/****************************************************************************

Operation Wolf  (c) Taito 1987
==============

David Graves, Jarek Burczynski
C-Chip emulation by Bryan McPhail

Sources:    MAME Rastan driver
            MAME Taito F2 driver
            Raine source - many thanks to Richard Bush
              and the Raine Team.

Main CPU: MC68000 uses irq 5.
Sound   : Z80 & YM2151 & MSM5205


Operation Wolf uses similar hardware to Rainbow Islands and Rastan.
The screen layout and registers and sprites appear to be identical.

Taito TC0030CMD chip labeled B20-18 (at least for the US boards)
Taito PC060HA looks like it might be a DIP28 Fujitsu MB884x chip
There are 4 socketted PALs (DIP20 type PAL16L8ACN) labeled B20-09
      through B20-12 (not read)

OSC:  Main board: 16MHz, 12MHz & 26.686MHz
     Sound board: 8MHz (Next to Z80 & YM2151)
CPU: TS68000CP8 (Rated for 8MHz)

Gun Travel
----------

Horizontal gun travel maybe could be widened to include more
of the status bar (you can shoot enemies underneath it).

To keep the input span 0-255 a multiplier (300/256 ?)
would be used.

Operation Wolf
Taito, 1987

PCB Layouts
-----------

SOUND BOARD
J1100122A (J1100122B) \ <-- minor rev, but no difference on PCB
K1100268A (K1100268B) /
K1100268A OPERATION WOLF (sticker)
|-----------------------------------------|
|X                S              8464     |
|        VR1         PC060HA     B20-07.10|
|N       MB3735       YM2151        Z80   |
|               SEIBU YM3012          8MHz|
|               HB-41                     |
|                                         |
|        VR2                              |
|        MB3735                           |
|    TL074                                |
|T       TC0060DCA                        |
|        TC0060DCA                        |
|    TL074                                |
|                                         |
|    M5205                                |
|    384kHz                               |
|    M5205                       B20-08.21|
|-----------------------------------------|
Notes:
      Z80       - clock 4.000MHz [8/2]
      YM2151    - clock 4.000MHz [8/2]
      YM3012    - 2-channel serial input floating D/A converter
      M5205     - clock 384kHz (via resonator)
      HB-41     - Seibu HB-41 ceramic module (sound/filter related)
      MB3735    - Audio power amp IC
      TL074     - Op amp
      8464      - 8kx8 SRAM
      PC060HA   - Taito PC060HA CIU custom IC (DIP28). Manufactured by Fujitsu
      B20-07.10 - 27C512 EPROM (DIP28)
      B20-08.21 - 234000 mask ROM (DIP40)
      VR1/2     - Volume pots
      S         - 30 pin flat cable joining to main board (for main board/sound board communication)
      X         - 5 pin connector for sound output (left+right speakers)
      N         - 10 pin connector for power inputs
      T         - 18-way edge connector (single sided, pins on solder side only)

      Pinouts
      -------
              X  Connector            N  Connector      T  Connector
              ------------            ------------      ------------
              1  Right Speaker (+)    1  GND            1  GND
              2  Right Speaker (-)    2  GND            2  GND
              3  Left  Speaker (+)    3  not used       3  GND
              4  not used             4  +5 Volts       4  GND
              5  Left  Speaker (-)    5  +5 Volts       5  Optical sensor input from gun
                                      6  not used       6  not used
                                      7  -5 Volts       7  not used
                                      8  +12 Volts      8  not used
                                      9  not used       9  not used
                                      10 not used       10 not used
                                                        11 not used
                                                        12 not used
                                                        13 not used
                                                        14 not used
                                                        15 +5 Volts
                                                        16 +5 Volts
                                                        17 +5 Volts
                                                        18 +5 Volts
MAIN PCB
J1100130A
K1100288A
M4300084F OPERATION WOLF (sticker)
K1100303A OPERATION WOLF (sticker)
|----------------------------------------------------|
|         SWB SWA        S      M                    |
| 12MHz                                       16MHz  |
|H               6116                       26.686MHz|
|      TC0070RGB 6116             B20-09.19 MB3771   |
|                                                    |
|                                  |-------|B20-13.13|
|                    2018 2018     |TAITO  |         |
|G     PC050CM       2018 2018     |PC080SN|         |
|                       |-------|  |-------|         |
|   B20-18.73           |TAITO  |               DIP28|
|   B20-14.72           |PC0900J|      43256  DIP28  |
| B20-12.92             |-------|          43256     |
|               DIP28      B20-03-2.30               |
|    68000      DIP28      B20-19.29  8464  8464     |
| B20-11.85     B20-05-2.40  DIP28                   |
| B20-10.84     B20-04.39    DIP28                   |
|----------------------------------------------------|
Notes:
      68000       - clock 8.000MHz [16/2]
      6116        - 2k x8 SRAM (color RAM)
      43256       - 32k x8 SRAM (tile RAM)
      8464        - 8k x8 SRAM (work RAM)
      2018        - 2k x8 SRAM (sprite RAM)
      PC080SN     - Taito custom tilemap generator IC (connected to 43256 SRAM)
      PC0900J     - Taito custom sprite generator IC (connected to 2018 SRAM)
      DIP28       - unpopulated DIP28 socket
      B20-18.73   - Taito custom C-Chip marked 'TC0030CMD, with sticker 'B20-18'
      TC0070RGB   - Taito custom ceramic module RGB mixer IC
      PC050CM     - Taito custom ceramic module (input related functions)
      MB3771      - Fujitsu MB3771 master reset IC
      S           - 30 pin flat cable connector joining to sound PCB
      M           - 4 pin connector for gun vibration motor power and grenade button
      H           - 12 pin connector for power input
      G           - 44-way edge connector
      B20-13/14   - MN234000 mask ROM
      B20-03.30   - \
      B20-19.29   -  |
      B20-04.39   -  | 27C512 EPROM
      B20-05.40   - _|
      B20-09.19   - \
      B20-10.84   -  |
      B20-11.85   -  | MMI PAL16L8ACN
      B20-12.92   - _|

      Measurements
      ------------
      XTAL1 - 26.68558MHz
      XTAL2 - 15.99965MHz
      XTAL3 - 11.9999MHz
      VSync - 60.0551Hz
      HSync - 15.6742kHz

