Browse Prior Art Database

Peripheral System Mode Controls

IP.com Disclosure Number: IPCOM000051864D
Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-11

Publishing Venue

IBM

Related People

Authors:
Cary, CR Cole, DC Videki, ER [+details]

Abstract

This article describes an arrangement in which hosts using a peripheral system have a plurality of devices connected by a control unit with a channel adapter connected to a channel of the host providing a plurality of functions indicated by other circuits OC. Circuits OC are connected to data flow circuit DF under control of a microcomputer. In many peripheral subsystems, a plurality of modes of operation can be employed, such as recording signals, reading signals, different data densities to be recorded, the extent of recording, the character of recording, and the like. For enhancing operations for a mode command, it is desirable to have a fast-acting channel adapter do a quick analysis before involving the microcomputer.