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// license:BSD-3-Clause
// copyright-holders:Uki
/*****************************************************************************

    Markham (c) 1983 Sun Electronics
    Strength & Skill (c) 1984 Sun Electronics

    Driver by Uki

    TODO:
    - needs merging with ikki.cpp
    - look up schematics for all games
    - banbam and pettanp likely share the same MCU code, check once redumped
    - fix banbam/pettanp simulated comms or hopefully hook up MCU ports and
    at least get something out of the existing dump

    Notes:
    Banbam has a Fujitsu MB8841 4-Bit MCU for protection labeled SUN 8212.
    Its internal ROM has been imaged, manually typed, and decoded as sun-8212.ic3.
    Pettan Pyuu is a clone of Banbam although with different levels / play fields.

    Protection currently fails on both Pettan Pyuu and Banbam if you play either
    game to Round 11. When you get there, the music still plays but all you see is
    "ERR-43" in red text at the bottom left of the screen and the game is no longer
    playable.  Also, in some earlier rounds you notice the background graphics are
    also not producing logical playfields as bits of graphics are in different
    locations.

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

#include "emu.h"
#include "includes/markham.h"

#define MASTER_CLOCK (20_MHz_XTAL)
#define PIXEL_CLOCK  (MASTER_CLOCK/4) // guess
#define CPU_CLOCK    (8_MHz_XTAL)

/* also a guess */
#define HTOTAL       (320)
#define HBEND        (8)
#define HBSTART      (248)
#define VTOTAL       (262)
#define VBEND        (16)
#define VBSTART      (240)

READ8_MEMBER(markham_state::markham_e004_r)
{
	return 0;
}

WRITE8_MEMBER(markham_state::coin_output_w)
{
	/* only activated after first write? */
	/* all machines write to slot B at selftest even without a coin */
	if (m_coin_unlock)
	{
		/* banbam and pettanp write to both slot A and B when a coin
		is inserted regardless of which; does this imply that they only
		have one coin counter? */
		machine().bookkeeping().coin_counter_w(0, BIT(data, 0));
		machine().bookkeeping().coin_counter_w(1, BIT(data, 1));
	}
	else
	{
		m_coin_unlock = true;
	}
}

template<int Bit>
WRITE8_MEMBER(markham_state::flipscreen_w)
{
	/* Strength & Skill hardware only */
	m_scroll_ctrl = data >> 5;

	if (flip_screen() != (BIT(data, Bit)))
	{
		flip_screen_set(BIT(data, Bit));
		machine().tilemap().mark_all_dirty();
	}
}

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

READ8_MEMBER(markham_state::strnskil_d800_r)
{
	/* bit0: interrupt type?, bit1: CPU2 busack? */

	return (m_irq_source);
}

TIMER_DEVICE_CALLBACK_MEMBER(markham_state::strnskil_scanline)
{
	int scanline = param;

	if (scanline == m_irq_scanline_end || scanline == m_irq_scanline_start)
	{
		m_maincpu->set_input_line(0, HOLD_LINE);

		m_irq_source = (scanline != m_irq_scanline_end);
	}
}

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

READ8_MEMBER(markham_state::banbam_protection_r)
{
	int res;

	switch (m_maincpu->pc())
	{
		case 0x6094:    res = 0xa5; break;
		case 0x6118:    res = 0x20; break;  /* bits 0-3 unknown */
		case 0x6199:    res = 0x30; break;  /* bits 0-3 unknown */
		case 0x61f5:    res = 0x60 | (machine().rand() & 0x0f); break;  /* bits 0-3 unknown */
		case 0x6255:    res = 0x77; break;
		case 0x62a8:    res = 0xb4; break;
		default:        res = 0xff; break;
	}

	logerror("%04x: protection_r -> %02x\n", m_maincpu->pc(), res);
	return res;
}

READ8_MEMBER(markham_state::pettanp_protection_r)
{
	int res;

	switch (m_maincpu->pc())
	{
		case 0x6066:    res = 0xa5; break;
		case 0x60dc:    res = 0x20; break;  /* bits 0-3 unknown */
		case 0x615d:    res = 0x30; break;  /* bits 0-3 unknown */
		case 0x61b9:    res = 0x60 | (machine().rand() & 0x0f); break;  /* bits 0-3 unknown */
		case 0x6219:    res = 0x77; break;
		case 0x626c:    res = 0xb4; break;
		default:        res = 0xff; break;
	}

	logerror("%04x: protection_r -> %02x\n", m_maincpu->pc(), res);
	return res;
}

WRITE8_MEMBER(markham_state::protection_w)
{
	logerror("%04x: protection_w %02x\n", m_maincpu->pc(), data);
}

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

void markham_state::base_master_map(address_map &map)
{
	map(0x0000, 0x5fff).rom();

	map(0xc000, 0xc7ff).ram();
	map(0xd000, 0xd7ff).ram().w(this, FUNC(markham_state::videoram_w)).share("videoram");
}

void markham_state::markham_master_map(address_map &map)
{
	base_master_map(map);

	map(0xc800, 0xcfff).ram().share("spriteram");
	map(0xd800, 0xdfff).ram().share("share1");

	map(0xe000, 0xe000).portr("DSW2");
	map(0xe001, 0xe001).portr("DSW1");
	map(0xe002, 0xe002).portr("P1");
	map(0xe003, 0xe003).portr("P2");

	map(0xe004, 0xe004).r(this, FUNC(markham_state::markham_e004_r)); /* from CPU2 busack */

	map(0xe005, 0xe005).portr("SYSTEM");