      Pinouts
      -------
              M  Connector               H  Connector           G  Connector
              ------------               ------------           ------------
              1  BUTTON 2 (grenade)      1  GND                Solder   Parts
              2  not used                2  GND                GND  A   1  GND
              3  +12V (to motor in gun)  3  GND          VIDEO GND  B   2  RED
              4  -12V (to motor in gun)  4  GND               BLUE  C   3  GREEN
                                         5  +5 Volts      not used  D   4  SYNC
                                         6  +5 Volts      not used  E   5  not used
                                         7  +5 Volts      not used  F   6  not used
                                         8  -5 Volts      not used  H   7  not used
                                         9  +13 Volts*      COIN B  J   8  COIN A
                                         10 not used       METER B  K   9  METER A
                                         11 +12 Volts    LOCKOUT B  L  10  LOCKOUT A
                                         12 +12 Volts         TILT  M  11  SERVICE CREDIT
                                   * leave unconnected!   not used  N  12  START
                                                          not used  P  13  not used
                                                          not used  R  14  not used
                                                          not used  S  15  not used
                                                          not used  T  16  not used
                                                          not used  U  17  not used
                                                          not used  V  18  not used
                                                          not used  W  19  not used
                                                          not used  X  20  not used
                                                          not used  Y  21  BUTTON 1 (bullets)
                                                          not used  Z  22  not used



Gun board (inside gun)

J9100095A
K9100122A
|-----------|
|CN1        |
|           |
|-----------|
Notes:
      PCB contains mostly caps/resistors and three small opto-related 8-pin ICs
      CN1 - 4 pin connector joins to connector M on main board


Stephh's notes (based on the game M68000 code and some tests) :

1) 'opwolf' and 'opwolfu'

  - Region stored at 0x03fffe.w
  - Sets :
      * 'opwolf'  : region = 0x0003
      * 'opwolfu' : region = 0x0002
  - These 2 games are 100% the same, only region and gun offsets differ !
  - Coinage relies on the region (code at 0x00bea4) :
      * 0x0001 (Japan) and 0x0002 (US) use TAITO_COINAGE_JAPAN_OLD
      * 0x0003 (World) and 0x0004 (Japan, licenced to Taito America ?) use TAITO_COINAGE_WORLD
  - Gun offsets are stored at 0x03ffaf.b (Y) and 0x03ffb1.b (X);
    these values are checked via routine at 0x000b76
  - Notice screen only if region = 0x0001
  - When "Language" Dip Switch is set to Japanese, you can also select your starting level;
    however, only the 4 first levels are available ! Correct behaviour ?
  - There's code at 0x00e090 that tests contents of 0x03ffb2.w :
    if it is 0x0000, the highscore isn't displayed, but value = 0x00ff

2) 'opwolfa'

  - Region stored at 0x03fffe.w
  - Sets :
      * 'opwolfa' : region = 0x0003
  - There is only ONE byte of difference at 0x03fff5.b with 'opwolf'
    but its effect is unknown as this adress doesn't seem to be read !

3) 'opwolfb'

  - Region stored at 0x03fffe.w
  - Sets :
      * 'opwolfb' : region = 0x0003
  - Comparison with 'opwolf' :
      * gun offsets are the same (so why are they different in the INIT function ?)
      * all reference to TAITO and "Operation Wolf" have been changed or "blanked"
      * "(c) 1988 BEAR CORPORATION KOREA" / "ALL RIGHTS RESERVED"
      * ROM check test "noped" (code at 0x00bb72)
  - Notes on bootleg c-chip (similar to what is in machine/opwolf.c) :
      * always Engish language (thus the Dip Switch change to "Unused")
      * round 4 in "demo mode" instead of round 5
      * "service" button doesn't add credits (it works in the "test mode" though)
      * if you die after round 6, difficulty isn't reset for the next game


TODO
====

Need to verify Opwolf against original board: various reports
claim there are discrepancies (perhaps limitations of the fake
Z80 c-chip substitute to blame?).

There are a few unmapped writes for the sound Z80 in the log.

Unknown writes to the MSM5205 control addresses

Raine source has standard Asuka/Mofflot sprite/tile priority:
0x2000 in sprite_ctrl puts all sprites under top bg layer. But
Raine simply kludges in this value, failing to read it from a
register. So what is controlling priority.


***************************************************************************/

/* Define clocks based on actual OSC on the PCB */

#define CPU_CLOCK		(XTAL_16MHz / 2)	/* clock for 68000 */
#define SOUND_CPU_CLOCK		(XTAL_8MHz / 2)		/* clock for Z80 sound CPU */

#include "driver.h"
#include "cpu/z80/z80.h"
#include "cpu/m68000/m68000.h"
#include "taitoipt.h"
#include "video/taitoic.h"
#include "audio/taitosnd.h"
#include "sound/2151intf.h"
#include "sound/msm5205.h"
#include "includes/cchip.h"

int opwolf_region;

static UINT8 *cchip_ram;
static UINT8 adpcm_b[0x08];
static UINT8 adpcm_c[0x08];
static UINT32 adpcm_pos[2],adpcm_end[2];
static int adpcm_data[2];

static int opwolf_gun_xoffs, opwolf_gun_yoffs;

WRITE16_HANDLER( rainbow_spritectrl_w );
VIDEO_START( opwolf );
VIDEO_UPDATE( opwolf );

static READ16_HANDLER( cchip_r )
{
	return cchip_ram[offset];
}

static WRITE16_HANDLER( cchip_w )
{
	cchip_ram[offset] = data &0xff;
}

/**********************************************************
                GAME INPUTS
**********************************************************/

#define P1X_PORT_TAG     "P1X"
#define P1Y_PORT_TAG     "P1Y"

static READ16_HANDLER( opwolf_in_r )
{
	static const char *const inname[2] = { "IN0", "IN1" };
	return input_port_read(space->machine, inname[offset]);
}

static READ16_HANDLER( opwolf_dsw_r )
{
	static const char *const dswname[2] = { "DSWA", "DSWB" };
	return input_port_read(space->machine, dswname[offset]);
}

static READ16_HANDLER( opwolf_lightgun_r )
{
	int scaled;

	switch (offset)
	{
		case 0x00:	/* P1X - Have to remap 8 bit input value, into 0-319 visible range */
			scaled=(input_port_read(space->machine, P1X_PORT_TAG) * 320 ) / 256;
			return (scaled + 0x15 + opwolf_gun_xoffs);
		case 0x01:	/* P1Y */
			return (input_port_read(space->machine, P1Y_PORT_TAG) - 0x24 + opwolf_gun_yoffs);
	}

	return 0xff;
}

static READ8_HANDLER( z80_input1_r )
{
	return input_port_read(space->machine, "IN0");	/* irrelevant mirror ? */
}

static READ8_HANDLER( z80_input2_r )
{
	return input_port_read(space->machine, "IN0");	/* needed for coins */
}


