// license:BSD-3-Clause
// copyright-holders:David Haywood
/*
Panic Road
----------

TODO:
 - are collisions 100%, need to find reference videos of game being played properly to check things look ok (I think they are..)
 - are priorities with sprites 100%, sprite-sprite priorities are ugly in many places, maybe the SEI0010BU are 3 sprite chips?

--

Panic Road (JPN Ver.)
(c)1986 Taito / Seibu
SEI-8611M (M6100219A)

OSC  : 14.31818MHz,12.0000MHz,16.0000MHz
CPU  : V20 (Sony CXQ70116D-8) @ 8.000MHz [16/2]
       Toshiba T5182 @ 3.579545 (14.31818/4]
Sound: YM2151 @ 3.579545 [14.31818/4]
    VSync 60Hz
    HSync 15.32kHz
Other:
    SEI0010BU(TC17G005AN-0025) x3
    SEI0021BU(TC17G008AN-0022)
    Toshiba(TC17G008AN-0024)
    SEI0030BU(TC17G005AN-0026)
    SEI0050BU(MA640 00)
    SEI0040BU(TC15G008AN-0048) @ 6.00MHz [12/2]


13F.BIN      [4e6b3c04]
15F.BIN      [d735b572]

22D.BIN      [eb1a46e1]

5D.BIN       [f3466906]
7D.BIN       [8032c1e9]

2A.BIN       [3ac0e5b4]
2B.BIN       [567d327b]
2C.BIN       [cd77ec79]
2D.BIN       [218d2c3e]

2J.BIN       [80f05923]
2K.BIN       [35f07bca]

1.19N        [674131b9]
2.19M        [3d48b0b5]

A.15C        [c75772bc] 82s129
B.14C        [145d1e0d]  |
C.13C        [11c11bbd]  |
D.9B         [f99cac4b] /

8A.BPR       [908684a6] 63s281
10J.BPR      [1dd80ee1]  |
10L.BPR      [f3f29695]  |
12D.BPR      [0df8aa3c] /

*/

#include "emu.h"
#include "cpu/z80/z80.h"
#include "cpu/nec/nec.h"
#include "audio/t5182.h"


class panicr_state : public driver_device
{
public:
	panicr_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_t5182(*this, "t5182"),
		m_gfxdecode(*this, "gfxdecode"),
		m_screen(*this, "screen"),
		m_palette(*this, "palette"),
		m_mainram(*this, "mainram"),
		m_spriteram(*this, "spriteram"),
		m_textram(*this, "textram"),
		m_spritebank(*this, "spritebank") { }

	required_device<cpu_device> m_maincpu;
	required_device<t5182_device> m_t5182;
	required_device<gfxdecode_device> m_gfxdecode;
	required_device<screen_device> m_screen;
	required_device<palette_device> m_palette;

	required_shared_ptr<UINT8> m_mainram;
	required_shared_ptr<UINT8> m_spriteram;
	required_shared_ptr<UINT8> m_textram;
	required_shared_ptr<UINT8> m_spritebank;

	tilemap_t *m_bgtilemap;
	tilemap_t *m_infotilemap_2;
	tilemap_t *m_txttilemap;

	int m_scrollx;
	std::unique_ptr<bitmap_ind16> m_temprender;
	std::unique_ptr<bitmap_ind16> m_tempbitmap_1;
	rectangle m_tempbitmap_clip;

	DECLARE_READ8_MEMBER(collision_r);
	DECLARE_WRITE8_MEMBER(scrollx_lo_w);
	DECLARE_WRITE8_MEMBER(scrollx_hi_w);
	DECLARE_WRITE8_MEMBER(output_w);
	DECLARE_READ8_MEMBER(t5182shared_r);
	DECLARE_WRITE8_MEMBER(t5182shared_w);

	TILE_GET_INFO_MEMBER(get_bgtile_info);
	TILE_GET_INFO_MEMBER(get_infotile_info_2);
	TILE_GET_INFO_MEMBER(get_txttile_info);

	DECLARE_DRIVER_INIT(panicr);
	virtual void video_start() override;
	DECLARE_PALETTE_INIT(panicr);

	UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
	void draw_sprites(bitmap_ind16 &bitmap,const rectangle &cliprect );

	TIMER_DEVICE_CALLBACK_MEMBER(scanline);
};


#define MASTER_CLOCK    XTAL_16MHz
#define SOUND_CLOCK     XTAL_14_31818MHz
#define TC15_CLOCK      XTAL_12MHz


