MARY BROWN, D.C.
Chiropractic at Poteet Jourdanton Fwy, San Antonio, TX

7971161, Jun 28, 2011

Jan 25, 2008

12/019718

Bartholomew Blaner - Underhill Center VT, US
Mary D. Brown - Austin TX, US
William E. Burky - Austin TX, US
Todd A. Venton - Austin TX, US

International Business Machines Corporation - Armonk NY

G06F 17/50, G06F 1/04

716100, 716101, 713500

A method for implementing speculative clock gating of digital logic circuits in a multiple stage pipeline design includes generating, in a first pipeline stage n, a valid control signal that is input to a first register in a second pipeline stage n+1, the valid control signal indicative of when an operation is qualified to be performed by the second pipeline stage n+1; and generating, in the first pipeline stage, a speculative valid control signal that is used to gate a clock signal to a plurality of additional registers in the second pipeline stage, wherein the speculative valid control signal is generated using only a subset of a total number of control inputs used in generating the valid control signal, and wherein the clock signal is sent directly, without gating, to the first register in the second pipeline stage.

8380964, Feb 19, 2013

Apr 3, 2009

12/417878

James Wilson Bishop - Newark Valley NY, US
Mary Douglass Brown - Austin TX, US
Jeffrey Carl Brownscheidle - Winooski VT, US
Robert Allen Cordes - Austin TX, US
Maureen Anne Delaney - Burlington VT, US
Jafar Nahidi - Round Rock TX, US
Dung Quoc Nguyen - Austin TX, US
Joel Abraham Silberman - Somers NY, US

International Business Machines Corporation - Armonk NY

G06F 15/00, G06F 9/30, G06F 9/40

712214, 712220, 712216

An information handling system includes a processor with an instruction issue queue (IQ) that may perform age tracking operations. The issue queue IQ maintains or stores instructions that may issue out-of-order in an internal data store IDS. The IDS organizes instructions in a queue position (QPOS) addressing arrangement. An age matrix of the IQ maintains a record of relative instruction aging for those instructions within the IDS. The age matrix updates latches or other memory cell data to reflect the changes in IDS instruction ages during a dispatch operation into the IQ. During dispatch of one or more instructions, the age matrix may update only those latches that require data change to reflect changing IDS instruction ages. The age matrix employs row and column data and clock controls to individually update those latches requiring update. The issue queue may selectively clock a row and a column of cells of the age matrix that correspond to a dispatched instruction's queue position while leaving other cells unclocked to conserve power.

2010005, Mar 4, 2010

Aug 28, 2008

12/199853

Christopher M. Abernathy - Austin TX, US
Mary D. Brown - Austin TX, US
Todd A. Venton - Austin TX, US

International Business Machines Corporation - Armonk NY

G06F 9/38

712217, 712E0905

A method for double-issue complex instructions receives a complex instruction comprising a first portion and a second portion. The method sets a single issue queue slot and allocates an execution unit for the complex instruction, and identifies dependencies in the first and second portions. The method sets a dependency matrix slot and a consumers table slot for the first and section portion. In the event the first portion dependencies have been satisfied, the method issues the first portion and then issues the second portion from the single issue queue slot. In the event the second portion dependencies have not been satisfied, the method cancels the second portion issue.