text: /***********************************************************************************************
  
      Sega System C (System 14)/C2 Driver
      driver by David Haywood and Aaron Giles
      ---------------------------------------
      Last Update 15 Nov 2005
  
  
      Sega's C2 was used between 1989 and 1994, the hardware being very similar to that
      used by the Sega MegaDrive/Genesis Home Console Sega produced around the same time.
  
      The Columns manual call this system 'System 14' instead of system C/C2.
  
  
      todo: fill in protection chip data
  
      Year  Game                       Developer         Protection Chip  Board  Number
      ====  ====================       ================  ===============  =====  ======
      1989  Bloxeed                    Sega / Elorg      n/a              C
      1990  Columns                    Sega              317-0149         C      171-5880B
      1990  Columns II                 Sega              317-0160         C
      1990  ThunderForce AC            Sega / Technosoft 317-0172         C2
      1990  Borench                    Sega              317-0173         C2
      1991  Twin Squash                Sega              317-0193         C2
      1992  Ribbit!                    Sega              317-0178         C2
      1992  Puyo Puyo                  Sega / Compile    317-0203         C2
      1992  Tant-R (Japan)             Sega              317-0211         C2
      1992  Tant-R (Korea)             Sega              ?                C2
      1994  PotoPoto (Japan)           Sega              317-0218         C2
      1994  Stack Columns (Japan)      Sega              317-0219         C2
      1994  Stack Columns (World)      Sega              317-0223         C2
      1994  Ichidant-R (Japan)         Sega              317-0224         C2
      1994  Ichidant-R (World)         Sega              ?                C2
      1994  Ichidant-R (Korea)         Sega              ?                C2
      1994  Puyo Puyo 2                Compile           317-0228         C2
      1994  Zunzunkyou No Yabou        Sega              ?                C2
  
      1995  Print Club (Vol.1)         Atlus             ?                C2
      1995  Print Club (Vol.2)         Atlus             ?                C2
      1996  Print Club (Vol.4)         Atlus             ?                C2
      1996  Print Club (Vol.5)         Atlus             ?                C2
  
  
       Notes:
              Bloxeed doesn't Read from the Protection Chip at all; all of the other games do.
              Currently the protection chip is mostly understood, and needs a table of 256
              4-bit values for each game. In all cases except for Poto Poto and Puyo Puyo 2,
              the table is embedded in the code. Workarounds for the other 2 cases are
              provided.
  
              I'm assuming System-C was the Board without the uPD7759 chip and System-C2 was the
              version of the board with it, this could be completely wrong but it doesn't really
              matter anyway.
  
      Bugs:   Puyo Puyo ends up with a black screen after doing memory tests
              Battery-backed RAM needs to be figured out
  
      Thanks: (in no particular order) to any MameDev that helped me out .. (OG, Mish etc.)
              Charles MacDonald for his C2Emu .. without it working out what were bugs in my code
                  and issues due to protection would have probably killed the driver long ago :p
              Razoola & Antiriad .. for helping teach me some 68k ASM needed to work out just why
                  the games were crashing :)
              Sega for producing some Fantastic Games...
              and anyone else who knows they've contributed :)
  
  ***********************************************************************************************/
  
  
  #include "driver.h"
  #include "cpu/m68000/m68000.h"
  #include "sound/okim6295.h"
  #include "sound/sn76496.h"
  #include "sound/2612intf.h"
  #include "sound/upd7759.h"
  
  #include "megadriv.h"
  
  #define XL1_CLOCK			640000
  #define XL2_CLOCK			53693175
  
  
  #define LOG_PROTECTION		1
  #define LOG_PALETTE			0
  #define LOG_IOCHIP			0
  
  
  static void recompute_palette_tables(void);
  static int segac2_enable_display;
  
  /******************************************************************************
      Global variables
  ******************************************************************************/
  
  /* internal states */
  static UINT8 		misc_io_data[0x10];	/* holds values written to the I/O chip */
  
  /* protection-related tracking */
  static int (*prot_func)(int in);		/* emulation of protection chip */
  static UINT8 		prot_write_buf;		/* remembers what was written */
  static UINT8		prot_read_buf;		/* remembers what was returned */
  
  /* palette-related variables */
  static UINT8		segac2_alt_palette_mode;
  static UINT8		palbank;
  static UINT8		bg_palbase;
  static UINT8		sp_palbase;
  
  /* sound-related variables */
  static UINT8		sound_banks;		/* number of sound banks */
  
  
  
  /******************************************************************************
      Machine init
  *******************************************************************************
  
      This is called at init time, when it's safe to create a timer. We use
      it to prime the scanline interrupt timer.
  
  ******************************************************************************/
  
  static MACHINE_START( segac2 )
  {
  	state_save_register_global_array(machine, misc_io_data);
  	state_save_register_global(machine, prot_write_buf);
  	state_save_register_global(machine, prot_read_buf);
  
  //  MACHINE_START_CALL(genesis);
  }
  
  
  static MACHINE_RESET( segac2 )
  {
  	megadrive_ram = generic_nvram16;
  
  	/* set up interrupts and such */
  	MACHINE_RESET_CALL(megadriv);
  
  
  	/* determine how many sound banks */
  	sound_banks = 0;
  	if (memory_region(machine, "upd"))
  		sound_banks = memory_region_length(machine, "upd") / 0x20000;
  
  	/* reset the protection */
  	prot_write_buf = 0;
  	prot_read_buf = 0;
  	segac2_alt_palette_mode = 0;
  
  	palbank = 0;
  	bg_palbase = 0;
  	sp_palbase = 0;
  
  	recompute_palette_tables();
  
  }
  
  
  
  
  /******************************************************************************
      Sound handlers
  *******************************************************************************
  
      These handlers are responsible for communicating with the (genenerally)
      8-bit sound chips. All accesses are via the low byte.
  
      The Sega C/C2 system uses a YM3438 (compatible with the YM2612) for FM-
      based music generation, and an SN76489 for PSG and noise effects. The
      C2 board also appears to have a UPD7759 for sample playback.
  
  ******************************************************************************/
  
  /* handle writes to the UPD7759 */
  static WRITE16_DEVICE_HANDLER( segac2_upd7759_w )
  {
  	/* make sure we have a UPD chip */
  	if (!sound_banks)
  		return;
  
  	/* only works if we're accessing the low byte */
  	if (ACCESSING_BITS_0_7)
  	{
  		upd7759_port_w(device, 0, data & 0xff);
  		upd7759_start_w(device, 0);
  		upd7759_start_w(device, 1);
  	}
  }
  
  
  
  /******************************************************************************
      Palette RAM Read / Write Handlers
  *******************************************************************************
  
      The following Read / Write Handlers are used when accessing Palette RAM.
      The C2 Hardware appears to use 4 Banks of Colours 1 of which can be Mapped
      to 0x8C0000 - 0x8C03FF at any given time by writes to 0x84000E (This same
      address also looks to be used for things like Sample Banking)
  
      Each Colour uses 15-bits (from a 16-bit word) in the Format
          xBGRBBBB GGGGRRRR  (x = unused, B = Blue, G = Green, R = Red)
  
      As this works out the Palette RAM Stores 2048 from a Possible 4096 Colours
      at any given time.
  
  ******************************************************************************/
  
  /* handle reads from the paletteram */
  static READ16_HANDLER( palette_r )
  {
  	offset &= 0x1ff;
  	if (segac2_alt_palette_mode)
  		offset = ((offset << 1) & 0x100) | ((offset << 2) & 0x80) | ((~offset >> 2) & 0x40) | ((offset >> 1) & 0x20) | (offset & 0x1f);
  	return paletteram16[offset + palbank * 0x200];
  }
  
  /* handle writes to the paletteram */
  static WRITE16_HANDLER( palette_w )
  {
  	int r,g,b,newword;
  	int tmpr,tmpg,tmpb;
  
  	/* adjust for the palette bank */
  	offset &= 0x1ff;
  	if (segac2_alt_palette_mode)
  		offset = ((offset << 1) & 0x100) | ((offset << 2) & 0x80) | ((~offset >> 2) & 0x40) | ((offset >> 1) & 0x20) | (offset & 0x1f);
  	offset += palbank * 0x200;
  
  	/* combine data */
  	COMBINE_DATA(&paletteram16[offset]);
  	newword = paletteram16[offset];
  
  	/* up to 8 bits */
  	r = ((newword << 1) & 0x1e) | ((newword >> 12) & 0x01);
  	g = ((newword >> 3) & 0x1e) | ((newword >> 13) & 0x01);
  	b = ((newword >> 7) & 0x1e) | ((newword >> 14) & 0x01);
  
  	/* set the color */
  	palette_set_color_rgb(space->machine, offset, pal5bit(r), pal5bit(g), pal5bit(b));
  
  	megadrive_vdp_palette_lookup[offset] = (b) | (g<<5) | (r<<10);
  	megadrive_vdp_palette_lookup_sprite[offset] = (b) | (g<<5) | (r<<10);
  
  	tmpr = r>>1;tmpg=g>>1;tmpb=b>>1;
  	megadrive_vdp_palette_lookup_shadow[offset] = (tmpb) | (tmpg<<5) | (tmpr<<10);
  
  	// how is it calculated on c2?
  	tmpr = tmpr|0x10; 	tmpg = tmpg|0x10; 	tmpb = tmpb|0x10;
  	megadrive_vdp_palette_lookup_highlight[offset] = (tmpb) | (tmpg<<5) | (tmpr<<10);
  }
  
  
  
  /******************************************************************************
      Palette Tables
  *******************************************************************************
  
      Both the background and sprites within the VDP have 4 possible palettes
      to select from. External hardware on the C2 boards, controlled by the
      EPM5032 chip and the I/O chip, allows for more complex palette selection.
      The actual palette entry comes from:
  
          Bits 10-9 = output from I/O port H
          Bits  8-5 = output from EPM5032
          Bits  4-0 = direct from the VDP
  
      In order to compute bits 8-5, the EPM5032 gets the sprite/background
      output line along with the two bits of palette info. For most games, the
      two bits of palette info map straight through as follows:
  
          Bits 10-9 = output from I/O port H
          Bits    8 = sprite/background select
          Bits  7-6 = palette selected by writing to prot_w
          Bits  5-4 = direct from the VDP palette select
          Bits  3-0 = direct from the VDP
  
      However, because there are 4 bits completely controlled by the EPM5032,
      it doesn't have to always map this way. An alternate palette mode can
      be selected which alters the output palette by swizzling the color
      RAM address bits.
  
  ******************************************************************************/
  
  static void recompute_palette_tables(void)
  {
  	int i;
  
  	for (i = 0; i < 4; i++)
  	{
  		int bgpal = 0x000 + bg_palbase * 0x40 + i * 0x10;
  		int sppal = 0x100 + sp_palbase * 0x40 + i * 0x10;
  
  		if (!segac2_alt_palette_mode)
  		{
  			segac2_bg_pal_lookup[i] = 0x200 * palbank + bgpal;
  			segac2_sp_pal_lookup[i] = 0x200 * palbank + sppal;
  		}
  		else
  		{
  			segac2_bg_pal_lookup[i] = 0x200 * palbank + ((bgpal << 1) & 0x180) + ((~bgpal >> 2) & 0x40) + (bgpal & 0x30);
  			segac2_sp_pal_lookup[i] = 0x200 * palbank + ((~sppal << 2) & 0x100) + ((sppal << 2) & 0x80) + ((~sppal >> 2) & 0x40) + ((sppal >> 2) & 0x20) + (sppal & 0x10);
  		}
  	}
  
  }
  
  
  
  /******************************************************************************
      I/O Read & Write Handlers
  *******************************************************************************
  
      Controls, and Poto Poto reads 'S' 'E' 'G' and 'A' (SEGA) from this area
      as a form of protection.
  
      Lots of unknown writes however offset 0E certainly seems to be banking,
      both colours and sound sample banks.
  
