Added a preliminary boolean flag to MC6845 interface structure: "show border area". If true, it will show the whole video area including border + blanking areas. [Angelo Salese]

Bulk replaced const mc6845_interface -> MC6845_INTERFACE, nw

(MESS)
SMC-777: enabled to show the border area in MC6845 interface, changed various video related function accordingly [Angelo Salese]

src/emu/video/mc6845.c

@@ -26,6 +26,9 @@
 
     TODO:
 
+    - Change device video emulation x/y offsets when "show border color"
+      is true
+
     - mos8563
 
         - horizontal scroll
@@ -95,6 +98,7 @@ void mc6845_device::device_config_complete()
 	else
 	{
 		m_screen_tag = NULL;
+		m_show_border_area = false;
 		m_hpixels_per_column = 0;
 		m_begin_update = NULL;
 		m_update_row = NULL;
@@ -506,7 +510,10 @@ void mc6845_device::recompute_parameters(bool postload)
 
 			attoseconds_t refresh = HZ_TO_ATTOSECONDS(m_clock) * (m_horiz_char_total + 1) * vert_pix_total;
 
-			visarea.set(0, max_visible_x, 0, max_visible_y);
+			if(m_show_border_area)
+				visarea.set(0, horiz_pix_total+1, 0, vert_pix_total+1);
+			else
+				visarea.set(0, max_visible_x, 0, max_visible_y);
 
 			if (LOG) logerror("M6845 config screen: HTOTAL: 0x%x  VTOTAL: 0x%x  MAX_X: 0x%x  MAX_Y: 0x%x  HSYNC: 0x%x-0x%x  VSYNC: 0x%x-0x%x  Freq: %ffps\n",
 								horiz_pix_total, vert_pix_total, max_visible_x, max_visible_y, hsync_on_pos, hsync_off_pos - 1, vsync_on_pos, vsync_off_pos - 1, 1 / ATTOSECONDS_TO_DOUBLE(refresh));
@@ -1041,6 +1048,7 @@ void mc6845_device::device_start()
 	m_line_address = 0;
 	m_current_disp_addr = 0;
 
+	save_item(NAME(m_show_border_area));
 	save_item(NAME(m_hpixels_per_column));
 	save_item(NAME(m_register_address_latch));
 	save_item(NAME(m_horiz_char_total));

src/emu/video/mc6845.h

@@ -70,6 +70,7 @@ typedef void (*mc6845_on_update_addr_changed_func)(mc6845_device *device, int ad
 struct mc6845_interface
 {
 	const char *m_screen_tag;       /* screen we are acting on */
+	bool m_show_border_area;		/* visible screen area (false) active display (true) active display + blanking */
 	int m_hpixels_per_column;       /* number of pixels per video memory address */
 
 	/* if specified, this gets called before any pixel update,

src/emu/video/pc_cga.c

@@ -180,17 +180,18 @@ static VIDEO_START( cga_poisk2 );
 static SCREEN_UPDATE_RGB32( cga_poisk2 );
 static VIDEO_START( cga_mc1502 );
 
-static const mc6845_interface mc6845_cga_intf =
+static MC6845_INTERFACE( mc6845_cga_intf )
 {
-	CGA_SCREEN_NAME,    /* screen number */
+	CGA_SCREEN_NAME,				/* screen number */
-	8,                  /* numbers of pixels per video memory address */
+	false,							/* show border area */
-	NULL,               /* begin_update */
+	8,								/* numbers of pixels per video memory address */
-	cga_update_row,     /* update_row */
+	NULL,							/* begin_update */
-	NULL,               /* end_update */
+	cga_update_row,					/* update_row */
-	DEVCB_NULL,             /* on_de_changed */
+	NULL,               			/* end_update */
-	DEVCB_NULL,             /* on_cur_changed */
+	DEVCB_NULL,             		/* on_de_changed */
-	DEVCB_LINE(cga_hsync_changed),  /* on_hsync_changed */
+	DEVCB_NULL,             		/* on_cur_changed */
-	DEVCB_LINE(cga_vsync_changed),  /* on_vsync_changed */
+	DEVCB_LINE(cga_hsync_changed),	/* on_hsync_changed */
+	DEVCB_LINE(cga_vsync_changed),	/* on_vsync_changed */
 	NULL
 };
 

src/mame/drivers/4roses.c

@@ -362,9 +362,10 @@ static const ay8910_interface ay8910_intf =
 *    CRTC Interface    *
 ************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/5clown.c

@@ -988,9 +988,10 @@ GFXDECODE_END
 *    CRTC Interface    *
 ***********************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/albazg.c

@@ -207,9 +207,10 @@ static const ay8910_interface ay8910_config =
 	DEVCB_NULL
 };
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/amaticmg.c

@@ -799,9 +799,10 @@ static const ym3812_interface ym3812_config =
 *          CRTC Interface           *
 ************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	4,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/aristmk4.c

@@ -1545,13 +1545,14 @@ static const pia6821_interface aristmk4_pia1_intf =
 	DEVCB_NULL  // IRQB
 };
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	/* in fact is a mc6845 driving 4 pixels by memory address.
 	that's why the big horizontal parameters */
 
 	"screen",   /* screen we are acting on */
-	4,      /* number of pixels per video memory address */
+	false,		/* show border area */
+	4,			/* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */
 	NULL,       /* after pixel update callback */

src/mame/drivers/avt.c

@@ -847,9 +847,10 @@ GFXDECODE_END
 *              CRTC Interface              *
 *******************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/blitz.c

@@ -738,9 +738,10 @@ static const pia6821_interface megadpkr_pia1_intf =
 *               CRTC Interface              *
 ********************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/blitz68k.c

@@ -1662,9 +1662,11 @@ WRITE_LINE_MEMBER(blitz68k_state::crtc_vsync_irq5)
 	machine().device("maincpu")->execute().set_input_line(5, state ? ASSERT_LINE : CLEAR_LINE);
 }
 
-const mc6845_interface mc6845_intf_irq1 =
+
+static MC6845_INTERFACE( mc6845_intf_irq1 )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	4,          /* number of pixels per video memory address */ /* Horizontal Display programmed to 160 characters */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */
@@ -1676,9 +1678,10 @@ const mc6845_interface mc6845_intf_irq1 =
 	crtc_addr               /* update address callback */
 };
 
-const mc6845_interface mc6845_intf_irq3 =
+static MC6845_INTERFACE( mc6845_intf_irq3 )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	4,          /* number of pixels per video memory address */ /* Horizontal Display programmed to 160 characters */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */
@@ -1690,9 +1693,10 @@ const mc6845_interface mc6845_intf_irq3 =
 	crtc_addr               /* update address callback */
 };
 
