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Omniwafer

IP.com Disclosure Number: IPCOM000082068D
Original Publication Date: 1974-Sep-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 13K

Publishing Venue

IBM

Related People

Roth, JP: AUTHOR

Abstract

A salient problem presented in the designing and fabricating a computer which is built of microminiature logic and components is the fact that each "chip" of logic is unique, i.e., each chip does not have the same uniform and consistent pattern. In addition, the design of a chip which performs both logic and memory functions may change because of faults discovered in the design, and because of changes in the design itself to effect improvements. As a practical matter, such changes in the design may require a period in the order of months which is undesirable and incompatible with the so-called "speedy turnaround time", which is necessary in large-scale computer development.

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Omniwafer

A salient problem presented in the designing and fabricating a computer which is built of microminiature logic and components is the fact that each "chip" of logic is unique, i.e., each chip does not have the same uniform and consistent pattern. In addition, the design of a chip which performs both logic and memory functions may change because of faults discovered in the design, and because of changes in the design itself to effect improvements. As a practical matter, such changes in the design may require a period in the order of months which is undesirable and incompatible with the so-called "speedy turnaround time", which is necessary in large-scale computer development.

One technique which has been proposed for overcoming the foregoing problem is the employment of the "universal functional object", as is disclosed in the publication "Computer Design Architecture II", J. P. Roth, RA 48, March 1, 1973, pp.114-132, published by the IBM Corporation. Such universal scheme can be specialized to perform any of an extremely wide category of functions. It also has the property that, if failures are detected in the universal functional object, then those cells or connections within the object can be automatically and logically removed and replacements, appropriately specialized to perform desired functions, can be automatically switched in to effect repair.

A disadvantage presented in the use of the aforedescribed universal functional object scheme is that an undesirable amount of circuitry is required for a design of any given function, as compared to a "simplex" design. In addition, failures of a chip or wafer employing such universal functional object scheme are highly conditional in that, if a...