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

  Video

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

PALETTE_INIT_MEMBER(panicr_state, panicr)
{
	const UINT8 *color_prom = memregion("proms")->base();
	int i;

	/* create a lookup table for the palette */
	for (i = 0; i < 0x100; i++)
	{
		int r = pal4bit(color_prom[i + 0x000]);
		int g = pal4bit(color_prom[i + 0x100]);
		int b = pal4bit(color_prom[i + 0x200]);

		palette.set_indirect_color(i, rgb_t(r, g, b));
	}

	/* color_prom now points to the beginning of the lookup table */
	color_prom += 0x300;

	// txt lookup table
	for (i = 0; i < 0x100; i++)
	{
		UINT8 ctabentry;

		if (color_prom[i] & 0x40)
			ctabentry = 0;
		else
			ctabentry = (color_prom[i] & 0x3f) | 0x80;

		palette.set_pen_indirect(i, ctabentry);
	}

	// tile lookup table
	for (i = 0x000; i < 0x100; i++)
	{
		UINT8 ctabentry = (color_prom[i+0x100] & 0x3f) | 0x00;

		palette.set_pen_indirect(((i&0x0f) + ((i&0xf0)<<1))  +0x200, ctabentry);
		palette.set_pen_indirect(((i&0x0f) + ((i&0xf0)<<1))  +0x210, ctabentry);
	}

	// sprite lookup table
	for (i = 0x000; i < 0x100; i++)
	{
		UINT8 ctabentry;

		if (color_prom[i+0x200] & 0x40)
			ctabentry = 0;
		else
			ctabentry = (color_prom[i+0x200] & 0x3f) | 0x40;

		palette.set_pen_indirect(i+0x100, ctabentry);
	}
}


TILE_GET_INFO_MEMBER(panicr_state::get_bgtile_info)
{
	int code,attr;

	code=memregion("user1")->base()[tile_index];
	attr=memregion("user2")->base()[tile_index];
	code+=((attr&7)<<8);
	SET_TILE_INFO_MEMBER(1,
		code,
		(attr & 0xf0) >> 4,
		0);
}



TILE_GET_INFO_MEMBER(panicr_state::get_infotile_info_2)
{
	int code,attr;

	code=memregion("user1")->base()[tile_index];
	attr=memregion("user2")->base()[tile_index];
	code+=((attr&7)<<8);
	SET_TILE_INFO_MEMBER(3,
		code,
		0,
		0);
}




TILE_GET_INFO_MEMBER(panicr_state::get_txttile_info)
{
	int code=m_textram[tile_index*4];
	int attr=m_textram[tile_index*4+2];
	int color = attr & 0x07;

	tileinfo.group = color;

	SET_TILE_INFO_MEMBER(0,
		code + ((attr & 8) << 5),
		color,
		0);
}


void panicr_state::video_start()
{
	m_bgtilemap = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(panicr_state::get_bgtile_info),this),TILEMAP_SCAN_ROWS,16,16,1024,16 );
	m_infotilemap_2 = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(panicr_state::get_infotile_info_2),this),TILEMAP_SCAN_ROWS,16,16,1024,16 );

	m_txttilemap = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(panicr_state::get_txttile_info),this),TILEMAP_SCAN_ROWS,8,8,32,32 );
	m_txttilemap->configure_groups(*m_gfxdecode->gfx(0), 0);

	save_item(NAME(m_scrollx));
}

void panicr_state::draw_sprites(bitmap_ind16 &bitmap,const rectangle &cliprect )
{
	int offs,flipx,flipy,x,y,color,sprite;


	// ssss ssss | Fx-- cccc | yyyy yyyy | xxxx xxxx

	for (offs = m_spriteram.bytes() - 16; offs>=0; offs-=16)
	{
		flipx = 0;
		flipy = m_spriteram[offs+1] & 0x80;
		y = m_spriteram[offs+2];
		x = m_spriteram[offs+3];
		if (m_spriteram[offs+1] & 0x40) x -= 0x100;

		if (m_spriteram[offs+1] & 0x20)
		{
			// often set
		}

		if (m_spriteram[offs+1] & 0x10)
		{
			popmessage("(spriteram[offs+1] & 0x10) %02x\n", (m_spriteram[offs+1] & 0x10));
		}


		color = m_spriteram[offs+1] & 0x0f;
		sprite = m_spriteram[offs+0] | (*m_spritebank << 8);

		m_gfxdecode->gfx(2)->transmask(bitmap,cliprect,
				sprite,
				color,flipx,flipy,x,y,
				m_palette->transpen_mask(*m_gfxdecode->gfx(2), color, 0));
	}
}

