The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2007
Filed:
May. 30, 2003
Sergiy B. Yakovlev, Duluth, GA (US);
Jason Rohr, Sugar Hill, GA (US);
Sergiy B. Yakovlev, Duluth, GA (US);
Jason Rohr, Sugar Hill, GA (US);
American Megatrends, Inc., Norcross, GA (US);
Abstract
Each attention button is tied to a presence signal, which is also used to detect the presence of a PCI adapter card within a slot. By comparing HPPC register states, pending due to a system control interrupt ('SCI'), with stored HPPC register states prior to the SCI, the HPPC is able to distinguish between an attention button press and a PCI card insertion or removal and therefore may respond appropriately to the SCI. According to the method, SCIs generated in a computer system by attention buttons are diagnosed and serviced by storing the contents of the HPPC registers. The contents of the registers identify the state of the presence and manually-operated retention latch ('MRL') signals prior to the occurrence of a SCI and upon receiving a SCI corresponding to a state change for either signal, identify the hot plug controller and the slot where the interrupt occurred.