From: Kev (kev@v-ms.com)
Date: Fri Jan 15 1999 - 14:47:30 PST
BAD MSG:
Hi again,
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Since I received no response to the question about whether
Verilog 'view' is equivalent to VHDL 'architecture' I'll
assume that it is.
Assuming so, you should really use 'arch' instead of 'view'
in your spec. to avoid confusion. "View" was used in the OVI
Verilog-AMS group for describing the genuinely multi-view
object in a mixed-signal simulation - i.e.signals on the
analog/digital boundary, which can have a voltage or current
value as well as a logic (1,0,X) value.
The original discussion documents are still on-line at:
http://www.dnai.com/~orpheus/lrm/
At the time I also proposed an extension of the multiple
(signal) view scheme for extending Verilog to support other
'views' e.g. user defined enums (like VHDL MVL7) and a
resolution scheme (in order to allow multi-language
simulation boundaries).
Obviously I'd like to reserve 'view' for that use, since
using 'view' where 'architecture' would do equally well will
lead to unnecessary confusion - and I can't think of another
word other than 'view' to use in the mixed signal boundary
case.
Regards,
Kev.
<p>Adam Krolnik wrote:
>
> A question about all the selection/expansion clauses.
>
> What is the difference between
>
> cell <cell> bind <lib_cell_name>
> cell <cell> liblist <lib>:<view>
>
> Does liblist apply a new library search list to the named cell
> and its children?
>
> I.e. A library search list of only 1 library should select that exact one.
>
> A second (large) question. I made this list and wrote what I thought
> it meant. Is this correct?
>
> Valid Combinations(16) :: Meaning(use)
>
> default liblist specify default order of libraries to search
> default viewlist specify default order of views to search
> default stoplist specify views to not expand if selected.
> lib viewlist respecify view order for library.
> cell liblist specify library list for this cell.
> cell viewlist specify view list for this cell
> cell stoplist specify stop list for cells that select these views.
> cell bind specify specific lib/cell/view for these cells.
> inst liblist specify library list order for these instances.
> inst viewlist specify view list order for these instances.
> inst stoplist specify stop views for these instances.
> inst bind specify specific lib/cell/view for these instances.
> path liblist specify library list for this instance and children.
> path viewlist specify view list for this instance and children.
> path stoplist specify stop list for this instance and children
> that select these views
> path bind specify specific lib/cell/view for this instance.
>
> Which of these would you say would be most often used?
>
> 1. default liblist
> 2. default viewlist
> 3. path viewlist
> 4. path liblist
> 5. cell viewlist
> 6. cell liblist
> 7. lib viewlist
-- http://www.v-ms.com mailto:admin@v-ms.com Mixed Signal Simulation
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