/******************************************************
                SOUND
******************************************************/

static WRITE8_DEVICE_HANDLER( sound_bankswitch_w )
{
	memory_set_bank(device->machine, 10, (data-1) & 0x03);
}

/***********************************************************
             MEMORY STRUCTURES
***********************************************************/


static ADDRESS_MAP_START( opwolf_map, ADDRESS_SPACE_PROGRAM, 16 )
	AM_RANGE(0x000000, 0x03ffff) AM_ROM
	AM_RANGE(0x0f0000, 0x0f07ff) AM_MIRROR(0xf000) AM_READ(opwolf_cchip_data_r)
	AM_RANGE(0x0f0802, 0x0f0803) AM_MIRROR(0xf000) AM_READ(opwolf_cchip_status_r)
	AM_RANGE(0x0ff000, 0x0ff7ff) AM_WRITE(opwolf_cchip_data_w)
	AM_RANGE(0x0ff802, 0x0ff803) AM_WRITE(opwolf_cchip_status_w)
	AM_RANGE(0x0ffc00, 0x0ffc01) AM_WRITE(opwolf_cchip_bank_w)
	AM_RANGE(0x100000, 0x107fff) AM_RAM
	AM_RANGE(0x200000, 0x200fff) AM_RAM_WRITE(paletteram16_xxxxRRRRGGGGBBBB_word_w) AM_BASE(&paletteram16)
	AM_RANGE(0x380000, 0x380003) AM_READ(opwolf_dsw_r)			/* dip switches */
	AM_RANGE(0x380000, 0x380003) AM_WRITE(rainbow_spritectrl_w)	// usually 0x4, changes when you fire
	AM_RANGE(0x3a0000, 0x3a0003) AM_READ(opwolf_lightgun_r)		/* lightgun, read at $11e0/6 */
	AM_RANGE(0x3c0000, 0x3c0001) AM_WRITENOP					/* watchdog ?? */
	AM_RANGE(0x3e0000, 0x3e0001) AM_READNOP AM_WRITE8(taitosound_port_w, 0xff00)
	AM_RANGE(0x3e0002, 0x3e0003) AM_READWRITE8(taitosound_comm_r,taitosound_comm_w, 0xff00)
	AM_RANGE(0xc00000, 0xc0ffff) AM_READWRITE(PC080SN_word_0_r,PC080SN_word_0_w)
	AM_RANGE(0xc10000, 0xc1ffff) AM_WRITEONLY					/* error in init code (?) */
	AM_RANGE(0xc20000, 0xc20003) AM_WRITE(PC080SN_yscroll_word_0_w)
	AM_RANGE(0xc40000, 0xc40003) AM_WRITE(PC080SN_xscroll_word_0_w)
	AM_RANGE(0xc50000, 0xc50003) AM_WRITE(PC080SN_ctrl_word_0_w)
	AM_RANGE(0xd00000, 0xd03fff) AM_READWRITE(PC090OJ_word_0_r,PC090OJ_word_0_w)	/* sprite ram */
ADDRESS_MAP_END


static ADDRESS_MAP_START( opwolfb_map, ADDRESS_SPACE_PROGRAM, 16 )
	AM_RANGE(0x000000, 0x03ffff) AM_ROM
	AM_RANGE(0x0f0008, 0x0f000b) AM_READ(opwolf_in_r)			/* coins and buttons */
	AM_RANGE(0x0ff000, 0x0fffff) AM_READWRITE(cchip_r,cchip_w)
	AM_RANGE(0x100000, 0x107fff) AM_RAM
	AM_RANGE(0x200000, 0x200fff) AM_RAM_WRITE(paletteram16_xxxxRRRRGGGGBBBB_word_w) AM_BASE(&paletteram16)
	AM_RANGE(0x380000, 0x380003) AM_READ(opwolf_dsw_r)			/* dip switches */
	AM_RANGE(0x380000, 0x380003) AM_WRITE(rainbow_spritectrl_w)	// usually 0x4, changes when you fire
	AM_RANGE(0x3a0000, 0x3a0003) AM_READ(opwolf_lightgun_r)		/* lightgun, read at $11e0/6 */
	AM_RANGE(0x3c0000, 0x3c0001) AM_WRITENOP					/* watchdog ?? */
	AM_RANGE(0x3e0000, 0x3e0001) AM_READNOP AM_WRITE8(taitosound_port_w, 0xff00)
	AM_RANGE(0x3e0002, 0x3e0003) AM_READWRITE8(taitosound_comm_r,taitosound_comm_w, 0xff00)
	AM_RANGE(0xc00000, 0xc0ffff) AM_READWRITE(PC080SN_word_0_r,PC080SN_word_0_w)
	AM_RANGE(0xc10000, 0xc1ffff) AM_WRITEONLY					/* error in init code (?) */
	AM_RANGE(0xc20000, 0xc20003) AM_WRITE(PC080SN_yscroll_word_0_w)
	AM_RANGE(0xc40000, 0xc40003) AM_WRITE(PC080SN_xscroll_word_0_w)
	AM_RANGE(0xc50000, 0xc50003) AM_WRITE(PC080SN_ctrl_word_0_w)
	AM_RANGE(0xd00000, 0xd03fff) AM_READWRITE(PC090OJ_word_0_r,PC090OJ_word_0_w)	/* sprite ram */
ADDRESS_MAP_END


/***************************************************************************
    This extra Z80 substitutes for the c-chip in the bootleg
 */

static ADDRESS_MAP_START( opwolfb_sub_z80_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_ROM
	AM_RANGE(0x8800, 0x8800) AM_READ(z80_input1_r)	/* read at PC=$637: poked to $c004 */
	AM_RANGE(0x9000, 0x9000) AM_WRITENOP			/* unknown write, 0 then 1 each interrupt */
	AM_RANGE(0x9800, 0x9800) AM_READ(z80_input2_r)	/* read at PC=$631: poked to $c005 */
	AM_RANGE(0xa000, 0xa000) AM_WRITENOP	/* IRQ acknowledge (unimplemented) */
	AM_RANGE(0xc000, 0xc7ff) AM_RAM AM_BASE(&cchip_ram)
ADDRESS_MAP_END


