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Diffstat (limited to 'src/devices/bus/bbc/tube/tube.cpp')
-rw-r--r--src/devices/bus/bbc/tube/tube.cpp21
1 files changed, 16 insertions, 5 deletions
diff --git a/src/devices/bus/bbc/tube/tube.cpp b/src/devices/bus/bbc/tube/tube.cpp
index ab232a6ce04..173dd4cc2b7 100644
--- a/src/devices/bus/bbc/tube/tube.cpp
+++ b/src/devices/bus/bbc/tube/tube.cpp
@@ -71,12 +71,27 @@ bbc_tube_slot_device::~bbc_tube_slot_device()
//-------------------------------------------------
+// device_validity_check -
+//-------------------------------------------------
+
+void bbc_tube_slot_device::device_validity_check(validity_checker &valid) const
+{
+ device_t *const carddev = get_card_device();
+ if (carddev && !dynamic_cast<device_bbc_tube_interface *>(carddev))
+ osd_printf_error("Card device %s (%s) does not implement device_bbc_tube_interface\n", carddev->tag(), carddev->name());
+}
+
+
+//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void bbc_tube_slot_device::device_start()
{
- m_card = dynamic_cast<device_bbc_tube_interface *>(get_card_device());
+ device_t *const carddev = get_card_device();
+ m_card = dynamic_cast<device_bbc_tube_interface *>(carddev);
+ if (carddev && !m_card)
+ fatalerror("Card device %s (%s) does not implement device_bbc_tube_interface\n", carddev->tag(), carddev->name());
// resolve callbacks
m_irq_handler.resolve_safe();
@@ -89,10 +104,6 @@ void bbc_tube_slot_device::device_start()
void bbc_tube_slot_device::device_reset()
{
- if (get_card_device())
- {
- get_card_device()->reset();
- }
}