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

Fast Lane(GX752) (c) 1987 Konami

Driver by Manuel Abadia <manu@teleline.es>

TODO:
- is the game playable? How do you end a level?
- colors don't seem 100% accurate.
- verify that sound is correct (volume and bank switching)

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

#include "driver.h"
#include "cpu/hd6309/hd6309.h"
#include "vidhrdw/generic.h"
#include "vidhrdw/konamiic.h"

/* from vidhrdw/fastlane.c */
extern unsigned char *fastlane_k007121_regs,*fastlane_videoram1,*fastlane_videoram2;
WRITE_HANDLER( fastlane_vram1_w );
WRITE_HANDLER( fastlane_vram2_w );
PALETTE_INIT( fastlane );
VIDEO_START( fastlane );
VIDEO_UPDATE( fastlane );

static INTERRUPT_GEN( fastlane_interrupt )
{
	if (cpu_getiloops() == 0)
	{
		if (K007121_ctrlram[0][0x07] & 0x02)
			cpu_set_irq_line(0, HD6309_IRQ_LINE, HOLD_LINE);
	}
	else if (cpu_getiloops() % 2)
	{
		if (K007121_ctrlram[0][0x07] & 0x01)
			cpu_set_irq_line(0, IRQ_LINE_NMI, PULSE_LINE);
	}
}

WRITE_HANDLER( k007121_registers_w )
{
	if (offset < 8)
		K007121_ctrl_0_w(offset,data);
	else	/* scroll registers */
		fastlane_k007121_regs[offset] = data;
}

static WRITE_HANDLER( fastlane_bankswitch_w )
{
	int bankaddress;
	unsigned char *RAM = memory_region(REGION_CPU1);

	/* bits 0 & 1 coin counters */
	coin_counter_w(0,data & 0x01);
	coin_counter_w(1,data & 0x02);

	/* bits 2 & 3 = bank number */
	bankaddress = 0x10000 + ((data & 0x0c) >> 2) * 0x4000;
	cpu_setbank(1,&RAM[bankaddress]);

	/* bit 4: bank # for the 007232 (chip 2) */
	RAM = memory_region(REGION_SOUND2);
	K007232_bankswitch(1,RAM + 0x40000*((data & 0x10) >> 4),RAM + 0x40000*((data & 0x10) >> 4));

	/* other bits seems to be unused */
}

/* Read and write handlers for one K007232 chip:
   even and odd register are mapped swapped */

static READ_HANDLER( fastlane_K007232_read_port_0_r )
{
	return K007232_read_port_0_r(offset ^ 1);
}
static WRITE_HANDLER( fastlane_K007232_write_port_0_w )
{
	K007232_write_port_0_w(offset ^ 1, data);
}
static READ_HANDLER( fastlane_K007232_read_port_1_r )
{
	return K007232_read_port_1_r(offset ^ 1);
}
static WRITE_HANDLER( fastlane_K007232_write_port_1_w )
{
	K007232_write_port_1_w(offset ^ 1, data);
}



static MEMORY_READ_START( fastlane_readmem )
	{ 0x0000, 0x005f, MRA_RAM },
	{ 0x0800, 0x0800, input_port_2_r }, 	/* DIPSW #3 */
	{ 0x0801, 0x0801, input_port_5_r }, 	/* 2P inputs */
	{ 0x0802, 0x0802, input_port_4_r }, 	/* 1P inputs */
	{ 0x0803, 0x0803, input_port_3_r }, 	/* COINSW */
	{ 0x0900, 0x0900, input_port_0_r }, 	/* DIPSW #1 */
	{ 0x0901, 0x0901, input_port_1_r }, 	/* DISPW #2 */
	{ 0x0d00, 0x0d0d, fastlane_K007232_read_port_0_r },/* 007232 registers (chip 1) */
	{ 0x0e00, 0x0e0d, fastlane_K007232_read_port_1_r },/* 007232 registers (chip 2) */
	{ 0x0f00, 0x0f1f, K051733_r },			/* 051733 (protection) */
	{ 0x1000, 0x1fff, MRA_RAM },			/* Palette RAM/Work RAM */
	{ 0x2000, 0x3fff, MRA_RAM },			/* Video RAM + Sprite RAM */
	{ 0x4000, 0x7fff, MRA_BANK1 },			/* banked ROM */
	{ 0x8000, 0xffff, MRA_ROM },			/* ROM */
MEMORY_END

static MEMORY_WRITE_START( fastlane_writemem )
	{ 0x0000, 0x005f, k007121_registers_w, &fastlane_k007121_regs },/* 007121 registers */
	{ 0x0b00, 0x0b00, watchdog_reset_w },		/* watchdog reset */
	{ 0x0c00, 0x0c00, fastlane_bankswitch_w },	/* bankswitch control */
	{ 0x0d00, 0x0d0d, fastlane_K007232_write_port_0_w },	/* 007232 registers (chip 1) */
	{ 0x0e00, 0x0e0d, fastlane_K007232_write_port_1_w },	/* 007232 registers (chip 2) */
	{ 0x0f00, 0x0f1f, K051733_w },				/* 051733 (protection) */
	{ 0x1000, 0x17ff, paletteram_xBBBBBGGGGGRRRRR_swap_w, &paletteram },/* palette RAM */
	{ 0x1800, 0x1fff, MWA_RAM },				/* Work RAM */
	{ 0x2000, 0x27ff, fastlane_vram1_w, &fastlane_videoram1 },
	{ 0x2800, 0x2fff, fastlane_vram2_w, &fastlane_videoram2 },
	{ 0x3000, 0x3fff, MWA_RAM, &spriteram },	/* Sprite RAM */
	{ 0x4000, 0xffff, MWA_ROM },				/* ROM/banked ROM */
MEMORY_END

