From 8a12c46c57c47127ce60c6fdd7607ac74bee169d Mon Sep 17 00:00:00 2001
From: h_vogt <h_vogt>
Date: Tue, 29 Mar 2016 21:54:25 +0200
Subject: [PATCH] MC_ring.sp: start with batch mode or interactive mode with
 variable $batchmode

---
 examples/Monte_Carlo/MC_ring.sp | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/examples/Monte_Carlo/MC_ring.sp b/examples/Monte_Carlo/MC_ring.sp
index 58e5c141f..884c04782 100644
--- a/examples/Monte_Carlo/MC_ring.sp
+++ b/examples/Monte_Carlo/MC_ring.sp
@@ -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
 ********************************************************************************