Invention Grant
- Patent Title: Method for priority-encoding interrupts and vectoring to interrupt code
- Patent Title (中): 优先编码中断和向量中断代码的方法
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Application No.: US10365364Application Date: 2003-02-12
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Publication No.: US07739438B2Publication Date: 2010-06-15
- Inventor: Daniel V. Zilavy
- Applicant: Daniel V. Zilavy
- Applicant Address: US TX Houston
- Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee Address: US TX Houston
- Main IPC: G06F13/24
- IPC: G06F13/24 ; G06F13/26 ; G06F13/32

Abstract:
A method for interrupt priority encoding and vectoring begins with reading pending interrupt bits from an interrupt status register. An entry in a table is located using the pending interrupt bits. The table has a plurality of vector entries for at least one high priority interrupt bit, and a single entry for at least one low priority interrupt bit. A vector address is fetched from the table and a branch is performed to the vector address. An alternate embodiment has high and low priority interrupt vector tables, where the high low priority interrupt vector table is used if no high priority interrupt is present.
Public/Granted literature
- US20040158664A1 Method for priority-encoding interrupts and vectoring to interrupt code Public/Granted day:2004-08-12
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