Electrical computers and digital data processing systems: input/ – Interrupt processing – Programmable interrupt processing
Reexamination Certificate
2005-05-24
2005-05-24
Ray, Gopal C. (Department: 2111)
Electrical computers and digital data processing systems: input/
Interrupt processing
Programmable interrupt processing
C713S300000, C713S320000, C710S260000
Reexamination Certificate
active
06898651
ABSTRACT:
According to one embodiment of the invention, a first signal line is provided for a serial interface unit (SIU) of an I/O controller to report interrupt requests to an interrupt controller. In one embodiment, a transition of the first signal line from a first level (e.g., low level or logic 0) to a second level (e.g., high level or logic 1) indicates a pending interrupt to the interrupt controller. A pull up resistor is provided to pull the first signal line to the second level when the first signal line is not driven by the SIU. In response to detecting an interrupt request initiated by an I/O device, a transition from the first level to the second level is generated on the first signal line for a predetermined duration to report the pending interrupt request to the interrupt controller.
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“Real-time software for the wire per wire X-ray data acquisition system” by Briquet-Laugier, F.; Baumlin, P.; Boulin, C.; Golding F.; Koch, M.; Epstein, A. (abstract only) Publication Date: Jun. 14-18, 1999.*
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Joshi Aniruddha P.
Wang Jennifer C.
Blakely , Sokoloff, Taylor & Zafman LLP
Ray Gopal C.
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