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Diffstat (limited to 'src/devices/machine/er2055.h')
-rw-r--r--src/devices/machine/er2055.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/machine/er2055.h b/src/devices/machine/er2055.h
index ac6e9a55371..49497ed7241 100644
--- a/src/devices/machine/er2055.h
+++ b/src/devices/machine/er2055.h
@@ -28,7 +28,7 @@ class er2055_device : public device_t,
{
public:
// construction/destruction
- er2055_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+ er2055_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
// I/O operations
uint8_t data() const { return m_data; }