	map(0xe008, 0xe008).w(this, FUNC(markham_state::coin_output_w));
	map(0xe009, 0xe009).nopw(); /* to CPU2 busreq */

	map(0xe00c, 0xe00d).writeonly().share("xscroll");
	map(0xe00e, 0xe00e).w(this, FUNC(markham_state::flipscreen_w<0>));
}

void markham_state::strnskil_master_map(address_map &map)
{
	base_master_map(map);

	map(0x6000, 0x9fff).rom();

	map(0xc800, 0xcfff).ram().share("share1");

	map(0xd800, 0xd800).r(this, FUNC(markham_state::strnskil_d800_r));
	map(0xd801, 0xd801).portr("DSW1");
	map(0xd802, 0xd802).portr("DSW2");
	map(0xd803, 0xd803).portr("SYSTEM");
	map(0xd804, 0xd804).portr("P1");
	map(0xd805, 0xd805).portr("P2");

	/* same write used here is used for scrolling */
	map(0xd808, 0xd808).w(this, FUNC(markham_state::flipscreen_w<3>));
	map(0xd809, 0xd809).w(this, FUNC(markham_state::coin_output_w));
	map(0xd80a, 0xd80b).writeonly().share("xscroll");
}

void markham_state::markham_slave_map(address_map &map)
{
	map(0x0000, 0x5fff).rom();
	map(0x8000, 0x87ff).ram().share("share1");

	map(0xc000, 0xc000).w("sn1", FUNC(sn76496_device::write));
	map(0xc001, 0xc001).w("sn2", FUNC(sn76496_device::write));

	map(0xc002, 0xc002).nopw(); /* unknown */
	map(0xc003, 0xc003).nopw(); /* unknown */
}

void markham_state::strnskil_slave_map(address_map &map)
{
	map(0x0000, 0x5fff).rom();
	map(0xc000, 0xc7ff).ram().share("spriteram");
	map(0xc800, 0xcfff).ram().share("share1");

	map(0xd801, 0xd801).w("sn1", FUNC(sn76496_device::write));
	map(0xd802, 0xd802).w("sn2", FUNC(sn76496_device::write));
}

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

static INPUT_PORTS_START( markham )
	PORT_START("DSW1")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:1")
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "5" )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("SW1:2")
	PORT_DIPSETTING(    0x02, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Flip_Screen ) ) PORT_DIPLOCATION("SW1:3")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x00, "Coin Chutes" ) PORT_DIPLOCATION("SW1:4")
	PORT_DIPSETTING(    0x00, "Individual" )
	PORT_DIPSETTING(    0x08, "Common" )
	PORT_DIPNAME( 0xf0, 0x00, "Coin1 / Coin2" ) PORT_DIPLOCATION("SW1:5,6,7,8")
	PORT_DIPSETTING(    0x00, "1C 1C / 1C 1C" )
	PORT_DIPSETTING(    0x10, "2C 1C / 2C 1C" )
	PORT_DIPSETTING(    0x20, "2C 1C / 1C 3C" )
	PORT_DIPSETTING(    0x30, "1C 1C / 1C 2C" )
	PORT_DIPSETTING(    0x40, "1C 1C / 1C 3C" )
	PORT_DIPSETTING(    0x50, "1C 1C / 1C 4C" )
	PORT_DIPSETTING(    0x60, "1C 1C / 1C 5C" )
	PORT_DIPSETTING(    0x70, "1C 1C / 1C 6C" )
	PORT_DIPSETTING(    0x80, "1C 2C / 1C 2C" )
	PORT_DIPSETTING(    0x90, "1C 2C / 1C 4C" )
	PORT_DIPSETTING(    0xa0, "1C 2C / 1C 5C" )
	PORT_DIPSETTING(    0xb0, "1C 2C / 1C 10C" )
	PORT_DIPSETTING(    0xc0, "1C 2C / 1C 11C" )
	PORT_DIPSETTING(    0xd0, "1C 2C / 1C 12C" )
	PORT_DIPSETTING(    0xe0, "1C 2C / 1C 6C" )
	PORT_DIPSETTING(    0xf0, DEF_STR( Free_Play ) )

	PORT_START("DSW2")
	PORT_DIPNAME( 0x03, 0x02, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SW2:1,2")
	PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	PORT_DIPSETTING(    0x01, "20000" )
	PORT_DIPSETTING(    0x02, "20000, Every 50000" )
	PORT_DIPSETTING(    0x03, "20000, Every 80000" )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SW2:3")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPUNUSED_DIPLOC( 0x08, 0x08, "SW2:4" ) /* These next five dips are unused according to the manual */
	PORT_DIPUNUSED_DIPLOC( 0x10, 0x10, "SW2:5" )
	PORT_DIPUNUSED_DIPLOC( 0x20, 0x20, "SW2:6" )
	PORT_DIPUNUSED_DIPLOC( 0x40, 0x40, "SW2:7" )
	PORT_DIPNAME( 0x80, 0x00, "Freeze" ) PORT_DIPLOCATION("SW2:8")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )

	PORT_START("P1") /* e002 */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY

	PORT_START("P2") /* e003 */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_COCKTAIL
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL

	PORT_START("SYSTEM") /* e005 */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SERVICE1 )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_SERVICE( 0x10, IP_ACTIVE_HIGH )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
INPUT_PORTS_END

static INPUT_PORTS_START( strnskil )
	PORT_START("DSW1")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x00, "Unknown 1-2" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x02, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x00, "Unknown 1-4" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )
	PORT_DIPNAME( 0xf0, 0x00, "Coin1 / Coin2" )
	PORT_DIPSETTING(    0x00, "1C 1C / 1C 1C" )
	PORT_DIPSETTING(    0x10, "2C 1C / 2C 1C" )
	PORT_DIPSETTING(    0x20, "2C 1C / 1C 3C" )
	PORT_DIPSETTING(    0x30, "1C 1C / 1C 2C" )
	PORT_DIPSETTING(    0x40, "1C 1C / 1C 3C" )
	PORT_DIPSETTING(    0x50, "1C 1C / 1C 4C" )
	PORT_DIPSETTING(    0x60, "1C 1C / 1C 5C" )
	PORT_DIPSETTING(    0x70, "1C 1C / 1C 6C" )
	PORT_DIPSETTING(    0x80, "1C 2C / 1C 2C" )
	PORT_DIPSETTING(    0x90, "1C 2C / 1C 4C" )
	PORT_DIPSETTING(    0xa0, "1C 2C / 1C 5C" )
	PORT_DIPSETTING(    0xb0, "1C 2C / 1C 10C" )
	PORT_DIPSETTING(    0xc0, "1C 2C / 1C 11C" )
	PORT_DIPSETTING(    0xd0, "1C 2C / 1C 12C" )
	PORT_DIPSETTING(    0xe0, "1C 2C / 1C 6C" )
	PORT_DIPSETTING(    0xf0, DEF_STR( Free_Play ) )

	PORT_START("DSW2")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Hard ) )
	PORT_DIPNAME( 0x02, 0x00, "Unknown 2-2" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x02, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x00, "Unknown 2-3" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x00, "Unknown 2-4" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, "Unknown 2-5" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, "Unknown 2-6" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, "Unknown 2-7" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x00, "Freeze" )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )

	PORT_START("P1") /* d804 */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY

	PORT_START("P2") /* d805 */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_COCKTAIL
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL

	PORT_START("SYSTEM") /* d803 */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SERVICE1 )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_SERVICE( 0x20, IP_ACTIVE_HIGH )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
INPUT_PORTS_END

static INPUT_PORTS_START( banbam )
	PORT_START("DSW1")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:1")
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "5" )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("SW1:2")
	PORT_DIPSETTING(    0x02, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Flip_Screen ) ) PORT_DIPLOCATION("SW1:3")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPUNUSED_DIPLOC( 0x08, 0x08, "SW1:4" )
	PORT_DIPNAME( 0xf0, 0x00, "Coin1 / Coin2" ) PORT_DIPLOCATION("SW1:5,6,7,8")
	PORT_DIPSETTING(    0x00, "1C 1C / 1C 1C" )
	PORT_DIPSETTING(    0x10, "2C 1C / 2C 1C" )
	PORT_DIPSETTING(    0x20, "2C 1C / 1C 3C" )
	PORT_DIPSETTING(    0x30, "1C 1C / 1C 2C" )
	PORT_DIPSETTING(    0x40, "1C 1C / 1C 3C" )
	PORT_DIPSETTING(    0x50, "1C 1C / 1C 4C" )
	PORT_DIPSETTING(    0x60, "1C 1C / 1C 5C" )
	PORT_DIPSETTING(    0x70, "1C 1C / 1C 6C" )
	PORT_DIPSETTING(    0x80, "1C 2C / 1C 2C" )
	PORT_DIPSETTING(    0x90, "1C 2C / 1C 4C" )
	PORT_DIPSETTING(    0xa0, "1C 2C / 1C 5C" )
	PORT_DIPSETTING(    0xb0, "1C 2C / 1C 10C" )
	PORT_DIPSETTING(    0xc0, "1C 2C / 1C 11C" )
	PORT_DIPSETTING(    0xd0, "1C 2C / 1C 12C" )
	PORT_DIPSETTING(    0xe0, "1C 2C / 1C 6C" )
	PORT_DIPSETTING(    0xf0, DEF_STR( Free_Play ) )

	PORT_START("DSW2")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SW2:1")
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x06, 0x00, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SW2:2,3")
	PORT_DIPSETTING(    0x00, "20000 50000" )
	PORT_DIPSETTING(    0x02, "20000 80000" )
	PORT_DIPSETTING(    0x04, "20000" )
	PORT_DIPSETTING(    0x06, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x00, "Second Practice" ) PORT_DIPLOCATION("SW2:4")
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPUNUSED_DIPLOC( 0x10, 0x10, "SW2:5" ) /* These four dips are unused according to the manual */
	PORT_DIPUNUSED_DIPLOC( 0x20, 0x20, "SW2:6" )
	PORT_DIPUNUSED_DIPLOC( 0x40, 0x40, "SW2:7" )
	PORT_DIPNAME( 0x80, 0x00, "Freeze" ) PORT_DIPLOCATION("SW2:8") // game stands in a tight loop at $14-$16 -> $866 if this is putted off
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x80, DEF_STR( On ) )

	PORT_START("P1") /* d804 */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_4WAY
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_4WAY
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_4WAY
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_4WAY

	PORT_START("P2") /* d805 */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_COCKTAIL

	PORT_START("SYSTEM") /* d803 */
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SERVICE1 )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_SERVICE( 0x20, IP_ACTIVE_HIGH )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_COIN2 )
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 )
INPUT_PORTS_END

