diff --git a/hash/a800_cass.xml b/hash/a800_cass.xml
index aae6cb5b701..fc447447ec7 100644
--- a/hash/a800_cass.xml
+++ b/hash/a800_cass.xml
@@ -12,11 +12,35 @@
                 <rom name="serpentine (atari 400) (side a).cas" size="18938" crc="7a42459f" sha1="f717fdf02c55ecdbd8f4284da249bd87abb09708"/>
             </dataarea>
         </part>
-         <part name="cass2" interface="a800_cass">
+        <part name="cass2" interface="a800_cass">
             <dataarea name="cass" size="19059">
                 <rom name="serpentine (atari 400) (side b).cas" size="19059" crc="386999b4" sha1="4a308f95f94c00ee861ba7facbfcd0ca31e01f1f"/>
             </dataarea>
         </part>
     </software>
 
+    <software name="zaxxon" supported="no">
+        <description>Zaxxon (set 1)</description>
+        <year>1983</year>
+        <publisher>Datasoft</publisher>
+        <info name="developer" value="Ron J. Fortier"/>
+        <part name="cass1" interface="a800_cass">
+            <dataarea name="cass" size="20596">
+                <rom name="zaxxon (1983, datasoft, inc.).cas" size="20596" crc="bd63c369" sha1="8dda73ce267d9fe7afe0a0d6833525144c746c41"/>
+            </dataarea>
+        </part>
+    </software>
+
+    <software name="zaxxona" cloneof="zaxxon" supported="no">
+        <description>Zaxxon (set 2)</description>
+        <year>1984</year>
+        <publisher>US Gold</publisher>
+        <info name="developer" value="Ron J. Fortier"/>
+        <part name="cass1" interface="a800_cass">
+            <dataarea name="cass" size="20612">
+                <rom name="zaxxon (us_gold).cas" size="20612" crc="83f30fc0" sha1="3e26e3b98bd17a5097b80b27d8b595fe1411b66b"/>
+            </dataarea>
+        </part>
+    </software>
+
 </softwarelist>
\ No newline at end of file