From c12d721da29592b4e3565dd2ab7e5aa05f8e933a Mon Sep 17 00:00:00 2001
From: Franco Colmenarez <info@francoacg.com>
Date: Thu, 13 Oct 2022 12:23:43 -0500
Subject: [PATCH] update readme

---
 README.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 5840d77..281ebd4 100644
--- a/README.md
+++ b/README.md
@@ -4,4 +4,6 @@ Work in progress experimental SNES emulator written in Rust.
 ## Resources
 * https://softpixel.com/~cwright/sianse/docs/65816NFO.HTM
 * https://ersanio.gitbook.io/assembly-for-the-snes
-* https://wiki.superfamicom.org
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+* https://wiki.superfamicom.org
+* BCD addition and substraction: https://ehaskins.com/2018-01-30%20Z80%20DAA/
+* 65816 programming manual: https://www.nesdev.org/w/images/default/7/76/Programmanual.pdf
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