Browse Prior Art Database

Personal Computer Processor Upgrading

IP.com Disclosure Number: IPCOM000113023D
Original Publication Date: 1994-Jul-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Barnhart, SR: AUTHOR [+5]

Abstract

Described is a hardware implementation to provide a means of upgrading a Personal Computer (PC) system to attain improved performance by using newer technologies. The implementation involves changing the processor card so as to enable users to upgrade a PC system, such as the IBM Model 90 and 95*, to attain the improved performance.

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This is the abbreviated version, containing approximately 100% of the total text.

Personal Computer Processor Upgrading

      Described is a hardware implementation to provide a means of
upgrading a Personal Computer (PC) system to attain improved
performance by using newer technologies.  The implementation involves
changing the processor card so as to enable users to upgrade a PC
system, such as the IBM Model 90 and 95*, to attain the improved
performance.

      The upgrading involves the revision of the processor card so
that the card will contain a 486DX** microprocessor operating at an
internal frequency of 66 Mhz with an external bus frequency of 33
Mhz.  In addition, a second element includes a store-in cache
utilizing the Intel** C5/C8 chipset which operates in a serial path
between the microprocessor and the remaining elements of the
processor card.  A third element, the BIU logic, is incorporated to
interface with the Intel store-in cache to a Very Large Semiconductor
Integrated (VLSI) component containing a common interface that is
used to support the SIMM memory interface and the Micro Channel* (MC)
interface.  The Figure shows a block diagram of the key elements
contained in the processor card upgrading for the IBM Mod 90 and 95.

*   Trademark of IBM Corp.

** Trademark of Intel Corporation.