diff --git a/src/emu/machine/i8214.c b/src/emu/machine/i8214.c
index 820fffecf46..78b60178690 100644
--- a/src/emu/machine/i8214.c
+++ b/src/emu/machine/i8214.c
@@ -44,11 +44,11 @@ inline void i8214_device::trigger_interrupt(int level)
 	m_int_dis = 1;
 
 	// disable next level group
-	m_out_enlg_func(0);
+	m_write_enlg(0);
 
 	// toggle interrupt line
-	m_out_int_func(ASSERT_LINE);
-	m_out_int_func(CLEAR_LINE);
+	m_write_irq(ASSERT_LINE);
+	m_write_irq(CLEAR_LINE);
 }
 
 
@@ -91,34 +91,14 @@ inline void i8214_device::check_interrupt()
 //  i8214_device - constructor
 //-------------------------------------------------
 
-i8214_device::i8214_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
-	: device_t(mconfig, I8214, "I8214", tag, owner, clock, "i8214", __FILE__)
+i8214_device::i8214_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+	device_t(mconfig, I8214, "I8214", tag, owner, clock, "i8214", __FILE__),
+	m_write_irq(*this),
+	m_write_enlg(*this)
 {
 }
 
 
-//-------------------------------------------------
-//  device_config_complete - perform any
-//  operations now that the configuration is
-//  complete
-//-------------------------------------------------
-
-void i8214_device::device_config_complete()
-{
-	// inherit a copy of the static data
-	const i8214_interface *intf = reinterpret_cast<const i8214_interface *>(static_config());
-	if (intf != NULL)
-		*static_cast<i8214_interface *>(this) = *intf;
-
-	// or initialize to defaults if none provided
-	else
-	{
-		memset(&m_out_int_cb, 0, sizeof(m_out_int_cb));
-		memset(&m_out_enlg_cb, 0, sizeof(m_out_enlg_cb));
-	}
-}
-
-
 //-------------------------------------------------
 //  device_start - device-specific startup
 //-------------------------------------------------
@@ -126,8 +106,8 @@ void i8214_device::device_config_complete()
 void i8214_device::device_start()
 {
 	// resolve callbacks
-	m_out_int_func.resolve(m_out_int_cb, *this);
-	m_out_enlg_func.resolve(m_out_enlg_cb, *this);
+	m_write_irq.resolve_safe();
+	m_write_enlg.resolve_safe();
 
 	m_int_dis = 0;
 
@@ -170,7 +150,7 @@ void i8214_device::b_w(UINT8 data)
 	m_int_dis = 0;
 
 	// enable next level group
-	m_out_enlg_func(1);
+	m_write_enlg(1);
 
 	check_interrupt();
 }
diff --git a/src/emu/machine/i8214.h b/src/emu/machine/i8214.h
index a5fe2c9ae0a..deae3c2fa45 100644
--- a/src/emu/machine/i8214.h
+++ b/src/emu/machine/i8214.h
@@ -37,13 +37,11 @@
 //  INTERFACE CONFIGURATION MACROS
 ///*************************************************************************
 
-#define MCFG_I8214_ADD(_tag, _clock, _config) \
-	MCFG_DEVICE_ADD(_tag, I8214, _clock)    \
-	MCFG_DEVICE_CONFIG(_config)
+#define MCFG_I8214_IRQ_CALLBACK(_write) \
+	devcb = &i8214_device::set_irq_wr_callback(*device, DEVCB2_##_write);
 
-
-#define I8214_INTERFACE(name) \
-	const i8214_interface (name) =
+#define MCFG_I8214_ENLG_CALLBACK(_write) \
+	devcb = &i8214_device::set_enlg_wr_callback(*device, DEVCB2_##_write);
 
 
 
@@ -51,23 +49,17 @@
 //  TYPE DEFINITIONS
 ///*************************************************************************
 
-// ======================> i8214_interface
-
-struct i8214_interface
-{
-	devcb_write_line    m_out_int_cb;
-	devcb_write_line    m_out_enlg_cb;
-};
-
-
 // ======================> i8214_device
 
-class i8214_device :    public device_t, public i8214_interface
+class i8214_device :    public device_t
 {
 public:
 	// construction/destruction
 	i8214_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
 
+	template<class _Object> static devcb2_base &set_irq_wr_callback(device_t &device, _Object object) { return downcast<i8214_device &>(device).m_write_irq.set_callback(object); }
+	template<class _Object> static devcb2_base &set_enlg_wr_callback(device_t &device, _Object object) { return downcast<i8214_device &>(device).m_write_enlg.set_callback(object); }
+
 	DECLARE_WRITE_LINE_MEMBER( sgs_w );
 	DECLARE_WRITE_LINE_MEMBER( etlg_w );
 	DECLARE_WRITE_LINE_MEMBER( inte_w );
@@ -78,15 +70,14 @@ public:
 
 protected:
 	// device-level overrides
-	virtual void device_config_complete();
 	virtual void device_start();
 
 private:
 	inline void trigger_interrupt(int level);
 	inline void check_interrupt();
 
-	devcb_resolved_write_line   m_out_int_func;
-	devcb_resolved_write_line   m_out_enlg_func;
+	devcb2_write_line   m_write_irq;
+	devcb2_write_line   m_write_enlg;
 
 	int m_inte;                 // interrupt enable
 	int m_int_dis;              // interrupt disable flip-flop
diff --git a/src/mess/drivers/v1050.c b/src/mess/drivers/v1050.c
index 28fc5b1ebc3..a8996fbf4ea 100644
--- a/src/mess/drivers/v1050.c
+++ b/src/mess/drivers/v1050.c
@@ -666,12 +666,6 @@ WRITE_LINE_MEMBER(v1050_state::pic_int_w)
 	}
 }
 
-static I8214_INTERFACE( pic_intf )
-{
-	DEVCB_DRIVER_LINE_MEMBER(v1050_state,pic_int_w),
-	DEVCB_NULL
-};
-
 // Display 8255A Interface
 
 WRITE8_MEMBER(v1050_state::disp_ppi_pc_w)
@@ -1120,7 +1114,8 @@ static MACHINE_CONFIG_START( v1050, v1050_state )
 	MCFG_FRAGMENT_ADD(v1050_video)
 
 	// devices
-	MCFG_I8214_ADD(UPB8214_TAG, XTAL_16MHz/4, pic_intf)
+	MCFG_DEVICE_ADD(UPB8214_TAG, I8214, XTAL_16MHz/4)
+	MCFG_I8214_IRQ_CALLBACK(WRITELINE(v1050_state, pic_int_w))
 
 	MCFG_DEVICE_ADD(MSM58321RS_TAG, MSM58321, XTAL_32_768kHz)
 	MCFG_MSM58321_D0_HANDLER(WRITELINE(v1050_state, rtc_ppi_pa_0_w))