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Diffstat (limited to 'src/devices/bus/acorn/bus.h')
-rw-r--r--src/devices/bus/acorn/bus.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/devices/bus/acorn/bus.h b/src/devices/bus/acorn/bus.h
index 02adc30a8a9..bfd9a980304 100644
--- a/src/devices/bus/acorn/bus.h
+++ b/src/devices/bus/acorn/bus.h
@@ -104,7 +104,7 @@ public:
virtual ~device_acorn_bus_interface();
// inline configuration
- void set_acorn_bus(acorn_bus_device &bus) { m_bus = &bus; }
+ void set_acorn_bus(acorn_bus_device &bus) { assert(!device().started()); m_bus = &bus; }
protected:
device_acorn_bus_interface(const machine_config &mconfig, device_t &device);