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Diffstat (limited to 'src/devices/bus/astrocde/exp.h')
-rw-r--r--src/devices/bus/astrocde/exp.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/devices/bus/astrocde/exp.h b/src/devices/bus/astrocde/exp.h
index e6c97862224..a01db130974 100644
--- a/src/devices/bus/astrocde/exp.h
+++ b/src/devices/bus/astrocde/exp.h
@@ -14,6 +14,8 @@ public:
// reading and writing
virtual DECLARE_READ8_MEMBER(read) { return 0xff; }
virtual DECLARE_WRITE8_MEMBER(write) { }
+ virtual DECLARE_READ8_MEMBER(read_io) { return 0xff; }
+ virtual DECLARE_WRITE8_MEMBER(write_io) { }
protected:
device_astrocade_card_interface(const machine_config &mconfig, device_t &device);
@@ -46,6 +48,8 @@ public:
// reading and writing
virtual DECLARE_READ8_MEMBER(read);
virtual DECLARE_WRITE8_MEMBER(write);
+ virtual DECLARE_READ8_MEMBER(read_io);
+ virtual DECLARE_WRITE8_MEMBER(write_io);
protected:
bool m_card_mounted;