| 摘要 |
A test emulator for emulating a test of a semiconductor device is provided. The test emulator includes a test pattern providing means for providing a test pattern to a device simulator which simulates the operation of a semiconductor device, an expected value storage means for associating a comparison timing at which an output signal outputted from the device simulator according to the test pattern is compared with an predetermined expected value with the expected value at the comparison timing and previously storing therein the same, a margin determination means for determining the size of a margin between which the output signal corresponds to the expected value when the output signal corresponds to the expected value at the comparison timing and a notification means for notifying a user that the margin at the comparison timing is small when the size of margin is smaller than a reference value.
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