diff --git a/src/mame/drivers/pinkiri8.c b/src/mame/drivers/pinkiri8.c
index febda2753ea..53b43223200 100644
--- a/src/mame/drivers/pinkiri8.c
+++ b/src/mame/drivers/pinkiri8.c
@@ -2,13 +2,16 @@
 
 Pinkiri 8 skeleton driver
 
-- Missing internal ROM, can't do much at the current time
+- current blocker is the video emulation i/o ports, it looks somewhat exotic.
 
 ***************************************************************************/
 
 #include "emu.h"
 #include "cpu/z180/z180.h"
 
+static UINT32 vram_addr;
+static UINT8 vram_bank;
+
 static VIDEO_START( pinkiri8 )
 {
 
@@ -16,11 +19,98 @@ static VIDEO_START( pinkiri8 )
 
 static VIDEO_UPDATE( pinkiri8 )
 {
+	static UINT8 *vram = memory_region(screen->machine, "vram");
+	const gfx_element *gfx = screen->machine->gfx[0];
+
+	bitmap_fill(bitmap, cliprect, get_black_pen(screen->machine));
+
+	{
+		UINT8 x,y;
+		UINT16 spr_offs,i;
+
+		for(i=0x00000;i<0x4000;i+=4)
+		{
+			spr_offs = ((vram[i+0+0x30000] & 0xff) | (vram[i+1+0x30000]<<16)) & 0x0fff;
+			x = vram[i+3+0x30000];
+			y = vram[i+2+0x30000];
+
+			drawgfx_transpen(bitmap,cliprect,gfx,spr_offs,  0,0,0,x+0,y,0);
+			drawgfx_transpen(bitmap,cliprect,gfx,spr_offs+1,0,0,0,x+8,y,0);
+			drawgfx_transpen(bitmap,cliprect,gfx,spr_offs+2,0,0,0,x+16,y,0);
+			drawgfx_transpen(bitmap,cliprect,gfx,spr_offs+3,0,0,0,x+24,y,0);
+
+		}
+	}
+
 	return 0;
 }
 
 static ADDRESS_MAP_START( pinkiri8_map, ADDRESS_SPACE_PROGRAM, 8 )
-	AM_RANGE(0x000000, 0x01ffff) AM_ROM
+	AM_RANGE(0x00000, 0x0bfff) AM_ROM
+	AM_RANGE(0x0c000, 0x0dfff) AM_RAM
+	AM_RANGE(0x10000, 0x1ffff) AM_ROM
+ADDRESS_MAP_END
+
+static READ8_HANDLER( unk_r )
+{
+	return 0xff;//mame_rand(space->machine);
+}
+
+static WRITE8_HANDLER( output_regs_w )
+{
+	if(data & 0x40)
+		cputag_set_input_line(space->machine, "maincpu", INPUT_LINE_NMI, CLEAR_LINE);
+	//data & 0x80 is probably NMI mask
+}
+
+static WRITE8_HANDLER( pinkiri8_vram_w )
+{
+	static UINT8 *vram = memory_region(space->machine, "vram");
+
+	switch(offset)
+	{
+		case 0: vram_addr = (data & 0xff) | (vram_addr & 0xff00); break;
+		case 1: vram_addr = (data << 8) | (vram_addr & 0x00ff); break;
+		case 2:
+			vram_bank = (data ^ 0x07) & 0x07; //unknown purpose
+			//printf("%02x\n",vram_bank);
+			break;
+		case 3:
+			vram_addr++;
+			vram_addr&=0xffff;
+			if(vram_bank < 3)
+				vram[vram_addr] = data;
+			if(vram_addr <= 0x3fff)
+			{
+				static UINT16 datax,pal_offs;
+				static UINT8 r,g,b;
+
+				pal_offs = vram_addr;
+
+				datax = (vram[pal_offs & 0x1fff]) + (vram[(pal_offs & 0x1fff) | (0x2000)]<<8);
+
+				r = ((datax)&0x001f)>>0;
+				g = ((datax)&0x03e0)>>5;
+				b = ((datax)&0x7c00)>>10;
+
+				palette_set_color_rgb(space->machine, pal_offs & 0x1fff, pal5bit(r), pal5bit(g), pal5bit(b));
+			}
+			break;
+	}
+}
+
+static ADDRESS_MAP_START( pinkiri8_io, ADDRESS_SPACE_IO, 8 )
+	ADDRESS_MAP_GLOBAL_MASK(0xff)
+	AM_RANGE(0x00, 0x3f) AM_RAM //Z180 internal I/O
+	AM_RANGE(0x60, 0x60) AM_WRITE(output_regs_w)
+	AM_RANGE(0x80, 0x83) AM_WRITE(pinkiri8_vram_w)
+	AM_RANGE(0xb0, 0xb0) AM_WRITENOP //mux
+	AM_RANGE(0xb0, 0xb1) AM_READ(unk_r) // mux inputs
+	AM_RANGE(0xb2, 0xb2) AM_READ(unk_r) //bit 0 causes a reset inside the NMI routine
+	AM_RANGE(0xf8, 0xf8) AM_READ(unk_r) //test bit 0
+	AM_RANGE(0xf9, 0xf9) AM_READ(unk_r)
+	AM_RANGE(0xfa, 0xfa) AM_READ(unk_r) //test bit 7
+	AM_RANGE(0xfb, 0xfb) AM_READ(unk_r)
 ADDRESS_MAP_END
 