/***************************************************************************/


//static UINT8 adpcm_d[0x08];
//0 - start ROM offset LSB
//1 - start ROM offset MSB
//2 - end ROM offset LSB
//3 - end ROM offset MSB
//start & end need to be multiplied by 16 to get a proper _byte_ address in adpcm ROM
//4 - always zero write (start trigger ?)
//5 - different values
//6 - different values

static MACHINE_START( opwolf )
{
	state_save_register_global_array(machine, adpcm_b);
	state_save_register_global_array(machine, adpcm_c);
	state_save_register_global_array(machine, adpcm_pos);
	state_save_register_global_array(machine, adpcm_end);
}

static MACHINE_RESET( opwolf )
{
	adpcm_b[0] = adpcm_b[1] = 0;
	adpcm_c[0] = adpcm_c[1] = 0;
	adpcm_pos[0] = adpcm_pos[1] = 0;
	adpcm_end[0] = adpcm_end[1] = 0;
	adpcm_data[0] = adpcm_data[1] = -1;

	msm5205_reset_w(devtag_get_device(machine, "msm1"), 1);
	msm5205_reset_w(devtag_get_device(machine, "msm2"), 1);
}

static void opwolf_msm5205_vck(const device_config *device)
{
	int chip = (strcmp(device->tag, "msm1") == 0) ? 0 : 1;
	if (adpcm_data[chip] != -1)
	{
		msm5205_data_w(device, adpcm_data[chip] & 0x0f);
		adpcm_data[chip] = -1;
		if (adpcm_pos[chip] == adpcm_end[chip])
			msm5205_reset_w(device, 1);
	}
	else
	{
		adpcm_data[chip] = memory_region(device->machine, "adpcm")[adpcm_pos[chip]];
		adpcm_pos[chip] = (adpcm_pos[chip] + 1) & 0x7ffff;
		msm5205_data_w(device, adpcm_data[chip] >> 4);
	}
}

static WRITE8_DEVICE_HANDLER( opwolf_adpcm_b_w )
{
	int start;
	int end;

	adpcm_b[offset] = data;

	if (offset==0x04) //trigger ?
	{
		start = adpcm_b[0] + adpcm_b[1]*256;
		end   = adpcm_b[2] + adpcm_b[3]*256;
		start *=16;
		end   *=16;
		adpcm_pos[0] = start;
		adpcm_end[0] = end;
		msm5205_reset_w(device, 0);
	}

//  logerror("CPU #1     b00%i-data=%2x   pc=%4x\n",offset,data,cpu_get_pc(space->cpu) );
}


static WRITE8_DEVICE_HANDLER( opwolf_adpcm_c_w )
{
	int start;
	int end;

	adpcm_c[offset] = data;

	if (offset==0x04) //trigger ?
	{
		start = adpcm_c[0] + adpcm_c[1]*256;
		end   = adpcm_c[2] + adpcm_c[3]*256;
		start *=16;
		end   *=16;
		adpcm_pos[1] = start;
		adpcm_end[1] = end;
		msm5205_reset_w(device, 0);
	}

//  logerror("CPU #1     c00%i-data=%2x   pc=%4x\n",offset,data,cpu_get_pc(space->cpu) );
}


static WRITE8_HANDLER( opwolf_adpcm_d_w )
{
//   logerror("CPU #1         d00%i-data=%2x   pc=%4x\n",offset,data,cpu_get_pc(space->cpu) );
}

static WRITE8_HANDLER( opwolf_adpcm_e_w )
{
//  logerror("CPU #1         e00%i-data=%2x   pc=%4x\n",offset,data,cpu_get_pc(space->cpu) );
}

static ADDRESS_MAP_START( opwolf_sound_z80_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x3fff) AM_ROM
	AM_RANGE(0x4000, 0x7fff) AM_ROMBANK(10)
	AM_RANGE(0x8000, 0x8fff) AM_RAM
	AM_RANGE(0x9000, 0x9001) AM_DEVREADWRITE("ymsnd", ym2151_r,ym2151_w)
	AM_RANGE(0x9002, 0x9100) AM_READNOP
	AM_RANGE(0xa000, 0xa000) AM_WRITE(taitosound_slave_port_w)
	AM_RANGE(0xa001, 0xa001) AM_READWRITE(taitosound_slave_comm_r,taitosound_slave_comm_w)
	AM_RANGE(0xb000, 0xb006) AM_DEVWRITE("msm1", opwolf_adpcm_b_w)
	AM_RANGE(0xc000, 0xc006) AM_DEVWRITE("msm2", opwolf_adpcm_c_w)
	AM_RANGE(0xd000, 0xd000) AM_WRITE(opwolf_adpcm_d_w)
	AM_RANGE(0xe000, 0xe000) AM_WRITE(opwolf_adpcm_e_w)
ADDRESS_MAP_END

/***********************************************************
             INPUT PORTS, DIPs
***********************************************************/

static INPUT_PORTS_START( opwolf )
	/* 0x380000 -> 0x0ff028 (-$fd8,A5) (C-chip) */
	PORT_START("DSWA")
	PORT_DIPUNUSED( 0x01, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Allow_Continue ) )
	PORT_DIPSETTING(    0x02, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	TAITO_DSWA_BITS_2_TO_3
	TAITO_COINAGE_WORLD

	/* 0x380002 -> 0x0ff02a (-$fd6,A5) (C-chip) */
	PORT_START("DSWB")
	TAITO_DIFFICULTY
	PORT_DIPNAME( 0x0c, 0x0c, "Ammo Magazines at Start" )
	PORT_DIPSETTING(    0x00, "4" )
	PORT_DIPSETTING(    0x04, "5" )
	PORT_DIPSETTING(    0x0c, "6" )
	PORT_DIPSETTING(    0x08, "7" )
	PORT_DIPUNUSED( 0x10, IP_ACTIVE_LOW )
	PORT_DIPUNUSED( 0x20, IP_ACTIVE_LOW )
	PORT_DIPUNUSED( 0x40, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Language ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Japanese ) )
	PORT_DIPSETTING(    0x00, DEF_STR( English ) )

	PORT_START("IN0")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW,  IPT_UNKNOWN )
	PORT_BIT( 0x08, IP_ACTIVE_LOW,  IPT_UNKNOWN )
	PORT_BIT( 0x10, IP_ACTIVE_LOW,  IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_LOW,  IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW,  IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW,  IPT_UNKNOWN )

	PORT_START("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW,  IPT_BUTTON1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW,  IPT_BUTTON2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW,  IPT_SERVICE1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW,  IPT_TILT )
	PORT_BIT( 0x10, IP_ACTIVE_LOW,  IPT_START1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW,  IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW,  IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW,  IPT_UNKNOWN )

	/* P1X (span allows you to shoot enemies behind status bar) */
	PORT_START(P1X_PORT_TAG)
	PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_X ) PORT_CROSSHAIR(X, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(15) PORT_PLAYER(1)

	/* P1Y (span allows you to be slightly offscreen) */
	PORT_START(P1Y_PORT_TAG)
	PORT_BIT( 0xff, 0x80, IPT_LIGHTGUN_Y ) PORT_CROSSHAIR(Y, 1.0, 0.0, 0) PORT_SENSITIVITY(25) PORT_KEYDELTA(15) PORT_PLAYER(1)
INPUT_PORTS_END

static INPUT_PORTS_START( opwolfu )
	PORT_INCLUDE( opwolf )

	PORT_MODIFY( "DSWA" )
	TAITO_COINAGE_JAPAN_OLD
INPUT_PORTS_END

static INPUT_PORTS_START( opwolfb )
	PORT_INCLUDE( opwolf )

	PORT_MODIFY( "DSWB" )
	PORT_DIPUNUSED( 0x80, IP_ACTIVE_LOW )                        /* see notes */
INPUT_PORTS_END


/**************************************************************
                GFX DECODING
**************************************************************/

static const gfx_layout charlayout =
{
	8,8,	/* 8*8 characters */
	RGN_FRAC(1,1),
	4,	/* 4 bits per pixel */
	{ 0, 1, 2, 3 },
	{ 2*4, 3*4, 0*4, 1*4, 6*4, 7*4, 4*4, 5*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	32*8	/* every sprite takes 32 consecutive bytes */
};

static const gfx_layout tilelayout =
{
	16,16,	/* 16*16 sprites */
	RGN_FRAC(1,1),
	4,	/* 4 bits per pixel */
	{ 0, 1, 2, 3 },
	{ 2*4, 3*4, 0*4, 1*4, 6*4, 7*4, 4*4, 5*4, 10*4, 11*4, 8*4, 9*4, 14*4, 15*4, 12*4, 13*4 },
	{ 0*64, 1*64, 2*64, 3*64, 4*64, 5*64, 6*64, 7*64, 8*64, 9*64, 10*64, 11*64, 12*64, 13*64, 14*64, 15*64 },
	128*8	/* every sprite takes 128 consecutive bytes */
};

static const gfx_layout charlayout_b =
{
	8,8,	/* 8*8 characters */
	RGN_FRAC(1,1),
	4,	/* 4 bits per pixel */
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	32*8	/* every sprite takes 32 consecutive bytes */
};

static const gfx_layout tilelayout_b =
{
	16,16,	/* 16*16 sprites */
	RGN_FRAC(1,1),
	4,	/* 4 bits per pixel */
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4, 8*4, 9*4, 10*4, 11*4, 12*4, 13*4, 14*4, 15*4 },
	{ 0*64, 1*64, 2*64, 3*64, 4*64, 5*64, 6*64, 7*64, 8*64, 9*64, 10*64, 11*64, 12*64, 13*64, 14*64, 15*64 },
	128*8	/* every sprite takes 128 consecutive bytes */
};

static GFXDECODE_START( opwolf )
	GFXDECODE_ENTRY( "gfx2", 0, tilelayout,  0, 256 )	/* sprites */
	GFXDECODE_ENTRY( "gfx1", 0, charlayout,  0, 256 )	/* scr tiles */
GFXDECODE_END

static GFXDECODE_START( opwolfb )
	GFXDECODE_ENTRY( "gfx2", 0, tilelayout_b,  0, 256 )	/* sprites */
	GFXDECODE_ENTRY( "gfx1", 0, charlayout_b,  0, 256 )	/* scr tiles */
GFXDECODE_END


/**************************************************************
                 YM2151 (SOUND)
**************************************************************/

/* handler called by the YM2151 emulator when the internal timers cause an IRQ */

static void irq_handler(const device_config *device, int irq)
{
	cputag_set_input_line(device->machine, "audiocpu", 0, irq ? ASSERT_LINE : CLEAR_LINE);
}


static const ym2151_interface ym2151_config =
{
	irq_handler,
	sound_bankswitch_w
};


static const msm5205_interface msm5205_config =
{
	opwolf_msm5205_vck,	/* VCK function */
	MSM5205_S48_4B		/* 8 kHz */
};



/***********************************************************
                 MACHINE DRIVERS
***********************************************************/

static MACHINE_DRIVER_START( opwolf )

	/* basic machine hardware */
	MDRV_CPU_ADD("maincpu", M68000, CPU_CLOCK )	/* 8 MHz */
	MDRV_CPU_PROGRAM_MAP(opwolf_map)
	MDRV_CPU_VBLANK_INT("screen", irq5_line_hold)

	MDRV_CPU_ADD("audiocpu", Z80, SOUND_CPU_CLOCK )	/* 4 MHz */
	MDRV_CPU_PROGRAM_MAP(opwolf_sound_z80_map)

	MDRV_QUANTUM_TIME(HZ(600))	/* 10 CPU slices per frame - enough for the sound CPU to read all commands */

	MDRV_MACHINE_START(opwolf)
	MDRV_MACHINE_RESET(opwolf)

	/* video hardware */
	MDRV_SCREEN_ADD("screen", RASTER)
	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(40*8, 32*8)
	MDRV_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1)

	MDRV_GFXDECODE(opwolf)
	MDRV_PALETTE_LENGTH(8192)

	MDRV_VIDEO_START(opwolf)
	MDRV_VIDEO_UPDATE(opwolf)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")

	MDRV_SOUND_ADD("ymsnd", YM2151, SOUND_CPU_CLOCK )	/* 4 MHz */
	MDRV_SOUND_CONFIG(ym2151_config)
	MDRV_SOUND_ROUTE(0, "lspeaker", 0.75)
	MDRV_SOUND_ROUTE(1, "rspeaker", 0.75)

	MDRV_SOUND_ADD("msm1", MSM5205, 384000)
	MDRV_SOUND_CONFIG(msm5205_config)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.60)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.60)

	MDRV_SOUND_ADD("msm2", MSM5205, 384000)
	MDRV_SOUND_CONFIG(msm5205_config)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.60)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.60)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( opwolfb ) /* OSC clocks unknown for the bootleg, but changed to match original sets */

	/* basic machine hardware */
	MDRV_CPU_ADD("maincpu", M68000, CPU_CLOCK )	/* 8 MHz ??? */
	MDRV_CPU_PROGRAM_MAP(opwolfb_map)
	MDRV_CPU_VBLANK_INT("screen", irq5_line_hold)

	MDRV_CPU_ADD("audiocpu", Z80, SOUND_CPU_CLOCK )	/* 4 MHz ??? */
	MDRV_CPU_PROGRAM_MAP(opwolf_sound_z80_map)