UINT32 panicr_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
	m_bgtilemap->set_scrollx(0, m_scrollx);
	m_bgtilemap->draw(screen, *m_temprender, m_tempbitmap_clip, 0,0);

//  m_infotilemap_2->set_scrollx(0, m_scrollx);
//  m_infotilemap_2->draw(screen, *m_temprender, m_tempbitmap_clip, 0,0);


	bitmap.fill(m_palette->black_pen(), cliprect);
	m_txttilemap->mark_all_dirty();



	for (int y=0;y<256;y++)
	{
		UINT16* srcline = &m_temprender->pix16(y);
		UINT16* dstline = &bitmap.pix16(y);

		for (int x=0;x<256;x++)
		{
			UINT16 dat = srcline[x];

			dstline[x] = ((dat & 0x00f) | ((dat & 0x1e0)>>0)) + 0x200;

		}

	}

	draw_sprites(bitmap,cliprect);

	for (int y=0;y<256;y++)
	{
		UINT16* srcline = &m_temprender->pix16(y);
		UINT16* dstline = &bitmap.pix16(y);

		for (int x=0;x<256;x++)
		{
			UINT16 dat = srcline[x];
			if (dat & 0x10)
				dstline[x] = ((dat & 0x00f) | ((dat & 0x1e0)>>0)) + 0x200;

		}

	}


	m_txttilemap->draw(screen, bitmap, cliprect, 0,0);

	return 0;
}


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

  I/O / Memory

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

READ8_MEMBER(panicr_state::collision_r)
{
	// re-render the collision data here
	// collisions are based on 2 bits from the tile data, relative to a page of tiles
	//
	// the 2 collision bits represent
	// solid areas of the playfield
	// areas where flippers affect the ball
	//
	// there is a 3rd additional bit that is used as priority, we're not concerned about that here

	m_infotilemap_2->set_scrollx(0, m_scrollx & 0xffff);
	m_infotilemap_2->draw(m_screen, *m_tempbitmap_1, m_tempbitmap_clip, 0,0);


	int actual_column = offset&0x3f;
	int actual_line = offset >> 6;


	actual_column = actual_column * 4;

	actual_column -= m_scrollx;
	actual_column &= 0xff;


	UINT8 ret = 0;
	UINT16* srcline = &m_tempbitmap_1->pix16(actual_line);


	ret |= (srcline[(actual_column+0)&0xff]&3) << 6;
	ret |= (srcline[(actual_column+1)&0xff]&3) << 4;
	ret |= (srcline[(actual_column+2)&0xff]&3) << 2;
	ret |= (srcline[(actual_column+3)&0xff]&3) << 0;

	logerror("%06x: (scroll x upper bits is %04x (full %04x)) read %d %d\n", space.device().safe_pc(), (m_scrollx&0xff00)>>8, m_scrollx,  actual_line, actual_column);


	return ret;


}


WRITE8_MEMBER(panicr_state::scrollx_lo_w)
{
	logerror("scrollx_lo_w %02x\n", data);
	m_scrollx = (m_scrollx & 0xff00) | (data << 1 & 0xfe) | (data >> 7 & 0x01);
}

WRITE8_MEMBER(panicr_state::scrollx_hi_w)
{
	logerror("scrollx_hi_w %02x\n", data);
	m_scrollx = (m_scrollx & 0xff) | ((data &0xf0) << 4) | ((data & 0x0f) << 12);
}

WRITE8_MEMBER(panicr_state::output_w)
{
	// d6, d7: play counter? (it only triggers on 1st coin)
	machine().bookkeeping().coin_counter_w(0, (data & 0x40) ? 1 : 0);
	machine().bookkeeping().coin_counter_w(1, (data & 0x80) ? 1 : 0);

	logerror("output_w %02x\n", data);

	// other bits: ?
}

READ8_MEMBER(panicr_state::t5182shared_r)
{
	if ((offset & 1) == 0)
		return m_t5182->sharedram_r(space, offset/2);
	else
		return 0;
}

