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SYSTEM VERILOG Randomization queries
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NARESH SAMBHNANI
Jul 18, 2012, 2:21:51 AM7/18/12
to Naresh Sambhnani
I am facing a problem in randomizing an array. As per my need:-
I have an array of 16 elements having 9 bits each. My need is to set 15 elements to a known value and have to randomize an element. which element has to be randomized is to be choosen randomly. And only one element has to be randomized.
One solution i have seen that randomize the element inside the constraints and map the fixed values in post_randomized task.
Is there any other way to this stuff ??
I have an array of 16 elements having 9 bits each. My need is to set 15 elements to a known value and have to randomize an element. which element has to be randomized is to be choosen randomly. And only one element has to be randomized.
One solution i have seen that randomize the element inside the constraints and map the fixed values in post_randomized task.
Is there any other way to this stuff ??
Robert Miles
Jul 19, 2012, 10:14:42 AM7/19/12
to
element. Randomize this new array. Set the 15 elements of the
original array to their known values. Make a random choice of one
of the 15 elements, then copy the contents of the new array into
that element.
Marcus Harnisch
Jul 30, 2012, 1:11:27 PM7/30/12
to
NARESH SAMBHNANI <naresh....@gmail.com> writes:
> My need is to set 15 elements to a known value and have to randomize
> an element.
Are these known values always the same? Could you provide an example?
> My need is to set 15 elements to a known value and have to randomize
> an element.
From the little we know about the actual requirements, I would probably
not randomize the array itself but use separate rand variables for both
index and value and assign the results in post_randomize, as you
suggested.
Cheers
Marcus
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