Generate netlist with subckt statement for top level

Tavi,

envOption(
        'setTopLevelAsSubckt  t
)

Is now available from IC616 ISR3 onwards.

Regards,

Andrew.

Thanks for the prompt reply.

Is there a similar solution for IC514?

Thanks,

--Tavi

Hi Tavi,

How about the code below. Note that if you want to switch it back in the same session, you'd have to do:

asiSetNetlistFormatterClass(asiGetTool('spectre) 'spectreFormatter)

Look at the comments at the top to see the function to initialize the alternative formatter which includes the header for the subckt. The IC616 solution that I mentioned below also incorporates the changes needed (with a recent enough MMSIM version) so that the netlist can still be simulated, using a new switch for spectre to tell it the top subckt to simulate, which the solution below doesn't implement. But if you only want it to produce a netlist, this solution should be sufficient.

Regards,

Andrew.

/* abSpectreTopSubckt.ils

Author     A.D.Beckett
Group      Custom IC (UK), Cadence Design Systems Ltd.
Language   SKILL
Date       May 16, 2006 
Modified   
By         

Defines a new formatter, which adds subckt definition around
top level circuit.

Does this by extending the spectreFormatter. Note we could directly
define methods for the spectreFormatter, since it doesn't define
them itself, but then there is the risk that a future release
might define methods for spectreFormatter - so better to extend
rather than make that assumption.

To install, call (abRegisterSpectreTopCVFormatter)

***************************************************

SCCS Info: @(#) abSpectreTopSubckt.ils 05/16/06.18:06:00 1.1

*/

;------------------------------------------------------------------------
; Need to have these contexts loaded - in the right order - so
; that the spectreFormatter class can be extended
;------------------------------------------------------------------------
(foreach context '("oasis" "asimenv" "analog" "spectrei" "spectreinl")
  (unless (isContextLoaded context)
          (loadContext 
           (prependInstallPath (strcat "etc/context/" context ".cxt")))
          (callInitProc context)
          )
  )

;------------------------------------------------------------------------
; Define the class for the formatter. 
;------------------------------------------------------------------------
(defclass abSpectreTopCVFormatter (spectreFormatter)
  ()
  )

/***************************************************************
*                                                              *
*              (abRegisterSpectreTopCVFormatter)               *
*                                                              *
*              Register the formatter with Artist              *
*                                                              *
***************************************************************/

(defun abRegisterSpectreTopCVFormatter ()
  (let (tool)
       (setq tool (asiGetTool 'spectre))
       (asiSetNetlistFormatterClass tool 'abSpectreTopCVFormatter)
       )
  )


/***********************************************************************
*                                                                      *
* (nlPrintTopCellHeader ((formatter abSpectreTopCVFormatter) cellView) *
*                                                                      *
*    Method for top level header - call the standard subckt header     *
*                                                                      *
***********************************************************************/

(defmethod nlPrintTopCellHeader ((formatter abSpectreTopCVFormatter) cellView)
  (nlPrintSubcktHeader formatter cellView)
  ;----------------------------------------------------------------------
  ; don't want comments twice, so don't call the standard formatter?
  ;----------------------------------------------------------------------
  ; (when (nextMethodp) (callNextMethod))
  )

/***********************************************************************
*                                                                      *
* (nlPrintTopCellFooter ((formatter abSpectreTopCVFormatter) cellView) *
*                                                                      *
*    Method for top level footer - call the standard subckt footer     *
*                                                                      *
***********************************************************************/

(defmethod nlPrintTopCellFooter ((formatter abSpectreTopCVFormatter) cellView)
  (nlPrintSubcktFooter formatter cellView)
  (when (nextMethodp) (callNextMethod))
  )

 It works!

 Thank you.

Hi, Andrew. I placed your code, followed by Tavi's code, inside a procedure, but I got some problems.

If I call the procedure from within CIW, I don't get any errors and the netlist is generated as it should be.