  ******************************************************************************/
  
  static READ16_HANDLER( io_chip_r )
  {
  	static const char *const portnames[] = { "P1", "P2", "PORTC", "PORTD", "SERVICE", "COINAGE", "DSW", "PORTH" };
  	offset &= 0x1f/2;
  
  	switch (offset)
  	{
  		/* I/O ports */
  		case 0x00/2:
  		case 0x02/2:
  		case 0x04/2:
  		case 0x06/2:
  		case 0x08/2:
  		case 0x0a/2:
  		case 0x0c/2:
  		case 0x0e/2:
  			/* if the port is configured as an output, return the last thing written */
  			if (misc_io_data[0x1e/2] & (1 << offset))
  				return misc_io_data[offset];
  
  			/* otherwise, return an input port */
  			if (offset == 0x04/2 && sound_banks)
  				return (input_port_read(space->machine, portnames[offset]) & 0xbf) | (upd7759_busy_r(devtag_get_device(space->machine, "upd")) << 6);
  			return input_port_read(space->machine, portnames[offset]);
  
  		/* 'SEGA' protection */
  		case 0x10/2:
  			return 'S';
  		case 0x12/2:
  			return 'E';
  		case 0x14/2:
  			return 'G';
  		case 0x16/2:
  			return 'A';
  
  		/* CNT register & mirror */
  		case 0x18/2:
  		case 0x1c/2:
  			return misc_io_data[0x1c/2];
  
  		/* port direction register & mirror */
  		case 0x1a/2:
  		case 0x1e/2:
  			return misc_io_data[0x1e/2];
  	}
  	return 0xffff;
  }
  
  
  static WRITE16_HANDLER( io_chip_w )
  {
  	UINT8 newbank;
  	UINT8 old;
  
  	/* generic implementation */
  	offset &= 0x1f/2;
  	old = misc_io_data[offset];
  	misc_io_data[offset] = data;
  
  	switch (offset)
  	{
  		/* I/O ports */
  		case 0x00/2:
  		case 0x02/2:
  		case 0x04/2:
  		case 0x08/2:
  		case 0x0a/2:
  		case 0x0c/2:
  			break;
  
  		/* miscellaneous output */
  		case 0x06/2:
  			/*
               D7 : To pin 3 of JP15. (Watchdog clock control)
               D6 : To MUTE input pin on TDA1518BQ amplifier.
               D5 : To CN2 pin 10. (Unknown purpose)
               D4 : To CN2 pin 11. (Unknown purpose)
               D3 : To CN1 pin K. (Coin lockout 2)
               D2 : To CN1 pin 9. (Coin lockout 1)
               D1 : To CN1 pin J. (Coin meter 2)
               D0 : To CN1 pin 8. (Coin meter 1)
              */
  /*          coin_lockout_w(1, data & 0x08);
              coin_lockout_w(0, data & 0x04); */
  			coin_counter_w(1, data & 0x02);
  			coin_counter_w(0, data & 0x01);
  			break;
  
  		/* banking */
  		case 0x0e/2:
  			/*
               D7 : To pin A19 of CN4
               D6 : To pin B19 of CN4
               D5 : ?
               D4 : ?
               D3 : To pin 31 of uPD7759 sample ROM (A18 on a 27C040)
               D2 : To pin 30 of uPD7759 sample ROM (A17 on a 27C040)
               D1 : To A10 of color RAM
               D0 : To A9 of color RAM
              */
  			newbank = data & 3;
  			if (newbank != palbank)
  			{
  				//video_screen_update_partial(space->machine->primary_screen, video_screen_get_vpos(space->machine->primary_screen) + 1);
  				palbank = newbank;
  				recompute_palette_tables();
  			}
  			if (sound_banks > 1)
  			{
  				const device_config *upd = devtag_get_device(space->machine, "upd");
  				newbank = (data >> 2) & (sound_banks - 1);
  				upd7759_set_bank_base(upd, newbank * 0x20000);
  			}
  			break;
  
  		/* CNT register */
  		case 0x1c/2:
  			if (sound_banks > 1)
  			{
  				const device_config *upd = devtag_get_device(space->machine, "upd");
  				upd7759_reset_w(upd, (data >> 1) & 1);
  			}
  			break;
  	}
  }
  
  
  
  /******************************************************************************
      Control Write Handler
  *******************************************************************************
  
      Seems to control some global states. The most important bit is the low
      one, which enables/disables the display. This is used while tiles are
      being modified in Bloxeed.
  
  ******************************************************************************/
  
  static WRITE16_HANDLER( control_w )
  {
  	/* skip if not LSB */
  	if (!ACCESSING_BITS_0_7)
  		return;
  	data &= 0x0f;
  
  	/* bit 0 controls display enable */
  	//segac2_enable_display(space->machine, ~data & 1);
  	segac2_enable_display = ~data & 1;
  
  	/* bit 1 resets the protection */
  	if (!(data & 2))
  		prot_write_buf = prot_read_buf = 0;
  
  	/* bit 2 controls palette shuffling; only ribbit and twinsqua use this feature */
  	segac2_alt_palette_mode = ((~data & 4) >> 2);
  	recompute_palette_tables();
  }
  
  
  
  /******************************************************************************
      Protection Read / Write Handlers
  *******************************************************************************
  
      The protection chip is fairly simple. Writes to it control the palette
      banking for the sprites and backgrounds. The low 4 bits are also
      remembered in a 2-stage FIFO buffer. A read from this chip should
      return a value from a 256x4-bit table. The index into this table is
      computed by taking the second-to-last value written in the upper 4 bits,
      and the previously-fetched table value in the lower 4 bits.
  
  ******************************************************************************/
  
  /* protection chip reads */
  static READ16_HANDLER( prot_r )
  {
  	if (LOG_PROTECTION) logerror("%06X:protection r=%02X\n", cpu_get_previouspc(space->cpu), prot_func ? prot_read_buf : 0xff);
  	return prot_read_buf | 0xf0;
  }
  
  
  /* protection chip writes */
  static WRITE16_HANDLER( prot_w )
  {
  	int new_sp_palbase = (data >> 2) & 3;
  	int new_bg_palbase = data & 3;
  	int table_index;
  
  	/* only works for the LSB */
  	if (!ACCESSING_BITS_0_7)
  		return;
  
  	/* compute the table index */
  	table_index = (prot_write_buf << 4) | prot_read_buf;
  
  	/* keep track of the last write for the next table lookup */
  	prot_write_buf = data & 0x0f;
  
  	/* determine the value to return, should a read occur */
  	if (prot_func)
  		prot_read_buf = prot_func(table_index);
  	if (LOG_PROTECTION) logerror("%06X:protection w=%02X, new result=%02X\n", cpu_get_previouspc(space->cpu), data & 0x0f, prot_read_buf);
  
  	/* if the palette changed, force an update */
  	if (new_sp_palbase != sp_palbase || new_bg_palbase != bg_palbase)
  	{
  		//video_screen_update_partial(space->machine->primary_screen, video_screen_get_vpos(space->machine->primary_screen) + 1);
  		sp_palbase = new_sp_palbase;
  		bg_palbase = new_bg_palbase;
  		recompute_palette_tables();
  		if (LOG_PALETTE) logerror("Set palbank: %d/%d (scan=%d)\n", bg_palbase, sp_palbase, video_screen_get_vpos(space->machine->primary_screen));
  	}
  }
  
  
  
  /******************************************************************************
      Counter/timer I/O
  *******************************************************************************
  
      There appears to be a chip that is used to count coins and track time
      played, or at the very least the current status of the game. All games
      except Puyo Puyo 2 and Poto Poto access this in a mostly consistent
      manner.
  
  ******************************************************************************/
  
  static WRITE16_HANDLER( counter_timer_w )
  {
  	/* only LSB matters */
  	if (ACCESSING_BITS_0_7)
  	{
  		/*int value = data & 1;*/
  		switch (data & 0x1e)
  		{
  			case 0x00:	/* player 1 start/stop */
  			case 0x02:	/* player 2 start/stop */
  			case 0x04:	/* ??? */
  			case 0x06:	/* ??? */
  			case 0x08:	/* player 1 game timer? */
  			case 0x0a:	/* player 2 game timer? */
  			case 0x0c:	/* ??? */
  			case 0x0e:	/* ??? */
  				break;
  
  			case 0x10:	/* coin counter */
  //              coin_counter_w(0,1);
  //              coin_counter_w(0,0);
  				break;
  
  			case 0x12:	/* set coinage info -- followed by two 4-bit values */
  				break;
  
  			case 0x14:	/* game timer? (see Tant-R) */
  			case 0x16:	/* intro timer? (see Tant-R) */
  			case 0x18:	/* ??? */
  			case 0x1a:	/* ??? */
  			case 0x1c:	/* ??? */
  				break;
  
  			case 0x1e:	/* reset */
  				break;
  		}
  	}
  }
  
  
  
  /******************************************************************************
      Print Club camera handling
  *******************************************************************************
  
      Just some fake stuff to get us to boot.
  
  ******************************************************************************/
  
  static int cam_data;
  
  static READ16_HANDLER( printer_r )
  {
  	return cam_data;
  }
  
  static WRITE16_HANDLER( print_club_camera_w )
  {
  	cam_data = data;
  }
  
  
  
  
  /******************************************************************************
      Memory Maps
  *******************************************************************************
  
      The System C/C2 68k Memory map is fairly similar to the Genesis in terms
      of RAM, ROM, VDP access locations, although the differences between the
      arcade system and the Genesis means its not same.
  
  ******************************************************************************/
  
  static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 16 )
  	AM_RANGE(0x000000, 0x1fffff) AM_ROM
  	AM_RANGE(0x800000, 0x800001) AM_MIRROR(0x13fdfe) AM_READWRITE(prot_r, prot_w)
  	AM_RANGE(0x800200, 0x800201) AM_MIRROR(0x13fdfe) AM_WRITE(control_w)
  	AM_RANGE(0x840000, 0x84001f) AM_MIRROR(0x13fee0) AM_READWRITE(io_chip_r, io_chip_w)
  	AM_RANGE(0x840100, 0x840107) AM_MIRROR(0x13fef8) AM_DEVREADWRITE8("ym", ym3438_r, ym3438_w, 0x00ff)
  	AM_RANGE(0x880100, 0x880101) AM_MIRROR(0x13fefe) AM_WRITE(counter_timer_w)
  	AM_RANGE(0x8c0000, 0x8c0fff) AM_MIRROR(0x13f000) AM_READWRITE(palette_r, palette_w) AM_BASE(&paletteram16)
  	AM_RANGE(0xc00000, 0xc0001f) AM_MIRROR(0x18ff00) AM_READWRITE(megadriv_vdp_r, megadriv_vdp_w)
  	AM_RANGE(0xe00000, 0xe0ffff) AM_MIRROR(0x1f0000) AM_RAM AM_BASE(&generic_nvram16) AM_SIZE(&generic_nvram_size)
  ADDRESS_MAP_END
  
  
  
  /******************************************************************************
      Input Ports
  *******************************************************************************
  
      The input ports on the C2 games always consist of 1 Coin Port, 2 Player
      Input ports and 2 Dipswitch Ports, 1 of those Dipswitch Ports being used
      for coinage, the other for Game Options.
  
      Most of the Games List the Dipswitchs and Inputs in the Test Menus, adding
      them is just a tedious task.  I think Columnns & Bloxeed are Exceptions
      and will need their Dipswitches working out by observation.  The Coin Part
      of the DSW's seems fairly common to all games.
  
  ******************************************************************************/
  
  static INPUT_PORTS_START( systemc_generic )
      PORT_START("P1")
      PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)
  	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
      PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
      PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)
      PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
      PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
  
      PORT_START("P2")
      PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
  	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
      PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
      PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
      PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
      PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
  
  	PORT_START("PORTC")
  	PORT_BIT( 0x3f, IP_ACTIVE_LOW, IPT_UNUSED )
  	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SPECIAL )	/* From uPD7759 pin 18. (/BUSY output) */
  	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SPECIAL )	/* From MB3773P pin 1. (/RESET output) */
  
  	PORT_START("PORTD")
  	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )
  
  	PORT_START("SERVICE")
      PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
  	PORT_SERVICE_NO_TOGGLE( 0x04, IP_ACTIVE_LOW )
      PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_SERVICE1 )
      PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START1 )
      PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START2 )
      PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
      PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
  
  	PORT_START("COINAGE")
  	PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Coin_A ) )
  	PORT_DIPSETTING(    0x07, DEF_STR( 4C_1C ) )
  	PORT_DIPSETTING(    0x08, DEF_STR( 3C_1C ) )
  	PORT_DIPSETTING(    0x09, DEF_STR( 2C_1C ) )
  	PORT_DIPSETTING(    0x05, "2 Coins/1 Credit 5/3 6/4" )
  	PORT_DIPSETTING(    0x04, "2 Coins/1 Credit 4/3" )
  	PORT_DIPSETTING(    0x0f, DEF_STR( 1C_1C ) )
  	PORT_DIPSETTING(    0x01, "1 Coin/1 Credit 2/3" )
  	PORT_DIPSETTING(    0x02, "1 Coin/1 Credit 4/5" )
  	PORT_DIPSETTING(    0x03, "1 Coin/1 Credit 5/6" )
  	PORT_DIPSETTING(    0x06, DEF_STR( 2C_3C ) )
  	PORT_DIPSETTING(    0x0e, DEF_STR( 1C_2C ) )
  	PORT_DIPSETTING(    0x0d, DEF_STR( 1C_3C ) )
  	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_4C ) )
  	PORT_DIPSETTING(    0x0b, DEF_STR( 1C_5C ) )
  	PORT_DIPSETTING(    0x0a, DEF_STR( 1C_6C ) )
  	PORT_DIPSETTING(    0x00, "Free Play (if Coin B too) or 1/1" )
  	PORT_DIPNAME( 0xf0, 0xf0, DEF_STR( Coin_B ) )
  	PORT_DIPSETTING(    0x70, DEF_STR( 4C_1C ) )
  	PORT_DIPSETTING(    0x80, DEF_STR( 3C_1C ) )
  	PORT_DIPSETTING(    0x90, DEF_STR( 2C_1C ) )
  	PORT_DIPSETTING(    0x50, "2 Coins/1 Credit 5/3 6/4" )
  	PORT_DIPSETTING(    0x40, "2 Coins/1 Credit 4/3" )
  	PORT_DIPSETTING(    0xf0, DEF_STR( 1C_1C ) )
  	PORT_DIPSETTING(    0x10, "1 Coin/1 Credit 2/3" )
  	PORT_DIPSETTING(    0x20, "1 Coin/1 Credit 4/5" )
  	PORT_DIPSETTING(    0x30, "1 Coin/1 Credit 5/6" )
  	PORT_DIPSETTING(    0x60, DEF_STR( 2C_3C ) )
  	PORT_DIPSETTING(    0xe0, DEF_STR( 1C_2C ) )
  	PORT_DIPSETTING(    0xd0, DEF_STR( 1C_3C ) )
  	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_4C ) )
  	PORT_DIPSETTING(    0xb0, DEF_STR( 1C_5C ) )
  	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_6C ) )
  	PORT_DIPSETTING(    0x00, "Free Play (if Coin A too) or 1/1" )
  
