diff --git a/src/mess/machine/omti8621.c b/src/mess/machine/omti8621.c
index ef36bae9e06..1b76be197fa 100644
--- a/src/mess/machine/omti8621.c
+++ b/src/mess/machine/omti8621.c
@@ -1249,6 +1249,21 @@ void omti8621_device::fdc_drq_w(bool state)
 	m_isa->drq2_w(state ? ASSERT_LINE : CLEAR_LINE);
 }
 
+UINT8 omti8621_device::dack_r(int line)
+{
+	return m_fdc->dma_r();
+}
+
+void omti8621_device::dack_w(int line, UINT8 data)
+{
+	return m_fdc->dma_w(data);
+}
+
+void omti8621_device::eop_w(int state)
+{
+	m_fdc->tc_w(state == ASSERT_LINE);
+}
+
 //##########################################################################
 
 // device type definition
diff --git a/src/mess/machine/omti8621.h b/src/mess/machine/omti8621.h
index 9a40de7ff61..57db103205c 100644
--- a/src/mess/machine/omti8621.h
+++ b/src/mess/machine/omti8621.h
@@ -78,6 +78,10 @@ protected:
 	virtual machine_config_constructor device_mconfig_additions() const;
 	virtual ioport_constructor device_input_ports() const;
 
+	virtual UINT8 dack_r(int line);
+	virtual void dack_w(int line, UINT8 data);
+	virtual void eop_w(int state);
+
 	void set_interrupt(enum line_state line_state);
 
 private: