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-rw-r--r--src/mame/drivers/wallc.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mame/drivers/wallc.cpp b/src/mame/drivers/wallc.cpp
index b3c42a1d9d3..ad1598fb56f 100644
--- a/src/mame/drivers/wallc.cpp
+++ b/src/mame/drivers/wallc.cpp
@@ -702,6 +702,8 @@ DRIVER_INIT_MEMBER(wallc_state, sidam)
186a: nop
186b: nop
+ Main PCB has a Microchip AY-3-8912A PSG, a 3.6V battery and no ROM numbered 4.
+ A daughterboard contains the Z80 and some RAM.
*/
ROM_START( unkitpkr )
ROM_REGION( 0x8000, "maincpu", 0 )