-const mc6845_interface mc6845_intf_irq5 =
+static MC6845_INTERFACE( mc6845_intf_irq5 )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	4,          /* number of pixels per video memory address */ /* Horizontal Display programmed to 160 characters */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/buster.c

@@ -306,9 +306,10 @@ static GFXDECODE_START( buster )
 	GFXDECODE_ENTRY( "gfx1", 0, tiles8x8_layout, 0, 1 )
 GFXDECODE_END
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/calomega.c

@@ -2714,9 +2714,10 @@ static const ay8910_interface sys906_ay8912_intf =
 *                CRTC Interface                  *
 *************************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/carrera.c

@@ -309,9 +309,10 @@ void carrera_state::palette_init()
 }
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/chance32.c

@@ -446,9 +446,10 @@ void chance32_state::machine_reset()
 }
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	16,         /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/coinmstr.c

@@ -992,9 +992,10 @@ static const ay8910_interface ay8912_interface =
 	DEVCB_NULL
 };
 
-static const mc6845_interface h46505_intf =
+static MC6845_INTERFACE( h46505_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/flipjack.c

@@ -430,6 +430,7 @@ static AY8910_INTERFACE( ay8910_config_2 )
 static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/fortecar.c

@@ -535,9 +535,10 @@ static const ay8910_interface ay8910_config =
 };
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/funworld.c

@@ -2457,9 +2457,10 @@ static const ay8910_interface funquiz_ay8910_intf =
 *    CRTC Interface    *
 ************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	4,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/goldnpkr.c

@@ -3399,9 +3399,10 @@ static const pia6821_interface wcfalcon_pia1_intf =
 *              CRTC Interface              *
 *******************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/hitpoker.c

@@ -455,9 +455,10 @@ static GFXDECODE_START( hitpoker )
 	GFXDECODE_ENTRY( "gfx1", 0, hitpoker_layout_8bpp,   0, 8  )
 GFXDECODE_END
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/jokrwild.c

@@ -456,9 +456,10 @@ static const pia6821_interface pia1_intf =
 *    CRTC Interface    *
 ************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/jubilee.c

@@ -392,9 +392,10 @@ GFXDECODE_END
 *    CRTC Interface    *
 ************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/kingdrby.c

@@ -912,9 +912,10 @@ GFXDECODE_END
 *
 ***********************************************************************************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/laserbas.c

@@ -236,9 +236,10 @@ void laserbas_state::machine_reset()
 	m_count = 0;
 }
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/luckgrln.c

@@ -973,9 +973,10 @@ static GFXDECODE_START( luckgrln )
 	GFXDECODE_ENTRY( "reels", 0, tiles8x32_layout, 0, 64 )
 GFXDECODE_END
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/magicfly.c

@@ -780,9 +780,10 @@ GFXDECODE_END
 *    CRTC Interface    *
 ************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/majorpkr.c

@@ -999,9 +999,10 @@ GFXDECODE_END
 *    CRTC Interface    *
 ***********************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",       /* screen we are acting on */
+	false,			/* show border area */
 	16,             /* number of pixels per video memory address */
 	NULL,           /* before pixel update callback */
 	NULL,           /* row update callback */

src/mame/drivers/merit.c

@@ -313,9 +313,10 @@ WRITE_LINE_MEMBER(merit_state::vsync_changed)
 	machine().device("maincpu")->execute().set_input_line(0, state ? ASSERT_LINE : CLEAR_LINE);
 }
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",                   /* screen we are acting on */
+	false,						/* show border area */
 	8,                          /* number of pixels per video memory address */
 	begin_update,               /* before pixel update callback */
 	update_row,                 /* row update callback */

src/mame/drivers/miniboy7.c

@@ -391,9 +391,10 @@ GFXDECODE_END
 *         CRTC Interface          *
 **********************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/mpu12wbk.c

@@ -491,9 +491,10 @@ static const ay8910_interface ay8910_config =
 *    CRTC Interface    *
 ************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	4,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/mpu4dealem.c

@@ -144,9 +144,10 @@ WRITE_LINE_MEMBER(mpu4dealem_state::dealem_vsync_changed)
  *
  *************************************/
 
-static const mc6845_interface hd6845_intf =
+static MC6845_INTERFACE( hd6845_intf )
 {
 	"screen",                           /* screen we are acting on */
+	false,								/* show border area */
 	8,                                  /* number of pixels per video memory address */
 	NULL,                               /* before pixel update callback */
 	NULL,                               /* row update callback */

src/mame/drivers/murogem.c

@@ -228,9 +228,10 @@ UINT32 murogem_state::screen_update_murogem(screen_device &screen, bitmap_ind16
 	return 0;
 }
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/nyny.c

@@ -422,9 +422,10 @@ WRITE_LINE_MEMBER(nyny_state::display_enable_changed)
 }
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",               /* screen we are acting on */
+	false,					/* show border area */
 	8,                      /* number of pixels per video memory address */
 	begin_update,           /* before pixel update callback */
 	update_row,             /* row update callback */

src/mame/drivers/othello.c

@@ -364,9 +364,10 @@ static INPUT_PORTS_START( othello )
 
 INPUT_PORTS_END
 
-static const mc6845_interface h46505_intf =
+static MC6845_INTERFACE( h46505_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	TILE_WIDTH, /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	update_row, /* row update callback */

src/mame/drivers/peplus.c

@@ -291,9 +291,10 @@ static const i2cmem_interface i2cmem_interface =
 
 static MC6845_ON_UPDATE_ADDR_CHANGED(crtc_addr);
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",               /* screen we are acting on */
+	false,					/* show border area */
 	8,                      /* number of pixels per video memory address */
 	NULL,                   /* before pixel update callback */
 	NULL,                   /* row update callback */

src/mame/drivers/progolf.c

@@ -86,7 +86,6 @@ public:
 	virtual void video_start();
 	virtual void palette_init();
 	UINT32 screen_update_progolf(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
-	INTERRUPT_GEN_MEMBER(progolf_interrupt);
 };
 
