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// license:BSD-3-Clause
// copyright-holders:Nicola Salmoria
/***************************************************************************

Mahjong Kyou Jidai (麻雀狂時代)     (c)1986 Sanritsu

CPU: Z80
I/O: NEC D8255AC*2
Sound   :SN76489*2 CUSTOM
OSC :10MHz ??MHz

driver by Nicola Salmoria

TODO:
- Dip switches.

- Several imperfections with sprites rendering:
  - some sprites are misplaced by 1pixel vertically
  - during the tile distribution at the beginning of a match, there's something
    wrong with the stacks moved around, they are misaligned and something is
    missing.

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

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

#include "cpu/z80/z80.h"
#include "machine/i8255.h"
#include "sound/sn76496.h"
#include "screen.h"
#include "speaker.h"


WRITE8_MEMBER(mjkjidai_state::adpcm_w)
{
	m_adpcm_pos = (data & 0x07) * 0x1000 * 2;
	m_adpcm_end = m_adpcm_pos + 0x1000 * 2;
	m_msm->reset_w(0);
}

WRITE_LINE_MEMBER(mjkjidai_state::adpcm_int)
{
	if (m_adpcm_pos >= m_adpcm_end)
	{
		m_msm->reset_w(1);
	}
	else
	{
		uint8_t const data = m_adpcmrom[m_adpcm_pos / 2];
		m_msm->data_w(m_adpcm_pos & 1 ? data & 0xf : data >> 4);
		m_adpcm_pos++;
	}
}

CUSTOM_INPUT_MEMBER(mjkjidai_state::keyboard_r)
{
	int res = 0x3f;

	for (int i = 0; i < 12; i++)
	{
		if (~m_keyb & (0x800 >> i))
		{
			res = m_row[i]->read();
			break;
		}
	}

	return res;
}

WRITE8_MEMBER(mjkjidai_state::keyboard_select_lo_w)
{
	m_keyb = (m_keyb & 0xff00) | (data);
}

WRITE8_MEMBER(mjkjidai_state::keyboard_select_hi_w)
{
	m_keyb = (m_keyb & 0x00ff) | (data << 8);
}


void mjkjidai_state::mjkjidai_map(address_map &map)
{
	map(0x0000, 0x7fff).rom();
	map(0x8000, 0xbfff).bankr("bank1");
	map(0xc000, 0xcfff).ram();
	map(0xd000, 0xdfff).ram().share("nvram");   // cleared and initialized on startup if bit 6 of port 00 is 0
	map(0xe000, 0xf7ff).ram().w(this, FUNC(mjkjidai_state::mjkjidai_videoram_w)).share("videoram");
}

void mjkjidai_state::mjkjidai_io_map(address_map &map)
{
	map.global_mask(0xff);
	map(0x00, 0x03).rw("ppi1", FUNC(i8255_device::read), FUNC(i8255_device::write));
	map(0x10, 0x13).rw("ppi2", FUNC(i8255_device::read), FUNC(i8255_device::write));
	map(0x20, 0x20).w("sn1", FUNC(sn76489_device::write));
	map(0x30, 0x30).w("sn2", FUNC(sn76489_device::write));
	map(0x40, 0x40).w(this, FUNC(mjkjidai_state::adpcm_w));
}


static INPUT_PORTS_START( mjkjidai )
	PORT_START("DSW1")
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Flip_Screen ) ) PORT_DIPLOCATION("SW1:1")
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:2")
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:3")
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:4")
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:5")
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, "Test Mode" ) PORT_DIPLOCATION("SW1:6")
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:7")
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW1:8")
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START("DSW2")
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:1")
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:2")
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:3")
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:4")
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:5")
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:6")
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:7")
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:8")
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START("IN2")
	PORT_BIT( 0x0f, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x20, 0x20, "Statistics" )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("KEYBOARD")
	PORT_BIT( 0x3f, IP_ACTIVE_HIGH, IPT_CUSTOM) PORT_CUSTOM_MEMBER(DEVICE_SELF, mjkjidai_state, keyboard_r, nullptr)
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_MEMORY_RESET )   // reinitialize NVRAM and reset the game
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START("ROW.0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_A )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_B )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_C )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_D )
	PORT_BIT( 0x30, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_E )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_F )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_G )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_H )
	PORT_BIT( 0x30, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_I )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_J )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_K )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_L )
	PORT_BIT( 0x30, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.3")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_M )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_N )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_CHI )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_PON )
	PORT_BIT( 0x30, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.4")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_KAN )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_REACH )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_RON )
	PORT_BIT( 0x38, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.5")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x3e, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.6")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_A ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_B ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_C ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_D ) PORT_PLAYER(2)
	PORT_BIT( 0x30, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.7")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_E ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_F ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_G ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_H ) PORT_PLAYER(2)
	PORT_BIT( 0x30, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.8")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_I ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_J ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_K ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_L ) PORT_PLAYER(2)
	PORT_BIT( 0x30, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.9")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_M ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_N ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_CHI ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_MAHJONG_PON ) PORT_PLAYER(2)
	PORT_BIT( 0x30, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.10")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_MAHJONG_KAN ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_MAHJONG_REACH ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_MAHJONG_RON ) PORT_PLAYER(2)
	PORT_BIT( 0x38, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("ROW.11")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x3e, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END



