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Diffstat (limited to 'src/mame/drivers/bfcobra.cpp')
-rw-r--r--src/mame/drivers/bfcobra.cpp6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/mame/drivers/bfcobra.cpp b/src/mame/drivers/bfcobra.cpp
index 7af75c64ae9..a182d6567f6 100644
--- a/src/mame/drivers/bfcobra.cpp
+++ b/src/mame/drivers/bfcobra.cpp
@@ -92,7 +92,7 @@
Defines
*/
#define Z80_XTAL 5910000 /* Unconfirmed */
-#define M6809_XTAL 1000000
+#define M6809_XTAL 4000000 /* Unconfirmed */
@@ -1633,7 +1633,7 @@ static MACHINE_CONFIG_START( bfcobra )
MCFG_CPU_IO_MAP(z80_io_map)
MCFG_CPU_VBLANK_INT_DRIVER("screen", bfcobra_state, vblank_gen)
- MCFG_CPU_ADD("audiocpu", M6809, M6809_XTAL)
+ MCFG_CPU_ADD("audiocpu", MC6809, M6809_XTAL) // MC6809P
MCFG_CPU_PROGRAM_MAP(m6809_prog_map)
MCFG_CPU_PERIODIC_INT_DRIVER(bfcobra_state, timer_irq, 1000)
@@ -1655,7 +1655,7 @@ static MACHINE_CONFIG_START( bfcobra )
MCFG_SPEAKER_STANDARD_MONO("mono")
- MCFG_SOUND_ADD("aysnd", AY8910, M6809_XTAL)
+ MCFG_SOUND_ADD("aysnd", AY8910, M6809_XTAL / 4)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.20)
MCFG_SOUND_ADD("upd", UPD7759, UPD7759_STANDARD_CLOCK)