 
@@ -369,15 +368,10 @@ static GFXDECODE_START( progolf )
 GFXDECODE_END
 
 
-//#ifdef UNUSED_FUNCTION
+static MC6845_INTERFACE( mc6845_intf )
-INTERRUPT_GEN_MEMBER(progolf_state::progolf_interrupt)
-{
-}
-//#endif
-
-static const mc6845_interface mc6845_intf =
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */
@@ -423,7 +417,6 @@ static MACHINE_CONFIG_START( progolf, progolf_state )
 	/* basic machine hardware */
 	MCFG_CPU_ADD("maincpu", DECO_222, 3000000/2) /* guess, 3 Mhz makes the game to behave worse? */
 	MCFG_CPU_PROGRAM_MAP(main_cpu)
-	MCFG_CPU_VBLANK_INT_DRIVER("screen", progolf_state,  progolf_interrupt)
 
 	MCFG_CPU_ADD("audiocpu", M6502, 500000)
 	MCFG_CPU_PROGRAM_MAP(sound_cpu)
@@ -457,7 +450,6 @@ static MACHINE_CONFIG_DERIVED( progolfa, progolf )
 	MCFG_DEVICE_REMOVE("maincpu") /* different encrypted cpu to progolf */
 	MCFG_CPU_ADD("maincpu", DECO_CPU6, 3000000/2) /* guess, 3 Mhz makes the game to behave worse? */
 	MCFG_CPU_PROGRAM_MAP(main_cpu)
-	MCFG_CPU_VBLANK_INT_DRIVER("screen", progolf_state,  progolf_interrupt)
 MACHINE_CONFIG_END
 
 

src/mame/drivers/r2dtank.c

@@ -392,9 +392,10 @@ WRITE_LINE_MEMBER(r2dtank_state::display_enable_changed)
 }
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",               /* screen we are acting on */
+	false,					/* show border area */
 	8,                      /* number of pixels per video memory address */
 	begin_update,           /* before pixel update callback */
 	update_row,             /* row update callback */

src/mame/drivers/rgum.c

@@ -228,9 +228,10 @@ static GFXDECODE_START( rgum )
 GFXDECODE_END
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/slotcarn.c

@@ -166,9 +166,10 @@ WRITE_LINE_MEMBER(slotcarn_state::vsync_changed)
 	machine().device("maincpu")->execute().set_input_line(0, state ? ASSERT_LINE : CLEAR_LINE);
 }
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",                   /* screen we are acting on */
+	false,						/* show border area */
 	8,                          /* number of pixels per video memory address */
 	begin_update,               /* before pixel update callback */
 	update_row,                 /* row update callback */

src/mame/drivers/snk6502.c

@@ -755,9 +755,10 @@ INTERRUPT_GEN_MEMBER(snk6502_state::snk6502_interrupt)
  *
  *************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/speedatk.c

@@ -283,9 +283,10 @@ static GFXDECODE_START( speedatk )
 	GFXDECODE_ENTRY( "gfx2", 0, charlayout_3bpp,   0, 32 )
 GFXDECODE_END
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/spiders.c

@@ -505,9 +505,10 @@ WRITE_LINE_MEMBER(spiders_state::display_enable_changed)
 }
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",               /* screen we are acting on */
+	false,					/* show border area */
 	8,                      /* number of pixels per video memory address */
 	begin_update,           /* before pixel update callback */
 	update_row,             /* row update callback */

src/mame/drivers/ssingles.c

@@ -265,9 +265,11 @@ static MC6845_UPDATE_ROW( atamanot_update_row )
 	}
 }
 
-static const mc6845_interface ssingles_mc6845_intf =
+
+static MC6845_INTERFACE( ssingles_mc6845_intf )
 {
 	"screen",
+	false,
 	8,
 	NULL,                       /* before pixel update callback */
 	ssingles_update_row,        /* row update callback */
@@ -279,9 +281,10 @@ static const mc6845_interface ssingles_mc6845_intf =
 	NULL                        /* update address callback */
 };
 
-static const mc6845_interface atamanot_mc6845_intf =
+static MC6845_INTERFACE( atamanot_mc6845_intf )
 {
 	"screen",
+	false,
 	8,
 	NULL,                       /* before pixel update callback */
 	atamanot_update_row,        /* row update callback */

src/mame/drivers/supercrd.c

@@ -399,9 +399,10 @@ GFXDECODE_END
 *    CRTC Interface    *
 ************************/
 
-//static const mc6845_interface mc6845_intf =
+//static MC6845_INTERFACE( mc6845_intf )
 //{
 //  "screen",   /* screen we are acting on */
+//	false,
 //  4,          /* number of pixels per video memory address */
 //  NULL,       /* before pixel update callback */
 //  NULL,       /* row update callback */

src/mame/drivers/tapatune.c

@@ -359,9 +359,10 @@ WRITE_LINE_MEMBER(tapatune_state::crtc_vsync)
 	machine().device("maincpu")->execute().set_input_line(2, state ? ASSERT_LINE : CLEAR_LINE);
 }
 
-static const mc6845_interface h46505_intf =
+static MC6845_INTERFACE( h46505_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	5,          /* number of pixels per video memory address */
 	begin_update,/* before pixel update callback */
 	update_row, /* row update callback */

src/mame/drivers/tmspoker.c

@@ -544,9 +544,10 @@ GFXDECODE_END
 *    CRTC Interface    *
 ************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/truco.c

@@ -432,9 +432,10 @@ static const pia6821_interface pia0_intf =
 *              CRTC Interface              *
 *******************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	4,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/usgames.c

@@ -214,9 +214,10 @@ static GFXDECODE_START( usgames )
 GFXDECODE_END
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/drivers/vcombat.c

@@ -564,9 +564,10 @@ WRITE_LINE_MEMBER(vcombat_state::sound_update)
 	machine().device("soundcpu")->execute().set_input_line(M68K_IRQ_1, state ? ASSERT_LINE : CLEAR_LINE);
 }
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",                   /* screen we are acting on */
+	false,						/* show border area */
 	16,                         /* number of pixels per video memory address */
 	NULL,                       /* before pixel update callback */
 	NULL,                       /* row update callback */

src/mame/drivers/vlc.c

@@ -215,10 +215,11 @@ static const UINT8 pal35[256] = {
 /********************   VIDEO SECTION   ************************************/
 /***************************************************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
-	"screen",       /* screen we are acting on */
+	"screen",	/* screen we are acting on */
-	8,      /* number of pixels per video memory address */
+	false,		/* show border area */
+	8,			/* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */
 	NULL,       /* after pixel update callback */

src/mame/drivers/whitestar.c

@@ -244,9 +244,10 @@ MC6845_UPDATE_ROW( whitestar_update_row )
 	}
 }
 
-static const mc6845_interface whitestar_crtc6845_interface =
+static MC6845_INTERFACE( whitestar_crtc6845_interface )
 {
 	NULL,
+	false,		/* show border area */
 	1,
 	NULL,
 	whitestar_update_row,

src/mame/video/madalien.c

@@ -377,9 +377,10 @@ static GFXDECODE_START( madalien )
 GFXDECODE_END
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mame/video/qix.c

@@ -382,9 +382,10 @@ ADDRESS_MAP_END
  *
  *************************************/
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",                           /* screen we are acting on */
+	false,								/* show border area */
 	8,                                  /* number of pixels per video memory address */
 	begin_update,                       /* before pixel update callback */
 	update_row,                         /* row update callback */

src/mame/video/twincobr.c

@@ -20,9 +20,10 @@
 static void twincobr_restore_screen(running_machine &machine);
 
 /* 6845 used for video sync signals only */
-const mc6845_interface twincobr_mc6845_intf =
+MC6845_INTERFACE( twincobr_mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	2,          /* number of pixels per video memory address */ /* Horizontal Display programmed to 160 characters */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/a6809.c

@@ -66,9 +66,11 @@ static MC6845_UPDATE_ROW( a6809_update_row )
 {
 }
 
-static const mc6845_interface a6809_crtc6845_interface =
+
+static MC6845_INTERFACE( a6809_crtc6845_interface )
 {
 	"screen",
+	false,
 	12 /*?*/,
 	NULL,
 	a6809_update_row,

src/mess/drivers/alphatro.c

@@ -379,9 +379,11 @@ void alphatro_state::palette_init()
 	palette_set_color_rgb(machine(), 8, 0xf7, 0xaa, 0x00);
 }
 
-static const mc6845_interface alphatro_crtc6845_interface =
+
+static MC6845_INTERFACE( alphatro_crtc6845_interface )
 {
 	"screen",
+	false,
 	8,
 	NULL,
 	alphatro_update_row,

src/mess/drivers/applix.c

@@ -189,8 +189,10 @@ MC6845_UPDATE_ROW( applix_update_row )
 #endif
 }
 
-static const mc6845_interface applix_crtc = {
+static MC6845_INTERFACE( applix_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	8,          /* number of dots per character */
 	NULL,
 	applix_update_row,      /* handler to display a scanline */

src/mess/drivers/apricot.c

@@ -235,9 +235,11 @@ WRITE_LINE_MEMBER( apricot_state::apricot_mc6845_de )
 	m_display_enabled = state;
 }
 
-static const mc6845_interface apricot_mc6845_intf =
+
+static MC6845_INTERFACE( apricot_mc6845_intf )
 {
 	"screen",
+	false,
 	10,
 	NULL,
 	apricot_update_row,

src/mess/drivers/apricotp.c

@@ -56,9 +56,11 @@ static MC6845_UPDATE_ROW( fp_update_row )
 {
 }
 
-static const mc6845_interface crtc_intf =
+
+static MC6845_INTERFACE( crtc_intf )
 {
 	SCREEN_CRT_TAG,
+	false,
 	8,
 	NULL,
 	fp_update_row,

src/mess/drivers/b16.c

@@ -247,9 +247,10 @@ void b16_state::machine_reset()
 
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/bigbord2.c

@@ -662,8 +662,10 @@ MC6845_UPDATE_ROW( bigbord2_update_row )
 	}
 }
 
-static const mc6845_interface bigbord2_crtc = {
+static MC6845_INTERFACE( bigbord2_crtc )
+{
 	SCREEN_TAG,         /* name of screen */
+	false,
 	8,          /* number of dots per character */
 	NULL,
 	bigbord2_update_row,        /* handler to display a scanline */

src/mess/drivers/bml3.c

@@ -564,9 +564,11 @@ static INPUT_PORTS_START( bml3 )
 	PORT_BIT(0xffe00000,IP_ACTIVE_HIGH,IPT_UNKNOWN)
 INPUT_PORTS_END
 
-static const mc6845_interface mc6845_intf =
+
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/bw12.c

@@ -355,9 +355,11 @@ static MC6845_UPDATE_ROW( bw12_update_row )
 	}
 }
 
-static const mc6845_interface bw12_mc6845_interface =
+
+static MC6845_INTERFACE( bw12_mc6845_interface )
 {
 	SCREEN_TAG,
+	false,
 	8,
 	NULL,
 	bw12_update_row,

src/mess/drivers/c128.c

@@ -788,9 +788,11 @@ static GFXDECODE_START( c128 )
 	GFXDECODE_ENTRY( "charom", 0x0000, gfx_8x8x1, 0, 1 )
 GFXDECODE_END
 
-static const mc6845_interface vdc_intf =
+
+static MC6845_INTERFACE( vdc_intf )
 {
 	SCREEN_VDC_TAG,
+	false,
 	8,
 	NULL,
 	NULL,

src/mess/drivers/camplynx.c

@@ -432,8 +432,10 @@ void camplynx_state::video_start()
 {
 }
 
-static const mc6845_interface lynx48k_crtc6845_interface = {
+static MC6845_INTERFACE( lynx48k_crtc6845_interface )
+{
 	"screen",
+	false,
 	8,
 	NULL,
 	lynx48k_update_row,
@@ -445,8 +447,11 @@ static const mc6845_interface lynx48k_crtc6845_interface = {
 	NULL
 };
 
-static const mc6845_interface lynx128k_crtc6845_interface = {
+
+static MC6845_INTERFACE( lynx128k_crtc6845_interface )
+{
 	"screen",           /* screen name */
+	false,
 	8,              /* dots per character */
 	NULL,
 	lynx128k_update_row,        /* callback to display one scanline */

src/mess/drivers/cbm2.c

@@ -1103,9 +1103,10 @@ static MC6845_UPDATE_ROW( crtc_update_row )
 	}
 }
 
-static const mc6845_interface crtc_intf =
+static MC6845_INTERFACE( crtc_intf )
 {
 	SCREEN_TAG,
+	false,
 	9,
 	NULL,
 	crtc_update_row,

src/mess/drivers/dim68k.c

@@ -283,8 +283,10 @@ static GFXDECODE_START( dim68k )
 	GFXDECODE_ENTRY( "chargen", 0x0000, dim68k_charlayout, 0, 1 )
 GFXDECODE_END
 