WRITE8_MEMBER(panicr_state::t5182shared_w)
{
	if ((offset & 1) == 0)
		m_t5182->sharedram_w(space, offset/2, data);
}


static ADDRESS_MAP_START( panicr_map, AS_PROGRAM, 8, panicr_state )
	AM_RANGE(0x00000, 0x01fff) AM_RAM AM_SHARE("mainram")
	AM_RANGE(0x02000, 0x03cff) AM_RAM AM_SHARE("spriteram") // how big is sprite ram, some places definitely have sprites at 3000+
	AM_RANGE(0x03d00, 0x03fff) AM_RAM
	AM_RANGE(0x08000, 0x0bfff) AM_READ(collision_r)
	AM_RANGE(0x0c000, 0x0cfff) AM_RAM AM_SHARE("textram")
	AM_RANGE(0x0d000, 0x0d000) AM_DEVWRITE("t5182", t5182_device, sound_irq_w)
	AM_RANGE(0x0d002, 0x0d002) AM_DEVWRITE("t5182", t5182_device, sharedram_semaphore_main_acquire_w)
	AM_RANGE(0x0d004, 0x0d004) AM_DEVREAD("t5182", t5182_device, sharedram_semaphore_snd_r)
	AM_RANGE(0x0d006, 0x0d006) AM_DEVWRITE("t5182", t5182_device, sharedram_semaphore_main_release_w)
	AM_RANGE(0x0d200, 0x0d2ff) AM_READWRITE(t5182shared_r, t5182shared_w)
	AM_RANGE(0x0d400, 0x0d400) AM_READ_PORT("P1")
	AM_RANGE(0x0d402, 0x0d402) AM_READ_PORT("P2")
	AM_RANGE(0x0d404, 0x0d404) AM_READ_PORT("START")
	AM_RANGE(0x0d406, 0x0d406) AM_READ_PORT("DSW1")
	AM_RANGE(0x0d407, 0x0d407) AM_READ_PORT("DSW2")
	AM_RANGE(0x0d802, 0x0d802) AM_WRITE(scrollx_hi_w)
	AM_RANGE(0x0d804, 0x0d804) AM_WRITE(scrollx_lo_w)
	AM_RANGE(0x0d80a, 0x0d80a) AM_WRITE(output_w)
	AM_RANGE(0x0d80c, 0x0d80c) AM_WRITEONLY AM_SHARE("spritebank")
	AM_RANGE(0x0d818, 0x0d818) AM_WRITENOP // watchdog?
	AM_RANGE(0xf0000, 0xfffff) AM_ROM
ADDRESS_MAP_END


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

  Inputs

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

static INPUT_PORTS_START( panicr )
	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_NAME("P1 Left Flipper")
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_NAME("P1 Right Flipper")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1) PORT_NAME("P1 Left Shake")
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_PLAYER(1) PORT_NAME("P1 Right Shake")
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("P2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_NAME("P2 Left Flipper")
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_NAME("P2 Right Flipper")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2) PORT_NAME("P2 Left Shake")
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_PLAYER(2) PORT_NAME("P2 Right Shake")
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("START")
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0xe7, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START("DSW1")
	PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coin_A ) )           PORT_DIPLOCATION("SW1:1,2,3")
	PORT_DIPSETTING(    0x00, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x05, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_5C ) )
	PORT_DIPNAME( 0x18, 0x18, DEF_STR( Coin_B ) )           PORT_DIPLOCATION("SW1:4,5")
	PORT_DIPSETTING(    0x10, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x18, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_SERVICE_DIPLOC( 0x20, IP_ACTIVE_LOW, "SW1:6" )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Allow_Continue ) )   PORT_DIPLOCATION("SW1:7")
	PORT_DIPSETTING(    0x40, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )          PORT_DIPLOCATION("SW1:8")
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	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, 0x06, DEF_STR( Difficulty ) )       PORT_DIPLOCATION("SW2:2,3")
	PORT_DIPSETTING(    0x06, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Medium ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x18, 0x18, "Bonus Points" )              PORT_DIPLOCATION("SW2:4,5")
	PORT_DIPSETTING(    0x18, "5k 10k" )
	PORT_DIPSETTING(    0x10, "10k 20k" )
	PORT_DIPSETTING(    0x08, "20k 40k" )
	PORT_DIPSETTING(    0x00, "50k 100k" )
	PORT_DIPNAME( 0x60, 0x20, DEF_STR( Lives ) )            PORT_DIPLOCATION("SW2:6,7")
	PORT_DIPSETTING(    0x00, "4" )
	PORT_DIPSETTING(    0x20, "3" )
	PORT_DIPSETTING(    0x40, "2" )
	PORT_DIPSETTING(    0x60, "1" )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Cabinet ) )          PORT_DIPLOCATION("SW2:8")
	PORT_DIPSETTING(    0x80, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )

INPUT_PORTS_END


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

  Machine Config

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

static const gfx_layout charlayout =
{
	8,8,
	RGN_FRAC(1,2),
	4,
	{ 0, 4, RGN_FRAC(1,2)+0, RGN_FRAC(1,2)+4 },
	{ 0, 1, 2, 3, 8+0, 8+1, 8+2, 8+3 },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
	16*8
};

static const gfx_layout bgtilelayout =
{
	16,16,
	RGN_FRAC(1,4),
	5,
	{  /* priority bit -> */ RGN_FRAC(1,4)+0 , /* colour bits -> */ RGN_FRAC(2,4)+0, RGN_FRAC(2,4)+4, RGN_FRAC(3,4)+0, RGN_FRAC(3,4)+4},
	{ 0, 1, 2, 3, 8+0, 8+1, 8+2, 8+3,
			16+0, 16+1, 16+2, 16+3, 24+0, 24+1, 24+2, 24+3 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32,
			8*32, 9*32, 10*32, 11*32, 12*32, 13*32, 14*32, 15*32 },
	32*16
};


static const gfx_layout infotilelayout_2 =
{
	16,16,
	RGN_FRAC(1,4),
	2,
	{ /* collision bits -> */ RGN_FRAC(1,4)+4, 4  },
	{ 0, 1, 2, 3, 8+0, 8+1, 8+2, 8+3,
			16+0, 16+1, 16+2, 16+3, 24+0, 24+1, 24+2, 24+3 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32,
			8*32, 9*32, 10*32, 11*32, 12*32, 13*32, 14*32, 15*32 },
	32*16
};




static const gfx_layout spritelayout =
{
	16,16,
	RGN_FRAC(1,2),
	4,
	{ 0, 4, RGN_FRAC(1,2)+0, RGN_FRAC(1,2)+4 },
	{ 0, 1, 2, 3, 4*8+0, 4*8+1, 4*8+2,  4*8+3,
		8*8+0, 8*8+1, 8*8+2, 8*8+3, 12*8+0, 12*8+1, 12*8+2, 12*8+3 },
	{ 0*8, 1*8, 2*8, 3*8, 16*8, 17*8, 18*8, 19*8,
		32*8, 33*8, 34*8, 35*8, 48*8, 49*8, 50*8, 51*8 },
	32*16
};

static GFXDECODE_START( panicr )
	GFXDECODE_ENTRY( "gfx1", 0, charlayout,     0x000,  8 )
	GFXDECODE_ENTRY( "gfx2", 0, bgtilelayout,   0x200, 32 )
	GFXDECODE_ENTRY( "gfx3", 0, spritelayout,   0x100, 16 )
	GFXDECODE_ENTRY( "gfx2", 0, infotilelayout_2, 0x100, 16 ) // palette is just to make it viewable with F4

GFXDECODE_END


TIMER_DEVICE_CALLBACK_MEMBER(panicr_state::scanline)
{
	int scanline = param;

	if(scanline == 240) // vblank-out irq
		m_maincpu->set_input_line_and_vector(0, HOLD_LINE, 0xc4/4);

	if(scanline == 0) // <unknown>
		m_maincpu->set_input_line_and_vector(0, HOLD_LINE, 0xc8/4);
}

static MACHINE_CONFIG_START( panicr, panicr_state )
	MCFG_CPU_ADD("maincpu", V20,MASTER_CLOCK/2) /* Sony 8623h9 CXQ70116D-8 (V20 compatible) */
	MCFG_CPU_PROGRAM_MAP(panicr_map)
	MCFG_TIMER_DRIVER_ADD_SCANLINE("scantimer", panicr_state, scanline, "screen", 0, 1)

	MCFG_DEVICE_ADD("t5182", T5182, 0)


	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
	MCFG_SCREEN_SIZE(32*8, 32*8)
//  MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 32*8-1)
	MCFG_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)
	MCFG_SCREEN_UPDATE_DRIVER(panicr_state, screen_update)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_GFXDECODE_ADD("gfxdecode", "palette", panicr)
	MCFG_PALETTE_ADD("palette", 256*4)
	MCFG_PALETTE_INDIRECT_ENTRIES(256)
	MCFG_PALETTE_INIT_OWNER(panicr_state, panicr)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_YM2151_ADD("ymsnd", SOUND_CLOCK/4) /* 3.579545 MHz */
	MCFG_YM2151_IRQ_HANDLER(DEVWRITELINE("t5182", t5182_device, ym2151_irq_handler))
	MCFG_SOUND_ROUTE(0, "mono", 1.0)
	MCFG_SOUND_ROUTE(1, "mono", 1.0)