  	PORT_START("DSW")
  	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
  	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
  	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
  	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
  	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
  	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
  	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
  	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  
  	PORT_START("PORTH")
  	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( columns )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      /* The first level increase (from 0 to 1) is always after destroying
         35 jewels. Then, the level gets 1 level more every : */
      PORT_DIPNAME( 0x30, 0x30, DEF_STR( Difficulty ) )
      PORT_DIPSETTING(    0x00, DEF_STR( Easiest ) )  // 50 jewels
      PORT_DIPSETTING(    0x10, DEF_STR( Easy ) )     // 40 jewels
      PORT_DIPSETTING(    0x30, DEF_STR( Normal ) )   // 35 jewels
      PORT_DIPSETTING(    0x20, DEF_STR( Hard ) )     // 25 jewels
  INPUT_PORTS_END
  
  static INPUT_PORTS_START( columnsu )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Cabinet ) )
  	PORT_DIPSETTING(    0x01, DEF_STR( Upright ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
  	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x04, 0x00, "Background Music" )	/* listed in the manual, ON by default */
  	PORT_DIPSETTING(    0x04, "BGM #1" )
  	PORT_DIPSETTING(    0x00, "BGM #2" )
      /* The first level increase (from 0 to 1) is always after destroying
         35 jewels. Then, the level gets 1 level more every : */
      PORT_DIPNAME( 0x30, 0x30, DEF_STR( Difficulty ) )
      PORT_DIPSETTING(    0x00, DEF_STR( Easiest ) )  // 50 jewels
      PORT_DIPSETTING(    0x10, DEF_STR( Easy ) )     // 40 jewels
      PORT_DIPSETTING(    0x30, DEF_STR( Normal ) )   // 35 jewels
      PORT_DIPSETTING(    0x20, DEF_STR( Hard ) )     // 25 jewels
  INPUT_PORTS_END
  
  static INPUT_PORTS_START( columns2 )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Cabinet ) )
  	PORT_DIPSETTING(    0x01, DEF_STR( Upright ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
      PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x0c, 0x0c, "VS. Mode Credits/Match" )
  	PORT_DIPSETTING(    0x0c, "1" )
  	PORT_DIPSETTING(    0x08, "2" )
  	PORT_DIPSETTING(    0x04, "3" )
  	PORT_DIPSETTING(    0x00, "4" )
  	PORT_DIPNAME( 0x30, 0x30, "Flash Mode Difficulty" )
  	PORT_DIPSETTING(    0x20, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0x30, DEF_STR( Medium ) )
  	PORT_DIPSETTING(    0x10, DEF_STR( Hard ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( borench )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x01, 0x01, "Credits to Start" )
  	PORT_DIPSETTING(    0x01, "1" )
  	PORT_DIPSETTING(    0x00, "2" )
      PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x0c, 0x0c, "Lives 1P Mode" )
  	PORT_DIPSETTING(    0x00, "1" )
  	PORT_DIPSETTING(    0x0c, "2" )
  	PORT_DIPSETTING(    0x08, "3" )
  	PORT_DIPSETTING(    0x04, "4" )
      PORT_DIPNAME( 0x30, 0x30, "Lives 2P Mode" )
  	PORT_DIPSETTING(    0x00, "2" )
  	PORT_DIPSETTING(    0x30, "3" )
  	PORT_DIPSETTING(    0x20, "4" )
  	PORT_DIPSETTING(    0x10, "5" )
  	PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Difficulty ) )
  	PORT_DIPSETTING(    0x80, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0xc0, DEF_STR( Medium ) )
  	PORT_DIPSETTING(    0x40, DEF_STR( Hard ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( tfrceac )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x01, 0x01, "Credits to Start" )
  	PORT_DIPSETTING(    0x01, "1" )
  	PORT_DIPSETTING(    0x00, "2" )
      PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Lives ) )
  	PORT_DIPSETTING(    0x00, "2" )
  	PORT_DIPSETTING(    0x0c, "3" )
  	PORT_DIPSETTING(    0x08, "4" )
  	PORT_DIPSETTING(    0x04, "5" )
  	PORT_DIPNAME( 0x30, 0x30,  DEF_STR( Bonus_Life ) )
      PORT_DIPSETTING(    0x10, "10k, 70k, 150k" )
      PORT_DIPSETTING(    0x30, "20k, 100k, 200k" )
      PORT_DIPSETTING(    0x20, "40k, 150k, 300k" )
      PORT_DIPSETTING(    0x00, DEF_STR( None ) )
  	PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Difficulty ) )
  	PORT_DIPSETTING(    0x80, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0xc0, DEF_STR( Medium ) )
  	PORT_DIPSETTING(    0x40, DEF_STR( Hard ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( twinsqua )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
  	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(30) PORT_KEYDELTA(15) PORT_PLAYER(1)
  
  	PORT_MODIFY("P2")
  	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(30) PORT_KEYDELTA(15) PORT_PLAYER(2)
  
  	PORT_MODIFY("SERVICE")
  	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
  	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x01, 0x01, "Credits to Start" )
  	PORT_DIPSETTING(    0x01, "1" )
  	PORT_DIPSETTING(    0x00, "2" )
      PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x04, 0x04, "Buy In" )
  	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x18, 0x18, DEF_STR( Difficulty ) )
  	PORT_DIPSETTING(    0x10, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0x18, DEF_STR( Medium ) )
  	PORT_DIPSETTING(    0x08, DEF_STR( Hard ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
      PORT_DIPNAME( 0x20, 0x20, "Seat Type" )
  	PORT_DIPSETTING(    0x20, DEF_STR( Normal ) )
  	PORT_DIPSETTING(    0x00, "Moving" )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( ribbit )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 1 Unused */
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 1 Unused */
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x01, 0x01, "Credits to Start" )
  	PORT_DIPSETTING(    0x01, "1" )
  	PORT_DIPSETTING(    0x00, "2" )
      PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x0c, 0x04, DEF_STR( Lives ) )
  	PORT_DIPSETTING(    0x08, "1" )
  	PORT_DIPSETTING(    0x0c, "2" )
  	PORT_DIPSETTING(    0x04, "3" )
  	PORT_DIPSETTING(    0x00, "5" )
  	PORT_DIPNAME( 0x30, 0x30, DEF_STR( Difficulty ) )
      PORT_DIPSETTING(    0x20, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0x30, DEF_STR( Normal ) )
      PORT_DIPSETTING(    0x10, DEF_STR( Hard ) )
      PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( puyo )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
      PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x04, 0x04, "VS. Mode Credits/Match" )
  	PORT_DIPSETTING(    0x04, "1" )
  	PORT_DIPSETTING(    0x00, "3" )
  	PORT_DIPNAME( 0x18, 0x18, "1P Mode Difficulty" )
  	PORT_DIPSETTING(    0x10, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0x18, DEF_STR( Medium ) )
  	PORT_DIPSETTING(    0x08, DEF_STR( Hard ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
  	PORT_DIPNAME( 0x80, 0x80, "Moving Seat" )
  	PORT_DIPSETTING(    0x80, "No Use" )
  	PORT_DIPSETTING(    0x00, "In Use" )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( stkclmns )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Difficulty ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0x03, DEF_STR( Medium ) )
  	PORT_DIPSETTING(    0x01, DEF_STR( Hard ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
      PORT_DIPNAME( 0x04, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x08, 0x08, "Match Mode Price" )
  	PORT_DIPSETTING(    0x08, "1" )
  	PORT_DIPSETTING(    0x00, "2" )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( potopoto )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x01, 0x01, "Credits to Start" )
  	PORT_DIPSETTING(    0x01, "1" )
  	PORT_DIPSETTING(    0x00, "2" )
      PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  	PORT_DIPNAME( 0x04, 0x04, "Coin Chute Type" )
  	PORT_DIPSETTING(    0x04, "Common" )
  	PORT_DIPSETTING(    0x00, "Individual" )
  	PORT_DIPNAME( 0x08, 0x08, "Credits to Continue" )
  	PORT_DIPSETTING(    0x08, "1" )
  	PORT_DIPSETTING(    0x00, "2" )
  	PORT_DIPNAME( 0x10, 0x10, "Buy-In" )
  	PORT_DIPSETTING(    0x10, DEF_STR( No ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
  	PORT_DIPNAME( 0x60, 0x60, DEF_STR( Difficulty ) )
  	PORT_DIPSETTING(    0x40, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0x60, DEF_STR( Medium ) )
  	PORT_DIPSETTING(    0x20, DEF_STR( Hard ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
  	PORT_DIPNAME( 0x80, 0x80, "Moving Seat" )
  	PORT_DIPSETTING(    0x80, "No Use" )
  	PORT_DIPSETTING(    0x00, "In Use" )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( zunkyou )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
  	PORT_DIPNAME( 0x01, 0x01, "Game Difficulty 1" )
      PORT_DIPSETTING(    0x01, DEF_STR( Medium ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hard ) )
  	PORT_DIPNAME( 0x02, 0x02, "Game Difficulty 2" )
      PORT_DIPSETTING(    0x02, DEF_STR( Medium ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hard ) )
      PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Lives ) )
  	PORT_DIPSETTING(    0x08, "1" )
  	PORT_DIPSETTING(    0x04, "2" )
  	PORT_DIPSETTING(    0x0c, "3" )
  	PORT_DIPSETTING(    0x00, "5" )
      PORT_DIPNAME( 0x10, 0x00, DEF_STR( Demo_Sounds ) )
  	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( ichir )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
      PORT_DIPNAME( 0x01, 0x00, DEF_STR( Demo_Sounds ) )
      PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x06, 0x06, DEF_STR( Difficulty ) )
      PORT_DIPSETTING(    0x04, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0x06, DEF_STR( Medium ) )
      PORT_DIPSETTING(    0x02, DEF_STR( Hard ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( bloxeedc )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 2 Unused */
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
      PORT_DIPNAME( 0x01, 0x01, "VS Mode Price" )
      PORT_DIPSETTING(    0x00, "Same as Ordinary" )
      PORT_DIPSETTING(    0x01, "Double as Ordinary" )
      PORT_DIPNAME( 0x02, 0x02, "Credits to Start" )
      PORT_DIPSETTING(    0x02, "1" )
  	PORT_DIPSETTING(    0x00, "2" )
      PORT_DIPNAME( 0x08, 0x00, DEF_STR( Demo_Sounds ) )
      PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( puyopuy2 )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("P2")
      PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )		/* Button 3 Unused */
  
  	PORT_MODIFY("DSW")
      PORT_DIPNAME( 0x01, 0x01, "Rannyu Off Button" )
      PORT_DIPSETTING(    0x01, "Use" )
      PORT_DIPSETTING(    0x00, "No Use" )
      PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
      PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x04, 0x04, "Turn Direction" )
      PORT_DIPSETTING(    0x04, "1:Right  2:Left" )
      PORT_DIPSETTING(    0x00, "1:Left  2:Right")
      PORT_DIPNAME( 0x18, 0x18, DEF_STR( Difficulty ) )
      PORT_DIPSETTING(    0x10, DEF_STR( Easy ) )
      PORT_DIPSETTING(    0x18, DEF_STR( Medium ) )
      PORT_DIPSETTING(    0x08, DEF_STR( Hard ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
      PORT_DIPNAME( 0x60, 0x60, "VS Mode Match/1 Play" )
      PORT_DIPSETTING(    0x60, "1" )
      PORT_DIPSETTING(    0x40, "2" )
      PORT_DIPSETTING(    0x20, "3" )
      PORT_DIPSETTING(    0x00, "4" )
      PORT_DIPNAME( 0x80, 0x80, "Battle Start credit" )
      PORT_DIPSETTING(    0x00, "1" )
      PORT_DIPSETTING(    0x80, "2" )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( pclub )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
  	PORT_BIT( 0x0f, IP_ACTIVE_LOW, IPT_UNKNOWN ) 	/* Probably Unused */
      PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Ok")
      PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("Cancel")
      PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY
      PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_2WAY
  
  	PORT_MODIFY("P2")
  	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNKNOWN ) 	/* Probably Unused */
  
  	PORT_MODIFY("SERVICE")
  	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* Probably Unused */
  
  	PORT_MODIFY("COINAGE")
  	PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coinage ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( 7C_1C ) )
  	PORT_DIPSETTING(    0x01, DEF_STR( 6C_1C ) )
  	PORT_DIPSETTING(    0x02, DEF_STR( 5C_1C ) )
  	PORT_DIPSETTING(    0x03, DEF_STR( 4C_1C ) )
      PORT_DIPSETTING(    0x07, DEF_STR( 3C_1C ) )
  	PORT_DIPSETTING(    0x04, DEF_STR( 2C_1C ) )
  	PORT_DIPSETTING(    0x05, DEF_STR( 1C_1C ) )
      PORT_DIPSETTING(    0x06, DEF_STR( Free_Play ) )
      PORT_DIPNAME( 0x08, 0x08, "Unknown 4-4" )
      PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x10, 0x10, "Unknown 4-5" )
      PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x20, 0x20, "Unknown 4-6" )
      PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x40, 0x40, "Unknown 4-7" )
      PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x80, 0x80, "Unknown 4-8" )
      PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  
  	PORT_MODIFY("DSW")
      PORT_DIPNAME( 0x01, 0x01, "Unknown 5-1" )
      PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
      PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x02, 0x02, "Unknown 5-2" )
      PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x04, 0x04, "Unknown 5-3" )
      PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x08, 0x08, "Unknown 5-4" )
      PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x10, 0x10, "Unknown 5-5" )
      PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x20, 0x20, DEF_STR( Demo_Sounds ))
      PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
      PORT_DIPNAME( 0x40, 0x40, "Unknown 5-7" )
      PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x80, 0x80, "Unknown 5-8" )
      PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  INPUT_PORTS_END
  
  
  static INPUT_PORTS_START( pclubjv2 )
  	PORT_INCLUDE( systemc_generic )
  