-static const mc6845_interface dim68k_crtc = {
+static MC6845_INTERFACE( dim68k_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	8,          /* number of dots per character - switchable 7 or 8 */
 	NULL,
 	dim68k_update_row,      /* handler to display a scanline */

src/mess/drivers/ec65.c

@@ -211,9 +211,11 @@ static MC6845_UPDATE_ROW( ec65_update_row )
 	}
 }
 
-static const mc6845_interface ec65_crtc6845_interface =
+
+static MC6845_INTERFACE( ec65_crtc6845_interface )
 {
 	"screen",
+	false,
 	8 /*?*/,
 	NULL,
 	ec65_update_row,

src/mess/drivers/einstein.c

@@ -713,9 +713,10 @@ static const centronics_interface einstein_centronics_config =
 	DEVCB_NULL
 };
 
-static const mc6845_interface einstein_crtc6845_interface =
+static MC6845_INTERFACE( einstein_crtc6845_interface )
 {
 	"80column",
+	false,
 	8,
 	NULL,
 	einstein_6845_update_row,

src/mess/drivers/fp1100.c

@@ -381,9 +381,11 @@ GFXDECODE_END
 static const UPD7810_CONFIG fp1100_slave_cpu_config = { TYPE_7801, NULL };
 //static const upd1771_interface scv_upd1771c_config = { DEVCB_LINE( scv_upd1771_ack_w ) };
 
-static const mc6845_interface mc6845_intf =
+
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	fp1100_update_row,      /* row update callback */

src/mess/drivers/fp6000.c

@@ -280,9 +280,10 @@ void fp6000_state::machine_reset()
 {
 }
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/h19.c

@@ -350,9 +350,11 @@ static const ins8250_interface h19_ace_interface =
 	DEVCB_NULL
 };
 
-static const mc6845_interface h19_crtc6845_interface =
+
+static MC6845_INTERFACE( h19_crtc6845_interface )
 {
 	"screen",
+	false,
 	8 /*?*/,
 	NULL,
 	h19_update_row,

src/mess/drivers/hp9k.c

@@ -385,8 +385,11 @@ WRITE8_MEMBER( hp9k_state::kbd_put )
 	kbdBit=data;
 }
 
-static const mc6845_interface hp9k_mc6845_intf = {
+
+static MC6845_INTERFACE( hp9k_mc6845_intf )
+{
 	"screen",           /* name of screen */
+	false,
 	8,          /* number of dots per character */
 	NULL,
 	NULL,       /* handler to display a scanline */

src/mess/drivers/kaypro.c

@@ -147,8 +147,12 @@ static const z80_daisy_config kaypro2x_daisy_chain[] =
 	{ NULL }
 };
 
-static const mc6845_interface kaypro2x_crtc = {
+
+
+static MC6845_INTERFACE( kaypro2x_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	7,              /* number of dots per character */
 	NULL,
 	kaypro2x_update_row,        /* handler to display a scanline */

src/mess/drivers/m20.c

@@ -831,9 +831,11 @@ void m20_state::machine_reset()
 	m_maincpu->reset();     // reset the CPU to ensure it picks up the new vector
 }
 
-static const mc6845_interface mc6845_intf =
+
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	16,         /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/mbc200.c

@@ -134,8 +134,11 @@ MC6845_UPDATE_ROW( mbc200_update_row )
 {
 }
 
-static const mc6845_interface mbc200_crtc = {
+
+static MC6845_INTERFACE( mbc200_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	8,          /* number of dots per character */
 	NULL,
 	mbc200_update_row,      /* handler to display a scanline */

src/mess/drivers/mbee.c

@@ -614,8 +614,11 @@ static const floppy_interface mbee_floppy_interface =
 	NULL
 };
 
-static const mc6845_interface mbee_crtc = {
+
+static MC6845_INTERFACE( mbee_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	8,          /* number of dots per character */
 	NULL,
 	mbee_update_row,        /* handler to display a scanline */
@@ -627,8 +630,11 @@ static const mc6845_interface mbee_crtc = {
 	mbee_update_addr        /* handler to process transparent mode */
 };
 
-static const mc6845_interface mbeeic_crtc = {
+
+static MC6845_INTERFACE( mbeeic_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	8,          /* number of dots per character */
 	NULL,
 	mbeeic_update_row,      /* handler to display a scanline */
@@ -640,8 +646,10 @@ static const mc6845_interface mbeeic_crtc = {
 	mbee_update_addr        /* handler to process transparent mode */
 };
 
-static const mc6845_interface mbeeppc_crtc = {
+static MC6845_INTERFACE( mbeeppc_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	8,          /* number of dots per character */
 	NULL,
 	mbeeppc_update_row,     /* handler to display a scanline */
@@ -653,8 +661,10 @@ static const mc6845_interface mbeeppc_crtc = {
 	mbee_update_addr        /* handler to process transparent mode */
 };
 
-static const mc6845_interface mbee256_crtc = {
+static MC6845_INTERFACE( mbee256_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	8,          /* number of dots per character */
 	NULL,
 	mbeeppc_update_row,     /* handler to display a scanline */

src/mess/drivers/multi16.c

@@ -144,9 +144,11 @@ void multi16_state::machine_reset()
 {
 }
 
-static const mc6845_interface mc6845_intf =
+
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/multi8.c

@@ -556,9 +556,11 @@ static GFXDECODE_START( multi8 )
 	GFXDECODE_ENTRY( "kanji",   0x0000, multi8_kanjilayout, 0, 1 )
 GFXDECODE_END
 
-static const mc6845_interface mc6845_intf =
+
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/myb3k.c

@@ -230,9 +230,10 @@ static GFXDECODE_START( myb3k )
 	GFXDECODE_ENTRY( "ipl", 0x0000, myb3k_charlayout, 0, 1 )
 GFXDECODE_END
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/mycom.c

@@ -331,18 +331,19 @@ static GFXDECODE_START( mycom )
 	GFXDECODE_ENTRY( "chargen", 0x0000, mycom_charlayout, 0, 1 )
 GFXDECODE_END
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
-	"screen",   /* screen we are acting on */
+	"screen",   		/* screen we are acting on */
-	8,      /* number of pixels per video memory address */
+	false,				/* show border area */
-	NULL,       /* before pixel update callback */
+	8,      			/* number of pixels per video memory address */
-	mycom_update_row,       /* row update callback */
+	NULL,      			/* before pixel update callback */
-	NULL,       /* after pixel update callback */
+	mycom_update_row,	/* row update callback */
-	DEVCB_NULL, /* callback for display state changes */
+	NULL,       		/* after pixel update callback */
-	DEVCB_NULL, /* callback for cursor state changes */
+	DEVCB_NULL, 		/* callback for display state changes */
-	DEVCB_NULL, /* HSYNC callback */
+	DEVCB_NULL, 		/* callback for cursor state changes */
-	DEVCB_NULL, /* VSYNC callback */
+	DEVCB_NULL, 		/* HSYNC callback */
-	NULL        /* update address callback */
+	DEVCB_NULL, 		/* VSYNC callback */
+	NULL        		/* update address callback */
 };
 