	MDRV_CPU_ADD("sub", Z80, SOUND_CPU_CLOCK )	/* 4 MHz ??? */
	MDRV_CPU_PROGRAM_MAP(opwolfb_sub_z80_map)
	MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)

	MDRV_QUANTUM_TIME(HZ(600))	/* 10 CPU slices per frame - enough for the sound CPU to read all commands */

	MDRV_MACHINE_START(opwolf)

	/* video hardware */
	MDRV_SCREEN_ADD("screen", RASTER)
	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(40*8, 32*8)
	MDRV_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1)

	MDRV_GFXDECODE(opwolfb)
	MDRV_PALETTE_LENGTH(8192)

	MDRV_VIDEO_START(opwolf)
	MDRV_VIDEO_UPDATE(opwolf)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")

	MDRV_SOUND_ADD("ymsnd", YM2151, SOUND_CPU_CLOCK )
	MDRV_SOUND_CONFIG(ym2151_config)
	MDRV_SOUND_ROUTE(0, "lspeaker", 0.75)
	MDRV_SOUND_ROUTE(1, "rspeaker", 0.75)

	MDRV_SOUND_ADD("msm1", MSM5205, 384000)
	MDRV_SOUND_CONFIG(msm5205_config)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.60)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.60)

	MDRV_SOUND_ADD("msm2", MSM5205, 384000)
	MDRV_SOUND_CONFIG(msm5205_config)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "lspeaker", 0.60)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "rspeaker", 0.60)
MACHINE_DRIVER_END


/***************************************************************************
                    DRIVERS
***************************************************************************/

ROM_START( opwolf )
	ROM_REGION( 0x40000, "maincpu", 0 )     /* 256k for 68000 code */
	ROM_LOAD16_BYTE( "b20-05-02.40",  0x00000, 0x10000, CRC(3ffbfe3a) SHA1(e41257e6af18bab4e36267a0c25a6aaa742972d2) )
	ROM_LOAD16_BYTE( "b20-03-02.30",  0x00001, 0x10000, CRC(fdabd8a5) SHA1(866ec6168489024b8d157f2d5b1553d7f6e3d9b7) )
	ROM_LOAD16_BYTE( "b20-04.39",     0x20000, 0x10000, CRC(216b4838) SHA1(2851cae00bb3e32e20f35fdab8ed6f149e658363) )
	ROM_LOAD16_BYTE( "b20-20.29",     0x20001, 0x10000, CRC(d244431a) SHA1(cb6c1d330a526f05c205f68247328161b8d4a1ba) )

	ROM_REGION( 0x20000, "audiocpu", 0 )      /* sound cpu */
	ROM_LOAD( "b20-07.10",  0x00000, 0x04000, CRC(45c7ace3) SHA1(06f7393f6b973b7735c27e8380cb4148650cfc16) )
	ROM_CONTINUE(           0x10000, 0x0c000 ) /* banked stuff */

	ROM_REGION( 0x80000, "gfx1", 0 )
	ROM_LOAD( "b20-13.13",  0x00000, 0x80000, CRC(f6acdab1) SHA1(716b94ab3fa330ecf22df576f6a9f47a49c7554a) )	/* SCR tiles (8 x 8) */

	ROM_REGION( 0x80000, "gfx2", 0 )
	ROM_LOAD( "b20-14.72",  0x00000, 0x80000, CRC(89f889e5) SHA1(1592f6ce4fbb75e33d6ab957e5b90242a7a7a8c4) )	/* Sprites (16 x 16) */

	ROM_REGION( 0x80000, "adpcm", 0 )	/* ADPCM samples */
	ROM_LOAD( "b20-08.21",  0x00000, 0x80000, CRC(f3e19c64) SHA1(39d48645f776c9c2ade537d959ecc6f9dc6dfa1b) )
ROM_END

/* I don't know what this set changes.  There is a single byte changed near the end of the roms, just after the
   copyright strings, however, it is not the region byte.  This set came from a 100% legitimate Taito PCB with
   original labels.  It would be easy just to write this off as a bad read / hacked rom but the bootleg version
   has exactly the same change and the label is different (b20-17 instead of b20-20) so this seems unlikely */

ROM_START( opwolfa )
	ROM_REGION( 0x40000, "maincpu", 0 )     /* 256k for 68000 code */
	ROM_LOAD16_BYTE( "b20-05-02.40",  0x00000, 0x10000, CRC(3ffbfe3a) SHA1(e41257e6af18bab4e36267a0c25a6aaa742972d2) )
	ROM_LOAD16_BYTE( "b20-03-02.30",  0x00001, 0x10000, CRC(fdabd8a5) SHA1(866ec6168489024b8d157f2d5b1553d7f6e3d9b7) )
	ROM_LOAD16_BYTE( "b20-04.39",     0x20000, 0x10000, CRC(216b4838) SHA1(2851cae00bb3e32e20f35fdab8ed6f149e658363) )
	ROM_LOAD16_BYTE( "b20-17.29",     0x20001, 0x10000, CRC(6043188e) SHA1(3a6f4836b1c19d37713f5714a947276baf1df50c) )

	ROM_REGION( 0x20000, "audiocpu", 0 )      /* sound cpu */
	ROM_LOAD( "b20-07.10",  0x00000, 0x04000, CRC(45c7ace3) SHA1(06f7393f6b973b7735c27e8380cb4148650cfc16) )
	ROM_CONTINUE(           0x10000, 0x0c000 ) /* banked stuff */

	ROM_REGION( 0x80000, "gfx1", 0 )
	ROM_LOAD( "b20-13.13",  0x00000, 0x80000, CRC(f6acdab1) SHA1(716b94ab3fa330ecf22df576f6a9f47a49c7554a) )	/* SCR tiles (8 x 8) */

	ROM_REGION( 0x80000, "gfx2", 0 )
	ROM_LOAD( "b20-14.72",  0x00000, 0x80000, CRC(89f889e5) SHA1(1592f6ce4fbb75e33d6ab957e5b90242a7a7a8c4) )	/* Sprites (16 x 16) */

	ROM_REGION( 0x80000, "adpcm", 0 )	/* ADPCM samples */
	ROM_LOAD( "b20-08.21",  0x00000, 0x80000, CRC(f3e19c64) SHA1(39d48645f776c9c2ade537d959ecc6f9dc6dfa1b) )
ROM_END

