Subject: Re: [vhdl-200x] Re: TBV2: Associative arrays proposal submitted
From: Allan Herriman (allan_herriman@agilent.com)
Date: Mon Apr 28 2003 - 11:23:53 PDT
Farrell Ostler wrote:
>
> Jim Goeke wrote:
>
>
>>It may be how people have historically written models but should we continue to
>>bank on that? In the past there were many tool constraints that prevented using
>>anything but vectors, that is no longer the case. We have written complete
>>(synthesizable) designs using integer based types for for everything except the
>>usual cast of control bits where it doesn't make much sense. With properly
>>ranged integer subtypes the tools now do the "right" thing.
>
>
> Have you been bothered much by the fact that integers are not guaranteed
> to have a range larger than -2^31-1 to 2^31-1?
In practice a simulator or synthesiser on a 32 bit platform will give
you a range of -2^31 to 2^31-1. I don't know of any exceptions.
This doesn't help if you have a > 32 bit address bus though.
Regards,
Allan.
-- Allan Herriman Advanced Networks Division +61 3 9210 5527 Tel Agilent Technologies, Inc. +61 3 9210 5550 Fax 347 Burwood Highway Forest Hill 3131 Australia
This archive was generated by hypermail 2b28 : Mon Apr 28 2003 - 11:32:57 PDT