  	PORT_MODIFY("P1")
  	PORT_BIT( 0x0f, IP_ACTIVE_LOW, IPT_UNKNOWN ) 	/* Probably Unused */
      PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Ok")
      PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("Cancel")
      PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY
      PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_2WAY
  
  	PORT_MODIFY("P2")
  	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNKNOWN ) 	/* Probably Unused */
  
  	PORT_MODIFY("SERVICE")
  	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* Probably Unused */
  
  	PORT_MODIFY("COINAGE")
  	PORT_DIPNAME( 0x07, 0x07, "Coins per Credit (Normal / Alternate)" )
  	PORT_DIPSETTING(    0x00, "25 / 30" ) //7C1C
  	PORT_DIPSETTING(    0x01, "6 / 7" ) //6C1C
  	PORT_DIPSETTING(    0x02, "10 / 12" ) //5C1C
  	PORT_DIPSETTING(    0x03, "1 / 2" ) //4C1C
      PORT_DIPSETTING(    0x07, "3 / Free Play" ) //3C1C
  	PORT_DIPSETTING(    0x04, "15 / 20" ) //2C1C
  	PORT_DIPSETTING(    0x05, "4 / 5" ) //1C1C
      PORT_DIPSETTING(    0x06, "8 / 9" ) //FP
      PORT_DIPNAME( 0x08, 0x08, "Alternate Coinage" )
      PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x10, 0x10, "Unknown 4-5" )
      PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x20, 0x20, "Unknown 4-6" )
      PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x40, 0x40, "Unknown 4-7" )
      PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x80, 0x80, "Unknown 4-8" )
      PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  
  	PORT_MODIFY("DSW")
      PORT_DIPNAME( 0x01, 0x01, "Unknown 5-1" )
      PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
      PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x02, 0x02, "Unknown 5-2" )
      PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x04, 0x04, "Unknown 5-3" )
      PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x08, 0x08, "Unknown 5-4" )
      PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x10, 0x10, "Unknown 5-5" )
      PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x20, 0x20, DEF_STR( Demo_Sounds ))
      PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
      PORT_DIPNAME( 0x40, 0x40, "Unknown 5-7" )
      PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
      PORT_DIPNAME( 0x80, 0x80, "Unknown 5-8" )
      PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
  	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
  INPUT_PORTS_END
  
  /******************************************************************************
      Sound interfaces
  ******************************************************************************/
  
  static void  segac2_irq2_interrupt(const device_config *device, int state)
  {
  	//printf("sound irq %d\n", state);
  	cputag_set_input_line(device->machine, "maincpu", 2, state ? ASSERT_LINE : CLEAR_LINE);
  }
  static const ym3438_interface ym3438_intf =
  {
  	segac2_irq2_interrupt,		/* IRQ handler */
  };
  
  
  
  /******************************************************************************
      Machine Drivers
  *******************************************************************************
  
      General Overview
          M68000 @ 10MHz (Main Processor)
          YM3438 (Fm Sound)
          SN76489 (PSG, Noise, Part of the VDP)
          UPD7759 (Sample Playback, C-2 Only)
  
  ******************************************************************************/
  
  static VIDEO_START(segac2_new)
  {
  	VIDEO_START_CALL(megadriv);
  
  
  	megadrive_vdp_palette_lookup = auto_alloc_array(machine, UINT16, 0x1000/2);
  	megadrive_vdp_palette_lookup_sprite = auto_alloc_array(machine, UINT16, 0x1000/2);
  	megadrive_vdp_palette_lookup_shadow = auto_alloc_array(machine, UINT16, 0x1000/2);
  	megadrive_vdp_palette_lookup_highlight = auto_alloc_array(machine, UINT16, 0x1000/2);
  }
  
  static VIDEO_UPDATE(segac2_new)
  {
  	if (!segac2_enable_display)
  	{
  		bitmap_fill(bitmap, NULL, get_black_pen(screen->machine));
  		return 0;
  	}
  
  	VIDEO_UPDATE_CALL(megadriv);
  	return 0;
  }
  
  
  static MACHINE_DRIVER_START( segac )
  
  	/* basic machine hardware */
  	MDRV_CPU_ADD("maincpu", M68000, XL2_CLOCK/6)
  	MDRV_CPU_PROGRAM_MAP(main_map)
  
  	MDRV_MACHINE_START(segac2)
  	MDRV_MACHINE_RESET(segac2)
  	MDRV_NVRAM_HANDLER(generic_randfill)
  
  	/* video hardware */
  	//MDRV_VIDEO_ATTRIBUTES(VIDEO_HAS_SHADOWS | VIDEO_HAS_HIGHLIGHTS)
  
  	MDRV_SCREEN_ADD("megadriv", RASTER)
  	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB15)
  	MDRV_SCREEN_REFRESH_RATE(60)
  	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)) // Vblank handled manually.
  	MDRV_SCREEN_SIZE(64*8, 64*8)
  	MDRV_SCREEN_VISIBLE_AREA(0, 32*8-1, 0, 28*8-1)
  
  	MDRV_PALETTE_LENGTH(2048)
  
  	MDRV_VIDEO_START(segac2_new)
  	MDRV_VIDEO_UPDATE(segac2_new)
  	MDRV_VIDEO_EOF( megadriv )
  
  	/* sound hardware */
  	MDRV_SPEAKER_STANDARD_MONO("mono")
  
  	MDRV_SOUND_ADD("ym", YM3438, XL2_CLOCK/7)
  	MDRV_SOUND_CONFIG(ym3438_intf)
  	MDRV_SOUND_ROUTE(0, "mono", 0.50)
  	/* right channel not connected */
  
  	MDRV_SOUND_ADD("sn", SN76496, XL2_CLOCK/15)
  	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
  MACHINE_DRIVER_END
  
  
  static MACHINE_DRIVER_START( segac2 )
  
  	/* basic machine hardware */
  	MDRV_IMPORT_FROM( segac )
  
  	/* sound hardware */
  	MDRV_SOUND_ADD("upd", UPD7759, XL1_CLOCK)
  	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
  MACHINE_DRIVER_END
  
  
  
  /******************************************************************************
      Rom Definitions
  *******************************************************************************
  
      Games are in Order of Date (Year) with System-C titles coming first.
  
  ******************************************************************************/
  
  
  /* ----- System C Games ----- */
  
  ROM_START( bloxeedc ) /* Bloxeed (C System Version)  (c)1989 Sega / Elorg */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr12908.32", 0x000000, 0x020000, CRC(fc77cb91) SHA1(248a462e3858ffdc171af7d806e57deecb5dae50) )
  	ROM_LOAD16_BYTE( "epr12907.31", 0x000001, 0x020000, CRC(e5fcbac6) SHA1(a1adec5ef5574bff96a3d66619a24a6715097bb9) )
  	ROM_LOAD16_BYTE( "epr12993.34", 0x040000, 0x020000, CRC(487bc8fc) SHA1(3fb205bf56f35443e993e08b39c1a08c13ca5e3b) )
  	ROM_LOAD16_BYTE( "epr12992.33", 0x040001, 0x020000, CRC(19b0084c) SHA1(b3ba0f3d8d39a19aa66edb24885ea21192e22704) )
  ROM_END
  
  ROM_START( bloxeedu ) /* Bloxeed USA (C System Version)  (c)1989 Sega / Elorg */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr12997a.32", 0x000000, 0x020000, CRC(23655bc9) SHA1(32fc1f75a43aa49dc656d40d34ec10f3f0a2bdb3) )
  	ROM_LOAD16_BYTE( "epr12996a.31", 0x000001, 0x020000, CRC(83c83f0c) SHA1(ca8e2ad7cceabd8de7a91b91cb92eafb6dd3171f) )
  	ROM_LOAD16_BYTE( "epr12993.34", 0x040000, 0x020000, CRC(487bc8fc) SHA1(3fb205bf56f35443e993e08b39c1a08c13ca5e3b) )
  	ROM_LOAD16_BYTE( "epr12992.33", 0x040001, 0x020000, CRC(19b0084c) SHA1(b3ba0f3d8d39a19aa66edb24885ea21192e22704) )
  ROM_END
  
  
  ROM_START( columns ) /* Columns (World) (c)1990 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr13114.32", 0x000000, 0x020000, CRC(ff78f740) SHA1(0a034103a4b942f43e62f6e717f5dbf1bfb0b613) )
  	ROM_LOAD16_BYTE( "epr13113.31", 0x000001, 0x020000, CRC(9a426d9b) SHA1(3322e65ebf8d0a6047f7d408387c63ea401b8973) )
  ROM_END
  
  ROM_START( columnsu ) /* Columns (US) (c)1990 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr13116a.32", 0x000000, 0x020000, CRC(a0284b16) SHA1(a72c8567ab2386ef6bc7bb83cc1612f4c6bf8461) )
  	ROM_LOAD16_BYTE( "epr13115a.31", 0x000001, 0x020000, CRC(e37496f3) SHA1(30ebeed76613ae8d6d3ce9fca282124685067b27) )
  ROM_END
  
  ROM_START( columnsj ) /* Columns (Jpn) (c)1990 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr13112.32", 0x000000, 0x020000, CRC(bae6e53e) SHA1(2c2fd621eecd55591f22d076323972a7d0314615) )
  	ROM_LOAD16_BYTE( "epr13111.31", 0x000001, 0x020000, CRC(aa5ccd6d) SHA1(480e29e3112282d1790f1fb68075453325ba4336) )
  ROM_END
  
  
  ROM_START( columns2 ) /* Columns II - The Voyage Through Time  (c)1990 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr13363.bin", 0x000000, 0x020000, CRC(c99e4ffd) SHA1(67981aa08c8a625af35dd7689011364159cf9194) )
  	ROM_LOAD16_BYTE( "epr13362.bin", 0x000001, 0x020000, CRC(394e2419) SHA1(d4f726b32cf301d0d52611237b83177e69bfaf71) )
  ROM_END
  
  ROM_START( column2j ) /* Columns II - The Voyage Through Time (Jpn)  (c)1990 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr13361.rom", 0x000000, 0x020000, CRC(b54b5f12) SHA1(4d7fbae7d9bcadd433ebc25aef255dc43df611bc) )
  	ROM_LOAD16_BYTE( "epr13360.rom", 0x000001, 0x020000, CRC(a59b1d4f) SHA1(e9ee315677782e1c61ae8f11260101cc03176188) )
  ROM_END
  
  
  ROM_START( tantrbl2 ) /* Tant-R (Puzzle & Action) (Alt Bootleg Running on C Board?, No Samples) */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "trb2_2.32",    0x000000, 0x080000, CRC(8fc99c48) SHA1(d90ed673fe1f6e1f878c0d8fc62f5439b56d0a47) )
  	ROM_LOAD16_BYTE( "trb2_1.31",    0x000001, 0x080000, CRC(c318d00d) SHA1(703760d4ddc45bc0921ae96a27d9a8fbf12a1e96) )
  	ROM_LOAD16_BYTE( "mpr15616.34",  0x100000, 0x080000, CRC(17b80202) SHA1(f47bf2aa0c5972647438619b8453c7dede5c422f) )
  	ROM_LOAD16_BYTE( "mpr15615.33",  0x100001, 0x080000, CRC(36a88bd4) SHA1(cc7f6a947d1b79bb86957c43035b53d6d2bcfa28) )
  ROM_END
  
  ROM_START( tantrbl3 ) /* Tant-R (Puzzle & Action) (Alt Bootleg Running on C Board?, No Samples) */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "2.u29",  0x000000, 0x080000, CRC(faecb7b1) SHA1(ddca61996dbd0d66e9ecc04647e61a6d0af25807) )
  	ROM_LOAD16_BYTE( "1.u28",  0x000001, 0x080000, CRC(3304556d) SHA1(586265c846bf6404dcb33404e961bf0733e24bf5) )
  	ROM_LOAD16_BYTE( "4.u31",  0x100000, 0x080000, CRC(17b80202) SHA1(f47bf2aa0c5972647438619b8453c7dede5c422f) )
  	ROM_LOAD16_BYTE( "3.u30",  0x100001, 0x080000, CRC(36a88bd4) SHA1(cc7f6a947d1b79bb86957c43035b53d6d2bcfa28) )
  ROM_END
  
  ROM_START( ichirjbl ) /* Ichident-R (Puzzle & Action 2) (Bootleg Running on C Board?, No Samples) */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "27c4000.2",0x000000, 0x080000, CRC(5a194f44) SHA1(67a4d21b91704f8c2210b5106e82e22ba3366f4c) )
  	ROM_LOAD16_BYTE( "27c4000.1",0x000001, 0x080000, CRC(de209f84) SHA1(0860d0ebfab2952e82fc1e292bf9410d673d9322) )
  	ROM_LOAD16_BYTE( "epr16888", 0x100000, 0x080000, CRC(85d73722) SHA1(7ebe81b4d6c89f87f60200a3a8cddb07d581adef) )
  	ROM_LOAD16_BYTE( "epr16887", 0x100001, 0x080000, CRC(bc3bbf25) SHA1(e760ad400bc183b38e9787d88c8ac084fbe2ae21) )
  ROM_END
  
