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Determination of Amount of Real Main Storage During System Control Program Initialization

IP.com Disclosure Number: IPCOM000050355D
Original Publication Date: 1982-Oct-01
Included in the Prior Art Database: 2005-Feb-10

Publishing Venue

IBM

Related People

Authors:
Moore, BB Rodell, JT Sutton, AJ Vowell, JD Wanish, PJ [+details]

Abstract

During initialization of the system control program (SCP), subsequent to the hardware IPL (Initial Program Load) process, a request is issued to a maintenance and service support facility (MSSF). The MSSF responds to the request by providing a STORAGE ADDRESS RANGE parameter. This parameter, given in units of megabytes, defines the installed high real storage value for the complex. During initialization this value is used to build system control blocks which represent all real storage.