 static INPUT_PORTS_START( pinkiri8 )
@@ -31,20 +121,21 @@ static const gfx_layout charlayout =
 	8,8,
 	RGN_FRAC(1,5),
 	5,
-	{ RGN_FRAC(0,5),RGN_FRAC(1,5),RGN_FRAC(2,5),RGN_FRAC(3,5),RGN_FRAC(4,5) },
+	{ RGN_FRAC(4,5),RGN_FRAC(3,5),RGN_FRAC(2,5),RGN_FRAC(1,5),RGN_FRAC(0,5) },
 	{ 0, 1, 2, 3, 4, 5, 6, 7 },
 	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
 	8*8
 };
 
 static GFXDECODE_START( pinkiri8 )
-	GFXDECODE_ENTRY( "gfx1", 0, charlayout,     0, 8 )
+	GFXDECODE_ENTRY( "gfx1", 0, charlayout,     0, 0x100 )
 GFXDECODE_END
 
 static MACHINE_DRIVER_START( pinkiri8 )
 	MDRV_CPU_ADD("maincpu",Z180,16000000)
 	MDRV_CPU_PROGRAM_MAP(pinkiri8_map)
-//  MDRV_CPU_VBLANK_INT_HACK(irq0_line_hold,4)
+	MDRV_CPU_IO_MAP(pinkiri8_io)
+	MDRV_CPU_VBLANK_INT("screen",nmi_line_assert)
 
 	MDRV_SCREEN_ADD("screen", RASTER)
 	MDRV_SCREEN_REFRESH_RATE(60)
@@ -53,7 +144,7 @@ static MACHINE_DRIVER_START( pinkiri8 )
 	MDRV_SCREEN_SIZE(32*8, 32*8)
 	MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
 	MDRV_GFXDECODE(pinkiri8)
-	MDRV_PALETTE_LENGTH(512)
+	MDRV_PALETTE_LENGTH(0x2000)
 
 	MDRV_VIDEO_START(pinkiri8)
 	MDRV_VIDEO_UPDATE(pinkiri8)
@@ -73,6 +164,7 @@ MACHINE_DRIVER_END
 ROM_START( pinkiri8 )
 	ROM_REGION( 0x20000, "maincpu", 0 )
 	ROM_LOAD( "pinkiri8-ver.1.02.l1",   0x0000, 0x20000, CRC(f2df5b12) SHA1(e374e184a6a1e932550516011ec09a5accec9b03) )
+	ROM_LOAD( "bios.rom", 0x0000, 0x4000, CRC(399df1ee) SHA1(8251f3aa7da4c7899c8e739c10b61260f4471311) ) //overlapped internal ROM
 
 	ROM_REGION( 0x20000*5, "gfx1", 0 )
 	ROM_LOAD( "pinkiri8-chr-01.a1",  0x00000, 0x20000, CRC(8ec73662) SHA1(9098348e519ce753dd7f38f0d855181bfc65aa42) )
@@ -80,6 +172,8 @@ ROM_START( pinkiri8 )
 	ROM_LOAD( "pinkiri8-chr-03.d1",  0x40000, 0x20000, CRC(bd5f269a) SHA1(7dfd039227551f0f0ed4afaafc76ca64a39a9b83) )
 	ROM_LOAD( "pinkiri8-chr-04.ef1", 0x60000, 0x20000, CRC(4d0e5005) SHA1(4b90119c359c4de576131fd0e28d2fe1482ce74f) )
 	ROM_LOAD( "pinkiri8-chr-05.h1",  0x80000, 0x20000, CRC(036ca165) SHA1(c4a2d6e394bbabcae1413d8a2916a19c90687edf) )
+
+	ROM_REGION( 0x80000, "vram", ROMREGION_ERASE00)
 ROM_END
 
 GAME( 2005?, pinkiri8,  0,   pinkiri8,  pinkiri8,  0, ROT0, "<unknown>", "Pinkiri 8", GAME_NOT_WORKING| GAME_NO_SOUND )