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Browse Prior Art Database

Method to Reduce Operator Interaction During MVS IPL

IP.com Disclosure Number: IPCOM000049781D
Original Publication Date: 1982-Jul-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 13K

Publishing Venue

IBM

Related People

Ogden, WR: AUTHOR

Abstract

It is desirable to be able to IPL (initial program load) and "bring up" an MVS (Multiple Virtual Storage) system as quickly as possible. One procedure which helps this process is to minimize the operator input during IPL. MVS does this by allowing many operator parameters to be stored in the "SYS1.PARMLIB' dataset where they are referenced by short codes. The operator must still enter these short codes during IPL.

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Method to Reduce Operator Interaction During MVS IPL

It is desirable to be able to IPL (initial program load) and "bring up" an MVS (Multiple Virtual Storage) system as quickly as possible. One procedure which helps this process is to minimize the operator input during IPL. MVS does this by allowing many operator parameters to be stored in the "SYS1.PARMLIB' dataset where they are referenced by short codes. The operator must still enter these short codes during IPL.

The following described method will allow the operator to bypass entering these codes during IPL while retaining the ability to select the codes on a day by day (or hour by hour) basis without making changes to the 'SYS1.PARMLIB' dataset.

This method requires that a data field be added to the 'IPL frame' of the system console. (This addition may be implemented completely by microcoding.) The field length is not critic 1; this description assumes four bytes. The operator must be allowed to enter any desired data into this field using the system console; entry would be in hexa decimal form. During the IPL microprogram sequence the contents of this field are transferred to a specified general-purpose register. Alternately, a fixed memory location can be used.) When the IPL sequence is complete, the data is available to the program which is invoked and given control by the IPL process.

This IPL program (often called the 'IPL text') then passes the data field along to the MVS initialization routines. There are many methods of using the data; the following i...