From 91ebb2f21fcf165b498357e3f8647fbe39b11deb Mon Sep 17 00:00:00 2001 From: angelosa Date: Sat, 26 May 2018 16:58:45 +0200 Subject: [PATCH] Notes (nw) --- src/devices/bus/cbus/pc9801_86.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) 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; ***************************************************************************/