MACHINE_CONFIG_END


ROM_START( panicr )
	ROM_REGION( 0x200000, "maincpu", 0 ) /* v20 main cpu */
	ROM_LOAD16_BYTE("2.19m",   0x0f0000, 0x08000, CRC(3d48b0b5) SHA1(a6e8b38971a8964af463c16f32bb7dbd301dd314) )
	ROM_LOAD16_BYTE("1.19n",   0x0f0001, 0x08000, CRC(674131b9) SHA1(63499cd5ad39e79e70f3ba7060680f0aa133f095) )

	ROM_REGION( 0x8000, "t5182_z80", 0 ) /* Toshiba T5182 external ROM */
	ROM_LOAD( "22d.bin",   0x0000, 0x8000, CRC(eb1a46e1) SHA1(278859ae4bca9f421247e646d789fa1206dcd8fc) )

	ROM_REGION( 0x04000, "gfx1", 0 )
	ROM_LOAD( "13f.bin", 0x000000, 0x2000, CRC(4e6b3c04) SHA1(f388969d5d822df0eaa4d8300cbf9cee47468360) )
	ROM_LOAD( "15f.bin", 0x002000, 0x2000, CRC(d735b572) SHA1(edcdb6daec97ac01a73c5010727b1694f512be71) )

	ROM_REGION( 0x80000, "gfx2", 0 )
	ROM_LOAD( "2a.bin", 0x000000, 0x20000, CRC(3ac0e5b4) SHA1(96b8bdf02002ec8ce87fd47fd21f7797a79d79c9) )
	ROM_LOAD( "2b.bin", 0x020000, 0x20000, CRC(567d327b) SHA1(762b18ef1627d71074ba02b0eb270bd9a01ac0d8) )
	ROM_LOAD( "2c.bin", 0x040000, 0x20000, CRC(cd77ec79) SHA1(94b61b7d77c016ae274eddbb1e66e755f312e11d) )
	ROM_LOAD( "2d.bin", 0x060000, 0x20000, CRC(218d2c3e) SHA1(9503b3b67e71dc63448aed7815845b844e240afe) )

	ROM_REGION( 0x40000, "gfx3", 0 )
	ROM_LOAD( "2j.bin", 0x000000, 0x20000, CRC(80f05923) SHA1(5c886446fd77d3c39cb4fa43ea4beb8c89d20636) )
	ROM_LOAD( "2k.bin", 0x020000, 0x20000, CRC(35f07bca) SHA1(54e6f82c2e6e1373c3ac1c6138ef738e5a0be6d0) )

	ROM_REGION( 0x04000, "user1", 0 )
	ROM_LOAD( "5d.bin", 0x00000, 0x4000, CRC(f3466906) SHA1(42b512ba93ba7ac958402d1871c5ae015def3501) ) //tilemaps
	ROM_REGION( 0x04000, "user2", 0 )
	ROM_LOAD( "7d.bin", 0x00000, 0x4000, CRC(8032c1e9) SHA1(fcc8579c0117ebe9271cff31e14a30f61a9cf031) ) //attribute maps

	ROM_REGION( 0x0800,  "proms", 0 )
	ROM_LOAD( "b.14c",   0x00000, 0x100, CRC(145d1e0d) SHA1(8073fd176a1805552a5ac00ca0d9189e6e8936b1) ) // red
	ROM_LOAD( "a.15c",   0x00100, 0x100, CRC(c75772bc) SHA1(ec84052aedc1d53f9caba3232ffff17de69561b2) ) // green
	ROM_LOAD( "c.13c",   0x00200, 0x100, CRC(11c11bbd) SHA1(73663b2cf7269a62011ee067a026269ce0c15a7c) ) // blue
	ROM_LOAD( "12d.bpr", 0x00300, 0x100, CRC(0df8aa3c) SHA1(5149265d788ea4885793b0786f765524b4745f04) ) // txt lookup table
	ROM_LOAD( "8a.bpr",  0x00400, 0x100, CRC(908684a6) SHA1(82d9cb8aed576d1132615b5341c36ef51856b3a6) ) // tile lookup table
	ROM_LOAD( "10j.bpr", 0x00500, 0x100, CRC(1dd80ee1) SHA1(2d634e75666b919446e76fd35a06af27a1a89707) ) // sprite lookup table
	ROM_LOAD( "d.9b",    0x00600, 0x100, CRC(f99cac4b) SHA1(b4e6d0e0186fe186e747a9f6857b97591948c682) ) // unknown
	ROM_LOAD( "10l.bpr", 0x00700, 0x100, CRC(f3f29695) SHA1(2607e96564a5e6e9a542377a01f399ea86a36c48) ) // unknown
ROM_END

ROM_START( panicrg ) /* Distributed by TV-Tuning Videospiele GMBH */
	ROM_REGION( 0x200000, "maincpu", 0 ) /* v20 main cpu */
	ROM_LOAD16_BYTE("2g.19m",   0x0f0000, 0x08000, CRC(cf759403) SHA1(1a0911c943ecc752e46873c9a5da981745f7562d) )
	ROM_LOAD16_BYTE("1g.19n",   0x0f0001, 0x08000, CRC(06877f9b) SHA1(8b92209d6422ff2b1f3cb66bd39a3ff84e399eec) )

	ROM_REGION( 0x10000, "t5182_z80", 0 ) /* Toshiba T5182 external ROM */
	ROM_LOAD( "22d.bin",   0x0000, 0x8000, CRC(eb1a46e1) SHA1(278859ae4bca9f421247e646d789fa1206dcd8fc) )

	ROM_REGION( 0x04000, "gfx1", 0 )
	ROM_LOAD( "13f.bin", 0x000000, 0x2000, CRC(4e6b3c04) SHA1(f388969d5d822df0eaa4d8300cbf9cee47468360) )
	ROM_LOAD( "15f.bin", 0x002000, 0x2000, CRC(d735b572) SHA1(edcdb6daec97ac01a73c5010727b1694f512be71) )

	ROM_REGION( 0x80000, "gfx2", 0 )
	ROM_LOAD( "2a.bin", 0x000000, 0x20000, CRC(3ac0e5b4) SHA1(96b8bdf02002ec8ce87fd47fd21f7797a79d79c9) )
	ROM_LOAD( "2b.bin", 0x020000, 0x20000, CRC(567d327b) SHA1(762b18ef1627d71074ba02b0eb270bd9a01ac0d8) )
	ROM_LOAD( "2c.bin", 0x040000, 0x20000, CRC(cd77ec79) SHA1(94b61b7d77c016ae274eddbb1e66e755f312e11d) )
	ROM_LOAD( "2d.bin", 0x060000, 0x20000, CRC(218d2c3e) SHA1(9503b3b67e71dc63448aed7815845b844e240afe) )

	ROM_REGION( 0x40000, "gfx3", 0 )
	ROM_LOAD( "2j.bin", 0x000000, 0x20000, CRC(80f05923) SHA1(5c886446fd77d3c39cb4fa43ea4beb8c89d20636) )
	ROM_LOAD( "2k.bin", 0x020000, 0x20000, CRC(35f07bca) SHA1(54e6f82c2e6e1373c3ac1c6138ef738e5a0be6d0) )

	ROM_REGION( 0x04000, "user1", 0 )
	ROM_LOAD( "5d.bin", 0x00000, 0x4000, CRC(f3466906) SHA1(42b512ba93ba7ac958402d1871c5ae015def3501) ) //tilemaps
	ROM_REGION( 0x04000, "user2", 0 )
	ROM_LOAD( "7d.bin", 0x00000, 0x4000, CRC(8032c1e9) SHA1(fcc8579c0117ebe9271cff31e14a30f61a9cf031) ) //attribute maps

	ROM_REGION( 0x0800,  "proms", 0 )
	ROM_LOAD( "b.14c",   0x00000, 0x100, CRC(145d1e0d) SHA1(8073fd176a1805552a5ac00ca0d9189e6e8936b1) ) // red
	ROM_LOAD( "a.15c",   0x00100, 0x100, CRC(c75772bc) SHA1(ec84052aedc1d53f9caba3232ffff17de69561b2) ) // green
	ROM_LOAD( "c.13c",   0x00200, 0x100, CRC(11c11bbd) SHA1(73663b2cf7269a62011ee067a026269ce0c15a7c) ) // blue
	ROM_LOAD( "12d.bpr", 0x00300, 0x100, CRC(0df8aa3c) SHA1(5149265d788ea4885793b0786f765524b4745f04) ) // txt lookup table
	ROM_LOAD( "8a.bpr",  0x00400, 0x100, CRC(908684a6) SHA1(82d9cb8aed576d1132615b5341c36ef51856b3a6) ) // tile lookup table
	ROM_LOAD( "10j.bpr", 0x00500, 0x100, CRC(1dd80ee1) SHA1(2d634e75666b919446e76fd35a06af27a1a89707) ) // sprite lookup table
	ROM_LOAD( "d.9b",    0x00600, 0x100, CRC(f99cac4b) SHA1(b4e6d0e0186fe186e747a9f6857b97591948c682) ) // unknown
	ROM_LOAD( "10l.bpr", 0x00700, 0x100, CRC(f3f29695) SHA1(2607e96564a5e6e9a542377a01f399ea86a36c48) ) // unknown
ROM_END


