diff --git a/src/emu/video/i8275x.c b/src/emu/video/i8275x.c
index 0c4cbdecd14..b4efeff5ba5 100644
--- a/src/emu/video/i8275x.c
+++ b/src/emu/video/i8275x.c
@@ -88,7 +88,7 @@ i8275x_device::i8275x_device(const machine_config &mconfig, const char *tag, dev
 		m_write_drq(*this),
 		m_write_hrtc(*this),
 		m_write_vrtc(*this),
-		m_display_pixels(NULL),
+		m_display_cb(NULL),
 		m_status(0),
 		m_param_idx(0),
 		m_param_end(0),
@@ -329,8 +329,8 @@ void i8275x_device::device_timer(emu_timer &timer, device_timer_id id, int param
 					lc = (lc - 1) & 0x0f;
 				}
 
-				if (m_display_pixels)
-				m_display_pixels(this, m_bitmap,
+				if (m_display_cb)
+				m_display_cb(this, m_bitmap,
 					sx * m_hpixels_per_column, // x position on screen of starting point
 					m_scanline, // y position on screen
 					lc, // current line of char
diff --git a/src/emu/video/i8275x.h b/src/emu/video/i8275x.h
index bd72b29dcff..0819dc6e75b 100644
--- a/src/emu/video/i8275x.h
+++ b/src/emu/video/i8275x.h
@@ -45,11 +45,11 @@
 //  INTERFACE CONFIGURATION MACROS
 //**************************************************************************
 
-#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);
+#define MCFG_I8275_CHARACTER_WIDTH(_value) \
+	i8275x_device::static_set_character_width(*device, _value);
 
+#define MCFG_I8275_DISPLAY_CALLBACK(_func) \
+	i8275x_device::static_set_display_callback(*device, _func);
 
 #define MCFG_I8275_DRQ_CALLBACK(_write) \
 	devcb = &i8275x_device::set_drq_wr_callback(*device, DEVCB2_##_write);
@@ -88,8 +88,8 @@ public:
 	// construction/destruction
 	i8275x_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
 
-	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; }
+	static void static_set_character_width(device_t &device, int value) { downcast<i8275x_device &>(device).m_hpixels_per_column = value; }
+	static void static_set_display_callback(device_t &device, i8275_display_pixels_func func) { downcast<i8275x_device &>(device).m_display_cb = 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); }
@@ -178,7 +178,7 @@ protected:
 	devcb2_write_line   m_write_hrtc;
 	devcb2_write_line   m_write_vrtc;
 
-	i8275_display_pixels_func m_display_pixels;
+	i8275_display_pixels_func m_display_cb;
 	int m_hpixels_per_column;
 
 	bitmap_rgb32 m_bitmap;
diff --git a/src/mess/drivers/wicat.c b/src/mess/drivers/wicat.c
index ab2d84d3b58..6c27560d43c 100644
--- a/src/mess/drivers/wicat.c
+++ b/src/mess/drivers/wicat.c
@@ -887,7 +887,9 @@ 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)
+	MCFG_DEVICE_ADD("video", I8275x, XTAL_19_6608MHz/8)
+	MCFG_I8275_CHARACTER_WIDTH(9)
+	MCFG_I8275_DISPLAY_CALLBACK(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 b0ecf6e0d7c..0c899256a48 100644
--- a/src/mess/drivers/zorba.c
+++ b/src/mess/drivers/zorba.c
@@ -394,7 +394,9 @@ 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)
+	MCFG_DEVICE_ADD("crtc", I8275x, XTAL_14_31818MHz/7)
+	MCFG_I8275_CHARACTER_WIDTH(8)
+	MCFG_I8275_DISPLAY_CALLBACK(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)
diff --git a/src/mess/video/mikromik.c b/src/mess/video/mikromik.c
index c9950113f87..c757b225945 100644
--- a/src/mess/video/mikromik.c
+++ b/src/mess/video/mikromik.c
@@ -114,8 +114,11 @@ 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)
+	MCFG_DEVICE_ADD(I8275_TAG, I8275x, XTAL_18_720MHz/8)
+	MCFG_I8275_CHARACTER_WIDTH(8)
+	MCFG_I8275_DISPLAY_CALLBACK(crtc_display_pixels)
 	MCFG_I8275_DRQ_CALLBACK(DEVWRITELINE(I8237_TAG, am9517a_device, dreq0_w))
+	MCFG_I8275_VRTC_CALLBACK(DEVWRITELINE(UPD7220_TAG, upd7220_device, ext_sync_w))
 	MCFG_VIDEO_SET_SCREEN(SCREEN_TAG)
 
 	MCFG_DEVICE_ADD(UPD7220_TAG, UPD7220, XTAL_18_720MHz/8)