  
  /* ----- System C-2 Games ----- */
  
  ROM_START( borench ) /* Borench  (c)1990 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "ic32.bin", 0x000000, 0x040000, CRC(2c54457d) SHA1(adf3ea5393d2633ec6215e64f0cd89ad4567e765) )
  	ROM_LOAD16_BYTE( "ic31.bin", 0x000001, 0x040000, CRC(b46445fc) SHA1(24e85ef5abbc5376a854b13ed90f08f0c30d7f25) )
  
  	ROM_REGION( 0x020000, "upd", 0 )
  	ROM_LOAD( "ic4.bin", 0x000000, 0x020000, CRC(62b85e56) SHA1(822ab733c87938bb70a9e32cc5dd36bbf6f21d11) )
  ROM_END
  
  
  ROM_START( tfrceac ) /* ThunderForce AC  (c)1990 Technosoft / Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "ic32.bin", 0x000000, 0x040000, CRC(95ecf202) SHA1(92b0f351f2bee7d59873a4991615f14f1afe4da7) )
  	ROM_LOAD16_BYTE( "ic31.bin", 0x000001, 0x040000, CRC(e63d7f1a) SHA1(a40d0a5a96f379a467048dc8fddd8aaaeb94da1d) )
  	/* 0x080000 - 0x100000 Empty */
  	ROM_LOAD16_BYTE( "ic34.bin", 0x100000, 0x040000, CRC(29f23461) SHA1(032a7125fef5a660b85654d595aafc46812cdde6) )
  	ROM_LOAD16_BYTE( "ic33.bin", 0x100001, 0x040000, CRC(9e23734f) SHA1(64d27dc53f0ffc3513345a26ed077751b25d15f1) )
  
  	ROM_REGION( 0x040000, "upd", 0 )
  	ROM_LOAD( "ic4.bin", 0x000000, 0x040000, CRC(e09961f6) SHA1(e109b5f41502b765d191f22e3bbcff97d6defaa1) )
  ROM_END
  
  ROM_START( tfrceacj ) /* ThunderForce AC (Jpn)  (c)1990 Technosoft / Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr13657.32", 0x000000, 0x040000, CRC(a0f38ffd) SHA1(da548e7f61aed0e82a460553a119941da8857bc4) )
  	ROM_LOAD16_BYTE( "epr13656.31", 0x000001, 0x040000, CRC(b9438d1e) SHA1(598209c9fec3527fde720af09e5bebd7379f5b2b) )
  	/* 0x080000 - 0x100000 Empty */
  	ROM_LOAD16_BYTE( "ic34.bin",    0x100000, 0x040000, CRC(29f23461) SHA1(032a7125fef5a660b85654d595aafc46812cdde6) )
  	ROM_LOAD16_BYTE( "ic33.bin",    0x100001, 0x040000, CRC(9e23734f) SHA1(64d27dc53f0ffc3513345a26ed077751b25d15f1) )
  
  	ROM_REGION( 0x040000, "upd", 0 )
  	ROM_LOAD( "ic4.bin", 0x000000, 0x040000, CRC(e09961f6) SHA1(e109b5f41502b765d191f22e3bbcff97d6defaa1) )
  ROM_END
  
  ROM_START( tfrceacb ) /* ThunderForce AC (Bootleg)  (c)1990 Technosoft / Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "4.bin",    0x000000, 0x040000, CRC(eba059d3) SHA1(7bc04401f9a138fa151ac09a528b70acfb2021e3) )
  	ROM_LOAD16_BYTE( "3.bin",    0x000001, 0x040000, CRC(3e5dc542) SHA1(4a66dc842afaa145dab82b232738eea107bdf0f8) )
  	/* 0x080000 - 0x100000 Empty */
  	ROM_LOAD16_BYTE( "ic34.bin", 0x100000, 0x040000, CRC(29f23461) SHA1(032a7125fef5a660b85654d595aafc46812cdde6) )
  	ROM_LOAD16_BYTE( "ic33.bin", 0x100001, 0x040000, CRC(9e23734f) SHA1(64d27dc53f0ffc3513345a26ed077751b25d15f1) )
  
  	ROM_REGION( 0x040000, "upd", 0 )
  	ROM_LOAD( "ic4.bin", 0x000000, 0x040000, CRC(e09961f6) SHA1(e109b5f41502b765d191f22e3bbcff97d6defaa1) )
  ROM_END
  
  
  ROM_START( twinsqua ) /* Twin Squash  (c)1991 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "ep14657.32", 0x000000, 0x040000, CRC(becbb1a1) SHA1(787b1a4bf420186d05b5448582f6492e40d394fa) )
  	ROM_LOAD16_BYTE( "ep14656.31", 0x000001, 0x040000, CRC(411906e7) SHA1(68a4e66b9e18499d77cdb584470f35f67edec6fd) )
  
  	ROM_REGION( 0x020000, "upd", 0 )
  	ROM_LOAD( "ep14588.4", 0x000000, 0x020000, CRC(5a9b6881) SHA1(d86ec7f569fae5a1ce93a1cf40998cbb13726e0c) )
  ROM_END
  
  
  ROM_START( ribbit ) /* Ribbit  (c)1991 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "ep13833.32", 0x000000, 0x040000, CRC(5347f8ce) SHA1(b95b99536157edfbf0d74a42f64235f47dca7ee1) )
  	ROM_LOAD16_BYTE( "ep13832.31", 0x000001, 0x040000, CRC(889c42c2) SHA1(0839a50a68b64a66d995f1bfaff42fcb60bb4d45) )
  	ROM_COPY( "maincpu", 0x000000, 0x080000, 0x080000 )
  	ROM_LOAD16_BYTE( "ep13838.34", 0x100000, 0x080000, CRC(a5d62ac3) SHA1(8d83a7bc4017e125ef4231278f766b2368d5fc1f) )
  	ROM_LOAD16_BYTE( "ep13837.33", 0x100001, 0x080000, CRC(434de159) SHA1(cf2973131cabf2bc0ebb2bfe9f804ad3d7d0a733) )
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "ep13834.4", 0x000000, 0x020000, CRC(ab0c1833) SHA1(f864e12ecf6c0524da20fc66747a4fa4280e67e9) )
  ROM_END
  
  
  ROM_START( tantr ) /* Tant-R (Puzzle & Action)  (c)1992 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr15614.32", 0x000000, 0x080000, CRC(557782bc) SHA1(1546a999ab97c380dc87f6c95d5687722206740d) )
  	ROM_LOAD16_BYTE( "epr15613.31", 0x000001, 0x080000, CRC(14bbb235) SHA1(8dbfec5fb1d7a695acbb2fc0e78e4bdf76eb8d9d) )
  	ROM_LOAD16_BYTE( "mpr15616.34", 0x100000, 0x080000, CRC(17b80202) SHA1(f47bf2aa0c5972647438619b8453c7dede5c422f) )
  	ROM_LOAD16_BYTE( "mpr15615.33", 0x100001, 0x080000, CRC(36a88bd4) SHA1(cc7f6a947d1b79bb86957c43035b53d6d2bcfa28) )
  
  	ROM_REGION( 0x040000, "upd", 0 )
  	ROM_LOAD( "epr15617.4", 0x000000, 0x040000, CRC(338324a1) SHA1(79e2782d0d4764dd723886f846c852a6f6c1fb64) )
  ROM_END
  
  ROM_START( tantrkor ) /* Tant-R (Puzzle & Action) (Korea) (c)1993 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	/* strange names, but this is what was printed on the (original) chips */
  	ROM_LOAD16_BYTE( "m15592b.32", 0x000000, 0x080000, CRC(7efe26b3) SHA1(958420b9b400eafe392745af90bff729463427c7) )
  	ROM_LOAD16_BYTE( "m15592b.31", 0x000001, 0x080000, CRC(af5a860f) SHA1(cb0011f420721d035e9f0e43bb72cf286982fd32) )
  	ROM_LOAD16_BYTE( "m15992b.34", 0x100000, 0x080000, CRC(6282a5d4) SHA1(9220e119e79d969d7d70e8a25c75dd3d9bc340ae) )
  	ROM_LOAD16_BYTE( "m15592b.33", 0x100001, 0x080000, CRC(82d78413) SHA1(9ff9c2b1632e280444965110bab90c0fc98cd6da) )
  
  	ROM_REGION( 0x040000, "upd", 0 )
  	ROM_LOAD( "epr15617.4", 0x000000, 0x040000, CRC(338324a1) SHA1(79e2782d0d4764dd723886f846c852a6f6c1fb64) )
  ROM_END
  
  ROM_START( tantrbl ) /* Tant-R (Puzzle & Action) (Bootleg)  (c)1992 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "pa_e10.bin",  0x000000, 0x080000, CRC(6c3f711f) SHA1(55aa2d50422134b95d9a7c5cbdc453b207b91b4c) )
  	ROM_LOAD16_BYTE( "pa_f10.bin",  0x000001, 0x080000, CRC(75526786) SHA1(8f5aa7f6918b71a79e6fca18194beec2aef15844) )
  	ROM_LOAD16_BYTE( "mpr15616.34", 0x100000, 0x080000, CRC(17b80202) SHA1(f47bf2aa0c5972647438619b8453c7dede5c422f) )
  	ROM_LOAD16_BYTE( "mpr15615.33", 0x100001, 0x080000, CRC(36a88bd4) SHA1(cc7f6a947d1b79bb86957c43035b53d6d2bcfa28) )
  
  	ROM_REGION( 0x040000, "upd", 0 )
  	ROM_LOAD( "pa_e03.bin", 0x000000, 0x020000, CRC(72918c58) SHA1(cb42363b163727a887a0b762519c72dcdf0a6460) )
  	ROM_LOAD( "pa_e02.bin", 0x020000, 0x020000, CRC(4e85b2a3) SHA1(3f92fb931d315c5a2d6c54b3204718574928cb7b) )
  ROM_END
  
  
  ROM_START( puyo ) /* Puyo Puyo  (c)1992 Sega / Compile */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr-15198.32", 0x000000, 0x020000, CRC(9610d80c) SHA1(1ffad09d3369c1942d4db611c41bae47d08c7564) )
  	ROM_LOAD16_BYTE( "epr-15197.31", 0x000001, 0x020000, CRC(7b1f3229) SHA1(13d0905291e748973d7d17eb404a286ffb94de03) )
  	/* 0x040000 - 0x100000 Empty */
  	ROM_LOAD16_BYTE( "epr-15200.34", 0x100000, 0x020000, CRC(0a0692e5) SHA1(d4ecc5b1791a91e3b33a5d4d0dd305f1623483d9) )
  	ROM_LOAD16_BYTE( "epr-15199.33", 0x100001, 0x020000, CRC(353109b8) SHA1(92440987add3124b758e7eaa77a3a6f54ca61bb8) )
  
  	ROM_REGION( 0x020000, "upd", 0 )
  	ROM_LOAD( "epr-15196.4", 0x000000, 0x020000, CRC(79112b3b) SHA1(fc3a202e1e2ff39950d4af689b7fcca86c301805) )
  ROM_END
  
  ROM_START( puyoj ) /* Puyo Puyo  (c)1992 Sega / Compile */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr15036", 0x000000, 0x020000, CRC(5310ca1b) SHA1(dcfe2bf7476b640dfb790e8716e75b483d535e48) )
  	ROM_LOAD16_BYTE( "epr15035", 0x000001, 0x020000, CRC(bc62e400) SHA1(12bb6031574838a28889f6edb31dbb689265287c) )
  	/* 0x040000 - 0x100000 Empty */
  	ROM_LOAD16_BYTE( "epr15038", 0x100000, 0x020000, CRC(3b9eea0c) SHA1(e3e6148c1769834cc0061932eb035daa79673144) )
  	ROM_LOAD16_BYTE( "epr15037", 0x100001, 0x020000, CRC(be2f7974) SHA1(77027ced7a62f94e9fc6e8a0a4ac0c62f7ea813b) )
  
  	ROM_REGION( 0x020000, "upd", 0 )
  	ROM_LOAD( "epr15034", 0x000000, 0x020000, CRC(5688213b) SHA1(f3f234e482871ca903a782e51008f3bfed04ee63) )
  ROM_END
  
  ROM_START( puyoja ) /* Puyo Puyo (Rev A)  (c)1992 Sega / Compile */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "ep15036a.32", 0x000000, 0x020000, CRC(61b35257) SHA1(e09a7e992999befc88fc7928a478d1e2d14d7b08) )
  	ROM_LOAD16_BYTE( "ep15035a.31", 0x000001, 0x020000, CRC(dfebb6d9) SHA1(6f685729ef4660c2eba409c5236c6d2f313eef5b) )
  	/* 0x040000 - 0x100000 Empty */
  	ROM_LOAD16_BYTE( "epr15038",    0x100000, 0x020000, CRC(3b9eea0c) SHA1(e3e6148c1769834cc0061932eb035daa79673144) )
  	ROM_LOAD16_BYTE( "epr15037",    0x100001, 0x020000, CRC(be2f7974) SHA1(77027ced7a62f94e9fc6e8a0a4ac0c62f7ea813b) )
  
  	ROM_REGION( 0x020000, "upd", 0 )
  	ROM_LOAD( "epr15034", 0x000000, 0x020000, CRC(5688213b) SHA1(f3f234e482871ca903a782e51008f3bfed04ee63) )
  ROM_END
  