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

static const gfx_layout charlayout =
{
	8,8,    /* 8*8 characters */
	1024,   /* 1024 characters */
	3,      /* 3 bits per pixel */
	{0,8192*8,8192*8*2},
	{7,6,5,4,3,2,1,0},
	{8*0, 8*1, 8*2, 8*3, 8*4, 8*5, 8*6, 8*7},
	8*8
};

static const gfx_layout spritelayout =
{
	16,16,  /* 16*16 characters */
	256,    /* 256 characters */
	3,      /* 3 bits per pixel */
	{8192*8*2,8192*8,0},
	{7,6,5,4,3,2,1,0,
		8*16+7,8*16+6,8*16+5,8*16+4,8*16+3,8*16+2,8*16+1,8*16+0},
	{8*0, 8*1, 8*2, 8*3, 8*4, 8*5, 8*6, 8*7,
		8*8,8*9,8*10,8*11,8*12,8*13,8*14,8*15},
	8*8*4
};

static GFXDECODE_START( gfx_markham )
	GFXDECODE_ENTRY( "gfx2", 0x0000, charlayout,   512, 64 )
	GFXDECODE_ENTRY( "gfx1", 0x0000, spritelayout, 0,   64 )
GFXDECODE_END

MACHINE_CONFIG_START(markham_state::markham)

	/* basic machine hardware */
	MCFG_DEVICE_ADD("maincpu", Z80, CPU_CLOCK/2) /* 4.000MHz */
	MCFG_DEVICE_PROGRAM_MAP(markham_master_map)
	MCFG_DEVICE_VBLANK_INT_DRIVER("screen", markham_state, irq0_line_hold)

	MCFG_DEVICE_ADD("subcpu", Z80, CPU_CLOCK/2) /* 4.000MHz */
	MCFG_DEVICE_PROGRAM_MAP(markham_slave_map)
	MCFG_DEVICE_VBLANK_INT_DRIVER("screen", markham_state, irq0_line_hold)

	MCFG_QUANTUM_TIME(attotime::from_hz(6000))

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
	MCFG_SCREEN_UPDATE_DRIVER(markham_state, screen_update_markham)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_markham)
	MCFG_PALETTE_ADD("palette", 1024)
	MCFG_PALETTE_INDIRECT_ENTRIES(256)
	MCFG_PALETTE_INIT_OWNER(markham_state, markham)

	/* sound hardware */
	SPEAKER(config, "mono").front_center();

	MCFG_DEVICE_ADD("sn1", SN76496, CPU_CLOCK/2)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.75)

	MCFG_DEVICE_ADD("sn2", SN76496, CPU_CLOCK/2)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.75)
MACHINE_CONFIG_END

MACHINE_CONFIG_START(markham_state::strnskil)

	markham(config);
	/* basic machine hardware */
	MCFG_DEVICE_REMOVE("maincpu")
	MCFG_DEVICE_ADD("maincpu", Z80, CPU_CLOCK/2) /* 4.000MHz */
	MCFG_DEVICE_PROGRAM_MAP(strnskil_master_map)
	MCFG_TIMER_DRIVER_ADD_SCANLINE("scantimer", markham_state, strnskil_scanline, "screen", 0, 1)

	MCFG_DEVICE_REMOVE("subcpu")
	MCFG_DEVICE_ADD("subcpu", Z80, CPU_CLOCK/2) /* 4.000MHz */
	MCFG_DEVICE_PROGRAM_MAP(strnskil_slave_map)
	MCFG_DEVICE_PERIODIC_INT_DRIVER(markham_state, irq0_line_hold, 2*(PIXEL_CLOCK/HTOTAL/VTOTAL))

	/* video hardware */
	MCFG_SCREEN_MODIFY("screen")
	MCFG_SCREEN_UPDATE_DRIVER(markham_state, screen_update_strnskil)

	MCFG_VIDEO_START_OVERRIDE(markham_state, strnskil)

	/* sound hardware */
	MCFG_DEVICE_MODIFY("sn1")
	MCFG_DEVICE_CLOCK(CPU_CLOCK/4)
MACHINE_CONFIG_END

MACHINE_CONFIG_START(markham_state::banbam)

	strnskil(config);
	MCFG_DEVICE_ADD("mcu", MB8841, CPU_CLOCK/2) /* 4.000MHz */
	//  MCFG_MB88XX_READ_K_CB(READ8(*this, markham_state, mcu_portk_r))
	//  MCFG_MB88XX_READ_R0_CB(READ8(*this, markham_state, mcu_portr0_r))
	//  MCFG_MB88XX_WRITE_R0_CB(WRITE8(*this, markham_state, mcu_portr0_w))
	MCFG_DEVICE_DISABLE()
MACHINE_CONFIG_END

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

ROM_START( markham )
	ROM_REGION( 0x10000, "maincpu", 0 ) /* main CPU */
	ROM_LOAD( "tv3.9",    0x0000, 0x2000, CRC(59391637) SHA1(e0cfe49a5591d6a6e64c3277319a19235b0ee6ea) )
	ROM_LOAD( "tvg4.10",  0x2000, 0x2000, CRC(1837bcce) SHA1(50e1ae0a4937f09a3dced48bb12f57cee846487a) )
	ROM_LOAD( "tvg5.11",  0x4000, 0x2000, CRC(651da602) SHA1(9f33d6ea0526af9be8ac9210910ea768da825ee5) )

	ROM_REGION( 0x10000, "subcpu", 0 ) /* sub CPU */
	ROM_LOAD( "tvg1.5",   0x0000, 0x2000, CRC(c5299766) SHA1(a6c903088ffd6c5ae0ba7ff50c8509a185f88220) )
	ROM_LOAD( "tvg2.6",   0x4000, 0x2000, CRC(b216300a) SHA1(036fafd0277b3422cf491db77748358da1ecfb43) )

