Louis R Rodriguez

US Patent:

6658599, Dec 2, 2003

Filed:

Jun 22, 2000

Appl. No.:

09/599182

Inventors:

Stephen Dale Linam - Austin TX
Michael Anthony Perez - Cedar Park TX
Louis Gabriel Rodriguez - Austin TX
Mark Walz Wenning - Cedar Park TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1100

US Classification:

714 25, 714 44

Abstract:

A method, system, and apparatus for managing a failed input/output adapter within a data processing system is provided. In one embodiment, an operating system handler receives an indication that one of a plurality of input/output adapters has failed. The operating system handler consults an error log to determine which input/output adapter has failed. Once the bad input/output adapter has been determined, the operating system handler disables the bad input/output adapter and deallocates any processes bound for the bad input/output adapter without powering down the data processing system. A user is then notified of the bad input/output adapter so that the bad input/output adapter can be replaced. The input/output adapter may be replaced without powering down the data processing system. Once the bad input/output adapter has been replace, the new input/output adapter is enabled.

US Patent:

6697940, Feb 24, 2004

Filed:

Aug 24, 2000

Appl. No.:

09/645174

Inventors:

Michael Anthony Perez - Cedar Park TX
Louis Gabriel Rodriguez - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15177

US Classification:

713 1, 710104

Abstract:

A method, system, and apparatus for customizing procedures to be performed during an initialization process in a data processing system is provided. In one embodiment, a class of procedures to omit during the initialization process is determined. This class of procedures may be for example, the omission of identifying and creating nodes for a certain class of drives, such as, for example, all ssa drives. Once procedures to omit from the initialization process are determined, then all other initialization procedures are performed except, of course, for the procedures belonging to the class of procedures determined to be omitted.

US Patent:

6704823, Mar 9, 2004

Filed:

Jul 20, 2000

Appl. No.:

09/620723

Inventors:

Michael Anthony Perez - Cedar Park TX
Louis Gabriel Rodriguez - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1324

US Classification:

710260, 710266

Abstract:

A method and an apparatus is present for dynamically allocating a set of output interrupt lines at a host adapter to a set of input interrupt lines for card slots controlled by the host adapter. If the number of input interrupt lines is greater than the number of output lines, then interrupt sharing is necessary. The number of input interrupt lines can be determined automatically by scanning all the card slots or can be determined by values stored in lookup tables. The algorithm to determine a logical mapping of the input interrupt lines to the output lines, in cases where interrupt sharing is required, can be based on a number of factors. A simple approach is to distribute the interrupts as equally as possible. Another algorithm may take into account the expected frequency of interrupts based on the device involved. Yet another approach may use a set of predetermined priorities.

US Patent:

7219258, May 15, 2007

Filed:

Dec 11, 2003

Appl. No.:

10/733949

Inventors:

Peter Joseph LeVangia - Kingston NY, US
Louis Gabriel Rodriguez - Austin TX, US
Steven Vongvibool - Austin TX, US
Peter Adam Wendling - Poughkeepsie NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 11/00

US Classification:

714 14, 714 44

Abstract:

A method, system, and computer program product are disclosed for diagnosing and recovering from I/O subsystem errors. A data processing system includes a computer which includes a power subsystem and at least one I/O subsystem. A determination is made that an error occurred in the I/O subsystem. Registers in integrated circuits included within the I/O subsystem are accessed utilizing the power subsystem in order to diagnose the error while the I/O subsystem is in an error state.

US Patent:

54831768, Jan 9, 1996

Filed:

Feb 9, 1993

Appl. No.:

8/015506

Inventors:

Louis Rodriguez - Austin TX
Clark R. Williams - Plano TX
Bradley M. Harrington - Carrollton TX

Assignee:

Dallas Semiconductor Corporation - Dallas TX

International Classification:

H03K 19094

US Classification:

326 21

Abstract:

A timekeeping integrated circuit with devices partitioned into areas with different power supplies and level translators between the areas; the level translators use a memory cell for isolation and to shorten the signal active time for low power consumption. Also a one-wire communication port with low power input buffers may be used to detect very slowly varying voltages. The input buffers include staged decreasing resistors as a power dissipation limitation.

US Patent:

58059229, Sep 8, 1998

Filed:

May 2, 1994

Appl. No.:

8/237437

Inventors:

Yah Bin Sim - Austin TX
Carl D. Wiseman - Austin TX
Tushar Patel - Austin TX
Rudolf Bettelheim - Buda TX
Louis Rodriguez - Fort Worth TX
Rollie M. Fisher - Trenton MI
John R. Scollard - Lake Orion MI
Clare C. Leiby - Southfield MI

Assignee:

Motorola, Inc. - Schaumburg IL
Ford Motor Company - Dearborn MI

International Classification:

G06F 1300

US Classification:

395825

Abstract:

Serial communication circuitry (10) having multiple queues (11-14) for use in a data processing system (95). Each queue (11-14) has multiple entries (52). Serial transfers from the multiple queues (11-14) are carried out under the control of global parameters (e. g. 205, 209), per-queue parameters (e. g. 211-212, 214-217), and per-entry parameters (e. g. 350-361). Each queue can be programmed to have a different set of per-queue parameters, and each entry within a queue can be programmed to have a different set of per-entry parameters. In addition, serial communication circuitry (10) can perform serial data transfers in response to the assertion of a trigger signal (30) from a source such as a timer (63) or a central processing unit (61). As a result, data transfers can be more precisely related to a particular timing signal or set of timing signals.