"Writing UNIX Device Drivers" provides application programmers with definitive information on writing device drivers for the UNIX operating system. It explains, through working examples, the issues related to the design and implementation of these important components of application programs. Written by an acknowledged expert, the book uses full source code listings of real devices to explain the underlying concepts. Complete source code is provided for 12 drivers, including: block drivers for a SCSI disk and a line printer a character driver for an intelligent serial I/O device a streams driver for a token-ring card Covering System V Releases 3 and 4, "Writing UNIX Device Drivers" provides essential practical advice for all UNIX applications programmers.