diff --git a/hash/coleco.xml b/hash/coleco.xml
index 7a33495733e..b8a93b8fae2 100644
--- a/hash/coleco.xml
+++ b/hash/coleco.xml
@@ -1809,9 +1809,10 @@
 		<info name="serial" value="SE220" />
 		<part name="cart" interface="coleco_cart">
 			<dataarea name="rom" size="20480">
-				<rom name="secalpha.1" size="8192" crc="9299539b" sha1="880beb9a4df332948052b40eef09b6c877de5f9e" offset="0x0000" />
-				<rom name="secalpha.2" size="8192" crc="c8d6e83d" sha1="366877e0b68cdf2e4bfde38d9ce72eed97946f89" offset="0x2000" />
-				<rom name="secalpha.3" size="4096" crc="354a3b2f" sha1="ff8966cec010248af60d2e2abee8a949c154ea25" offset="0x4000" />
+				<rom name="secalpha.1" size="8192" crc="9299539b" sha1="880beb9a4df332948052b40eef09b6c877de5f9e" offset="0x0000" /> <!-- 2364 -->
+				<rom name="secalpha.2" size="8192" crc="c8d6e83d" sha1="366877e0b68cdf2e4bfde38d9ce72eed97946f89" offset="0x2000" /> <!-- 2364 -->
+				<rom name="secalpha.3" size="4096" crc="354a3b2f" sha1="ff8966cec010248af60d2e2abee8a949c154ea25" offset="0x4000" /> <!-- 2332 -->
+				 <!-- NOTE: on this PCB, 2332 upper half is inaccessible and returns open bus, this misfeature is not yet emulated -->
 			</dataarea>
 		</part>
 	</software>