 WRITE8_MEMBER( mycom_state::mycom_04_w )

src/mess/drivers/paso1600.c

@@ -259,9 +259,10 @@ static GFXDECODE_START( paso1600 )
 GFXDECODE_END
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/pasopia.c

@@ -301,18 +301,19 @@ static Z80PIO_INTERFACE( z80pio_intf )
 	DEVCB_NULL
 };
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
-	"screen",   /* screen we are acting on */
+	"screen",   			/* screen we are acting on */
-	8,      /* number of pixels per video memory address */
+	false,					/* show border area */
-	NULL,       /* before pixel update callback */
+	8,		    			/* number of pixels per video memory address */
+	NULL,       			/* before pixel update callback */
 	pasopia_update_row,     /* row update callback */
-	NULL,       /* after pixel update callback */
+	NULL,       			/* after pixel update callback */
-	DEVCB_NULL, /* callback for display state changes */
+	DEVCB_NULL, 			/* callback for display state changes */
-	DEVCB_NULL, /* callback for cursor state changes */
+	DEVCB_NULL, 			/* callback for cursor state changes */
-	DEVCB_NULL, /* HSYNC callback */
+	DEVCB_NULL, 			/* HSYNC callback */
-	DEVCB_NULL, /* VSYNC callback */
+	DEVCB_NULL, 			/* VSYNC callback */
-	NULL        /* update address callback */
+	NULL        			/* update address callback */
 };
 
 static const gfx_layout p7_chars_8x8 =

src/mess/drivers/pasopia7.c

@@ -723,9 +723,10 @@ static GFXDECODE_START( pasopia7 )
 	GFXDECODE_ENTRY( "kanji",  0x00000, p7_chars_16x16,  0, 0x10 )
 GFXDECODE_END
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/pet.c

@@ -597,8 +597,11 @@ static GFXDECODE_START( superpet )
 	GFXDECODE_ENTRY( "gfx1", 0x3000, pet80_charlayout, 0, 1 )
 GFXDECODE_END
 
-static const mc6845_interface crtc_pet40 = {
+
+static MC6845_INTERFACE( crtc_pet40 )
+{
 	"screen",
+	false,
 	8,
 	NULL,
 	pet40_update_row,
@@ -610,8 +613,10 @@ static const mc6845_interface crtc_pet40 = {
 	NULL
 };
 
-static const mc6845_interface crtc_pet80 = {
+static MC6845_INTERFACE( crtc_pet80 )
+{
 	"screen",
+	false,
 	16,
 	NULL,
 	pet80_update_row,

src/mess/drivers/pyl601.c

@@ -463,9 +463,11 @@ static MC6845_UPDATE_ROW( pyl601a_update_row )
 }
 
 
-static const mc6845_interface pyl601_crtc6845_interface =
+
+static MC6845_INTERFACE( pyl601_crtc6845_interface )
 {
 	"screen",
+	false,
 	8 /*?*/,
 	NULL,
 	pyl601_update_row,
@@ -477,9 +479,10 @@ static const mc6845_interface pyl601_crtc6845_interface =
 	NULL
 };
 
-static const mc6845_interface pyl601a_crtc6845_interface =
+static MC6845_INTERFACE( pyl601a_crtc6845_interface )
 {
 	"screen",
+	false,
 	8 /*?*/,
 	NULL,
 	pyl601a_update_row,

src/mess/drivers/smc777.c

@@ -27,6 +27,23 @@
 #include "formats/basicdsk.h"
 #include "imagedev/flopdrv.h"
 
+#define mc6845_h_char_total     (m_crtc_vreg[0]+1)
+#define mc6845_h_display        (m_crtc_vreg[1])
+#define mc6845_h_sync_pos       (m_crtc_vreg[2])
+#define mc6845_sync_width       (m_crtc_vreg[3])
+#define mc6845_v_char_total     (m_crtc_vreg[4]+1)
+#define mc6845_v_total_adj      (m_crtc_vreg[5])
+#define mc6845_v_display        (m_crtc_vreg[6])
+#define mc6845_v_sync_pos       (m_crtc_vreg[7])
+#define mc6845_mode_ctrl        (m_crtc_vreg[8])
+#define mc6845_tile_height      (m_crtc_vreg[9]+1)
+#define mc6845_cursor_y_start   (m_crtc_vreg[0x0a])
+#define mc6845_cursor_y_end     (m_crtc_vreg[0x0b])
+#define mc6845_start_addr       (((m_crtc_vreg[0x0c]<<8) & 0x3f00) | (m_crtc_vreg[0x0d] & 0xff))
+#define mc6845_cursor_addr      (((m_crtc_vreg[0x0e]<<8) & 0x3f00) | (m_crtc_vreg[0x0f] & 0xff))
+#define mc6845_light_pen_addr   (((m_crtc_vreg[0x10]<<8) & 0x3f00) | (m_crtc_vreg[0x11] & 0xff))
+#define mc6845_update_addr      (((m_crtc_vreg[0x12]<<8) & 0x3f00) | (m_crtc_vreg[0x13] & 0xff))
+
 class smc777_state : public driver_device
 {
 public:
@@ -50,14 +67,11 @@ public:
 	UINT8 *m_gvram;
 	UINT8 *m_pcg;
 
-	UINT16 m_cursor_addr;
-	UINT16 m_cursor_raster;
 	UINT8 m_keyb_press;
 	UINT8 m_keyb_press_flag;
 	UINT8 m_shift_press_flag;
 	UINT8 m_backdrop_pen;
 	UINT8 m_display_reg;
-	int m_addr_latch;
 	UINT8 m_fdc_irq_flag;
 	UINT8 m_fdc_drq_flag;
 	UINT8 m_system_data;
@@ -68,6 +82,8 @@ public:
 	UINT8 m_keyb_direct;
 	UINT8 m_pal_mode;
 	UINT8 m_keyb_cmd;
+	UINT8 m_crtc_vreg[0x20];
+	UINT8 m_crtc_addr;
 	DECLARE_WRITE8_MEMBER(smc777_6845_w);
 	DECLARE_READ8_MEMBER(smc777_vram_r);
 	DECLARE_READ8_MEMBER(smc777_attr_r);
@@ -107,9 +123,9 @@ public:
 };
 