	ROM_REGION( 0x6000, "gfx1", 0 ) /* sprite */
	ROM_LOAD( "tvg6.84",  0x0000, 0x2000, CRC(ab933ae5) SHA1(d2bdbc35d751480ddf8b89b90063510684b00db2) )
	ROM_LOAD( "tvg7.85",  0x2000, 0x2000, CRC(ce8edda7) SHA1(5312754aec20791398de57f08857d4097a7cfc2c) )
	ROM_LOAD( "tvg8.86",  0x4000, 0x2000, CRC(74d1536a) SHA1(ff2efbbe1420282643558a65bfa5fd278cdaf135) )

	ROM_REGION( 0x6000, "gfx2", 0 ) /* bg */
	ROM_LOAD( "tvg9.87",  0x0000, 0x2000, CRC(42168675) SHA1(d2cce79a05ca7fda9347630fe0045a2d8182025d) )
	ROM_LOAD( "tvg10.88", 0x2000, 0x2000, CRC(fa9feb67) SHA1(669c6e1defc33541c36d4deb9667b67254f53a37) )
	ROM_LOAD( "tvg11.89", 0x4000, 0x2000, CRC(71f3dd49) SHA1(8fecb6b76907c592d545dafeaa47cf765513b3fe) )

	ROM_REGION( 0x0700, "proms", 0 ) /* color PROMs */
	ROM_LOAD( "14-3.99",  0x0000, 0x0100, CRC(89d09126) SHA1(1f78f3b3ef8c6ba9c00a58ae89837d9a92e5078f) ) /* R */
	ROM_LOAD( "14-4.100", 0x0100, 0x0100, CRC(e1cafe6c) SHA1(8c37c3829bf1b96690fb853a2436f1b5e8d45e8c) ) /* G */
	ROM_LOAD( "14-5.101", 0x0200, 0x0100, CRC(2d444fa6) SHA1(66b64133ca740686bedd33bafd20a3f9f3df97d4) ) /* B */
	ROM_LOAD( "14-1.61",  0x0300, 0x0200, CRC(3ad8306d) SHA1(877f1d58cb8da9098ec71a7c7aec633dbf9e76e6) ) /* sprite */
	ROM_LOAD( "14-2.115", 0x0500, 0x0200, CRC(12a4f1ff) SHA1(375e37d7162053d45da66eee23d66bd432303c1c) ) /* bg */
ROM_END

ROM_START( strnskil )
	ROM_REGION( 0x10000, "maincpu", 0 ) /* main CPU */
	ROM_LOAD( "tvg3.7",    0x0000, 0x2000, CRC(31fd793a) SHA1(b86efe8ea60edf414a23fb6abc09db691c085fe9) )
	ROM_CONTINUE(          0x8000, 0x2000 )
	ROM_LOAD( "tvg4.8",    0x2000, 0x2000, CRC(c58315b5) SHA1(2039cd89ef59d05f353f6c367fa851c0f60cdc4a) )
	ROM_LOAD( "tvg5.9",    0x4000, 0x2000, CRC(29e7ded5) SHA1(6eae5988139f22c3ff166192e4fda77db38a79bc) )
	ROM_LOAD( "tvg6.10",   0x6000, 0x2000, CRC(8b126a4b) SHA1(68b617c5dc120c777e152919cba9daeaf3ceac5f) )

	ROM_REGION( 0x10000, "subcpu", 0 ) /* sub CPU */
	ROM_LOAD( "tvg1.2",    0x0000, 0x2000, CRC(b586b753) SHA1(7c9891fb279b1323c059ffdcf7c009bf971037be) )
	ROM_LOAD( "tvg2.3",    0x2000, 0x2000, CRC(8bd71bb6) SHA1(cc35e1e4cbb893ab04f1b6ceef0a050243e3b462) )

	ROM_REGION( 0x6000, "gfx1", 0 ) /* sprite */
	ROM_LOAD( "tvg7.90",   0x0000, 0x2000, CRC(ee3bd593) SHA1(398e426e53695cc184d5a2750fd32a1c2c68bf30) )
	ROM_LOAD( "tvg8.92",   0x2000, 0x2000, CRC(1b265360) SHA1(fbc64c504639106c1813bf91bd31bda1ce4c7ffe) )
	ROM_LOAD( "tvg9.94",   0x4000, 0x2000, CRC(776c7ca6) SHA1(23fd1ac15395822b318db4435e48dd4e0e3e61de) )

	ROM_REGION( 0x6000, "gfx2", 0 ) /* bg */
	ROM_LOAD( "tvg12.102", 0x0000, 0x2000, CRC(68b9d888) SHA1(7a4071fe882c1949979f97a020d7c6e95643ef42) )
	ROM_LOAD( "tvg11.101", 0x2000, 0x2000, CRC(7f2179ff) SHA1(24fab1f4430ae883bc1f477d3df7643e06c67349) )
	ROM_LOAD( "tvg10.100", 0x4000, 0x2000, CRC(321ad963) SHA1(9b50fbf0c3b4ce7ce3c68339b99a2ccadef4646f) )

	ROM_REGION( 0x0800, "proms", 0 ) /* color PROMs */
	ROM_LOAD( "15-3.prm",  0x0000, 0x0100, CRC(dbcd3bec) SHA1(1baeec277b16c82b67e10da9d4c84cf383ef4a82) ) /* R */
	ROM_LOAD( "15-4.prm",  0x0100, 0x0100, CRC(9eb7b6cf) SHA1(86451e8a510f8cfbc0be7d4e7bb1ee7dfd67f1f4) ) /* G */
	ROM_LOAD( "15-5.prm",  0x0200, 0x0100, CRC(9b30a7f3) SHA1(a0aefc2c8325b95ea227e404583d14622b04a3b9) ) /* B */
	ROM_LOAD( "15-1.prm",  0x0300, 0x0200, CRC(d4f5b3d7) SHA1(9a244c77a752df655ff756e063d56c2c767e37d9) ) /* sprite */
	ROM_LOAD( "15-2.prm",  0x0500, 0x0200, CRC(cdffede9) SHA1(3ecdf91e3f78eb6cdd3a6f58d1a89d448a676c52) ) /* bg */