But if I placed it as a sub menu item,

 procedure( AddItemSubHier( _args )

let( ( fileMenu slider MenuItemSubCktNetlist )

fileMenu = car( setof( menu hiGetBannerMenus( hiGetCurrentWindow() ) rexMatchp("^schFileMenu" menu ) ) )

if( fileMenu 

slider = eval( car( setof( item eval( fileMenu )->? rexMatchp( "^schHierSlider" item ) ) ) ) 

)

MenuItemSubCktNetlist = hiCreateMenuItem( ?name 'menu1 ?itemText "Netlist - Subcircuito" ?callback "Netlist_TopLevel_SubCkt()" )

when( !slider->menu1 hiInsertMenuItem( slider MenuItemSubCktNetlist length( slider->? ) ) )

) ;let

) ;procedure

deRegUserTriggers( "schematic" nil nil 'AddItemSubHier )

*Error* _iliGetSlotSpecs: not a class object or class name - spectreFormatter

What have I done wrong?

Thanks in advance.

Best regards,

I think you'll have to show what Netlist_TopLevel_SubCkt looks like. I'm not sure what you mean by placing my code followed by Tavi's in a procedure. My code relies on pre-loading some context files before defining some classes - so I'm guessing something got screwed up somewhere as it doesn't know what spectreFormatter is. So please share the code so that I can check it - you've only shown the menu definition, which is not the interesting part...

Regards,

Andrew.

Hi, Andrew.

No problem. Here it is:

procedure( AddItemSubHier( _args )

let( ( fileMenu slider MenuItemNetlist )

fileMenu = car( setof( menu hiGetBannerMenus( hiGetCurrentWindow() ) rexMatchp("^schFileMenu" menu ) ) )

if( fileMenu 

slider = eval( car( setof( item eval( fileMenu )->? rexMatchp( "^schHierSlider" item ) ) ) ) 

)

MenuItemNetlist = hiCreateMenuItem( ?name 'menu1 ?itemText "Netlist - Subckt" ?callback "Netlist_TopLevel_SubCkt()" )

when( !slider->menu1 hiInsertMenuItem( slider MenuItemNetlist length( slider->? ) ) )

) ;let

) ;procedure

procedure( Netlist_TopLevel_SubCkt()

let( ( sch design )

(foreach context '("oasis" "asimenv" "analog" "spectrei" "spectreinl")

(unless (isContextLoaded context)

(loadContext 

(prependInstallPath (strcat "etc/context/" context ".cxt")))

(callInitProc context)

)

)

(defclass abSpectreTopCVFormatter (spectreFormatter)

()

)

(defun abRegisterSpectreTopCVFormatter ()

(let (tool)

(setq tool (asiGetTool 'spectre))

(asiSetNetlistFormatterClass tool 'abSpectreTopCVFormatter)

)

)

(defmethod nlPrintTopCellHeader ((formatter abSpectreTopCVFormatter) cellView)

(nlPrintSubcktHeader formatter cellView)

)

(defmethod nlPrintTopCellFooter ((formatter abSpectreTopCVFormatter) cellView)

(nlPrintSubcktFooter formatter cellView)

(when (nextMethodp) (callNextMethod))

)

(abRegisterSpectreTopCVFormatter)

simulator( 'spectre )

sch = geGetEditCellView()

design( sch~>libName sch~>cellName sch~>viewName )

createNetlist()

) ; let

) ; procedure

Best regards,

Don't nest all the code inside Netlist_TopLevel_SubCkt(). The procedures won't be local (unless you're using SKILL++ and have a .ils suffix), and even then some of it will be evaluated at the wrong time. There's no need to do it that way. Load the code I gave you, and define your function like this:

procedure( Netlist_TopLevel_SubCkt()
let( ( sch )
    abRegisterSpectreTopCVFormatter()
    sch=geGetEditCellView()
    design( sch~>libName sch~>cellName sch~>viewName )
    createNetlist()
    asiSetNetlistFormatterClass(asiGetTool('spectre) 'spectreFormatter)
))

(Note, I didn't test the above code).

Regards,

Andrew.

Hi, Andrew.

Thanks very much. It worked just fine (I just had to add the line for the simulator!).

Best regards, 

Hi Andrew,

The setTopLevelAsSubckt option doesn't appear to work in ICADV121_110.  Is that feature only available in IC616?

I was able to get running using your abSpectreTopSubckt.ils, so thank you for that.