Improved I/O Channel Utilization for Pseudo Full Duplex Data Communications Between a Data Processor and and I/O Adapter
Original Publication Date: 1983-Mar-01
Included in the Prior Art Database: 2005-Feb-07
A mechanism is described for improving the I/O channel utilization for a full duplex cycle stealing I/O device having only a single-device address. This mechanism makes available additional channel bandwidth for other I/O devices and enables the implementation of a full duplex-like capability using a single-device address I/O adapter. This mechanism will be described for the case of an IBM Series/1 data processor and its I/O channel.