	ROM_REGION( 0x0100, "scroll_prom", 0 ) /* scroll control PROM */
	ROM_LOAD( "15-6.prm",  0x0000, 0x0100, CRC(ec4faf5b) SHA1(7ebbf50807d04105ebadec91bded069408e399ba) )
ROM_END

ROM_START( guiness )
	ROM_REGION( 0x10000, "maincpu", 0 ) /* main CPU */
	ROM_LOAD( "tvg3.15",   0x0000, 0x2000, CRC(3a605ad8) SHA1(f6e2dd4989fdb68bc55857f5a8f06601416139d5) )
	ROM_CONTINUE(          0x8000, 0x2000 )
	ROM_LOAD( "tvg4.8",    0x2000, 0x2000, CRC(c58315b5) SHA1(2039cd89ef59d05f353f6c367fa851c0f60cdc4a) )
	ROM_LOAD( "tvg5.9",    0x4000, 0x2000, CRC(29e7ded5) SHA1(6eae5988139f22c3ff166192e4fda77db38a79bc) )
	ROM_LOAD( "tvg6.10",   0x6000, 0x2000, CRC(8b126a4b) SHA1(68b617c5dc120c777e152919cba9daeaf3ceac5f) )

	ROM_REGION( 0x10000, "subcpu", 0 ) /* sub CPU */
	ROM_LOAD( "tvg1.2",    0x0000, 0x2000, CRC(b586b753) SHA1(7c9891fb279b1323c059ffdcf7c009bf971037be) )
	ROM_LOAD( "tvg2.3",    0x2000, 0x2000, CRC(8bd71bb6) SHA1(cc35e1e4cbb893ab04f1b6ceef0a050243e3b462) )

	ROM_REGION( 0x6000, "gfx1", 0 ) /* sprite */
	ROM_LOAD( "tvg7.90",   0x0000, 0x2000, CRC(ee3bd593) SHA1(398e426e53695cc184d5a2750fd32a1c2c68bf30) )
	ROM_LOAD( "tvg8.92",   0x2000, 0x2000, CRC(1b265360) SHA1(fbc64c504639106c1813bf91bd31bda1ce4c7ffe) )
	ROM_LOAD( "tvg9.94",   0x4000, 0x2000, CRC(776c7ca6) SHA1(23fd1ac15395822b318db4435e48dd4e0e3e61de) )

	ROM_REGION( 0x6000, "gfx2", 0 ) /* bg */
	ROM_LOAD( "=tvg12.15", 0x0000, 0x2000, CRC(a82c923d) SHA1(2bd2b028d782fac18f2fe9c9ef73ce0af67db347) )
	ROM_LOAD( "tvg11.15",  0x2000, 0x2000, CRC(d432c96f) SHA1(0d4b3af778dbd40bc26bad4c673a9ce1ef537c04) )
	ROM_LOAD( "tvg10.15",  0x4000, 0x2000, CRC(a53959d6) SHA1(cdf7acf1a75d83b259948c482f06543624a695a3) )

	ROM_REGION( 0x0800, "proms", 0 ) /* color PROMs */
	ROM_LOAD( "15-3.prm",  0x0000, 0x0100, CRC(dbcd3bec) SHA1(1baeec277b16c82b67e10da9d4c84cf383ef4a82) ) /* R */
	ROM_LOAD( "15-4.prm",  0x0100, 0x0100, CRC(9eb7b6cf) SHA1(86451e8a510f8cfbc0be7d4e7bb1ee7dfd67f1f4) ) /* G */
	ROM_LOAD( "15-5.prm",  0x0200, 0x0100, CRC(9b30a7f3) SHA1(a0aefc2c8325b95ea227e404583d14622b04a3b9) ) /* B */
	ROM_LOAD( "15-1.prm",  0x0300, 0x0200, CRC(d4f5b3d7) SHA1(9a244c77a752df655ff756e063d56c2c767e37d9) ) /* sprite */
	ROM_LOAD( "15-2.prm",  0x0500, 0x0200, CRC(cdffede9) SHA1(3ecdf91e3f78eb6cdd3a6f58d1a89d448a676c52) ) /* bg */

	ROM_REGION( 0x0100, "scroll_prom", 0 ) /* scroll control PROM */
	ROM_LOAD( "15-6.prm",  0x0000, 0x0100, CRC(ec4faf5b) SHA1(7ebbf50807d04105ebadec91bded069408e399ba) )
ROM_END

ROM_START( banbam )
	ROM_REGION( 0x10000, "maincpu", 0 ) /* main CPU */
	ROM_LOAD( "ban-rom2.ic7",    0x0000, 0x2000, CRC(a5aeef6e) SHA1(92c1ad6ccb96b723e122899150e3c1855c5017b8) )
	ROM_CONTINUE(                0x8000, 0x2000 )
	ROM_LOAD( "ban-rom3.ic8",    0x2000, 0x2000, CRC(f91472bf) SHA1(94988b7bf2be3d3704a802db544070251d6c6a9c) )
	ROM_LOAD( "ban-rom4.ic9",    0x4000, 0x2000, CRC(436a09ef) SHA1(7287f741fbf3ac43d5c46b2f43ec4439cb3d0d56) )
	ROM_LOAD( "ban-rom5.ic10",   0x6000, 0x2000, CRC(45205f86) SHA1(a11d10beb21519f797c902b8a18775c8e2aa0fae) )