 
-
+/* TODO: correct numbers, calculable thru mc6845 regs */
-#define CRTC_MIN_X 10
+#define CRTC_MIN_X 24*8
-#define CRTC_MIN_Y 10
+#define CRTC_MIN_Y 4*8
 
 void smc777_state::video_start()
 {
@@ -121,9 +137,11 @@ UINT32 smc777_state::screen_update_smc777(screen_device &screen, bitmap_ind16 &b
 	UINT16 count;
 	int x_width;
 
+//	popmessage("%d %d %d %d",mc6845_v_char_total,mc6845_v_total_adj,mc6845_v_display,mc6845_v_sync_pos);
+
 	bitmap.fill(machine().pens[m_backdrop_pen], cliprect);
 
-	x_width = (m_display_reg & 0x80) ? 2 : 4;
+	x_width = ((m_display_reg & 0x80) >> 7);
 
 	count = 0x0000;
 
@@ -137,26 +155,26 @@ UINT32 smc777_state::screen_update_smc777(screen_device &screen, bitmap_ind16 &b
 
 				color = (m_gvram[count] & 0xf0) >> 4;
 				/* todo: clean this up! */
-				if(x_width == 2)
+				//if(x_width)
-				{
-					bitmap.pix16(y+yi+CRTC_MIN_Y, x*2+0+CRTC_MIN_X) = machine().pens[color];
-				}
-				else
 				{
 					bitmap.pix16(y+yi+CRTC_MIN_Y, x*4+0+CRTC_MIN_X) = machine().pens[color];
 					bitmap.pix16(y+yi+CRTC_MIN_Y, x*4+1+CRTC_MIN_X) = machine().pens[color];
 				}
+				//else
+				//{
+				//	bitmap.pix16(y+yi+CRTC_MIN_Y, x*2+0+CRTC_MIN_X) = machine().pens[color];
+				//}
 
 				color = (m_gvram[count] & 0x0f) >> 0;
-				if(x_width == 2)
+				//if(x_width)
-				{
-					bitmap.pix16(y+yi+CRTC_MIN_Y, x*2+1+CRTC_MIN_X) = machine().pens[color];
-				}
-				else
 				{
 					bitmap.pix16(y+yi+CRTC_MIN_Y, x*4+2+CRTC_MIN_X) = machine().pens[color];
 					bitmap.pix16(y+yi+CRTC_MIN_Y, x*4+3+CRTC_MIN_X) = machine().pens[color];
 				}
+				//else
+				//{
+				//	bitmap.pix16(y+yi+CRTC_MIN_Y, x*2+1+CRTC_MIN_X) = machine().pens[color];
+				//}
 
 				count++;
 
@@ -167,11 +185,9 @@ UINT32 smc777_state::screen_update_smc777(screen_device &screen, bitmap_ind16 &b
 
 	count = 0x0000;
 
-	x_width = (m_display_reg & 0x80) ? 40 : 80;
-
 	for(y=0;y<25;y++)
 	{
-		for(x=0;x<x_width;x++)
+		for(x=0;x<80/(x_width+1);x++)
 		{
 			/*
 			-x-- ---- blink
@@ -207,17 +223,25 @@ UINT32 smc777_state::screen_update_smc777(screen_device &screen, bitmap_ind16 &b
 					pen = ((m_pcg[tile*8+yi]>>(7-xi)) & 1) ? (color+m_pal_mode) : bk_pen;
 
 					if (pen != -1)
-						bitmap.pix16(y*8+CRTC_MIN_Y+yi, x*8+CRTC_MIN_X+xi) = machine().pens[pen];
+					{
+						if(x_width)
+						{
+							bitmap.pix16(y*8+CRTC_MIN_Y+yi, (x*8+xi)*2+0+CRTC_MIN_X) = machine().pens[pen];
+							bitmap.pix16(y*8+CRTC_MIN_Y+yi, (x*8+xi)*2+1+CRTC_MIN_X) = machine().pens[pen];
+						}
+						else
+							bitmap.pix16(y*8+CRTC_MIN_Y+yi, x*8+CRTC_MIN_X+xi) = machine().pens[pen];
+					}
 				}
 			}
 
 			// draw cursor
-			if(m_cursor_addr == count)
+			if(mc6845_cursor_addr == count)
 			{
 				int xc,yc,cursor_on;
 
 				cursor_on = 0;
-				switch(m_cursor_raster & 0x60)
+				switch(mc6845_cursor_y_start & 0x60)
 				{
 					case 0x00: cursor_on = 1; break; //always on
 					case 0x20: cursor_on = 0; break; //always off
@@ -227,11 +251,17 @@ UINT32 smc777_state::screen_update_smc777(screen_device &screen, bitmap_ind16 &b
 
 				if(cursor_on)
 				{
-					for(yc=0;yc<(8-(m_cursor_raster & 7));yc++)
+					for(yc=0;yc<(8-(mc6845_cursor_y_start & 7));yc++)
 					{
 						for(xc=0;xc<8;xc++)
 						{
-							bitmap.pix16(y*8+CRTC_MIN_Y-yc+7, x*8+CRTC_MIN_X+xc) = machine().pens[0x7];
+							if(x_width)
+							{
+								bitmap.pix16(y*8+CRTC_MIN_Y-yc+7, (x*8+xc)*2+0+CRTC_MIN_X) = machine().pens[0x7];
+								bitmap.pix16(y*8+CRTC_MIN_Y-yc+7, (x*8+xc)*2+1+CRTC_MIN_X) = machine().pens[0x7];
+							}
+							else
+								bitmap.pix16(y*8+CRTC_MIN_Y-yc+7, x*8+CRTC_MIN_X+xc) = machine().pens[0x7];
 						}
 					}
 				}
@@ -248,19 +278,13 @@ WRITE8_MEMBER(smc777_state::smc777_6845_w)
 {
 	if(offset == 0)
 	{
-		m_addr_latch = data;
+		m_crtc_addr = data;
-		//mc6845_address_w(m_crtc, 0,data);
+		m_crtc->address_w(space, 0,data);
 	}
 	else
 	{
-		if(m_addr_latch == 0x0a)
+		m_crtc_vreg[m_crtc_addr] = data;
-			m_cursor_raster = data;
+		m_crtc->register_w(space, 0,data);
-		else if(m_addr_latch == 0x0e)
-			m_cursor_addr = ((data<<8) & 0x3f00) | (m_cursor_addr & 0xff);
-		else if(m_addr_latch == 0x0f)
-			m_cursor_addr = (m_cursor_addr & 0x3f00) | (data & 0xff);
-
-		//mc6845_register_w(m_crtc, 0,data);
 	}
 }
 
