Apparatus and method for computer system interrupt emulation
Patent 6185523 Issued on February 6, 2001. Estimated Expiration Date: 
October 5, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 5, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMicroprocessor with an external command mode for diagnosis and debugging Method for testing an integrated circuit with user definable trace function Virtual monitor debugging method and apparatus Test access port controller and a method of effecting communication using the same Parallel and serial debug port on a processor Patent #: 6041406 InventorsApplicationNo. 166437 filed on 10/05/1998US Classes:703/28, In-circuit emulator (i.e., ICE)703/26Of instructionExaminersPrimary: Teska, Kevin J.Assistant: Frejd, Russell W. Attorney, Agent or FirmInternational ClassG06F 009/455AbstractAccordingly, provided is an apparatus and method for generating a computer system interrupt emulation having the effect of a hardwired interrupt. A service processor with a test circuit interface can be coupled to an integrated circuit, which has a test circuit with an access to a register of the integrated circuit. A program, executable by the processor, responds to an interrupt request by instructing the processor to save a system state of the integrated circuit and to set a system state of the integrated circuit. The method for emulating an interrupt of an integrated circuit provides for receiving an interrupt request. A register of an integrated circuit is then accessed through a test circuit of the integrated circuit. The contents of the register are saved to a storage location, and the register is then set to a state responsive to the interrupt request. The interrupt request may be made locally or remotely.Other References
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