	ROM_REGION( 0x10000, "subcpu", 0 ) /* sub CPU */
	ROM_LOAD( "ban-rom1.ic2",    0x0000, 0x2000, CRC(e36009f6) SHA1(72c485e8c19fbfc9c850094cfd87f1055154c0c5) )

	ROM_REGION( 0x6000, "gfx1", 0 ) /* sprite */
	ROM_LOAD( "ban-rom6.ic90",   0x0000, 0x2000, CRC(41fc44df) SHA1(1c4f21cdc423078fab58370d5245a13292bf7fe6) )
	ROM_LOAD( "ban-rom7.ic92",   0x2000, 0x2000, CRC(8b429c5b) SHA1(505796eac2c8dd84f9ed29a6227b3243f81ec072) )
	ROM_LOAD( "ban-rom8.ic94",   0x4000, 0x2000, CRC(76c02d6b) SHA1(9ef7585da5376cdd604afee281594e24c69addf2) )

	ROM_REGION( 0x6000, "gfx2", 0 ) /* bg */
	ROM_LOAD( "ban-rom11.ic102", 0x0000, 0x2000, CRC(aa827c57) SHA1(87d0c5e7df6ce40b0b2fc8f4b9dd43d4b7b0bc2e) )
	ROM_LOAD( "ban-rom10.ic101", 0x2000, 0x2000, CRC(51bd1c5c) SHA1(f714a3168d59cb4f8512440f7a2e27b6e0726a39) )
	ROM_LOAD( "ban-rom9.ic100",  0x4000, 0x2000, CRC(c0a5a4c8) SHA1(7f0978669218982d379a5d72c6198a33a8213ab5) )

	ROM_REGION( 0x0700, "proms", 0 ) /* color PROMs */
	ROM_LOAD( "16-3.66",         0x0000, 0x0100, CRC(dbcd3bec) SHA1(1baeec277b16c82b67e10da9d4c84cf383ef4a82) ) /* R       Prom type 24s10 */
	ROM_LOAD( "16-4.67",         0x0100, 0x0100, CRC(9eb7b6cf) SHA1(86451e8a510f8cfbc0be7d4e7bb1ee7dfd67f1f4) ) /* G       Prom type 24s10 */
	ROM_LOAD( "16-5.68",         0x0200, 0x0100, CRC(9b30a7f3) SHA1(a0aefc2c8325b95ea227e404583d14622b04a3b9) ) /* B       Prom type 24s10 */
	ROM_LOAD( "16-1.148",        0x0300, 0x0200, CRC(777e2770) SHA1(7f4ef42ab4e0546c2932d498cf573bd4f4296db7) ) /* sprite  Prom type mb7124h */
	ROM_LOAD( "16-2.97",         0x0500, 0x0200, CRC(7f95d4b2) SHA1(68dc311739a4d5d72f4cfbace27f3a82f05316ff) ) /* bg      Prom type mb7124h */

	ROM_REGION( 0x0100, "scroll_prom", 0 ) /* scroll control PROM */
	ROM_LOAD( "16-6.59",         0x0000, 0x0100, CRC(ec4faf5b) SHA1(7ebbf50807d04105ebadec91bded069408e399ba) ) /* Prom type 24s10 */

	ROM_REGION( 0x2000, "prot_data", 0 ) /* protection, data used with Fujitsu MB8841 4-Bit MCU */
	ROM_LOAD( "ban-rom12.ic2",   0x0000, 0x2000, CRC(044bb2f6) SHA1(829b2152740061e0506c7504885d8404fb8fe360) )

	ROM_REGION(0x800, "mcu", 0) /* Fujitsu MB8841 4-Bit MCU internal ROM */
	ROM_LOAD("sun-8212.ic3",     0x000,  0x800,  BAD_DUMP CRC(8869611e) SHA1(c6443f3bcb0cdb4d7b1b19afcbfe339c300f36aa))
ROM_END

ROM_START( pettanp )
	ROM_REGION( 0x10000, "maincpu", 0 ) /* main CPU */
	ROM_LOAD( "tvg2-16a.7",  0x0000, 0x2000, CRC(4cbbbd01) SHA1(3905cf9e9d324bb23688ab29c98d71529d3dbf0c) )
	ROM_CONTINUE(            0x8000, 0x2000 )
	ROM_LOAD( "tvg3-16a.8",  0x2000, 0x2000, CRC(aaa0420f) SHA1(aa7ead51002f8b1bbefd07ff23b9064804fc31b3) )
	ROM_LOAD( "tvg4-16a.9",  0x4000, 0x2000, CRC(43306369) SHA1(1eadebd3d962da49fd204eff8692f1e1a1e3cc98) )
	ROM_LOAD( "tvg5-16a.10", 0x6000, 0x2000, CRC(da9c635f) SHA1(3c084ad159dbabfd02a9772489c3193852d135b7) )

	ROM_REGION( 0x10000, "subcpu", 0 ) /* sub CPU */
	ROM_LOAD( "tvg1-16.2",   0x0000, 0x2000, CRC(e36009f6) SHA1(72c485e8c19fbfc9c850094cfd87f1055154c0c5) )

