Browse Prior Art Database

Autoreference Function

IP.com Disclosure Number: IPCOM000121294D
Original Publication Date: 1991-Aug-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 4 page(s) / 101K

Publishing Venue

IBM

Related People

Hall, JD: AUTHOR [+3]

Abstract

Disclosed is a program that is used to establish linkage between actual installed hardware in an IBM processor and various system control programs used by the processor. This function is required for systems utilizing the IBM Micro Channel* architecture. It has been expanded beyond the equivalent function provided for the Personal System/2* computer.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Autoreference Function

      Disclosed is a program that is used to establish linkage
between actual installed hardware in an IBM processor and various
system control programs used by the processor.  This function is
required for systems utilizing the IBM Micro Channel* architecture.
It has been expanded beyond the equivalent function provided for the
Personal System/2* computer.

      The AutoReference Function (ARF) is unique in that it provides
a single interface to installed hardware.  Various control functions
can access the data provided by this program to determine all
requirements for installed adapters in a system board.  New adapters
can be installed simply by providing data in two files which describe
the system resources required by the adapter.
      @PPPP.ADF   The Adapter Descriptor File [1].
      PPPP.ADS    The Adapter Descriptor System file.
Note:  PPPP is the 4 character hexadecimal ID assigned to the
adapter.

      A third (optional) executable file is needed if there are any
specific functions necessary that are not provided by the
AutoReference Function.  These files are known as Device Descripter
Routines (DDRs).
Examples of this are:
      o    Adapters with pluggable features (daughter cards).
      o    Adapters that communicate with peripherals that
          require unique setup or preconditioning.

      These files would have DEFPPPP.EXE as the filename and would be
in standard DOS EXE format.  These files are described in more detail
later.

      The AutoReference Function was developed using the Personal
System/2 Setup program [2] as a base.  Additional function was added
to:
      1.   build the Installed Hardware File that provides
          the interface to the remainder of the system
          components.
      2.   permit other functions to change configuration of
     installed
          hardware using sentinel file techniques.  This
     limits changes
          of the actual hardware configuration to the
     AutoReference
          Function for improved control.

      The AutoReference Function is run at each power-on to assure
that any hardware changes that took place, since the last power off,
are detected.  The normal...