From 11181d7f3cfef03377372732e1da5d55a3e8ec1b Mon Sep 17 00:00:00 2001
From: Andrey Miroshnikov <andrey@technepisteme.xyz>
Date: Thu, 14 Oct 2021 11:13:32 +0100
Subject: [PATCH] learning nmigen: Added link to mail list thread, a bit more
 info on yosys show.

---
 docs/learning_nmigen.mdwn | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/docs/learning_nmigen.mdwn b/docs/learning_nmigen.mdwn
index 82b8e9c2e..795a7c72b 100644
--- a/docs/learning_nmigen.mdwn
+++ b/docs/learning_nmigen.mdwn
@@ -1,6 +1,7 @@
 # Learning nmigen
 
-* links to community <https://nmigen.info/nmigen/latest/tutorial.html>
+* Link to the mail thread: <http://lists.libre-soc.org/pipermail/libre-soc-dev/2021-October/003858.html>
+* Links to community <https://nmigen.info/nmigen/latest/tutorial.html>
 * Useful counter tutorial (gtkwave and verilog) for latest nmigen <https://nmigen.info/nmigen/latest/start.html>
 * Robert Baruch's nmigen tutorials are really good:
   <https://github.com/RobertBaruch/nmigen-tutorial>
@@ -38,7 +39,9 @@ Commands:
 
 ## Block Digram with Yosys
 
-1. Open yosys in interactive mode and load the generated verilog file. Calling "show" should generate the diagram .dot file (as a temp file "~/.yosys_show.dot") and open it using xdot. *You may need to install xdot separately with apt*. Xdot is **interactive** (you can click on blocks and nodes!).
+Open yosys in interactive mode and load the generated verilog file. Calling "show" should generate the diagram .dot file (as a temp file "~/.yosys_show.dot") and open it using xdot. For multi-level modules, you can specify the level of hierarchy by specifying the name of the module. For example "show top" will display the diagram of the top-level (without the underlying the details of the sub-modules).
+
+*You may need to install xdot separately with apt*. Xdot is **interactive** (you can click on blocks and nodes!).
 
 Yosys commands:
 
-- 
2.30.2