save currents in a spectre netlist, run the netlist in batch mode and the currents is saved as instance_name:number

Hi Paul,

This requires changes to the spectre formatter. The ADE netlisting system has only relatively recently been altered to allow terminal currents to be specified by name - and the spectre formatter does not yet provide a built-in way of doing this - partly this is because of the issue of legacy - you need to be consisent about it everywhere otherwise you might be able to save the signals, but when you plot them it still looks for the name with a position rather than name. Similarly there  may be PDK compatibilty issues too.

Anyway, here's some code I used to test the enhancement (tidied up a little) - I will point out that I have not thoroughly tested this, so it comes at your own risk. One issue I should point out is that this requires both useterm=names to be set and the change in the formatter. If you do only one of the two, you probably won't be able to plot any currents from ADE (e.g. Outputs->To be  plotted). Loading an ADE state will wipe out the default additionalOptions value set in the code - it's only set for new ADE sessions.

/* abSpectreTermByName.ils

Author     A.D.Beckett
Group      Custom IC (UK), Cadence Design Systems Ltd.
Language   SKILL
Date       Jan 04, 2011 
Modified   
By         

Registers a new formatter to allow currents to be output
by name from ADE, for subckt pins:

abRegisterSpectreTermByNameFormatter()

May need to watch out if useterms=name is used and you are
using subckt models - in this case the CDF termMapping for the
devices would need to be adjusted.

The code sets useterms=name in the additional options for
Simulation->Options->Analog - however, if  you load an existing
state, this will be overwritten.

Uses enhancement implemented under CCR 435837 - which appeared
in IC5141 5.10.41.500.6.137 and IC613 6.1.3.500.13

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

SCCS Info: @(#) abSpectreTermByName.ils 01/04/11.13:46:23 1.1

*/

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

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

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

(defun abRegisterSpectreTermByNameFormatter ()
  (let (tool)
       (setq tool (asiGetTool 'spectre))
       (asiSetNetlistFormatterClass tool 'abSpectreTermByNameFormatter)
       ;-----------------------------------------------------------------
       ; tell spectre to use terminals by name - note this is only
       ; for new ADE sessions - may have to fill this in by hand if loading
       ; existing states
       ;-----------------------------------------------------------------
       (envSetVal "spectre.opts" "additionalArgs" 'string "useterms=name")
       )
  )

/****************************************************************
*                                                               *
* Overload the nlInitialize method for the revised formatter to *
*   turn off the differentFrom parameters for the netlister -   *
*   having initialized the standard spectre formatter first.    *
*                                                               *
****************************************************************/

(defmethod nlInitialize ((formatter abSpectreTermByNameFormatter))
  (callNextMethod)
  (let ((obj (nlGetNetlister formatter)))
       (nlSetOption obj 'preserveSubcktTermNamesInOrder t)
       )
  formatter
  )

Best Regards,

Andrew.

Hi Paul,

This requires changes to the spectre formatter. The ADE netlisting system has only relatively recently been altered to allow terminal currents to be specified by name - and the spectre formatter does not yet provide a built-in way of doing this - partly this is because of the issue of legacy - you need to be consisent about it everywhere otherwise you might be able to save the signals, but when you plot them it still looks for the name with a position rather than name. Similarly there  may be PDK compatibilty issues too.

Anyway, here's some code I used to test the enhancement (tidied up a little) - I will point out that I have not thoroughly tested this, so it comes at your own risk. One issue I should point out is that this requires both useterm=names to be set and the change in the formatter. If you do only one of the two, you probably won't be able to plot any currents from ADE (e.g. Outputs->To be  plotted). Loading an ADE state will wipe out the default additionalOptions value set in the code - it's only set for new ADE sessions.

/* abSpectreTermByName.ils

Author     A.D.Beckett
Group      Custom IC (UK), Cadence Design Systems Ltd.
Language   SKILL
Date       Jan 04, 2011 
Modified   
By         

Registers a new formatter to allow currents to be output
by name from ADE, for subckt pins:

abRegisterSpectreTermByNameFormatter()

May need to watch out if useterms=name is used and you are
using subckt models - in this case the CDF termMapping for the
devices would need to be adjusted.

The code sets useterms=name in the additional options for
Simulation->Options->Analog - however, if  you load an existing
state, this will be overwritten.

Uses enhancement implemented under CCR 435837 - which appeared
in IC5141 5.10.41.500.6.137 and IC613 6.1.3.500.13

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

SCCS Info: @(#) abSpectreTermByName.ils 01/04/11.13:46:23 1.1

*/

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

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

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

(defun abRegisterSpectreTermByNameFormatter ()
  (let (tool)
       (setq tool (asiGetTool 'spectre))
       (asiSetNetlistFormatterClass tool 'abSpectreTermByNameFormatter)
       ;-----------------------------------------------------------------
       ; tell spectre to use terminals by name - note this is only
       ; for new ADE sessions - may have to fill this in by hand if loading
       ; existing states
       ;-----------------------------------------------------------------
       (envSetVal "spectre.opts" "additionalArgs" 'string "useterms=name")
       )
  )

/****************************************************************
*                                                               *
* Overload the nlInitialize method for the revised formatter to *
*   turn off the differentFrom parameters for the netlister -   *
*   having initialized the standard spectre formatter first.    *
*                                                               *
****************************************************************/

(defmethod nlInitialize ((formatter abSpectreTermByNameFormatter))
  (callNextMethod)
  (let ((obj (nlGetNetlister formatter)))
       (nlSetOption obj 'preserveSubcktTermNamesInOrder t)
       )
  formatter
  )

Best Regards,

Andrew.