@@ -553,20 +577,6 @@ WRITE8_MEMBER(smc777_state::display_reg_w)
 	---- -x-- mode select?
 	*/
 
-	{
-		if((m_display_reg & 0x80) != (data & 0x80))
-		{
-			rectangle visarea = machine().primary_screen->visible_area();
-			int x_width;
-
-			x_width = (data & 0x80) ? 320 : 640;
-
-			visarea.set(0, (x_width+(CRTC_MIN_X*2)) - 1, 0, (200+(CRTC_MIN_Y*2)) - 1);
-
-			machine().primary_screen->configure(660, 220, visarea, machine().primary_screen->frame_period().attoseconds);
-		}
-	}
-
 	m_display_reg = data;
 }
 
@@ -984,9 +994,10 @@ void smc777_state::machine_reset()
 }
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	true,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/super80.c

@@ -616,8 +616,10 @@ static const cassette_interface super80_cassette_interface =
 };
 
 
-static const mc6845_interface super80v_crtc = {
+static MC6845_INTERFACE( super80v_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	SUPER80V_DOTS,          /* number of dots per character */
 	NULL,
 	super80v_update_row,        /* handler to display a scanline */

src/mess/drivers/svi318.c

@@ -386,9 +386,11 @@ static MACHINE_CONFIG_DERIVED( svi328n, svi318n )
 	MCFG_RAM_EXTRA_OPTIONS("96K,160K")
 MACHINE_CONFIG_END
 
-static const mc6845_interface svi806_crtc6845_interface =
+
+static MC6845_INTERFACE( svi806_crtc6845_interface )
 {
 	"svi806",
+	false,
 	8 /*?*/,
 	NULL,
 	svi806_crtc6845_update_row,

src/mess/drivers/trs80m2.c

@@ -616,9 +616,10 @@ WRITE_LINE_MEMBER( trs80m2_state::vsync_w )
 	}
 }
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	SCREEN_TAG,
+	false,
 	8,
 	NULL,
 	trs80m2_update_row,

src/mess/drivers/tvc.c

@@ -631,9 +631,11 @@ static QUICKLOAD_LOAD(tvc64)
 	}
 }
 
-static const mc6845_interface tvc_crtc6845_interface =
+
+static MC6845_INTERFACE( tvc_crtc6845_interface )
 {
 	"screen",
+	false,
 	8 /*?*/,
 	NULL,
 	tvc_update_row,

src/mess/drivers/v6809.c

@@ -173,8 +173,11 @@ void v6809_state::video_start()
 	m_p_videoram = memregion("videoram")->base();
 }
 
-static const mc6845_interface v6809_crtc = {
+
+static MC6845_INTERFACE( v6809_crtc )
+{
 	"screen",           /* name of screen */
+	false,
 	8,              /* number of dots per character */
 	NULL,
 	v6809_update_row,       /* handler to display a scanline */

src/mess/drivers/victor9k.c

@@ -107,9 +107,11 @@ static MC6845_UPDATE_ROW( victor9k_update_row )
 	}
 }
 
-static const mc6845_interface hd46505s_intf =
+
+static MC6845_INTERFACE( hd46505s_intf )
 {
 	SCREEN_TAG,
+	false,
 	10,
 	NULL,
 	victor9k_update_row,

src/mess/drivers/vk100.c

@@ -947,9 +947,10 @@ static MC6845_UPDATE_ROW( vk100_update_row )
 }
 
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",
+	false,
 	12,
 	NULL,
 	vk100_update_row,

src/mess/drivers/x1.c

@@ -1897,9 +1897,10 @@ static I8255A_INTERFACE( ppi8255_intf )
 	DEVCB_DRIVER_MEMBER(x1_state, x1_portc_w)                       /* Port C write */
 };
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/x1twin.c

@@ -88,18 +88,19 @@ static I8255A_INTERFACE( ppi8255_intf )
 	DEVCB_DRIVER_MEMBER(x1_state, x1_portc_w)                       /* Port C write */
 };
 
-static const mc6845_interface mc6845_intf =
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"x1_screen",    /* screen we are acting on */
-	8,          /* number of pixels per video memory address */
+	false,			/* show border area*/
-	NULL,       /* before pixel update callback */
+	8,         		/* number of pixels per video memory address */
-	NULL,       /* row update callback */
+	NULL,       	/* before pixel update callback */
-	NULL,       /* after pixel update callback */
+	NULL,       	/* row update callback */
-	DEVCB_NULL, /* callback for display state changes */
+	NULL,       	/* after pixel update callback */
-	DEVCB_NULL, /* callback for cursor state changes */
+	DEVCB_NULL, 	/* callback for display state changes */
-	DEVCB_NULL, /* HSYNC callback */
+	DEVCB_NULL, 	/* callback for cursor state changes */
-	DEVCB_NULL, /* VSYNC callback */
+	DEVCB_NULL, 	/* HSYNC callback */
-	NULL        /* update address callback */
+	DEVCB_NULL, 	/* VSYNC callback */
+	NULL        	/* update address callback */
 };
 
 /*************************************

src/mess/drivers/z100.c

@@ -627,9 +627,11 @@ static const struct pic8259_interface z100_pic8259_slave_config =
 	DEVCB_NULL
 };
 
-static const mc6845_interface mc6845_intf =
+
+static MC6845_INTERFACE( mc6845_intf )
 {
 	"screen",   /* screen we are acting on */
+	false,		/* show border area */
 	8,          /* number of pixels per video memory address */
 	NULL,       /* before pixel update callback */
 	NULL,       /* row update callback */

src/mess/drivers/zrt80.c

@@ -226,9 +226,11 @@ static MC6845_UPDATE_ROW( zrt80_update_row )
 	}
 }
 
-static const mc6845_interface zrt80_crtc6845_interface =
+
+static MC6845_INTERFACE( zrt80_crtc6845_interface )
 {
 	"screen",
+	false,
 	8 /*?*/,
 	NULL,
 	zrt80_update_row,

src/mess/machine/a2videoterm.c

@@ -48,9 +48,10 @@ const device_type A2BUS_VTC2 = &device_creator<a2bus_vtc2_device>;
 
 static MC6845_UPDATE_ROW( videoterm_update_row );
 
-static const mc6845_interface mc6845_mda_intf =
+static MC6845_INTERFACE( mc6845_mda_intf )
 {
 	VIDEOTERM_SCREEN_NAME, /* screen number */
+	false,				/* show border area */
 	8,                  /* number of pixels per video memory address */
 	NULL,               /* begin_update */
 	videoterm_update_row,       /* update_row */