  ROM_START( puyobl ) /* Puyo Puyo  (c)1992 Sega / Compile  Bootleg */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "puyopuyb.4bo", 0x000000, 0x020000, CRC(89ea4d33) SHA1(bef9d011524e71c072d309f6da3c2ebc38878e0e) )
  	ROM_LOAD16_BYTE( "puyopuyb.3bo", 0x000001, 0x020000, CRC(c002e545) SHA1(7a59ac764d60e9955830d9617b0bd122b44e7b2f) )
  	/* 0x040000 - 0x100000 Empty */
  	ROM_LOAD16_BYTE( "puyopuyb.6bo", 0x100000, 0x020000, CRC(0a0692e5) SHA1(d4ecc5b1791a91e3b33a5d4d0dd305f1623483d9) )
  	ROM_LOAD16_BYTE( "puyopuyb.5bo", 0x100001, 0x020000, CRC(353109b8) SHA1(92440987add3124b758e7eaa77a3a6f54ca61bb8) )
  
  	ROM_REGION( 0x020000, "upd", 0 )
  	ROM_LOAD( "puyopuyb.abo", 0x000000, 0x020000, CRC(79112b3b) SHA1(fc3a202e1e2ff39950d4af689b7fcca86c301805) )
  ROM_END
  
  ROM_START( ichir ) /* Ichident-R (Puzzle & Action 2)  (c)1994 Sega (World) */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "pa2_32.bin", 0x000000, 0x080000, CRC(7ba0c025) SHA1(855e9bb2a20c6f51b26381233c57c26aa96ad1f6) )
  	ROM_LOAD16_BYTE( "pa2_31.bin", 0x000001, 0x080000, CRC(5f86e5cc) SHA1(44e201de00dfbf7c66d0e0d40d17b162c6f0625b) )
  	ROM_LOAD16_BYTE( "epr16888",   0x100000, 0x080000, CRC(85d73722) SHA1(7ebe81b4d6c89f87f60200a3a8cddb07d581adef) )
  	ROM_LOAD16_BYTE( "epr16887",   0x100001, 0x080000, CRC(bc3bbf25) SHA1(e760ad400bc183b38e9787d88c8ac084fbe2ae21) )
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "pa2_02.bin", 0x000000, 0x080000, CRC(fc7b0da5) SHA1(46770aa7e19b4f8a183be3f433c48ad677b552b1) )
  ROM_END
  
  ROM_START( ichirk ) /* Ichident-R (Puzzle & Action 2)  (c)1994 Sega (Korea) */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	/* Again the part numbers are quite strange for the Korean verison */
  	ROM_LOAD16_BYTE( "epr_ichi.32", 0x000000, 0x080000, CRC(804dea11) SHA1(40bf8cbd40969a5880df10914252b7f64d5ce8e9) )
  	ROM_LOAD16_BYTE( "epr_ichi.31", 0x000001, 0x080000, CRC(92452353) SHA1(d2e1da5b139965611cd8d707d23396b5d4c07d12) )
  	ROM_LOAD16_BYTE( "epr16888",   0x100000, 0x080000, CRC(85d73722) SHA1(7ebe81b4d6c89f87f60200a3a8cddb07d581adef) )  // m17235a.34
  	ROM_LOAD16_BYTE( "epr16887",   0x100001, 0x080000, CRC(bc3bbf25) SHA1(e760ad400bc183b38e9787d88c8ac084fbe2ae21) )  // m17220a.33
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "pa2_02.bin", 0x000000, 0x080000, CRC(fc7b0da5) SHA1(46770aa7e19b4f8a183be3f433c48ad677b552b1) ) // m17220a.4
  ROM_END
  
  ROM_START( ichirj ) /* Ichident-R (Puzzle & Action 2)  (c)1994 Sega (Japan) */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr16886", 0x000000, 0x080000, CRC(38208e28) SHA1(07fc634bdf2d3e25274c9c374b3506dec765114c) )
  	ROM_LOAD16_BYTE( "epr16885", 0x000001, 0x080000, CRC(1ce4e837) SHA1(16600600e12e3f35e3da89524f7f51f019b5ad17) )
  	ROM_LOAD16_BYTE( "epr16888", 0x100000, 0x080000, CRC(85d73722) SHA1(7ebe81b4d6c89f87f60200a3a8cddb07d581adef) )
  	ROM_LOAD16_BYTE( "epr16887", 0x100001, 0x080000, CRC(bc3bbf25) SHA1(e760ad400bc183b38e9787d88c8ac084fbe2ae21) )
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "epr16884", 0x000000, 0x080000, CRC(fd9dcdd6) SHA1(b8053a2e68072e7664ffc3c53f983f3ba72a892b) )
  ROM_END
  
  ROM_START( stkclmns ) /* Stack Columns  (c)1994 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr16874.32", 0x000000, 0x080000, CRC(d78a871c) SHA1(7efcd5d07b089442be5170a3cf9e09579527252f) )
  	ROM_LOAD16_BYTE( "epr16873.31", 0x000001, 0x080000, CRC(1def1da4) SHA1(da534a971b40277b2d58ef22c07ca468250d23ca) )
  	ROM_LOAD16_BYTE( "mpr16797.34", 0x100000, 0x080000, CRC(b28e9bd5) SHA1(227eb591d10c9dbc52b35954ebd322e2a4451df2) )
  	ROM_LOAD16_BYTE( "mpr16796.33", 0x100001, 0x080000, CRC(ec7de52d) SHA1(85bc48cef15e615ad9059500808d17916c854a87) )
  
  	ROM_REGION( 0x020000, "upd", 0 )
  	ROM_LOAD( "epr16793.4", 0x000000, 0x020000, CRC(ebb2d057) SHA1(4a19ee5d71e4aabe7d9b9b968ab5ee4bc6262aad) )
  ROM_END
  
  ROM_START( stkclmnsj ) /* Stack Columns  (c)1994 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr16795.32", 0x000000, 0x080000, CRC(b478fd02) SHA1(aaf9d9f9f4dc900b4e8ff6f258f26e782e5c3166) )
  	ROM_LOAD16_BYTE( "epr16794.31", 0x000001, 0x080000, CRC(6d0e8c56) SHA1(8f98d9fd98a1faa70b173cfd72f15102d11e79ae) )
  	ROM_LOAD16_BYTE( "mpr16797.34", 0x100000, 0x080000, CRC(b28e9bd5) SHA1(227eb591d10c9dbc52b35954ebd322e2a4451df2) )
  	ROM_LOAD16_BYTE( "mpr16796.33", 0x100001, 0x080000, CRC(ec7de52d) SHA1(85bc48cef15e615ad9059500808d17916c854a87) )
  
  	ROM_REGION( 0x020000, "upd", 0 )
  	ROM_LOAD( "epr16793.4", 0x000000, 0x020000, CRC(ebb2d057) SHA1(4a19ee5d71e4aabe7d9b9b968ab5ee4bc6262aad) )
  ROM_END
  
  
  ROM_START( puyopuy2 ) /* Puyo Puyo 2  (c)1994 Compile */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr17241.32", 0x000000, 0x080000, CRC(1cad1149) SHA1(77fb0482fa35e615c0bed65f4d7f4dd89b241f23) )
  	ROM_LOAD16_BYTE( "epr17240.31", 0x000001, 0x080000, CRC(beecf96d) SHA1(c2bdad4b6184c11f81f2a5db409cb4ea186205a7) )
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "epr17239.4", 0x000000, 0x080000, CRC(020ff6ef) SHA1(6095b8277b47a6fd7a9721f15a70ae5bf6be9b1a) )
  ROM_END
  
  
  ROM_START( potopoto ) /* Poto Poto  (c)1994 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr16662", 0x000000, 0x040000, CRC(bbd305d6) SHA1(1a4f4869fefac188c69bc67df0b625e43a0c3f1f) )
  	ROM_LOAD16_BYTE( "epr16661", 0x000001, 0x040000, CRC(5a7d14f4) SHA1(a615b5f481256366db7b1c6302a8dcb69708102b) )
  
  	ROM_REGION( 0x040000, "upd", 0 )
  	ROM_LOAD( "epr16660", 0x000000, 0x040000, CRC(8251c61c) SHA1(03eef3aa0bdde2c1d93128648f54fd69278d85dd) )
  ROM_END
  
  
  ROM_START( zunkyou ) /* Zunzunkyou No Yabou  (c)1994 Sega */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr16812.32", 0x000000, 0x080000, CRC(eb088fb0) SHA1(69089a3516ad50f35e81971ef3c33eb3f5d52374) )
  	ROM_LOAD16_BYTE( "epr16811.31", 0x000001, 0x080000, CRC(9ac7035b) SHA1(1803ffbadc1213e04646d483e27da1591e22cd06) )
  	ROM_LOAD16_BYTE( "epr16814.34", 0x100000, 0x080000, CRC(821b3b77) SHA1(c45c7393a792ce8306a52f83f8ed8f6b0d7c11e9) )
  	ROM_LOAD16_BYTE( "epr16813.33", 0x100001, 0x080000, CRC(3cba9e8f) SHA1(208819bc1a205eaab089542afc7a59f69ce5bb81) )
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "epr16810.4", 0x000000, 0x080000, CRC(d542f0fe) SHA1(23ea50110dfe1cd9f286a535d15e0c3bcba73b00) )
  ROM_END
  
  
  ROM_START( pclubj ) /* Print Club (c)1995 Atlus */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "epr18171.32", 0x000000, 0x080000, CRC(6c8eb8e2) SHA1(bbd885a83269524215c1d8470544086e3e82c05c) )
  	ROM_LOAD16_BYTE( "epr18170.31", 0x000001, 0x080000, CRC(72c631e6) SHA1(77c4ed793db6cb75346998f38a637db64fd258bd) )
  	ROM_LOAD16_BYTE( "epr18173.34", 0x100000, 0x080000, CRC(9809dc72) SHA1(6dbe6b7d4e525aa9b6174f8dc5aee12a5e00a009) )
  	ROM_LOAD16_BYTE( "epr18172.33", 0x100001, 0x080000, CRC(c61d819b) SHA1(4813ed3161e16099f482e0cf8df3cbe6c01c619c) )
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "epr18169.4", 0x000000, 0x080000, CRC(5c00ccfb) SHA1(d043ffa6528bb9b76774c96df4edf8222a1878a4) )
  ROM_END
  
  
  ROM_START( pclubjv2 ) /* Print Club vol.2 (c)1995 Atlus */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "p2jwn.u32", 0x000000, 0x080000, CRC(dfc0f7f1) SHA1(d2399f3ff05006590903f943cd77a9c709b9b5b1) )
  	ROM_LOAD16_BYTE( "p2jwn.u31", 0x000001, 0x080000, CRC(6ab4c694) SHA1(d8cfaa1a49e86842079c6e3800a95c5afaf76ab6) )
  	ROM_LOAD16_BYTE( "p2jwn.u34", 0x100000, 0x080000, CRC(854fd456) SHA1(eff7413a7acd8ee37cb73bc8dfd4f4ae53c04836) )
  	ROM_LOAD16_BYTE( "p2jwn.u33", 0x100001, 0x080000, CRC(64428a69) SHA1(e2c5ead4b35db76fda1db03adcd020bde5ca1dd2) )
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "epr18169.4", 0x000000, 0x080000, CRC(5c00ccfb) SHA1(d043ffa6528bb9b76774c96df4edf8222a1878a4) )
  ROM_END
  
  
  ROM_START( pclubjv4 ) /* Print Club vol.4 (c)1996 Atlus */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "p4jsm.u32", 0x000000, 0x080000, CRC(36ff5f80) SHA1(33872aa00c8ca3f54dd7503a44562fbdad92df7d) )
  	ROM_LOAD16_BYTE( "p4jsm.u31", 0x000001, 0x080000, CRC(f3c021ad) SHA1(34792d861265b609d5022955eb7d2f471c63dfb8) )
  	ROM_LOAD16_BYTE( "p4jsm.u34", 0x100000, 0x080000, CRC(d0fd4b33) SHA1(c272404f09bdb6596740ab150eb158cc22cc9aa6) )
  	ROM_LOAD16_BYTE( "p4jsm.u33", 0x100001, 0x080000, CRC(ec667875) SHA1(d235a1d8dfa90e1c638e1f079ce528f61450e1f0) )
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "epr18169.4", 0x000000, 0x080000, CRC(5c00ccfb) SHA1(d043ffa6528bb9b76774c96df4edf8222a1878a4) )
  ROM_END
  
  
  ROM_START( pclubjv5 ) /* Print Club vol.5 (c)1996 Atlus */
  	ROM_REGION( 0x200000, "maincpu", 0 )
  	ROM_LOAD16_BYTE( "p5jat.u32", 0x000000, 0x080000, CRC(72220e69) SHA1(615de759d73469841987fb028eaf5d5598c32553) )
  	ROM_LOAD16_BYTE( "p5jat.u31", 0x000001, 0x080000, CRC(06d83fde) SHA1(dc68375ccb16cde7900eb05f702bc15e7e702ea5) )
  	ROM_LOAD16_BYTE( "p5jat.u34", 0x100000, 0x080000, CRC(b172ab58) SHA1(47a70bd678f6c4dafe70b83bd3db678cf44de48b) )
  	ROM_LOAD16_BYTE( "p5jat.u33", 0x100001, 0x080000, CRC(ba38ec50) SHA1(666fdba56d8a4dab041015c5e8102305b491d293) )
  
  	ROM_REGION( 0x080000, "upd", 0 )
  	ROM_LOAD( "epr18169.4", 0x000000, 0x080000, CRC(5c00ccfb) SHA1(d043ffa6528bb9b76774c96df4edf8222a1878a4) )
  ROM_END
  
  
  
  /******************************************************************************
      Machine Init Functions
  *******************************************************************************
  
  All of the Sega C/C2 games apart from Bloxeed used a protection chip.
  The games contain various checks which make sure this protection chip is
  present and returning the expected values. It appears that different
  tables are used for Japanese vs. English variants of some games
  (Puzzle & Action 2) but not others (Columns).
  
