Four SKILL questions ???

Hi all,

I have four questions (i guess FAQs)

Q1. I have a schematic sheet that contains only one instance. How can
I get list of all properties that user can modify for this instance
and print them formatted in an output file? Something like the
following:

libName, cellName, instName, param1Name=Val, param2Name=val, ....

For example, if the sheet contains "nmos" from library "umc45" and
instance name is: "mn1", I need to print:
umc45, nmos, mn0, w=0.6u, l=0.5u, m=1

I tried to play with dbOpenCellViewByType("test" "a1" "schematic")
~>instances~>"M0"~>prop

but it seems to be wrong :-(

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Q2. I have a library, contains many cells, I need to print out names
of cells that only have both symbol and layout views, I wrote the
following proc, but it is not working as I want! Could anybody see
where the error is?

procedure( GetListOfLibCellsWithSymAndLayoutViews(lib)
let(()

foreach(cell ddGetObj(lib)~>cells
; Get names of all cells in the lib
cellName=dbOpenCellViewByType(lib cell~>name "symbol")~>cellName
; if the current cell has symbol and layout views then print it
if( member(cell~>views~>name '("symbol")) && member
(cell~>views~>name '("layout") )
printf("%s\n" cell~>name)
); if

;

); foreach
); let
); procedure

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Q3. What is the simplest way to set/modify parameter value for this
single instance in the sheet? Given parameter name and new value?

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Q4. How to create netlist for this sheet with SKILL? I couldn't use
createNetlist()

Thanks a lot for your help,
Regards,

 

Hi Reotaro,

Q1:
To get a cell view info, and instances parameter value. You need do
this.
cvId = dbOpenCellViewByType("libName" "cellName" "viewName" )
cvId~>libName
cvId~>cellName
cvId~>viewName
cvId~>instanceMasters~>cellName

To get the instances parameters,
inst = geGetSelSet()
cdfParam = cdfGetCellCDF(inst)



Q2:
You should do a ddGetObj to check for the view before opening. If the
cell view doesn't exist but your code insist to open it, it will
prompts u error. You can do this:

procedure( GetListOfLibCellsWithSymAndLayoutViews(lib)
let((libID (symView "schematic") (layView "layout"))

libID = car(setof(x ddGetLibList() x~>name == lib ))

foreach(cell libID~>cells
when( ddGetObj(lib cell~>name symView) && ddGetObj(lib
cell~>name layView)
printf("%L %L\n" lib cell~>name)
);when
);foreach
);let
);proc


Q3:
I doesn't get what really you want?


Q4:
Yes, u can use createNetList() function to get the netlist.

Regards,
How

 

Hi How,

Thanks a lot for your quick answer.

Concerning Q1:
For some reasons cdfGetCellCDF() returned nil ! I am running on
IC514, do u have any idea why?
Moreover, I am looking for something fully automated, I don't need to
manually select inst inside the sheet then get its params list,
instead I'd like to script to look for it and list its available
parameters.

Concerning Q2:
Perfect, this is exactly what i was looking for

Concerning Q3:
What I mean is: how to set certain parameter of an instance to
certain value (e.g. set 'w' of 'mimrf' to 3u) using SKILL

Concerning Q4:
I couldn't use createNetlist() but I managed to use si and pipo to
do so. Thanks for the hint anyway.

Best regards,
Ahmad

 

Ahmad wrote, on 06/05/09 13:32:

That's because it should be cdfGetInstCDF() not cdfGetCellCDF()...

inst=dbFindAnyInstByName(cvId "mimrf")
when(inst
inst~>w="3u"
)

You didn't say what kind of netlist. If it's a CDL netlist or Verilog netlist,
then si would have been the way to do it. If it's a spectre netlist (or similar
ADE netlist), then createNetlist() would be the way.

And pipo is nothing to do with netlisting - that would be to create the stream
(GDS) file.

Regards,

Andrew.