static const gfx_layout charlayout =
{
	8,8,
	RGN_FRAC(1,3),
	3,
	{ RGN_FRAC(0,3), RGN_FRAC(1,3), RGN_FRAC(2,3) },
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
	8*8
};

static const gfx_layout spritelayout =
{
	16,16,
	RGN_FRAC(1,3),
	3,
	{ RGN_FRAC(0,3), RGN_FRAC(1,3), RGN_FRAC(2,3) },
	{ 0, 1, 2, 3, 4, 5, 6, 7,
		8*8+0, 8*8+1, 8*8+2, 8*8+3, 8*8+4, 8*8+5, 8*8+6, 8*8+7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
		16*8, 17*8, 18*8, 19*8, 20*8, 21*8, 22*8, 23*8 },
	32*8
};

static GFXDECODE_START( gfx_mjkjidai )
	GFXDECODE_ENTRY( "gfx1", 0, charlayout,   0, 32 )
	GFXDECODE_ENTRY( "gfx1", 0, spritelayout, 0, 16 )
GFXDECODE_END

WRITE_LINE_MEMBER(mjkjidai_state::vblank_irq)
{
	if (state && m_nmi_enable)
		m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);
}

void mjkjidai_state::machine_start()
{
	membank("bank1")->configure_entries(0, 4, memregion("maincpu")->base() + 0x8000, 0x4000);

	save_item(NAME(m_adpcm_pos));
	save_item(NAME(m_adpcm_end));
	save_item(NAME(m_keyb));
	save_item(NAME(m_nmi_enable));
	save_item(NAME(m_display_enable));
}

void mjkjidai_state::machine_reset()
{
	m_adpcm_pos = m_adpcm_end = 0;
}

MACHINE_CONFIG_START(mjkjidai_state::mjkjidai)

	/* basic machine hardware */
	MCFG_DEVICE_ADD("maincpu", Z80,10000000/2) /* 5 MHz ??? */
	MCFG_DEVICE_PROGRAM_MAP(mjkjidai_map)
	MCFG_DEVICE_IO_MAP(mjkjidai_io_map)

	MCFG_NVRAM_ADD_NO_FILL("nvram")

	MCFG_DEVICE_ADD("ppi1", I8255A, 0)
	MCFG_I8255_IN_PORTA_CB(IOPORT("KEYBOARD"))
	MCFG_I8255_OUT_PORTB_CB(WRITE8(*this, mjkjidai_state, keyboard_select_lo_w))
	MCFG_I8255_OUT_PORTC_CB(WRITE8(*this, mjkjidai_state, keyboard_select_hi_w))
	MCFG_I8255_IN_PORTC_CB(IOPORT("IN2"))

	MCFG_DEVICE_ADD("ppi2", I8255A, 0)
	MCFG_I8255_OUT_PORTA_CB(WRITE8(*this, mjkjidai_state, mjkjidai_ctrl_w))  // rom bank, coin counter, flip screen etc
	MCFG_I8255_IN_PORTB_CB(IOPORT("DSW1"))
	MCFG_I8255_IN_PORTC_CB(IOPORT("DSW2"))

