Browse Prior Art Database

System Resource Control Unit

IP.com Disclosure Number: IPCOM000111276D
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 4 page(s) / 89K

Publishing Venue

IBM

Related People

Brey, TM: AUTHOR [+3]

Abstract

This design offers the ability to control various functional facilities in a computer system. The facility can be enabled or disabled by the System Resource Control Unit (SRCU) according to the needs of the customer without any hardware modification. Thus saving part numbers that need to be manufactured, field stocking costs and customer system outage for the change in the field. It provides manufacturing a single production run and allows the model to be selected, securely, by software after the CEC has been manufactured.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 53% of the total text.

System Resource Control Unit

      This design offers the ability to control various functional
facilities in a computer system.  The facility can be enabled or
disabled by the System Resource Control Unit (SRCU) according to the
needs of the customer without any hardware modification.  Thus saving
part numbers that need to be manufactured, field stocking costs and
customer system outage for the change in the field.  It provides
manufacturing a single production run and allows the model to be
selected, securely, by software after the CEC has been manufactured.

The examples of functions that can be controlled are listed but not
limited to:

o   Performance

o   Architecture

o   Number or size of elements

    -   CPUs

    -   Storage

    -   Channels of any type

    -   Processor Controllers

o   Functional Facilities

    -   Vector

    -   JCM Op's

    -   Binary Floating Point

    -   Coupling Facility PR/SM features

      Fig. 1 shows the logic of the SRCU integrated with the computer
system which it controls.  Register "D" is the secure resource
register that stimulates the CEC into a unique model number.

      The four registers A, B, C, and D in the unit will be reset at
system Power-On Reset (POR) by the one cycle reset pulse generated by
the POR detection circuitry.  The POR detection is achieved by the
fact that register E will POR randomly when system power is applied
and the associated circuitry will make that detection.  It will
generate one and only one reset pulse to reset the registers in the
SRCU

      After the system powers on, the service processor will provide
a mechanism to enable all functions pertaining to a particular model
purchased which can be set by software at manufacturing time or via a
field upgrade process at the customer's location.  In either case,
PIN code (data loaded into Register's A and B) spe...