diff --git a/docs.py b/docs.py
index 852864c..4cba2a2 100644
--- a/docs.py
+++ b/docs.py
@@ -53,7 +53,8 @@ SEGA_CONTENTS = {
         "groovemaster.html": "GrooveMaster.ini",
     }),
     "manual": ("Manual", {
-        "keychip.html": "Keychip Modding"
+        "errors.html": "Error Codes",
+        "keychip.html": "Keychip Modding",
     }),
     # "network": ("Networking", {
     #     "allnet.html": "ALL.Net"
diff --git a/templates/pages/sega/manual/errors.html b/templates/pages/sega/manual/errors.html
new file mode 100644
index 0000000..1872a82
--- /dev/null
+++ b/templates/pages/sega/manual/errors.html
@@ -0,0 +1,370 @@
+{% extends "sega.html" %}
+{% block title %}RingEdge Errors{% endblock %}
+{% block body %}
+<h1>RingEdge Errors</h1>
+
+<h2 id="mxstartup">mxstartup</h2>
+<table>
+    <thead>
+        <tr>
+            <td>Error code</td>
+            <td>Message</td>
+            <td>Meaning</td>
+        </tr>
+    </thead>
+    <tbody>
+        <tr>
+            <td>0500</td>
+            <td>SecurityCheck error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0501</td>
+            <td>CheckEwfState error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0502</td>
+            <td>GetSystemVersion error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0503</td>
+            <td>GetsystemKeyFile</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0504</td>
+            <td>SetDiskAccessPrivilege</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0505</td>
+            <td>MountSystem</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0506</td>
+            <td>MountUpdate error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0507</td>
+            <td>ExecuteMaMaster</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0508</td>
+            <td>GetOSUpdateKeyFile error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0509</td>
+            <td>ExecuteMxOSUpdate error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0510</td>
+            <td>ChangeEWFStateEnable error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0511</td>
+            <td>GetSBRSlotOSState error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0512</td>
+            <td>Deleate Key File error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0513</td>
+            <td>MountDriver error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0514</td>
+            <td>CheckPlatform error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0540</td>
+            <td>Unmount error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0541</td>
+            <td>MountRecoveryVolume error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0543</td>
+            <td>MxChangeActivePartition error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0545</td>
+            <td>osuSystemReboot error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0546</td>
+            <td>GetSystemDiskNumber error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>????</td>
+            <td>SetBackupComputerName failed</td>
+            <td></td>
+        </tr>
+    </tbody>
+</table>
+
+<h2 id="mxsegaboot">mxsegaboot</h2>
+<table>
+    <thead>
+        <tr>
+            <td>Error code</td>
+            <td>Message</td>
+            <td>Meaning</td>
+        </tr>
+    </thead>
+    <tbody>
+        <tr>
+            <td>0010</td>
+            <td>Unexpected Game Program Failure</td>
+            <td></td>
+        </tr>
+    </tbody>
+</table>
+
+<h2 id="mxGetHwInfo">mxGetHwInfo</h2>
+<table>
+    <thead>
+        <tr>
+            <td>Error code</td>
+            <td>Message</td>
+            <td>Meaning</td>
+        </tr>
+    </thead>
+    <tbody>
+        <tr>
+            <td>0901</td>
+            <td>Wrong Platform</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0902</td>
+            <td>Wrong System Program</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0905</td>
+            <td>Graphic Function Not Found</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0906</td>
+            <td>Sound Function Not Found</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0907</td>
+            <td>Not Enough System Memory</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0908</td>
+            <td>Not Enough SRAM</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0909</td>
+            <td>Not Enough Storage Device</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0910</td>
+            <td>Wrong Resolution Setting</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0911</td>
+            <td>Wrong Horizontal / Vertical Setting</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0950</td>
+            <td>PCI Device Not Found</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0950</td>
+            <td>USB Device Not Found</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0083</td>
+            <td>Storage Device Not Acceptable</td>
+            <td></td>
+        </tr>
+    </tbody>
+</table>
+
+<h2 id="ALLNetProc">ALLNetProc</h2>
+<table>
+    <thead>
+        <tr>
+            <td>Error code</td>
+            <td>Message</td>
+            <td>Meaning</td>
+        </tr>
+    </thead>
+    <tbody>
+        <tr>
+            <td>0008</td>
+            <td>Keychip Access Failed</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0025</td>
+            <td>Main Board Malfunction</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0027</td>
+            <td>Low Battery</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8001</td>
+            <td>Network address error(DHCP)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8002</td>
+            <td>Network setting error(SYSTEM)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8003</td>
+            <td>Network address error(Dup.IP)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8004</td>
+            <td>Network setting error(Dup.IP)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8005</td>
+            <td>Network type error(WAN)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8006</td>
+            <td>Network timeout error(DHCP)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8007</td>
+            <td>Network timeout error(DNS-WAN)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8008</td>
+            <td>Network timeout error(DNS-LAN)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8103</td>
+            <td>ALL/Net System error(TIMEOUT)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8104</td>
+            <td>ALL/Net System error(REG)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8106</td>
+            <td>ALL/Net System Caution</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8111</td>
+            <td>ALL/Net System error(REG)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>8113</td>
+            <td>ALL/Net System error(MODE)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0949</td>
+            <td>Keychip Not Found</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>0800</td>
+            <td>Unknown Error.</td>
+            <td>Generic error code. Check the event log for details</td>
+        </tr>
+        <tr>
+            <td>0801</td>
+            <td>Unknown Error.</td>
+            <td>Generic error code. Check the event log for details</td>
+        </tr>
+        <tr>
+            <td>0802</td>
+            <td>Unknown Error.</td>
+            <td>Generic error code. Check the event log for details</td>
+        </tr>
+        <tr>
+            <td>0803</td>
+            <td>Unknown Error.</td>
+            <td>Generic error code. Check the event log for details</td>
+        </tr>
+        <tr>
+            <td>0901</td>
+            <td>Unknown Error.</td>
+            <td>Invalid serial number</td>
+        </tr>
+    </tbody>
+</table>
+
+<h2 id="maimai">maimai</h2>
+<table>
+    <thead>
+        <tr>
+            <td>Error code</td>
+            <td>Message</td>
+            <td>Meaning</td>
+        </tr>
+    </thead>
+    <tbody>
+        <tr>
+            <td>3101</td>
+            <td>Touch Sensor Error</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>3102</td>
+            <td>Touch Sensor Not Found</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>3103</td>
+            <td>1P/2P Touch Sensor Error(INITIALIZE)</td>
+            <td></td>
+        </tr>
+        <tr>
+            <td>3501</td>
+            <td>LCD and main board are not connected correctly</td>
+            <td></td>
+        </tr>
+    </tbody>
+</table>
+{% endblock %}
\ No newline at end of file