From 0bb9cf5bc3127d579b047bb07b0759c6dc7541f4 Mon Sep 17 00:00:00 2001
From: CNLohr <lohr85@gmail.com>
Date: Wed, 1 Mar 2023 11:07:42 -0800
Subject: [PATCH] Update README.md

---
 README.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/README.md b/README.md
index 7843a0c..f4c31ee 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,11 @@ Currently, it ignores all the respone codes, except when querying the chip.  But
 
 Anyone who wants to write a good/nice utility should probably look at the code in this folder.
 
+## Quick Reference
+ * Needed for programming/debugging: `SWIO` is on `PD1`
+ * Optional (not needed, can be configured as output if fuse set): `NRST` is on `PD7`
+ * UART TX (optional) is on: `PD5`
+
 ###
  Footnots/links
 
-- 
GitLab