diff --git a/src/mame/audio/seibu.c b/src/mame/audio/seibu.c
index 4e858b618ef..d4616bf29fc 100644
--- a/src/mame/audio/seibu.c
+++ b/src/mame/audio/seibu.c
@@ -479,12 +479,15 @@ ADDRESS_MAP_END
 
 /***************************************************************************
     Seibu ADPCM device
+    (MSM5205 with interface to sample ROM provided by YM3931)
+
+    FIXME: hook up an actual MSM5205 in place of this custom implementation
 ***************************************************************************/
 
 const device_type SEIBU_ADPCM = &device_creator<seibu_adpcm_device>;
 
 seibu_adpcm_device::seibu_adpcm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
-	: device_t(mconfig, SEIBU_ADPCM, "Seibu ADPCM", tag, owner, clock, "seibu_adpcm", __FILE__),
+	: device_t(mconfig, SEIBU_ADPCM, "Seibu ADPCM (MSM5205)", tag, owner, clock, "seibu_adpcm", __FILE__),
 		device_sound_interface(mconfig, *this),
 		m_stream(NULL),
 		m_current(0),
diff --git a/src/mame/drivers/cabal.c b/src/mame/drivers/cabal.c
index 023372a298d..3e26f1452c0 100644
--- a/src/mame/drivers/cabal.c
+++ b/src/mame/drivers/cabal.c
@@ -9,9 +9,6 @@ driver by Carlos A. Lozano Baides
 The original uses 2xYM3931 for sound
 The bootleg uses YM2151 + 2xZ80 used as ADPCM players
 
-Coin inputs are handled by the sound CPU, so they don't work with sound
-disabled. Use the service switch instead.
-
 
 MEMORY MAP
 0x00000 - 0x3ffff   ROM