  
  The basic operation in the EPM5032 macrocell (that is, without using the expander
  products) is:
  
  out = x1 XOR (x2 OR x3 OR x4)
  
  where x1, x2, x3, and x4 are the AND of any number of input bits. Each input can
  be inverted. The inputs come either from the external pins or from feedback from
  the output pins.
  
  Expander products (64 in total) are the NOT of the AND of any number of input bits
  (optionally inverted). It's not clear whether the I/O feedback is available to
  the expander or not. Looking at bit 1 of prot_func_tfrceac(), it would seem that
  it should be, otherwise I don't see how the formula could be computed.
  
  ******************************************************************************/
  
  static void segac2_common_init(running_machine* machine, int (*func)(int in))
  {
  	const device_config *upd = devtag_get_device(machine, "upd");
  
  	DRIVER_INIT_CALL( megadriv_c2 );
  
  	prot_func = func;
  
  	genvdp_use_cram = 0;
  	genesis_always_irq6 = 1;
  	genesis_other_hacks = 0;
  
  	if (upd != NULL)
  		memory_install_write16_device_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), upd, 0x880000, 0x880001, 0, 0x13fefe, segac2_upd7759_w);
  }
  
  
  
  /* 317-0149 */
  static int prot_func_columns(int in)
  {
  	int const b0 = BIT( in,2) ^ ((BIT(~in,0) && BIT( in,7)) || (BIT( in,4) && BIT( in,6)));
  	int const b1 = BIT(~in,0) ^ (BIT( in,2) || (BIT( in,5) && BIT(~in,6) && BIT( in,7)));
  	int const b2 = BIT( in,3) ^ ((BIT( in,0) && BIT( in,1)) || (BIT( in,4) && BIT( in,6)));
  	int const b3 = BIT( in,1) ^ ((BIT( in,0) && BIT( in,1)) || (BIT( in,4) && BIT( in,5)) || (BIT(~in,6) && BIT( in,7)));	// 1 repeated
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0160 */
  static int prot_func_columns2(int in)
  {
  	int const b0 =  BIT( in,2) ^ (BIT( in,1) || (BIT( in,4) && BIT( in,5)));
  	int const b1 = (BIT( in,0) && BIT( in,3) && BIT( in,4)) ^ (BIT( in,6) || (BIT( in,5) && BIT( in,7)));
  	int const b2 = (BIT( in,3) && BIT(~in,2) && BIT( in,4)) ^ (BIT( in,5) || (BIT( in,0) && BIT( in,1)) || (BIT( in,4) && BIT( in,6)));	// 4 repeated
  	int const b3 = (BIT( in,1) && BIT( in,0) && BIT( in,2)) ^ ((BIT( in,4) && BIT(~in,6)) || (BIT( in,6) && BIT( in,7)));	// 6 repeated
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0172 */
  static int prot_func_tfrceac(int in)
  {
  	int const b0 = BIT(~in,2) ^ ((BIT( in,0) && BIT(~in,7)) || (BIT( in,3) && BIT( in,4)));
  	int const b1 = (BIT( in,4) && BIT(~in,5) && BIT( in,7)) ^ ((BIT(~in,0) || BIT(~in,3)) && (BIT(~in,6) || BIT(~in,7)));	// not in the form x1 XOR (x2 OR x3 OR x4)
  	int const b2 = BIT( in,2) ^ ((BIT( in,4) && BIT(~in,5) && BIT( in,7)) || (BIT(~in,1) && BIT( in,6)));
  	int const b3 = BIT( in,0) ^ ((BIT( in,1) && BIT( in,4) && BIT( in,6)) || (BIT( in,1) && BIT( in,4) && BIT( in,7)));	// 1,4 repeated
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0173 */
  static int prot_func_borench(int in)
  {
  	int const b0 = (BIT( in,1) && BIT( in,2) && BIT( in,3) && BIT( in,7))   ^ (BIT( in,5) || (BIT(~in,0) && BIT(~in,4)));
  	int const b1 = (BIT(~in,2) && BIT( in,3) && BIT( in,5))                 ^ (BIT( in,1) || (BIT( in,0) && BIT(~in,4)));
  	int const b2 = (BIT( in,1) && BIT(~in,4) && BIT(~in,6))                 ^ (BIT( in,2) || BIT( in,3) || (BIT( in,5) && BIT( in,7)));
  	int const b3 = (BIT(~in,0) && BIT( in,5) && (BIT( in,6) || BIT( in,7))) ^ (BIT( in,1) || (BIT( in,3) && BIT( in,4)));	// not in the form x1 XOR (x2 OR x3 OR x4)
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0178 */
  static int prot_func_ribbit(int in)
  {
  	int const b0 = (BIT( in,0) && BIT( in,4)) ^ ((BIT( in,1) && BIT( in,2)) || BIT( in,3) || BIT(~in,5));
  	int const b1 = (BIT( in,1) && BIT( in,5)) ^ ((BIT( in,2) && BIT( in,3)) || BIT( in,0) || BIT(~in,6));
  	int const b2 = (BIT( in,2) && BIT( in,7)) ^ ((BIT( in,3) && BIT( in,0)) || BIT(~in,1) || BIT( in,7));
  	int const b3 = (BIT( in,3) && BIT( in,6)) ^ ((BIT( in,0) && BIT( in,1)) || BIT(~in,2) || BIT( in,4));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0193 */
  static int prot_func_twinsqua(int in)
  {
  	int const b0 = (BIT( in,2) && BIT(~in,5)) ^ (BIT( in,3) || BIT(~in,4));
  	int const b1 = (BIT( in,0) && BIT(~in,2) && BIT( in,4)) ^ (BIT(~in,0) || BIT(~in,4) || BIT(~in,6));	// 0,4 repeated
  	int const b2 = (BIT( in,3) && BIT(~in,5)) ^ (BIT( in,4) && BIT( in,7));
  	int const b3 =  BIT( in,1) ^ ((BIT(~in,3) && BIT(~in,6)) || (BIT( in,4) && BIT(~in,6)) || (BIT(~in,1) && BIT( in,3) && BIT(~in,4)));	// 1,3,4,6 repeated
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0203 */
  static int prot_func_puyo(int in)
  {
  	int const b0 = (BIT(~in,3) && BIT( in,7)) ^ ((BIT(~in,0) && BIT(~in,1)) || (BIT(~in,1) && BIT(~in,4)));	// 1 repeated
  	int const b1 = (BIT( in,3) && BIT( in,5)) ^ (BIT(~in,2) || BIT( in,4) || BIT( in,6));
  	int const b2 = (BIT(~in,2) && BIT(~in,5)) ^ (BIT( in,1) || BIT(~in,3) || BIT(~in,6));
  	int const b3 =  BIT( in,1)                ^ ((BIT( in,0) && BIT( in,3) && BIT( in,7)) || BIT( in,4));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0211 */
  static int prot_func_tantr(int in)
  {
  	int const b0 = (BIT( in,0) && BIT( in,4)) ^ ( BIT( in,5) || BIT(~in,6)  || (BIT(~in,3) && BIT( in,7)));
  	int const b1 = (BIT( in,2) && BIT( in,6)) ^ ((BIT( in,1) && BIT( in,5)) || (BIT( in,3) && BIT( in,4)));
  	int const b2 = (BIT(~in,0) && BIT( in,2)) ^ ( BIT( in,4) || BIT( in,7)  || (BIT( in,1) && BIT(~in,5)));
  	int const b3 = (BIT(~in,2) && BIT( in,7)) ^ ( BIT(~in,0) || BIT( in,1)  || (BIT( in,3) && BIT( in,6)));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-???? */
  static int prot_func_tantrkor(int in)
  {
  	int const b0 = (BIT(~in,1) && BIT(~in,7)) ^ (BIT(~in,2) && BIT(~in,4));
  	int const b1 = (BIT( in,2) && BIT( in,6)) ^ (BIT( in,0) && BIT( in,1));
  	int const b2 = (BIT(~in,3) && BIT(~in,6)) ^ (BIT( in,1) || BIT(~in,4));
  	int const b3 = (BIT(~in,0) && BIT(~in,2)) ^ (BIT( in,5) && BIT(~in,6));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0218 */
  static int prot_func_potopoto(int in)
  {
  	int const b0 = (BIT(~in,2) && BIT(~in,4)) ^ (BIT(~in,1) && BIT( in,3));
  	int const b1 = (BIT( in,0) && BIT( in,5)) ^ (BIT( in,2) || BIT(~in,7));
  	int const b2 = (BIT( in,0) && BIT( in,6)) ^ (BIT(~in,1) && BIT( in,7));
  	int const b3 = (BIT( in,0) && BIT(~in,7)) ^ (BIT(~in,1) && BIT(~in,6));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0219 */
  static int prot_func_stkclmnj(int in)
  {
  	int const b0 = (BIT( in,1) && BIT( in,4)) ^ (BIT( in,5) && BIT( in,2));
  	int const b1 = (BIT(~in,2) && BIT( in,6)) ^ (BIT(~in,5) && BIT( in,7));
  	int const b2 = (BIT(~in,3) && BIT( in,6)) ^ (BIT(~in,5) && BIT(~in,1));
  	int const b3 = (BIT(~in,3) && BIT( in,5)) ^ (BIT(~in,6) || BIT(~in,7));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0223 */
  static int prot_func_stkclmns(int in)
  {
  	int const b0 = (BIT( in,2) && BIT( in,4)) ^ (BIT( in,1) || BIT(~in,3));
  	int const b1 = (BIT( in,0) && BIT( in,5)) ^ (BIT( in,2) && BIT( in,7));
  	int const b2 = (BIT( in,0) && BIT(~in,6)) ^ (BIT( in,1) && BIT(~in,7));
  	int const b3 = (BIT( in,0) && BIT(~in,7)) ^ (BIT(~in,1) && BIT( in,6));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0224 */
  static int prot_func_ichirj(int in)
  {
  	int const b0 = (BIT( in,2) && BIT( in,4)) ^ (BIT(~in,5) && BIT(~in,2));
  	int const b1 = (BIT( in,2) && BIT(~in,6)) ^ (BIT( in,5) && BIT( in,7));
  	int const b2 = (BIT(~in,3) && BIT( in,6)) ^ (BIT(~in,5) && BIT(~in,1));
  	int const b3 = (BIT(~in,1) && BIT( in,5)) ^ (BIT(~in,5) && BIT( in,7));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-???? */
  static int prot_func_ichir(int in)
  {
  	int const b0 = (BIT(~in,2) && BIT( in,4)) ^ (BIT( in,5) && BIT(~in,2));
  	int const b1 = (BIT( in,1) && BIT( in,6)) ^ (BIT( in,5) || BIT( in,7));
  	int const b2 = (BIT(~in,3) && BIT( in,6)) ^ (BIT(~in,5) && BIT(~in,3));
  	int const b3 = (BIT( in,0) && BIT(~in,5)) ^ (BIT( in,5) && BIT( in,7));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-???? */
  static int prot_func_ichirk(int in)
  {
  	int const b0 = (BIT(~in,2) && BIT( in,4)) ^ (BIT( in,5) && BIT(~in,1));
  	int const b1 = (BIT( in,0) && BIT( in,6)) ^ (BIT( in,5) && BIT( in,4));
  	int const b2 = (BIT(~in,1) && BIT(~in,6)) ^ (BIT(~in,5) && BIT( in,3));
  	int const b3 = (BIT( in,1) && BIT( in,5)) ^ (BIT( in,6) && BIT( in,7));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  /* 317-0228 */
  static int prot_func_puyopuy2(int in)
  {
  	int const b0 = (BIT(~in,0) && BIT(~in,7)) ^ (BIT( in,1) || BIT(~in,4) || BIT(~in,6));
  	int const b1 = (BIT( in,0) && BIT(~in,6)) ^ (BIT( in,3) && BIT( in,5));
  	int const b2 = (BIT(~in,4) && BIT(~in,7)) ^ (BIT( in,0) || BIT(~in,6));
  	int const b3 = (BIT(~in,1) && BIT( in,4)) ^ (BIT( in,2) && BIT(~in,3));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  static int prot_func_zunkyou(int in)
  {
  	int const b0 = (BIT(~in,1) && BIT( in,6)) ^ (BIT(~in,5) && BIT( in,7));
  	int const b1 = (BIT( in,0) && BIT(~in,5)) ^ (BIT(~in,3) || BIT( in,4));
  	int const b2 = (BIT( in,2) && BIT(~in,3)) ^ (BIT( in,4) && BIT(~in,5));
  	int const b3 = (BIT( in,0) && BIT(~in,4)) ^ (BIT(~in,2) && BIT(~in,6));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  static int prot_func_pclub(int in)
  {
  	return 0xf;
  }
  
