Jeffrey S Mayes, 45450 Shin Oak Ln, Liberty Hill, TX 78642

6574752, Jun 3, 2003

Jul 15, 1999

09/353973

George Henry Ahrens - Pflugerville TX
John C. Kennel - Austin TX
Jeffrey Scott Mayes - Austin TX
Maulin Ishwarbhai Patel - Round Rock TX
David Lee Randall - Leander TX

International Business Machines Corporation - Armonk NY

H02H 305

714 43, 714 6, 711148

A method, system and computer program are described for isolating bus errors detected during system start-up by utilizing a technique in which a shared mailbox associated with a service processor is provided for holding the address of an adapter in an I/O drawer. If an error is detected the server processor is notified. The server processor then retrieves the address from the mailbox, uses it to derive a location code which is then passed along with the error code to an appropriate error analysis routine. The start-up procedure is then shut down.

6219743, Apr 17, 2001

Sep 30, 1998

9/164128

John C. Kennel - Austin TX
Jeffrey Scott Mayes - Round Rock TX

International Business Machines Corporation - Armonk NY

G06F 1324

710260

An apparatus and method of dynamic resource mapping for isolating interrupt sources is implemented. Each interrupt source is provided with a unique identifier. The identifier is mapped to an interrupt number which is sent to an operating system when the interrupt source corresponding to the identifier generates an interrupt. Each device is associated with a data structure that includes a data value which is operable for accessing an interrupt register. The data value may be a pointer that points to a pointer to the interrupt register for the device generating the interrupt. When an interrupt is generated, the mapping may be used to access the pointers which thereby provide direct access to the interrupt register, whereby the contents of the interrupt register are processed by an interrupt service routine.