diff --git a/README.md b/README.md
index 7354e12..4c0e966 100644
--- a/README.md
+++ b/README.md
@@ -276,6 +276,32 @@ I do not know the file extension limits for this system.
 
 There is no bios for this system
 <br><br>
+<h2>Sega Master System</h2>
+
+Code example
+
+```
+<div style="width:640px;height:480px;max-width:100%">
+        <div id="game"></div>
+      </div>
+<script type="text/javascript">
+    EJS_player = '#game';
+    EJS_gameUrl = ''; // Url to Game rom
+    EJS_core = 'segaMS';
+    EJS_pathtodata = 'data/'; //path to all of the wasm and js files. MUST all be in the same directory!!
+</script>
+<script src="data/loader.js"></script>
+```
+
+I do not know the file extension limits for this system.
+
+bios_E.sms :	MasterSystem EU BIOS (bootrom) - Optional	840481177270d5642a14ca71ee72844c
+
+bios_U.sms : MasterSystem US BIOS (bootrom) - Optional	840481177270d5642a14ca71ee72844c
+
+bios_J.sms : MasterSystem JP BIOS (bootrom) - Optional	24a519c53f67b00640d0048ef7089105
+<br><br>
+
 <h2>Sega CD</h2>
 
 Code example