  static int prot_func_pclubjv2(int in)
  {
  	int const b0 = (BIT( in,3) && BIT(~in,4)) ^ ((BIT(~in,1) && BIT(~in,7)) || BIT( in,6));
  	int const b1 = (BIT( in,0) && BIT( in,5)) ^  (BIT( in,2) && BIT(~in,6));
  	int const b2 = (BIT(~in,1) && BIT( in,6)) ^  (BIT( in,3) || BIT(~in,5)  || BIT(~in,1));	// 1 repeated
  	int const b3 = (BIT(~in,2) && BIT(~in,7)) ^  (BIT(~in,0) || BIT(~in,4));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  static int prot_func_pclubjv4(int in)
  {
  	int const b0 = (BIT(~in,2) && BIT( in,4)) ^ (BIT( in,1) && BIT(~in,6) && BIT(~in,3));
  	int const b1 = (BIT(~in,3) && BIT(~in,4)) ^ (BIT( in,0) && BIT( in,5) && BIT(~in,6));
  	int const b2 =  BIT(~in,0)                ^ (BIT( in,3) && BIT( in,4));
  	int const b3 = (BIT(~in,1) && BIT( in,7)) ^ (BIT( in,5) && BIT(~in,7));	// 7 repeated
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  static int prot_func_pclubjv5(int in)
  {
  	int const b0 = (BIT(~in,1) && BIT( in,5)) ^ (BIT(~in,2) && BIT(~in,6));
  	int const b1 = (BIT(~in,0) && BIT( in,4)) ^ (BIT(~in,3) && BIT(~in,7));
  	int const b2 = (BIT(~in,3) && BIT( in,7)) ^ (BIT(~in,0) || BIT(~in,4));
  	int const b3 = (BIT(~in,2) && BIT( in,6)) ^ (BIT(~in,1) && BIT(~in,5));
  
  	return (b3 << 3) | (b2 << 2) | (b1 << 1) | b0;
  }
  
  
  
  static DRIVER_INIT( c2boot )
  {
  	segac2_common_init(machine, NULL);
  }
  
  static DRIVER_INIT( bloxeedc )
  {
  	segac2_common_init(machine, NULL);
  }
  
  static DRIVER_INIT( columns )
  {
  	segac2_common_init(machine, prot_func_columns);
  }
  
  static DRIVER_INIT( columns2 )
  {
  	segac2_common_init(machine, prot_func_columns2);
  }
  
  static DRIVER_INIT( tfrceac )
  {
  	segac2_common_init(machine, prot_func_tfrceac);
  }
  
  static DRIVER_INIT( tfrceacb )
  {
  	/* disable the palette bank switching from the protection chip */
  	segac2_common_init(machine, NULL);
  	memory_install_write16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x800000, 0x800001, 0, 0, (write16_space_func)SMH_NOP);
  }
  
  static DRIVER_INIT( borench )
  {
  	segac2_common_init(machine, prot_func_borench);
  }
  
  static DRIVER_INIT( twinsqua )
  {
  	segac2_common_init(machine, prot_func_twinsqua);
  }
  
  static DRIVER_INIT( ribbit )
  {
  	segac2_common_init(machine, prot_func_ribbit);
  }
  
  static DRIVER_INIT( puyo )
  {
  	segac2_common_init(machine, prot_func_puyo);
  }
  
  static DRIVER_INIT( tantr )
  {
  	segac2_common_init(machine, prot_func_tantr);
  }
  
  static DRIVER_INIT( tantrkor )
  {
  	segac2_common_init(machine, prot_func_tantrkor);
  }
  
  static DRIVER_INIT( potopoto )
  {
  	segac2_common_init(machine, prot_func_potopoto);
  }
  
  static DRIVER_INIT( stkclmns )
  {
  	segac2_common_init(machine, prot_func_stkclmns);
  }
  
  static DRIVER_INIT( stkclmnj )
  {
  	segac2_common_init(machine, prot_func_stkclmnj);
  }
  
  static DRIVER_INIT( ichir )
  {
  	segac2_common_init(machine, prot_func_ichir);
  }
  
  static DRIVER_INIT( ichirk )
  {
  	segac2_common_init(machine, prot_func_ichirk);
  }
  
  static DRIVER_INIT( ichirj )
  {
  	segac2_common_init(machine, prot_func_ichirj);
  }
  
  static DRIVER_INIT( ichirjbl )
  {
  
  	/* when did this actually work? - the protection is patched but the new check fails? */
  	UINT16 *rom = (UINT16 *)memory_region(machine, "maincpu");
  	rom[0x390/2] = 0x6600;
  
  	segac2_common_init(machine, NULL);
  }
  
  static DRIVER_INIT( puyopuy2 )
  {
  	segac2_common_init(machine, prot_func_puyopuy2);
  }
  
  static DRIVER_INIT( zunkyou )
  {
  	segac2_common_init(machine, prot_func_zunkyou);
  }
  
  
  static DRIVER_INIT( pclub )
  {
  	segac2_common_init(machine, prot_func_pclub);
  
  	memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880120, 0x880121, 0, 0, printer_r );/*Print Club Vol.1*/
  	memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880124, 0x880125, 0, 0, printer_r );/*Print Club Vol.2*/
  	memory_install_write16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880124, 0x880125, 0, 0, print_club_camera_w);
  }
  
  static DRIVER_INIT( pclubjv2 )
  {
  	segac2_common_init(machine, prot_func_pclubjv2);
  
  	memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880120, 0x880121, 0, 0, printer_r );/*Print Club Vol.1*/
  	memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880124, 0x880125, 0, 0, printer_r );/*Print Club Vol.2*/
  	memory_install_write16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880124, 0x880125, 0, 0, print_club_camera_w);
  }
  
  static DRIVER_INIT( pclubjv4 )
  {
  	segac2_common_init(machine, prot_func_pclubjv4);
  
  	memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880120, 0x880121, 0, 0, printer_r );/*Print Club Vol.1*/
  	memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880124, 0x880125, 0, 0, printer_r );/*Print Club Vol.2*/
  	memory_install_write16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880124, 0x880125, 0, 0, print_club_camera_w);
  }
  
  static DRIVER_INIT( pclubjv5 )
  {
  	segac2_common_init(machine, prot_func_pclubjv5);
  
  	memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880120, 0x880121, 0, 0, printer_r );/*Print Club Vol.1*/
  	memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880124, 0x880125, 0, 0, printer_r );/*Print Club Vol.2*/
  	memory_install_write16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x880124, 0x880125, 0, 0, print_club_camera_w);
  }
  
  
  
  /******************************************************************************
      Game Drivers
  *******************************************************************************
  
      These cover all the above games.
  
      Dates are all verified correct from Ingame display, some of the Titles
      such as Ichidant-R, Tant-R might be slightly incorrect as I've seen the
      games refered to by other names such as Ichident-R, Tanto-R, Tanto Arle
      etc.
  
      bloxeedc is set as as clone of bloxeed as it is the same game but running
      on a different piece of hardware.  The parent 'bloxeed' is a system18 game
      and does not currently work due to it being encrypted.
  
  ******************************************************************************/
  
  /* System C Games */
  GAME( 1989, bloxeedc, bloxeed,  segac,    bloxeedc, bloxeedc, ROT0, "Sega / Elorg",           "Bloxeed (World, C System)", 0 )
  GAME( 1989, bloxeedu, bloxeed,  segac,    bloxeedc, bloxeedc, ROT0, "Sega / Elorg",           "Bloxeed (US, C System)", 0 )
  GAME( 1990, columns,  0,        segac,    columns,  columns,  ROT0, "Sega",                   "Columns (World)", 0 )
  GAME( 1990, columnsu, columns,  segac,    columnsu, columns,  ROT0, "Sega",                   "Columns (US, cocktail)", 0 ) // has cocktail mode dsw
  GAME( 1990, columnsj, columns,  segac,    columns,  columns,  ROT0, "Sega",                   "Columns (Japan)", 0 )
  GAME( 1990, columns2, 0,        segac,    columns2, columns2, ROT0, "Sega",                   "Columns II: The Voyage Through Time (World)", 0 )
  GAME( 1990, column2j, columns2, segac,    columns2, columns2, ROT0, "Sega",                   "Columns II: The Voyage Through Time (Japan)", 0 )
  
  /* System C-2 Games */
  GAME( 1990, tfrceac,  0,        segac2,   tfrceac,  tfrceac,  ROT0, "Sega / Technosoft",      "ThunderForce AC", 0 )
  GAME( 1990, tfrceacj, tfrceac,  segac2,   tfrceac,  tfrceac,  ROT0, "Sega / Technosoft",      "ThunderForce AC (Japan)", 0 )
  GAME( 1990, tfrceacb, tfrceac,  segac2,   tfrceac,  tfrceacb, ROT0, "bootleg",                "ThunderForce AC (bootleg)", 0 )
  GAME( 1990, borench,  0,        segac2,   borench,  borench,  ROT0, "Sega",                   "Borench", 0 )
  GAME( 1991, twinsqua, 0,        segac2,   twinsqua, twinsqua, ROT0, "Sega",                   "Twin Squash", 0 )
  GAME( 1991, ribbit,   0,        segac2,   ribbit,   ribbit,   ROT0, "Sega",                   "Ribbit!", 0 )
  GAME( 1992, puyo,     0,        segac2,   puyo,     puyo,     ROT0, "Sega / Compile",         "Puyo Puyo (World)", 0 )
  GAME( 1992, puyobl,   puyo,     segac2,   puyo,     puyo,     ROT0, "bootleg",                "Puyo Puyo (World, bootleg)", 0 )
  GAME( 1992, puyoj,    puyo,     segac2,   puyo,     puyo,     ROT0, "Sega / Compile",         "Puyo Puyo (Japan)", 0 )
  GAME( 1992, puyoja,   puyo,     segac2,   puyo,     puyo,     ROT0, "Sega / Compile",         "Puyo Puyo (Japan, Rev A)", 0 )
  GAME( 1992, tantr,    0,        segac2,   ichir,    tantr,    ROT0, "Sega",                   "Puzzle & Action: Tant-R (Japan)", 0 )
  GAME( 1993, tantrkor, tantr,    segac2,   ichir,    tantrkor, ROT0, "Sega",                   "Puzzle & Action: Tant-R (Korea)", 0 )
  GAME( 1992, tantrbl,  tantr,    segac2,   ichir,    c2boot,   ROT0, "bootleg",                "Puzzle & Action: Tant-R (Japan) (bootleg set 1)", 0 )
  GAME( 1994, tantrbl2, tantr,    segac,    ichir,    tantr,    ROT0, "bootleg",                "Puzzle & Action: Tant-R (Japan) (bootleg set 2)", 0 ) // Common bootleg in Europe, C board, no samples
  GAME( 1994, tantrbl3, tantr,    segac,    ichir,    tantr,    ROT0, "bootleg",                "Puzzle & Action: Tant-R (Japan) (bootleg set 3)", 0 ) // Common bootleg in Europe, C board, no samples
  GAME( 1994, potopoto, 0,        segac2,   potopoto, potopoto, ROT0, "Sega",                   "Poto Poto (Japan)", 0 )
  GAME( 1994, stkclmns, 0,        segac2,   stkclmns, stkclmns, ROT0, "Sega",                   "Stack Columns (World)", 0 )
  GAME( 1994, stkclmnsj,stkclmns, segac2,   stkclmns, stkclmnj, ROT0, "Sega",                   "Stack Columns (Japan)", 0 )
  GAME( 1994, ichir,    0,        segac2,   ichir,    ichir,    ROT0, "Sega",                   "Puzzle & Action: Ichidant-R (World)", 0 )
  GAME( 1994, ichirk,   ichir,    segac2,   ichir,    ichirk,   ROT0, "Sega",                   "Puzzle & Action: Ichidant-R (Korea)", 0 )
  GAME( 1994, ichirj,   ichir,    segac2,   ichir,    ichirj,   ROT0, "Sega",                   "Puzzle & Action: Ichidant-R (Japan)", 0 )
  GAME( 1994, ichirjbl, ichir,    segac,    ichir,    ichirjbl, ROT0, "bootleg",                "Puzzle & Action: Ichidant-R (Japan) (bootleg)", 0 ) // C board, no samples
  GAME( 1994, puyopuy2, 0,        segac2,   puyopuy2, puyopuy2, ROT0, "Compile (Sega license)", "Puyo Puyo 2 (Japan)", 0 )
  GAME( 1994, zunkyou,  0,        segac2,   zunkyou,  zunkyou,  ROT0, "Sega",                   "Zunzunkyou No Yabou (Japan)", 0 )
  
  /* Atlus Print Club 'Games' (C-2 Hardware, might not be possible to support them because they use camera + printer, really just put here for reference) */
  GAME( 1995, pclubj,   0,        segac2,   pclub,    pclub,    ROT0, "Atlus",                  "Print Club (Japan Vol.1)", GAME_NOT_WORKING )
  GAME( 1995, pclubjv2, pclubj,   segac2,   pclubjv2, pclubjv2, ROT0, "Atlus",                  "Print Club (Japan Vol.2)", GAME_NOT_WORKING )
  GAME( 1996, pclubjv4, pclubj,   segac2,   pclubjv2, pclubjv4, ROT0, "Atlus",                  "Print Club (Japan Vol.4)", GAME_NOT_WORKING )
  GAME( 1996, pclubjv5, pclubj,   segac2,   pclubjv2, pclubjv5, ROT0, "Atlus",                  "Print Club (Japan Vol.5)", GAME_NOT_WORKING )
  