diff --git a/src/emu/video/i8275x.h b/src/emu/video/i8275x.h
index b6ce829b266..bd72b29dcff 100644
--- a/src/emu/video/i8275x.h
+++ b/src/emu/video/i8275x.h
@@ -45,18 +45,24 @@
 //  INTERFACE CONFIGURATION MACROS
 //**************************************************************************
 
-#define MCFG_I8275_ADD(_tag, _clock, _hpixels_per_column, _display_func, _drq) \
+#define MCFG_I8275_ADD(_tag, _clock, _hpixels_per_column, _display_func) \
 	MCFG_DEVICE_ADD(_tag, I8275x, _clock) \
 	downcast<i8275x_device *>(device)->set_hpixels_per_column(_hpixels_per_column); \
-	downcast<i8275x_device *>(device)->set_display_func(_display_func); \
-	downcast<i8275x_device *>(device)->set_drq_callback(DEVCB2_##_drq);
+	downcast<i8275x_device *>(device)->set_display_func(_display_func);
+
+
+#define MCFG_I8275_DRQ_CALLBACK(_write) \
+	devcb = &i8275x_device::set_drq_wr_callback(*device, DEVCB2_##_write);
+
+#define MCFG_I8275_IRQ_CALLBACK(_write) \
+	devcb = &i8275x_device::set_irq_wr_callback(*device, DEVCB2_##_write);
+
+#define MCFG_I8275_HRTC_CALLBACK(_write) \
+	devcb = &i8275x_device::set_hrtc_wr_callback(*device, DEVCB2_##_write);
+
+#define MCFG_I8275_VRTC_CALLBACK(_write) \
+	devcb = &i8275x_device::set_vrtc_wr_callback(*device, DEVCB2_##_write);
 
-#define MCFG_I8275_IRQ_CALLBACK(_irq) \
-	downcast<i8275x_device *>(device)->set_irq_callback(DEVCB2_##_irq);
-#define MCFG_I8275_HRTC_CALLBACK(_hrtc) \
-	downcast<i8275x_device *>(device)->set_hrtc_callback(DEVCB2_##_hrtc);
-#define MCFG_I8275_VRTC_CALLBACK(_vrtc) \
-	downcast<i8275x_device *>(device)->set_vrtc_callback(DEVCB2_##_vrtc);
 
 
 
@@ -82,13 +88,14 @@ public:
 	// construction/destruction
 	i8275x_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
 
-	template<class _irq> void set_irq_callback(_irq irq) { m_write_irq.set_callback(irq); }
-	template<class _drq> void set_drq_callback(_drq drq) { m_write_drq.set_callback(drq); }
-	template<class _hrtc> void set_hrtc_callback(_hrtc hrtc) { m_write_hrtc.set_callback(hrtc); }
-	template<class _vrtc> void set_vrtc_callback(_vrtc vrtc) { m_write_vrtc.set_callback(vrtc); }
 	void set_hpixels_per_column(int hpixels_per_column) { m_hpixels_per_column = hpixels_per_column; }
 	void set_display_func(i8275_display_pixels_func func) { m_display_pixels = func; }
 
+	template<class _Object> static devcb2_base &set_drq_wr_callback(device_t &device, _Object object) { return downcast<i8275x_device &>(device).m_write_drq.set_callback(object); }
+	template<class _Object> static devcb2_base &set_irq_wr_callback(device_t &device, _Object object) { return downcast<i8275x_device &>(device).m_write_irq.set_callback(object); }
+	template<class _Object> static devcb2_base &set_hrtc_wr_callback(device_t &device, _Object object) { return downcast<i8275x_device &>(device).m_write_hrtc.set_callback(object); }
+	template<class _Object> static devcb2_base &set_vrtc_wr_callback(device_t &device, _Object object) { return downcast<i8275x_device &>(device).m_write_vrtc.set_callback(object); }
+
 	DECLARE_READ8_MEMBER( read );
 	DECLARE_WRITE8_MEMBER( write );
 
diff --git a/src/mess/drivers/wicat.c b/src/mess/drivers/wicat.c
index 73490078456..ab2d84d3b58 100644
--- a/src/mess/drivers/wicat.c
+++ b/src/mess/drivers/wicat.c
@@ -887,7 +887,8 @@ static MACHINE_CONFIG_START( wicat, wicat_state )
 
 	MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette")
 
-	MCFG_I8275_ADD("video",XTAL_19_6608MHz/8,9,wicat_display_pixels,DEVWRITELINE("videodma",am9517a_device, dreq0_w))
+	MCFG_I8275_ADD("video",XTAL_19_6608MHz/8,9,wicat_display_pixels)
+	MCFG_I8275_DRQ_CALLBACK(DEVWRITELINE("videodma",am9517a_device, dreq0_w))
 	MCFG_I8275_IRQ_CALLBACK(WRITELINE(wicat_state,crtc_cb))
 	MCFG_VIDEO_SET_SCREEN("screen")
 
diff --git a/src/mess/drivers/zorba.c b/src/mess/drivers/zorba.c
index e0f6935ab21..b0ecf6e0d7c 100644
--- a/src/mess/drivers/zorba.c
+++ b/src/mess/drivers/zorba.c
@@ -394,7 +394,8 @@ static MACHINE_CONFIG_START( zorba, zorba_state )
 	MCFG_PIT8253_CLK1(XTAL_24MHz / 3) /* Timer 1: ? */
 	MCFG_PIT8253_CLK2(XTAL_24MHz / 3) /* Timer 2: ? */
 
-	MCFG_I8275_ADD("crtc", XTAL_14_31818MHz/7, 8, zorba_update_chr, DEVWRITELINE("dma", z80dma_device, rdy_w))
+	MCFG_I8275_ADD("crtc", XTAL_14_31818MHz/7, 8, zorba_update_chr)
+	MCFG_I8275_DRQ_CALLBACK(DEVWRITELINE("dma", z80dma_device, rdy_w))
 	MCFG_I8275_IRQ_CALLBACK(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
 	MCFG_FD1793x_ADD("fdc", XTAL_24MHz / 24)
 	MCFG_FLOPPY_DRIVE_ADD("fdc:0", zorba_floppies, "525dd", floppy_image_device::default_floppy_formats)
diff --git a/src/mess/video/mikromik.c b/src/mess/video/mikromik.c
index d2f4fe1a700..c9950113f87 100644
--- a/src/mess/video/mikromik.c
+++ b/src/mess/video/mikromik.c
@@ -114,7 +114,8 @@ MACHINE_CONFIG_FRAGMENT( mm1m6_video )
 	MCFG_GFXDECODE_ADD("gfxdecode", "palette", mm1)
 	MCFG_PALETTE_ADD_MONOCHROME_GREEN_HIGHLIGHT("palette")
 
-	MCFG_I8275_ADD(I8275_TAG, XTAL_18_720MHz/8, 8, crtc_display_pixels, DEVWRITELINE(I8237_TAG, am9517a_device, dreq0_w))
+	MCFG_I8275_ADD(I8275_TAG, XTAL_18_720MHz/8, 8, crtc_display_pixels)
+	MCFG_I8275_DRQ_CALLBACK(DEVWRITELINE(I8237_TAG, am9517a_device, dreq0_w))
 	MCFG_VIDEO_SET_SCREEN(SCREEN_TAG)
 
 	MCFG_DEVICE_ADD(UPD7220_TAG, UPD7220, XTAL_18_720MHz/8)