From d21fbbdad620eab0ab9f59b2928a5130e5383f47 Mon Sep 17 00:00:00 2001
From: AZO234 <sylph23k@gmail.com>
Date: Fri, 28 Feb 2020 05:52:41 +0900
Subject: [PATCH] mod README

---
 README.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/README.md b/README.md
index 2ee6c54..fd36746 100755
--- a/README.md
+++ b/README.md
@@ -488,6 +488,14 @@ BIOS files location
 
 BIOS files locate in 'np2kai' directory at BIOS directory (configured by RetroArch).<br>
 Configure file (np2kai.cfg) is made in 'np2kai' BIOS directory.<br>
+
+To get BIOS files, you need actual PC-98 machine.<br>
+Start MS-DOS on the actual PC-98 and execute the GETBIOS command<br>
+(included in the np2tool/np2tool.zip floppy image)<br>
+to create BIOS files.<br>
+
+Rhythm sound files are dumped from PC-98 machine with FM sound gen.<br>
+You can get sound files from [here](https://sites.google.com/site/ym2608rhythm/).
 </div></details>
 
 <details><summary>