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-rw-r--r--src/devices/machine/ds128x.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/machine/ds128x.h b/src/devices/machine/ds128x.h
index f3fb9998d15..671d3ee0a6f 100644
--- a/src/devices/machine/ds128x.h
+++ b/src/devices/machine/ds128x.h
@@ -14,7 +14,7 @@ class ds12885_device : public mc146818_device
{
public:
// construction/destruction
- ds12885_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+ ds12885_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 32'768);
protected:
virtual int data_size() override { return 128; }