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MCFG_SCREEN_SIZE(64*8, 32*8)
	MCFG_SCREEN_VISIBLE_AREA(3*8, 61*8-1, 2*8, 30*8-1)
	MCFG_SCREEN_UPDATE_DRIVER(mjkjidai_state, screen_update_mjkjidai)
	MCFG_SCREEN_PALETTE("palette")
	MCFG_SCREEN_VBLANK_CALLBACK(WRITELINE(*this, mjkjidai_state, vblank_irq))

	MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_mjkjidai)
	MCFG_PALETTE_ADD_RRRRGGGGBBBB_PROMS("palette", "proms", 0x100)

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

	MCFG_DEVICE_ADD("sn1", SN76489, 10000000/4)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)

	MCFG_DEVICE_ADD("sn2", SN76489, 10000000/4)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)

	MCFG_DEVICE_ADD("msm", MSM5205, 384000)
	MCFG_MSM5205_VCLK_CB(WRITELINE(*this, mjkjidai_state, adpcm_int))
	MCFG_MSM5205_PRESCALER_SELECTOR(S64_4B)  /* 6kHz */
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_CONFIG_END



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

  Game driver(s)

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

ROM_START( mjkjidai )
	ROM_REGION( 0x18000, "maincpu", 0 )
	ROM_LOAD( "mkj-00.14g",   0x00000, 0x8000, CRC(188a27e9) SHA1(2306ad112aaf8d9ac77a89d0e4c3a17f36945130) )
	ROM_LOAD( "mkj-01.15g",   0x08000, 0x8000, CRC(a6a5e9c7) SHA1(974f4343f4347a0065f833c1fdcc47e96d42932d) )
	ROM_LOAD( "mkj-02.16g",   0x10000, 0x8000, CRC(fb312927) SHA1(b71db72ba881474f9c2523d0617757889af9f28e) )

	ROM_REGION( 0x30000, "gfx1", 0 )
	ROM_LOAD( "mkj-20.4e",    0x00000, 0x8000, CRC(8fc66bce) SHA1(4f1006bc5168e39eb7a1f6a4b3c3f5aaa3c1c7dd) )
	ROM_LOAD( "mkj-21.5e",    0x08000, 0x8000, CRC(4dd41a9b) SHA1(780f9e5bbf9dc47e931cebd67d89122209f573a2) )
	ROM_LOAD( "mkj-22.6e",    0x10000, 0x8000, CRC(70ac2bd7) SHA1(8ddb00a24f2b49b9eb1a70ae95fcd6bb0820be50) )
	ROM_LOAD( "mkj-23.7e",    0x18000, 0x8000, CRC(f9313dde) SHA1(787577ccdc7e7030439159c194ca6719df80ad2f) )
	ROM_LOAD( "mkj-24.8e",    0x20000, 0x8000, CRC(aa5130d0) SHA1(1dbaf2ba9ed97c22dc74d12471fc54b0f7ce2f25) )
	ROM_LOAD( "mkj-25.9e",    0x28000, 0x8000, CRC(c12c3fe0) SHA1(0acd3f8e8d849a09b187cd83852593a64aa87451) )

	ROM_REGION( 0x0300, "proms", 0 )
	ROM_LOAD( "mkj-60.13a",   0x0000, 0x0100, CRC(5dfaba60) SHA1(7c821a5e951ccf9d86d98aa8dc75d847ab579496) )
	ROM_LOAD( "mkj-61.14a",   0x0100, 0x0100, CRC(e9e90d55) SHA1(a14177df3bab59e0f9ce41094e03ef3593329149) )
	ROM_LOAD( "mkj-62.15a",   0x0200, 0x0100, CRC(934f1d53) SHA1(2b3b2dc77789b814810b25cda3f5adcfd7e0e57e) )

	ROM_REGION( 0x8000, "adpcm", 0 )    /* ADPCM samples */
	ROM_LOAD( "mkj-40.14c",   0x00000, 0x8000, CRC(4d8fcc4a) SHA1(24c2b8031367035c89c6649a084bce0714f3e8d4) )

	ROM_REGION( 0x1000, "nvram", 0 )    /* preformatted NVRAM */
	ROM_LOAD( "default.nv",   0x00000, 0x1000, CRC(eccc0263) SHA1(679010f096536e8bb572551e9d0776cad72145e2) )
ROM_END


GAME( 1986, mjkjidai, 0, mjkjidai, mjkjidai, mjkjidai_state, empty_init, ROT0, "Sanritsu",  "Mahjong Kyou Jidai (Japan)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_SUPPORTS_SAVE )