ROM_START( opwolfj )
	ROM_REGION( 0x40000, "maincpu", 0 )     /* 256k for 68000 code */
	ROM_LOAD16_BYTE( "b20-05-02.40",  0x00000, 0x10000, CRC(3ffbfe3a) SHA1(e41257e6af18bab4e36267a0c25a6aaa742972d2) )
	ROM_LOAD16_BYTE( "b20-03-02.30",  0x00001, 0x10000, CRC(fdabd8a5) SHA1(866ec6168489024b8d157f2d5b1553d7f6e3d9b7) )
	ROM_LOAD16_BYTE( "b20-04.39",     0x20000, 0x10000, CRC(216b4838) SHA1(2851cae00bb3e32e20f35fdab8ed6f149e658363) )
	ROM_LOAD16_BYTE( "b20-18.29",     0x20001, 0x10000, CRC(fd202470) SHA1(3108c14953d2f50d861946e9f646813b7050b58a) )

	ROM_REGION( 0x20000, "audiocpu", 0 )      /* sound cpu */
	ROM_LOAD( "b20-07.10",  0x00000, 0x04000, CRC(45c7ace3) SHA1(06f7393f6b973b7735c27e8380cb4148650cfc16) )
	ROM_CONTINUE(           0x10000, 0x0c000 ) /* banked stuff */

	ROM_REGION( 0x80000, "gfx1", 0 )
	ROM_LOAD( "b20-13.13",  0x00000, 0x80000, CRC(f6acdab1) SHA1(716b94ab3fa330ecf22df576f6a9f47a49c7554a) )	/* SCR tiles (8 x 8) */

	ROM_REGION( 0x80000, "gfx2", 0 )
	ROM_LOAD( "b20-14.72",  0x00000, 0x80000, CRC(89f889e5) SHA1(1592f6ce4fbb75e33d6ab957e5b90242a7a7a8c4) )	/* Sprites (16 x 16) */

	ROM_REGION( 0x80000, "adpcm", 0 )	/* ADPCM samples */
	ROM_LOAD( "b20-08.21",  0x00000, 0x80000, CRC(f3e19c64) SHA1(39d48645f776c9c2ade537d959ecc6f9dc6dfa1b) )
ROM_END

ROM_START( opwolfu ) /* Taito TC0030 C-Chip labeled B20-18 (yes, it has a specific label on it) */
	ROM_REGION( 0x40000, "maincpu", 0 )     /* 256k for 68000 code */
	ROM_LOAD16_BYTE( "b20-05-02.40",  0x00000, 0x10000, CRC(3ffbfe3a) SHA1(e41257e6af18bab4e36267a0c25a6aaa742972d2) )
	ROM_LOAD16_BYTE( "b20-03-02.30",  0x00001, 0x10000, CRC(fdabd8a5) SHA1(866ec6168489024b8d157f2d5b1553d7f6e3d9b7) )
	ROM_LOAD16_BYTE( "b20-04.39",     0x20000, 0x10000, CRC(216b4838) SHA1(2851cae00bb3e32e20f35fdab8ed6f149e658363) )
	ROM_LOAD16_BYTE( "b20-19.29",     0x20001, 0x10000, CRC(b71bc44c) SHA1(5b404bd7630f01517ab98bda40ca43c11268035a) )

	ROM_REGION( 0x20000, "audiocpu", 0 )      /* sound cpu */
	ROM_LOAD( "b20-07.10",  0x00000, 0x04000, CRC(45c7ace3) SHA1(06f7393f6b973b7735c27e8380cb4148650cfc16) )
	ROM_CONTINUE(           0x10000, 0x0c000 ) /* banked stuff */

	ROM_REGION( 0x80000, "gfx1", 0 )
	ROM_LOAD( "b20-13.13",  0x00000, 0x80000, CRC(f6acdab1) SHA1(716b94ab3fa330ecf22df576f6a9f47a49c7554a) )	/* SCR tiles (8 x 8) */

	ROM_REGION( 0x80000, "gfx2", 0 )
	ROM_LOAD( "b20-14.72",  0x00000, 0x80000, CRC(89f889e5) SHA1(1592f6ce4fbb75e33d6ab957e5b90242a7a7a8c4) )	/* Sprites (16 x 16) */

	ROM_REGION( 0x80000, "adpcm", 0 )	/* ADPCM samples */
	ROM_LOAD( "b20-08.21",  0x00000, 0x80000, CRC(f3e19c64) SHA1(39d48645f776c9c2ade537d959ecc6f9dc6dfa1b) )
ROM_END

ROM_START( opwolfb )
	ROM_REGION( 0x40000, "maincpu", 0 )     /* 256k for 68000 code */
	ROM_LOAD16_BYTE( "opwlfb.12",  0x00000, 0x10000, CRC(d87e4405) SHA1(de8a7763acd57293fbbff609e949ecd66c0f9234) )
	ROM_LOAD16_BYTE( "opwlfb.10",  0x00001, 0x10000, CRC(9ab6f75c) SHA1(85310258ca005ffb031e8d6b3f43c3d1fc29ef14) )
	ROM_LOAD16_BYTE( "opwlfb.13",  0x20000, 0x10000, CRC(61230c6e) SHA1(942764aec0c55ba00df8dbb54e127b73e24192ae) )
	ROM_LOAD16_BYTE( "opwlfb.11",  0x20001, 0x10000, CRC(342e318d) SHA1(a52918d16884ca42b2a3b910bc71bfd81b45f1ab) )

	ROM_REGION( 0x20000, "audiocpu", 0 )      /* sound cpu */
	ROM_LOAD( "opwlfb.30",  0x00000, 0x04000, CRC(0669b94c) SHA1(f10894a6fad8ed144a528db696436b58f62ddee4) )
	ROM_CONTINUE(           0x10000, 0x04000 ) /* banked stuff */

	ROM_REGION( 0x10000, "sub", 0 )      /* c-chip substitute Z80 */
	ROM_LOAD( "opwlfb.09",   0x00000, 0x08000, CRC(ab27a3dd) SHA1(cf589e7a9ccf3e86020b86f917fb91f3d8ba7512) )

