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Diffstat (limited to 'src/devices/bus/cbus/pc9801_86.cpp')
-rw-r--r--src/devices/bus/cbus/pc9801_86.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/devices/bus/cbus/pc9801_86.cpp b/src/devices/bus/cbus/pc9801_86.cpp
index 977a70ae187..f45255d1696 100644
--- a/src/devices/bus/cbus/pc9801_86.cpp
+++ b/src/devices/bus/cbus/pc9801_86.cpp
@@ -16,7 +16,10 @@
- Make volume work
- Recording
- actual stereo sound routing (currently routes to ALL_OUTPUTS)
- - SpeakBoard: no idea about software that uses this, also board shows a single YM2608B?;
+ - SpeakBoard: no idea about software that uses this, also board shows a single YM2608B?
+ "-86 only supports ADPCM instead of PCM, while SpeakBoard has OPNA + 256 Kbit RAM"
+ Sounds like a sound core flaw since OPNA requires a rom region in any case;
+ - SpeakBoard: sounds horrible, due of the MAME mixing (same as Sega 32X, needs user to lower individual channel volumes);
- verify sound irq;
***************************************************************************/