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MC_ring.sp: start with batch mode or interactive mode 

with variable $batchmode
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h_vogt 2016-03-29 21:54:25 +02:00 committed by rlar
parent 9ae9968902
commit 8a12c46c57
1 changed files with 16 additions and 2 deletions
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18
examples/Monte_Carlo/MC_ring.sp
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@ -1,5 +1,9 @@
Perform Monte Carlo simulation in ngspice
* 25 stage Ring-Osc. BSIM3
* 25 stage Ring-Osc. BSIM3 with statistical variation of various model parameters
* cd into ngspice/examples/Monte_Carlo
* start in interactive mode 'ngspice MC_ring.sp' with several plots for output
* or start in batch mode, controlled by .control section (Control mode)
* with 'ngspice -b -r MC_ring.raw -o MC_ring.log MC_ring.sp'.
vin in out dc 0.5 pulse 0.5 0 0.1n 5n 1 1 1
vdd dd 0 dc 3.3
@ -138,6 +142,15 @@ cout buf ss 0.2pF
let run = run + 1
end
***** plotting **********************************************************
if $?batchmode
echo
echo Plotting not available in batch mode
echo Write linearized vout0 to vout{$mc_runs} to rawfile $rawfile
echo
write $rawfile {$plot_out}.allv
rusage
quit
else
* plot {$plot_out}.allv
plot {$plot_out}.vout0 $ just plot the tran output with nominal parameters
* setplot $plot_fft
@ -173,11 +186,12 @@ cout buf ss 0.2pF
end
* plot the histogram
set plotstyle=combplot
plot yvec-1 vs xvec $ subtract 1 because with started with unitvec containing ones
plot yvec-1 vs xvec $ subtract 1 because we started with unitvec containing ones
* calculate jitter
let diff40 = (vecmax(halfffts) - vecmin(halfffts))*1e-6
echo
echo Max. jitter is "$&diff40" MHz
end
rusage
.endc
********************************************************************************