which under DOS, Win95, and NT is usually just a single “driver” module loaded with the OS at boot time. QNX drivers can be roughly divided into 5 categories. A) Fsys drivers B) Dev drivers C)
