OpenRoadArch

Author: jjcherry56

doc/CodingPractices.txt

@@ -1,6 +1,6 @@
 This is a compilation of many idioms in openroad code that I consider
 undesirable. Obviously other programmers have different opinions or
-they would be so pervasive.  James Cherry 04/2020
+they would not be so pervasive.  James Cherry 04/2020
 
 ................................................................
 
@@ -97,6 +97,11 @@ ad nauseam
 
 ....
 
+Do not use strings (names) to refer to database or sta objects except
+in user interface code. DEF, SDC, and verilog all use different names
+for netlist instances and nets so the names will not always match.
+
+....
 Do not use continue.
 Wrap the body in an if instead.
 

doc/OpenRoadArch.md

@@ -166,6 +166,22 @@ Regression scripts should add output files or directories to
 `.gitignore` so that running does note leave the source repository
 "dirty".
 
+The Nangate45 open source library data used by many tests is in
+`test/Nangate45`. Use the following command to add a link in the tool
+command
+
+```
+cd tool/test
+ln -s ../../../test/Nangate45
+```
+
+After the link is installed, the test script can read the liberty file
+with the command shown below.
+
+```
+read_liberty Nangate45/Nangate45_typ.lib
+```
+
 ### Builds
 
 Checking out the OpenROAD repo with --recursive installs all of the