diff --git a/hash/pc98.xml b/hash/pc98.xml
index 1f3f69101a4..c67cec1ed46 100644
--- a/hash/pc98.xml
+++ b/hash/pc98.xml
@@ -11258,12 +11258,14 @@ Has optional [RS-MIDI] sound support
 		</part>
 	</software>
 
+    <!-- TODO: non-bootable .hdm version known to exist (will Abort Retry Fail when dir from MS-DOS) -->
 	<software name="chittyt" supported="no">
-		<description>Chitty Chitty Train</description>
+		<description>Chitty Chitty Train (.fdi installed hack)</description>
 		<year>1993</year>
 		<publisher>ビッツー (Bit²)</publisher>
 		<notes><![CDATA[
 Requires 3.5" floppy emulation
+Throws MSDOS.SYS error when booted from pc9821 class machines, I/O Error otherwise
 ]]></notes>
 		<info name="alt_title" value="チキチキトレイン" />
 		<info name="release" value="19930811" />
@@ -11274,6 +11276,23 @@ Requires 3.5" floppy emulation
 		</part>
 	</software>
 
+	<software name="chittyta" cloneof="chittyt" supported="yes">
+		<!-- Version provided by INSTAL.COM on disk -->
+		<description>Chitty Chitty Train (Ver 1.00, .hdm installed hack)</description>
+		<year>1993</year>
+		<publisher>ビッツー (Bit²)</publisher>
+		<notes><![CDATA[
+Game directory on autobootable disk
+]]></notes>
+		<info name="alt_title" value="チキチキトレイン" />
+		<info name="release" value="19930811" />
+		<part name="flop1" interface="floppy_5_25">
+			<dataarea name="flop" size="1261568">
+				<rom name="chitty chitty train fd installed.hdm" size="1261568" crc="e352d546" sha1="791be0e897981c71f49acb28fbd6bc580c4ea617" offset="0" status="baddump" />
+			</dataarea>
+		</part>
+	</software>
+
 	<software name="choubaku" supported="yes">
 		<description>Chou·Baku</description>
 		<year>1993</year>