diff --git a/hash/fmtowns_cd.xml b/hash/fmtowns_cd.xml
index e7d7dea93da..3a8321e8524 100644
--- a/hash/fmtowns_cd.xml
+++ b/hash/fmtowns_cd.xml
@@ -17458,7 +17458,8 @@ User/save disks that can be created from the game itself are not included.
 		</part>
 	</software>
 
-	<software name="mcosm">
+	<!-- requires cheat to reduce cpu clock on 16Mhz model to 75% to avoid hang -->
+	<software name="mcosm" supported="partial">
 		<!--
 		Origin: redump.org
 		<rom name="Microcosm (Japan) (Rev A) (Track 1).bin" size="423007200" crc="dce333fc" sha1="63daf9e93740a007cdfc59c9105b108a924dee68"/>
diff --git a/src/devices/cpu/i386/i386ops.hxx b/src/devices/cpu/i386/i386ops.hxx
index a063fa65d9f..ae0fcfff43a 100644
--- a/src/devices/cpu/i386/i386ops.hxx
+++ b/src/devices/cpu/i386/i386ops.hxx
@@ -1278,7 +1278,7 @@ void i386_device::i386_repeat(int invert_flag)
 			count = --REG32(ECX);
 		else
 			count = --REG16(CX);
-		if (m_cycles <= 0)
+		if (count && (m_cycles <= 0))
 			goto outofcycles;
 	}
 	while( count && (!flag || (invert_flag ? !*flag : *flag)) );