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Simulators >> Circuit Simulators >> can't plot terminal currents (dc analysis) - no waveform supplied
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Message started by oermens on Feb 25^th, 2009, 9:47am

Title: can't plot terminal currents (dc analysis) - no waveform supplied
Post by oermens on Feb 25^th, 2009, 9:47am

as the title says, when i try to plot terminal currents from the results of dc analysis, cadence says

ERROR: /M0/D is not a kept output.

in spectre save options, the 'save', 'pwr', 'currents' are set to 'all' and 'userprobes' is set to 'yes'. the result is there in result browser, but i can not get it from ADE->results->direct plot->main form or dc. however i can plot the transient results from direct plot menu. i'm working in tsmc 180nm kit, but in ibm 130nm kit i don't have this problem. any ideas? this only happens for instances from the tsmc pdk library.

simulator version:

$ spectre -V
@(#)$CDS: spectre version 6.1.1 06/17/2007 07:20 (usim440-24) $
$ spectre -W
sub-version 6.1.1.424
$ icfb -V
@(#)$CDS: icfb.exe version 5.1.0 06/20/2007 02:40 (cicsun11) $
$ icfb -W
sub-version 5.10.41_USR5.90.69

Title: Re: can't plot terminal currents (dc analysis) - no waveform supplied
Post by Geoffrey_Coram on Feb 26^th, 2009, 6:28am

Could be that M0 is a subcircuit, and you need to try to plot M0/M/D (assuming M0 contains a MOS named "M" along with perhaps a diode).