Data Processing System with Subclasses of I/O Interruptions
Original Publication Date: 1983-Mar-01
Included in the Prior Art Database: 2005-Feb-06
Each subchannel of an I/O system is assigned to one of several interruption subclasses, and each subclass is masked and unmasked independently. The interruption subclasses permit different I/O devices to be handled at different levels of priority. Background.