RE: [vhdl-200x-ft] real_vector type from vhdl-ams

Peter,

You may thank Ernst for mentioning this to me recently :)

It makes me think of a basic question. How do you keep reserved words from
1076.1 that are not defined in 1076 from being inadvertently defined
with a different semantic as 1076 evolves? It occurs to me that
1076 should note such reserved words somehow, if not indeed reserve
them in 1076 because they are reserved in 1076.1. I understand the basic
problem that reserving it prevents a user from declaring an object
with that identifier.

Regards, John

> -----Original Message-----
> From: Peter Ashenden [mailto:peter@ashenden.com.au]
> Sent: Tuesday, August 24, 2004 3:51 PM
> To: jshields@ieee.org; 'David Bishop'; vhdl-200x-ft@eda.org
> Subject: RE: [vhdl-200x-ft] real_vector type from vhdl-ams
>
> John,
>
> Your comment about reserved words made me check the vhdl-2002 LRM.
> Indeed,
> the word reference is listed there, but should not be. Did I overlook any
> others? (I'm notorious for just doing "boy looks"!) We have an ISAC
> issue
> open for fixing AMS-isms that have snuck into the LRM - I'll add this one.
> Thanks.
>
> Cheers,
>
> PA
>
> --
> Dr. Peter J. Ashenden peter@ashenden.com.au
> Ashenden Designs Pty. Ltd. www.ashenden.com.au
> PO Box 640 Ph: +61 8 8339 7532
> Stirling, SA 5152 Fax: +61 8 8339 2616
> Australia Mobile: +61 414 70 9106
>
>
> > -----Original Message-----
> > From: owner-vhdl-200x-ft@eda.org
> > [mailto:owner-vhdl-200x-ft@eda.org] On Behalf Of John J. Shields
> > Sent: Wednesday, 25 August 2004 06:53
> > To: 'David Bishop'; vhdl-200x-ft@eda.org
> > Subject: RE: [vhdl-200x-ft] real_vector type from vhdl-ams
> >
> >
> > Hi,
> >
> > REAL_VECTOR was introduced in 1076.1. It has been declared in
> > std.standard because the type is needed for the definition of
> > the 'LTF and 'ZTF attributes defined by 1076.1. The type is
> > also not declared in 1076-2002, although for some reason some
> > (but not all) of the 1076.1 reserved words are also reserved
> > (but unused) in 1076-2002.
> >
> > I don't know about integer_vector...where did you find it?
> >
> > Regards, John Shields
> >
> > > -----Original Message-----
> > > From: owner-vhdl-200x-ft@eda.org
> > [mailto:owner-vhdl-200x-ft@eda.org]
> > > On Behalf Of David
> > Bishop
> > > Sent: Tuesday, August 24, 2004 9:22 AM
> > > To: vhdl-200x-ft@eda.org
> > > Subject: [vhdl-200x-ft] real_vector type from vhdl-ams
> > >
> > > After last night's telecon I went hunting through the VHDL-AMS
> > > documentation looking for "real_vector" and "integer_vector" to see
> > > how they are defined.
> > >
> > > I found several places in the vhdl-ams packages where they are
> > > defined. However, I could find no definitions of these types
> > > anywhere.
> > >
> > > Since we may be using these types in the "minimum" and "maximum"
> > > function, we should take a look at how and where they are defined.
> >
> >
Received on Tue Aug 24 16:43:22 2004