	ROM_REGION( 0x6000, "gfx1", 0 ) /* sprite */
	ROM_LOAD( "tvg6-16.90",  0x0000, 0x2000, CRC(6905d9d5) SHA1(586bf72bab5ab6e3e319c925decc16d7f3711af1) )
	ROM_LOAD( "tvg7-16.92",  0x2000, 0x2000, CRC(40d02bfd) SHA1(2f6ca8197048318f7900b56169aba4c9fdf48693) )
	ROM_LOAD( "tvg8-16.94",  0x4000, 0x2000, CRC(b18a2244) SHA1(168061e050530e6a5bc78c14a64e635370256dfd) )

	ROM_REGION( 0x6000, "gfx2", 0 ) /* bg */
	ROM_LOAD( "tvg11-16.102",0x0000, 0x2000, CRC(327b7a29) SHA1(4b8d57607c4a1e84c630c38eba3fa90b5496dcde) )
	ROM_LOAD( "tvg10-16.101",0x2000, 0x2000, CRC(624ac061) SHA1(9d479a8a256a8ff37c00bc7449b11357f9fe6cdc) )
	ROM_LOAD( "tvg9-16.100", 0x4000, 0x2000, CRC(c477e74c) SHA1(864eddcd9c817aeecb09423071f87d3b39eb5fc4) )

	ROM_REGION( 0x0700, "proms", 0 ) /* color PROMs */
	ROM_LOAD( "16-3.66",     0x0000, 0x0100, CRC(dbcd3bec) SHA1(1baeec277b16c82b67e10da9d4c84cf383ef4a82) ) /* R       Prom type 24s10 */
	ROM_LOAD( "16-4.67",     0x0100, 0x0100, CRC(9eb7b6cf) SHA1(86451e8a510f8cfbc0be7d4e7bb1ee7dfd67f1f4) ) /* G       Prom type 24s10 */
	ROM_LOAD( "16-5.68",     0x0200, 0x0100, CRC(9b30a7f3) SHA1(a0aefc2c8325b95ea227e404583d14622b04a3b9) ) /* B       Prom type 24s10 */
	ROM_LOAD( "16-1.148",    0x0300, 0x0200, CRC(777e2770) SHA1(7f4ef42ab4e0546c2932d498cf573bd4f4296db7) ) /* sprite  Prom type mb7124h */
	ROM_LOAD( "16-2.97",     0x0500, 0x0200, CRC(7f95d4b2) SHA1(68dc311739a4d5d72f4cfbace27f3a82f05316ff) ) /* bg      Prom type mb7124h */

	ROM_REGION( 0x0100, "scroll_prom", 0 ) /* scroll control PROM */
	ROM_LOAD( "16-6.59",     0x0000, 0x0100, CRC(ec4faf5b) SHA1(7ebbf50807d04105ebadec91bded069408e399ba) ) /* Prom type 24s10 */

	ROM_REGION( 0x1000, "prot_data", 0 ) /* protection data used with Fujitsu MB8841 4-Bit MCU */
	ROM_LOAD( "tvg12-16.2",  0x0000, 0x1000, CRC(3abc6ba8) SHA1(15e0b0f9d068f6094e2be4f4f1dea0ff6e85686b) )

	ROM_REGION(0x800, "mcu", 0) /* Fujitsu MB8841 4-Bit MCU internal ROM */
	ROM_LOAD("sun-8212.ic3", 0x000,  0x800,  NO_DUMP)
ROM_END

void markham_state::init_banbam()
{
	/* Fujitsu MB8841 4-Bit MCU comms */
	m_maincpu->space(AS_PROGRAM).install_read_handler(0xd806, 0xd806, read8_delegate(FUNC(markham_state::banbam_protection_r), this));
	m_maincpu->space(AS_PROGRAM).install_write_handler(0xd80d, 0xd80d, write8_delegate(FUNC(markham_state::protection_w), this));
}

void markham_state::init_pettanp()
{
//  AM_RANGE(0xd80c, 0xd80c) AM_WRITENOP     /* protection reset? */
//  AM_RANGE(0xd80d, 0xd80d) AM_WRITE(protection_w) /* protection data write (pettanp) */
//  AM_RANGE(0xd806, 0xd806) AM_READ(protection_r) /* protection data read (pettanp) */

	/* Fujitsu MB8841 4-Bit MCU comms */
	m_maincpu->space(AS_PROGRAM).install_read_handler(0xd806, 0xd806, read8_delegate(FUNC(markham_state::pettanp_protection_r),this));
	m_maincpu->space(AS_PROGRAM).install_write_handler(0xd80d, 0xd80d, write8_delegate(FUNC(markham_state::protection_w),this));
}

/* Markham hardware */
GAME( 1983, markham,  0,        markham,  markham,  markham_state, empty_init,    ROT0, "Sun Electronics", "Markham", MACHINE_SUPPORTS_SAVE )

/* Strength & Skill hardware */
GAME( 1984, strnskil, 0,        strnskil, strnskil, markham_state, empty_init,    ROT0, "Sun Electronics", "Strength & Skill", MACHINE_SUPPORTS_SAVE)
GAME( 1984, guiness,  strnskil, strnskil, strnskil, markham_state, empty_init,    ROT0, "Sun Electronics", "The Guiness (Japan)", MACHINE_SUPPORTS_SAVE)
GAME( 1984, banbam,   0,        banbam,   banbam,   markham_state, init_banbam,   ROT0, "Sun Electronics", "BanBam", MACHINE_UNEMULATED_PROTECTION | MACHINE_SUPPORTS_SAVE)
GAME( 1984, pettanp,  banbam,   strnskil, banbam,   markham_state, init_pettanp,  ROT0, "Sun Electronics", "Pettan Pyuu (Japan)", MACHINE_UNEMULATED_PROTECTION | MACHINE_SUPPORTS_SAVE)