ASIC Verification: Writing test cases using sequences

Monday, September 29, 2008

Writing test cases using sequences

The simplest way to write a test case is to redefine the behavior of the MAIN sequence by overriding the body() TCM. This is sufficient to create the test case, because the MAIN sequence is started automatically.

extend MAIN usb_sequence_s {
body()@driver.clock is only {

do usb_transaction_s keeping {
.pid == SETUP};
}; // End of do
}; // End of body()
}; // End of MAIN

To create a simple test based on the sequence library is to choose a subset that will be activated in the specific test and then set the weights for each kind using keep soft select.


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Tauf said...

Good blogging!

Plz try to expand your topics if you can, I see so far you covered Agent, BFM, Struct Item, Driver, Sequences, finally Tests.....
Missing most important section Monitor??????
1)From here on can you expand more on Monitors.
2)virtual sequences to drive multiple BFMS,
2) RAM Model/REG Model
3)AHB/APB buses decoders
these all are part to create Verification component/verification IP for communication protocols/Memories/audio or imaging application Verification models etc.

Cheerz

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