Logic circuit emulator and control method therefor
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United States of America Patent
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May 2, 2017
Grant Date -
Feb 28, 2013
app pub date -
Apr 26, 2011
filing date -
Apr 27, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A logic circuit emulator comprises multiple sub-systems, in which each sub-system outputs to another one of the sub-systems a permission notification to permit the another sub-system to proceed to next emulation clock cycle depending on whether or not the state of an own sub-circuit has advanced. In case a signal that is output from an own sub-circuit and that is to be sent to a sub-circuit of the other sub-system has changed, each sub-system outputs a transfer request to transfer the signal to the another sub-system before the next emulation clock cycle. In case a signal is not being sent from the own sub-circuit to the sub-circuit of the another sub-system, and a permission notification is received but no transfer request is being received from the other sub-system, a clock signal is output for the own sub-circuit to advance the own sub-circuit to the next emulation clock cycle.
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