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-rw-r--r--src/mame/drivers/contra.cpp4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/mame/drivers/contra.cpp b/src/mame/drivers/contra.cpp
index 0fe6131ff58..28c0a571725 100644
--- a/src/mame/drivers/contra.cpp
+++ b/src/mame/drivers/contra.cpp
@@ -209,11 +209,11 @@ void contra_state::machine_reset()
void contra_state::contra(machine_config &config)
{
/* basic machine hardware */
- HD6309E(config, m_maincpu, XTAL(24'000'000) / 8); /* 3000000? (HD63C09EP) */
+ HD6309E(config, m_maincpu, XTAL(24'000'000) / 8); /* (HD63C09EP) */
m_maincpu->set_addrmap(AS_PROGRAM, &contra_state::contra_map);
m_maincpu->set_vblank_int("screen", FUNC(contra_state::contra_interrupt));
- MC6809E(config, m_audiocpu, XTAL(24'000'000)/8); /* 3000000? (HD68B09EP) */
+ MC6809E(config, m_audiocpu, XTAL(3'579'545) / 2 ); /* (HD68B09EP) */
m_audiocpu->set_addrmap(AS_PROGRAM, &contra_state::sound_map);
config.set_maximum_quantum(attotime::from_hz(6000)); /* enough for the sound CPU to read all commands */