Xilinx, Inc.

Raj Kumar Nagarajan

Navaneethan Sundaramoorthy

Jorge Ernesto Carrillo

Satish R Ganesan

Chukwuweta Chukwudebe

Sivakumar Velusamy

James Pangburn

Vasanth Asokan

In one embodiment of the present invention, a method is provided for maintaining and storing revision history of a design. The method includes, in response to a first control input by a user, determining, by a processor, module definition parameters that have changed from a design file. The changed module definition parameters are stored in the design file. For each changed module definition parameter, revision data are appended to revision history data. The revision data indicates a revision identifier, a module definition parameter identifier, and an updated value of the changed module definition parameter.

Revision history storage and maintenance

Various approaches for profiling a target system are described. In one approach, a uni-directional, point-to-point bus has a single input port and a single output port. A target processor has a trace port coupled to the input port of the bus and is configured to execute a plurality of instructions one or more times. The target processor provides state data at the trace port and to the input port of the bus. A profile circuit arrangement is coupled to the output port of the first bus, and a memory is coupled to the profile circuit arrangement. The profile circuit arrangement is configured to read data from the output port of the first bus and write the data to the memory.

Circuit arrangement for profiling a programmable processor connected via a uni-directional bus

A method of implementing a comparator in a device having programmable logic is described. The method comprises implementing a first comparison function in a first lookup table; implementing a second comparison function in a second lookup table; and using an output associated with the first comparison function to select an output of the comparator. A device having programmable logic comprising a comparator is also described.

Comparator and method of implementing a comparator in a device having programmable logic

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San Jose, CA, United States of America

Raj Kumar Nagarajan