Browse Prior Art Database

Implementation of Program Transparency for Local Remote Readers Writers Consoles

IP.com Disclosure Number: IPCOM000078736D
Original Publication Date: 1973-Feb-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Boggs, JK: AUTHOR [+3]

Abstract

The control block structure (i. e. the interface data) presented to and used by the Job Entry Subsystem (JES) reader and JES writer, is identical for connection to devices attached either centrally or remotely. The difference between paths of connection is due to a new Job Control Language (JCL) parameter (TERM=RT), which is tested by OPEN and CLOSE processing. The results achieved are that the JES reader and JES writer programs are totally transparent to the method of device attachment, or to the location of devices attached.

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Implementation of Program Transparency for Local Remote Readers Writers Consoles

The control block structure (i. e. the interface data) presented to and used by the Job Entry Subsystem (JES) reader and JES writer, is identical for connection to devices attached either centrally or remotely. The difference between paths of connection is due to a new Job Control Language (JCL) parameter (TERM=RT), which is tested by OPEN and CLOSE processing. The results achieved are that the JES reader and JES writer programs are totally transparent to the method of device attachment, or to the location of devices attached.

The control block structure (i. e. interface data) presented to and used by JES reader, JES writer, command processing, and job scheduler is identical to the prior structure, except that a new piece of data is presented. This data is called a QID value. It is a two-byte binary number. If the QID value equals zero, then the message is to be sent out to the central console. If the QID value is nonzero, then the message is to be sent out to a remote terminal console (the specific terminal being identified by the QID value itself). Since the QID value is carried in descriptive control block information for all jobs, the results achieved are that the JES reader, JES writer, command processing, and Job scheduler are totally transparent to the method of console attachment, or the location of consoles attached.

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