AMIGAFDC: Added ADKCONR hook-up, fixes at least sound in Ocean's Beach Volley

src/emu/machine/amigafdc.c

@@ -286,6 +286,11 @@ void amiga_fdc::adkcon_set(UINT16 data)
 	live_run();
 }
 
+UINT16 amiga_fdc::adkcon_r(void)
+{
+	return adkcon;
+}
+
 void amiga_fdc::dsklen_w(UINT16 data)
 {
 	live_sync();

src/emu/machine/amigafdc.h

@@ -24,6 +24,7 @@ public:
 	void dsklen_w(UINT16 data);
 	void adkcon_set(UINT16 data);
 	void dmacon_set(UINT16 data);
+	UINT16 adkcon_r(void);
 
 	DECLARE_FLOPPY_FORMATS( floppy_formats );
 

src/mame/machine/amiga.c

@@ -1227,6 +1227,9 @@ READ16_HANDLER( amiga_custom_r )
 
 		case REG_DSKPTL:
 			return space.machine().device<amiga_fdc>("fdc")->dskptl_r();
+
+		case REG_ADKCONR:
+			return space.machine().device<amiga_fdc>("fdc")->adkcon_r();
 	}
 
 	if (LOG_CUSTOM)

src/mess/drivers/pc9801.c

@@ -78,7 +78,6 @@
     - Arquephos: needs extra sound board(s)?
     - Asoko no Koufuku: black screen with BGM, waits at 0x225f6;
     - Aura Battler Dumbine: upd7220: unimplemented FIGD, has layer clearance bugs on gameplay;
-    - Bakasuka Wars: drawing seems busted (either mouse or upd7220)
     - Band-Kun: (how to run this without installing?)
     - Battle Chess: wants some dip-switches to be on in DSW4, too slow during IA thinking?
 	- Bishoujo Audition: Moans with a "(program) ended. remove the floppy disk and turn off the poewr."