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Doe's this 'dist' constraint is legal?

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Hello,

 I tried to use the following constraint (dist) which I'm not sure is syntatically legal.
Anyway, the NC simulator compiled it without warnings but it didn't work as expected in simulation:

cmd_kind dist { {CFG_WR, PGM_WORD, PGM_PAGE, READ_PAGE, READ_WORD} := 10, SW_RESET := 1};

In simulation I got only SW_RESET cmd kind.

The alternative is to explictly define weight for each item of the {} group which is really not comfortable.

Does anyone know if by SV LRM this should have worked?

Thanks,

 

Parents

  • I think you wanted to use square brackets instead of curly ones, around the range:

    cmd_kind dist { [CFG_WR, PGM_WORD, PGM_PAGE, READ_PAGE, READ_WORD] := 10, SW_RESET := 1};

    And I'm assuming you had this inside a constraint block or "randomize() with" construct...

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  • I think you wanted to use square brackets instead of curly ones, around the range:

    cmd_kind dist { [CFG_WR, PGM_WORD, PGM_PAGE, READ_PAGE, READ_WORD] := 10, SW_RESET := 1};

    And I'm assuming you had this inside a constraint block or "randomize() with" construct...

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