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Design Languages >> Verilog-AMS >> parameter array declaration error
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Message started by Pavel on Apr 17^th, 2007, 5:04am

Title: parameter array declaration error
Post by Pavel on Apr 17^th, 2007, 5:04am

Hello

In my code I try to use the similar instruction as in example in chapter 3.2.3 "Parameter arrays" of Verilog-AMS
Language Reference Manual:

Code:

parameter real fpoles [0:4] = {5.727, 1.24E+07, 1.84E+07, 2.38E+07, -3.57E+07};

The parser gives the following error message:

In Affirma-AMS, parameter array declaration is not supported.

Where am I wrong?

Regards

Pavel

Title: Re: parameter array declaration error
Post by Geoffrey_Coram on Apr 17^th, 2007, 6:52am

Parameter arrays are not supported in Verilog 1364-2005 (they are in SystemVerilog 1800-2005), so your AMS simulator may not haveimplemented the feature.

Title: Re: parameter array declaration error
Post by Pavel on Apr 17^th, 2007, 6:55am

But why this feature figures in Verilog-AMS Language Reference Manual ?

Title: Re: parameter array declaration error
Post by Geoffrey_Coram on Apr 18^th, 2007, 8:55am

Parameter arrays are an extension supported in Verilog-AMS. I'm just saying, a number of AMS simulators are really Verilog-1364 simulators with some amount of the AMS extensions supported, and it looks like yours doesn't have everything you want.

The simulator message does seem to indicate that the vendor knows it's a valid construct, but unsupported.

Title: Re: parameter array declaration error
Post by Pavel on Apr 19^th, 2007, 1:58am

Ok, thanks Geoffrey,

Just for curiosity (if you know) what simulators support all verilog-AMS features/extensions.
I use ncsim (Cadence).

Regards.

Pavel.

Title: Re: parameter array declaration error
Post by Geoffrey_Coram on Apr 19^th, 2007, 5:24am

To my knowledge, no simulator supports the *full* LRM 2.2 ...