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-rw-r--r--src/devices/bus/astrocde/exp.cpp14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/devices/bus/astrocde/exp.cpp b/src/devices/bus/astrocde/exp.cpp
index 40b6fbecbc4..9fe3c9f3fda 100644
--- a/src/devices/bus/astrocde/exp.cpp
+++ b/src/devices/bus/astrocde/exp.cpp
@@ -74,6 +74,14 @@ READ8_MEMBER(astrocade_exp_device::read)
return 0xff;
}
+READ8_MEMBER(astrocade_exp_device::read_io)
+{
+ if (m_card)
+ return m_card->read_io(space, offset);
+ else
+ return 0xff;
+}
+
/*-------------------------------------------------
write
-------------------------------------------------*/
@@ -83,3 +91,9 @@ WRITE8_MEMBER(astrocade_exp_device::write)
if (m_card)
m_card->write(space, offset, data);
}
+
+WRITE8_MEMBER(astrocade_exp_device::write_io)
+{
+ if (m_card)
+ m_card->write_io(space, offset, data);
+}