	ROM_REGION( 0x80000, "gfx1", 0 )
	ROM_LOAD16_BYTE( "opwlfb.08",   0x00000, 0x10000, CRC(134d294e) SHA1(bd05169dbd761c2944f0ac51c1ec114577777452) )	/* SCR tiles (8 x 8) */
	ROM_LOAD16_BYTE( "opwlfb.06",   0x20000, 0x10000, CRC(317d0e66) SHA1(70298c0ef5243f481b18f904be9404527d1d99d5) )
	ROM_LOAD16_BYTE( "opwlfb.07",   0x40000, 0x10000, CRC(e1c4095e) SHA1(d5f1d26d6612e78001002f92de670e68e00c6f9e) )
	ROM_LOAD16_BYTE( "opwlfb.05",   0x60000, 0x10000, CRC(fd9e72c8) SHA1(7a76f57641c3f0198565cd163188b581253173b2) )
	ROM_LOAD16_BYTE( "opwlfb.04",   0x00001, 0x10000, CRC(de0ca98d) SHA1(066e89ec0c64da14bdcd2b337f95c0de5de33c11) )
	ROM_LOAD16_BYTE( "opwlfb.02",   0x20001, 0x10000, CRC(6231fdd0) SHA1(1c830c106cf3c94a8d06ed2fff030a5d516ab6d6) )
	ROM_LOAD16_BYTE( "opwlfb.03",   0x40001, 0x10000, CRC(ccf8ba80) SHA1(8366f5ef0de885e5241567d1a083d98a8a2875d9) )
	ROM_LOAD16_BYTE( "opwlfb.01",   0x60001, 0x10000, CRC(0a65f256) SHA1(4dfcd3cb138a87d002eb65a02f94e33f4d07676d) )

	ROM_REGION( 0x80000, "gfx2", 0 )
	ROM_LOAD16_BYTE( "opwlfb.14",   0x00000, 0x10000, CRC(663786eb) SHA1(a25710f6c16158e51d0934f184390a01ff0a614a) )	/* Sprites (16 x 16) */
	ROM_LOAD16_BYTE( "opwlfb.15",   0x20000, 0x10000, CRC(315b8aa9) SHA1(4a904e5532421d933e4c401c03c958eb32b15e03) )
	ROM_LOAD16_BYTE( "opwlfb.16",   0x40000, 0x10000, CRC(e01099e3) SHA1(4c5391d71978f72c57c140e58a767e138acdce12) )
	ROM_LOAD16_BYTE( "opwlfb.17",   0x60000, 0x10000, CRC(56fbe61d) SHA1(0e4dce8ee981bdd851e500fa9dca5d40908e142f) )
	ROM_LOAD16_BYTE( "opwlfb.18",   0x00001, 0x10000, CRC(de9ab08e) SHA1(ef674c965f35efaf747f1ddbf9e9164fcceb0c1c) )
	ROM_LOAD16_BYTE( "opwlfb.19",   0x20001, 0x10000, CRC(645cf85e) SHA1(91c244c2e238b61c8b2f39e5fa01cc23ebbfe2ce) )
	ROM_LOAD16_BYTE( "opwlfb.20",   0x40001, 0x10000, CRC(d80b9cc6) SHA1(b189f35eb206da1ab313620e251e6bb10edeee04) )
	ROM_LOAD16_BYTE( "opwlfb.21",   0x60001, 0x10000, CRC(97d25157) SHA1(cfb3f76ed860d90235dc0e32919a5ec3d3e683dd) )

	ROM_REGION( 0x80000, "adpcm", 0 )	/* ADPCM samples (interleaved) */
	ROM_LOAD16_BYTE( "opwlfb.29",   0x00000, 0x10000, CRC(05a9eac0) SHA1(26eb1acc65aeb759920b35bcbcac6d6c2789584c) )
	ROM_LOAD16_BYTE( "opwlfb.28",   0x20000, 0x10000, CRC(281b2175) SHA1(3789e58da682041226f70eba87b31876cb206906) )
	ROM_LOAD16_BYTE( "opwlfb.27",   0x40000, 0x10000, CRC(441211a6) SHA1(82e84ae90765df5f7f6b6f32a2bb52ac40132f8d) )
	ROM_LOAD16_BYTE( "opwlfb.26",   0x60000, 0x10000, CRC(86d1d42d) SHA1(9d63e9e35fa51d8e6eac30556ba5a4dca7c14418) )
	ROM_LOAD16_BYTE( "opwlfb.25",   0x00001, 0x10000, CRC(85b87f58) SHA1(f26cf4ab8f9d30d1b1ac84be328ca821524b234e) )
	ROM_LOAD16_BYTE( "opwlfb.24",   0x20001, 0x10000, CRC(8efc5d4d) SHA1(21068d7fcfe293d99ad9f999d84483bf1a49ec6d) )
	ROM_LOAD16_BYTE( "opwlfb.23",   0x40001, 0x10000, CRC(a874c703) SHA1(c9d6074265f5d5028c69c81eaba29fa178943341) )
	ROM_LOAD16_BYTE( "opwlfb.22",   0x60001, 0x10000, CRC(9228481f) SHA1(8160f919f5e6a347c915a2bd7488b488fe2401bc) )
ROM_END


static DRIVER_INIT( opwolf )
{
	UINT16* rom=(UINT16*)memory_region(machine, "maincpu");

	opwolf_region = rom[0x03fffe / 2] & 0xff;

	opwolf_cchip_init(machine);

	// World & US version have different gun offsets, presumably slightly different gun hardware
	opwolf_gun_xoffs = 0xec - (rom[0x03ffb0 / 2] & 0xff);
	opwolf_gun_yoffs = 0x1c - (rom[0x03ffae / 2] & 0xff);

	memory_configure_bank(machine, 10, 0, 4, memory_region(machine, "audiocpu") + 0x10000, 0x4000);
}


static DRIVER_INIT( opwolfb )
{
	UINT16* rom=(UINT16*)memory_region(machine, "maincpu");

	opwolf_region = rom[0x03fffe / 2] & 0xff;

	/* bootleg needs different range of raw gun coords */
	opwolf_gun_xoffs = -2;
	opwolf_gun_yoffs = 17;

	memory_configure_bank(machine, 10, 0, 4, memory_region(machine, "audiocpu") + 0x10000, 0x4000);
}


/*    year  rom       parent    machine   inp       init */
GAME( 1987, opwolf,   0,        opwolf,   opwolf,   opwolf,   ROT0, "Taito Corporation Japan", "Operation Wolf (World, set 1)", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1987, opwolfa,  opwolf,   opwolf,   opwolf,   opwolf,   ROT0, "Taito Corporation Japan", "Operation Wolf (World, set 2)", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1987, opwolfj,  opwolf,   opwolf,   opwolf,   opwolf,   ROT0, "Taito Corporation", "Operation Wolf (Japan)", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1987, opwolfu,  opwolf,   opwolf,   opwolfu,  opwolf,   ROT0, "Taito America Corporation", "Operation Wolf (US)", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1987, opwolfb,  opwolf,   opwolfb,  opwolfb,  opwolfb,  ROT0, "[Taito] (Bear Corporation Korea bootleg)", "Operation Bear (bootleg of Operation Wolf)", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
