Modified the layout structure to replace the interleaved arrays of

columns with individual instances at equal spacing.  This avoids
an issue with magic's extraction of interleaved arrays and allows
correct LVS without flattening the cell, as was done previously.
The layout has changed but the physical mask layers remain the
same.

Author: RTimothyEdwards

lvs/netgen.log

@@ -17,7 +17,7 @@ set circuit2 [readnet spice $hvlib]
 readnet spice $hdlib $circuit2
 readnet spice ../netlist/schematic/sky130_ef_ip__rdac3v_8bit.spice $circuit2
 
-debug on
+# debug on
 
 lvs "$circuit1 sky130_ef_ip__rdac3v_8bit" "$circuit2 sky130_ef_ip__rdac3v_8bit" \
         $setupfile sky130_ef_ip__rdac3v_8bit_comp.out

lvs/run_lvs.tcl

@@ -1509,10 +1509,37 @@ rect 25534 75 25543 447
 rect 25865 75 25875 447
 rect 25534 66 25875 75
 use dac_3v_column  dac_3v_column_0
-array 0 7 2132 0 0 15271
 timestamp 1653060931
 transform 1 0 7331 0 1 322
 box -20 -7 1049 15264
+use dac_3v_column  dac_3v_column_1
+timestamp 1653060931
+transform 1 0 9463 0 1 322
+box -20 -7 1049 15264
+use dac_3v_column  dac_3v_column_2
+timestamp 1653060931
+transform 1 0 11595 0 1 322
+box -20 -7 1049 15264
+use dac_3v_column  dac_3v_column_3
+timestamp 1653060931
+transform 1 0 13727 0 1 322
+box -20 -7 1049 15264
+use dac_3v_column  dac_3v_column_4
+timestamp 1653060931
+transform 1 0 15859 0 1 322
+box -20 -7 1049 15264
+use dac_3v_column  dac_3v_column_5
+timestamp 1653060931
+transform 1 0 17991 0 1 322
+box -20 -7 1049 15264
+use dac_3v_column  dac_3v_column_6
+timestamp 1653060931
+transform 1 0 20123 0 1 322
+box -20 -7 1049 15264
+use dac_3v_column  dac_3v_column_7
+timestamp 1653060931
+transform 1 0 22255 0 1 322
+box -20 -7 1049 15264
 use dac_3v_column_dummy  dac_3v_column_dummy_0
 timestamp 1653061945
 transform 1 0 6266 0 1 322
@@ -1522,11 +1549,38 @@ timestamp 1653061945
 transform 1 0 24386 0 1 322
 box -18 -7 1049 15272
 use dac_3v_column_odd  dac_3v_column_odd_0
-array 0 7 2132 0 0 15270
 timestamp 1653060931
 transform 1 0 8398 0 1 322
 box -20 -7 1049 15263
-use follower_amp  follower_amp_0 ../../sky130_ef_ip__samplehold/mag
+use dac_3v_column_odd  dac_3v_column_odd_1
+timestamp 1653060931
+transform 1 0 10530 0 1 322
+box -20 -7 1049 15263
+use dac_3v_column_odd  dac_3v_column_odd_2
+timestamp 1653060931
+transform 1 0 12662 0 1 322
+box -20 -7 1049 15263
+use dac_3v_column_odd  dac_3v_column_odd_3
+timestamp 1653060931
+transform 1 0 14794 0 1 322
+box -20 -7 1049 15263
+use dac_3v_column_odd  dac_3v_column_odd_4
+timestamp 1653060931
+transform 1 0 16926 0 1 322
+box -20 -7 1049 15263
+use dac_3v_column_odd  dac_3v_column_odd_5
+timestamp 1653060931
+transform 1 0 19058 0 1 322
+box -20 -7 1049 15263
+use dac_3v_column_odd  dac_3v_column_odd_6
+timestamp 1653060931
+transform 1 0 21190 0 1 322
+box -20 -7 1049 15263
+use dac_3v_column_odd  dac_3v_column_odd_7
+timestamp 1653060931
+transform 1 0 23322 0 1 322
+box -20 -7 1049 15263
+use follower_amp  follower_amp_0 ../dependencies/sky130_ef_ip__samplehold/mag
 timestamp 1718228583
 transform 0 1 12491 1 0 16882
 box 0 0 4377 11129

lvs/run_lvs_flat.sh

@@ -1,4 +1,10 @@
 #! /bin/bash
 
-xschem -n -s -r -x -q --tcl "set lvs_netlist 1" --rcfile $PDK_ROOT/$PDK/libs.tech/xschem/xschemrc -o ../netlist/schematic -N sky130_ef_ip__rdac3v_8bit.spice sky130_ef_ip__rdac3v_8bit.sch
+project=sky130_ef_ip__rdac3v_8bit
+
+echo ${PDK_ROOT:=/usr/share/pdk} > /dev/null
+echo ${PDK:=sky130A} > /dev/null
+
+# xschem -n -s -r -x -q --tcl "set lvs_netlist 1" --rcfile $PDK_ROOT/$PDK/libs.tech/xschem/xschemrc -o ../netlist/schematic -N $project.spice $project.sch
+xschem -n -s -r -x -q --tcl "set lvs_netlist 1" --rcfile xschemrc -o ../netlist/schematic -N $project.spice $project.sch