Talk:Class driver

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Computing  
WikiProject icon This article is within the scope of WikiProject Computing, a collaborative effort to improve the coverage of computers, computing, and information technology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
 ???  This article has not yet received a rating on the project's quality scale.
 ???  This article has not yet received a rating on the project's importance scale.
 

Class Drivers don't necessarily have to be object-oriented at all. and indeed class drivers predate OO programming, which is merely one way to implement class/port drivers.

under VMS, for example, Class drivers are used to implement common functions across many different types of devices.

quoting from: http://en.wikibooks.org/wiki/Software_Engineers_Handbook/Operating_Systems/VMS

"Drivers that had multiple physical layers were broken into "port/class" drivers. A class driver was a higher layer driver that implemented the common functionality across the differing ports. A port class driver specifically addressed a particular port type. Exemplifying this is the TTY driver, which was recoded as a CLASS (serial terminals) driver and PORT drivers (serial port, telnet port, console port, port over DEC's LAT protocol, etc.)"