diff --git a/hash/pc98.xml b/hash/pc98.xml
index 623c15e9c5b..ddde2371997 100644
--- a/hash/pc98.xml
+++ b/hash/pc98.xml
@@ -9972,18 +9972,18 @@ other two disks
19??
<unknown>
-
-
+
+
-
-
+
+
-
-
+
+
@@ -10516,13 +10516,13 @@ other two disks
19??
<unknown>
-
-
+
+
-
-
+
+
@@ -12782,6 +12782,22 @@ Same as Police Quest 2 - Quest for Glory stand-alone disks
-->
+
+ SimCity
+ 1990
+ Maxis
+
+
+
+
+
+
+
+
+
+
+
+
SimCity 2000
19??
@@ -12936,6 +12952,22 @@ Same as Police Quest 2 - Quest for Glory stand-alone disks
+
+ Soko-ban Perfect
+ 19??
+ Thinking Rabbit
+
+
+
+
+
+
+
+
+
+
+
+
Sorcerian
19??
@@ -15159,9 +15191,9 @@ Same as Police Quest 2 - Quest for Glory stand-alone disks
Walpurgis Night 3
19??
<unknown>
-
-
-
+
+
+
@@ -15198,18 +15230,18 @@ Same as Police Quest 2 - Quest for Glory stand-alone disks
19??
<unknown>
-
-
+
+
-
-
+
+
-
-
+
+
@@ -16085,18 +16117,18 @@ Same as Police Quest 2 - Quest for Glory stand-alone disks
19??
<unknown>
-
-
+
+
-
-
+
+
-
-
+
+
diff --git a/src/mess/drivers/pc9801.c b/src/mess/drivers/pc9801.c
index 7f1aa14f679..aaea8529553 100644
--- a/src/mess/drivers/pc9801.c
+++ b/src/mess/drivers/pc9801.c
@@ -96,6 +96,7 @@
- Princess Maker 2: screen transitions are very ugly (btanb?)
- Puzznic: trips illegal irq 0x41 (?), prints an error on screen. (PC-9801RS only, writes an 1 to 0x69d2f for whatever reason, almost surely a btanb)
- Runner's High: wrong double height on the title screen;
+ - Sokoban Perfect: hangs at title screen, after loading the menu;
- Sorcerian, Twilight Zone 3: Fails initial booting, issue with 2dd irq?
- The Incredible Machine: hangs at main menu (YM mis-fires irq?)
- Uchiyama Aki no Chou Bangai: keyboard irq is fussy (sometimes it doesn't register a key press);