DRIVER_INIT_MEMBER(panicr_state,panicr)
{
	dynamic_buffer buf(0x80000);
	UINT8 *rom;
	int size;
	int i,j;

	rom = memregion("gfx1")->base();
	size = memregion("gfx1")->bytes();

	// text data lines
	for (i = 0;i < size/2;i++)
	{
		int w1;

		w1 = (rom[i + 0*size/2] << 8) + rom[i + 1*size/2];

		w1 = BITSWAP16(w1,  9,12,7,3,  8,13,6,2, 11,14,1,5, 10,15,4,0);

		buf[i + 0*size/2] = w1 >> 8;
		buf[i + 1*size/2] = w1 & 0xff;
	}

	// text address lines
	for (i = 0;i < size;i++)
	{
		rom[i] = buf[BITSWAP24(i,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6, 2,3,1,0,5,4)];
	}


	rom = memregion("gfx2")->base();
	size = memregion("gfx2")->bytes();

	// tiles data lines
	for (i = 0;i < size/4;i++)
	{
		int w1,w2;

		w1 = (rom[i + 0*size/4] << 8) + rom[i + 3*size/4];
		w2 = (rom[i + 1*size/4] << 8) + rom[i + 2*size/4];

		w1 = BITSWAP16(w1, 14,12,11,9,   3,2,1,0, 10,15,13,8,   7,6,5,4);
		w2 = BITSWAP16(w2,  3,13,15,4, 12,2,5,11, 14,6,1,10,    8,7,9,0);

		buf[i + 0*size/4] = w1 >> 8;
		buf[i + 1*size/4] = w1 & 0xff;
		buf[i + 2*size/4] = w2 >> 8;
		buf[i + 3*size/4] = w2 & 0xff;
	}

	// tiles address lines
	for (i = 0;i < size;i++)
	{
		rom[i] = buf[BITSWAP24(i,23,22,21,20,19,18,17,16,15,14,13,12, 5,4,3,2, 11,10,9,8,7,6, 0,1)];
	}


	rom = memregion("gfx3")->base();
	size = memregion("gfx3")->bytes();

	// sprites data lines
	for (i = 0;i < size/2;i++)
	{
		int w1;

		w1 = (rom[i + 0*size/2] << 8) + rom[i + 1*size/2];


		w1 = BITSWAP16(w1, 11,5,7,12, 4,10,13,3, 6,14,9,2, 0,15,1,8);


		buf[i + 0*size/2] = w1 >> 8;
		buf[i + 1*size/2] = w1 & 0xff;
	}

	// sprites address lines
	for (i = 0;i < size;i++)
	{
		rom[i] = buf[i];
	}

	//rearrange  bg tilemaps a bit....
	rom = memregion("user1")->base();
	size = memregion("user1")->bytes();
	memcpy(&buf[0],rom, size);

	for(j=0;j<16;j++)
	{
		for (i = 0;i < size/16;i+=8)
		{
			memcpy(&rom[i+(size/16)*j],&buf[i*16+8*j],8);
		}
	}

	rom = memregion("user2")->base();
	size = memregion("user2")->bytes();
	memcpy(&buf[0],rom, size);

	for(j=0;j<16;j++)
	{
		for (i = 0;i < size/16;i+=8)
		{
			memcpy(&rom[i+(size/16)*j],&buf[i*16+8*j],8);
		}
	}

	m_tempbitmap_1 = std::make_unique<bitmap_ind16>(256,256);
	m_temprender = std::make_unique<bitmap_ind16>(256,256);
	m_tempbitmap_clip.set(0, 256-1, 0, 256-1);

	m_tempbitmap_1->fill(0, m_tempbitmap_clip);

}


GAME( 1986, panicr,  0,      panicr,  panicr, panicr_state,  panicr, ROT270, "Seibu Kaihatsu (Taito license)", "Panic Road (Japan)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_SUPPORTS_SAVE )
GAME( 1986, panicrg, panicr, panicr,  panicr, panicr_state,  panicr, ROT270, "Seibu Kaihatsu (Tuning license)", "Panic Road (Germany)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_SUPPORTS_SAVE )