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

	Input Ports

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

INPUT_PORTS_START( fastlane )
	PORT_START	/* DSW #1 */
	PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(	0x02, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(	0x05, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(	0x08, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(	0x04, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(	0x01, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(	0x0f, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(	0x03, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(	0x07, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(	0x0e, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(	0x06, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(	0x0d, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(	0x0c, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(	0x0b, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(	0x0a, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(	0x09, DEF_STR( 1C_7C ) )
	PORT_DIPSETTING(	0x00, DEF_STR( Free_Play ) )
	PORT_DIPNAME( 0xf0, 0xf0, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(	0x20, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(	0x50, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(	0x80, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(	0x40, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(	0x10, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(	0xf0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(	0x30, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(	0x70, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(	0xe0, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(	0x60, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(	0xd0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(	0xc0, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(	0xb0, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(	0xa0, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(	0x90, DEF_STR( 1C_7C ) )
//	PORT_DIPSETTING(	0x00, "Invalid" )

	PORT_START	/* DSW #2 */
	PORT_DIPNAME( 0x03, 0x02, DEF_STR( Lives ) )
	PORT_DIPSETTING(	0x03, "2" )
	PORT_DIPSETTING(	0x02, "3" )
	PORT_DIPSETTING(	0x01, "4" )
	PORT_DIPSETTING(	0x00, "7" )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
	PORT_DIPSETTING(	0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	/* The bonus life affects the starting high score too, 20000 or 30000 */
	PORT_DIPNAME( 0x18, 0x18, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(	0x18, "20000 100000" )
	PORT_DIPSETTING(	0x10, "30000 150000" )
	PORT_DIPSETTING(	0x08, "20000" )
	PORT_DIPSETTING(	0x00, "30000" )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
	PORT_DIPSETTING(	0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
	PORT_DIPSETTING(	0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )

	PORT_START	/* DSW #3 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(	0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
	PORT_DIPSETTING(	0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_SERVICE( 0x04, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
	PORT_DIPSETTING(	0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* COINSW */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )	/* service */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* PLAYER 1 INPUTS */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT  | IPF_8WAY | IPF_PLAYER1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP	  | IPF_8WAY | IPF_PLAYER1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN  | IPF_8WAY | IPF_PLAYER1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER1 )
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* PLAYER 2 INPUTS */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT  | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_UP	  | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN  | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

INPUT_PORTS_END

static struct GfxLayout gfxlayout =
{
	8,8,
	0x80000/32,
	4,
	{ 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
};

static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ REGION_GFX1, 0, &gfxlayout, 0, 64*16 },
	{ -1 } /* end of array */
};

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

	Machine Driver

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

static void volume_callback0(int v)
{
	K007232_set_volume(0,0,(v >> 4) * 0x11,0);
	K007232_set_volume(0,1,0,(v & 0x0f) * 0x11);
}

static void volume_callback1(int v)
{
	K007232_set_volume(1,0,(v >> 4) * 0x11,0);
	K007232_set_volume(1,1,0,(v & 0x0f) * 0x11);
}

static struct K007232_interface k007232_interface =
{
	2,			/* number of chips */
	{ REGION_SOUND1, REGION_SOUND2 },	/* memory regions */
	{ K007232_VOL(50,MIXER_PAN_CENTER,50,MIXER_PAN_CENTER),
			K007232_VOL(50,MIXER_PAN_LEFT,50,MIXER_PAN_RIGHT) },	/* volume */
	{ volume_callback0,  volume_callback1 } /* external port callback */
};

static MACHINE_DRIVER_START( fastlane )

	/* basic machine hardware */
	MDRV_CPU_ADD(HD6309, 3000000)		/* 24MHz/8? */
	MDRV_CPU_MEMORY(fastlane_readmem,fastlane_writemem)
	MDRV_CPU_VBLANK_INT(fastlane_interrupt,16)	/* 1 IRQ + ??? NMI (generated by the 007121) */

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_60HZ_VBLANK_DURATION)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(37*8, 32*8)
	MDRV_VISIBLE_AREA(0*8, 35*8-1, 2*8, 30*8-1)
	MDRV_GFXDECODE(gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(1024)
	MDRV_COLORTABLE_LENGTH(1024*16)

	MDRV_PALETTE_INIT(fastlane)
	MDRV_VIDEO_START(fastlane)
	MDRV_VIDEO_UPDATE(fastlane)

	/* sound hardware */
	MDRV_SOUND_ADD(K007232, k007232_interface)
MACHINE_DRIVER_END


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

  Game ROMs

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

ROM_START( fastlane )
	ROM_REGION( 0x21000, REGION_CPU1, 0 ) /* code + banked roms */
	ROM_LOAD( "752_m02.9h",  0x08000, 0x08000, 0xe1004489 )  /* fixed ROM */
	ROM_LOAD( "752_e01.10h", 0x10000, 0x10000, 0xff4d6029 )  /* banked ROM */

	ROM_REGION( 0x80000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "752e04.2i",   0x00000, 0x80000, 0xa126e82d )  /* tiles + sprites */

	ROM_REGION( 0x0100, REGION_PROMS, 0 )
	ROM_LOAD( "752e03.6h",   0x0000, 0x0100, 0x44300aeb )

	ROM_REGION( 0x20000, REGION_SOUND1, 0 )	/* 007232 data */
	ROM_LOAD( "752e06.4c",   0x00000, 0x20000, 0x85d691ed ) /* chip 1 */

	ROM_REGION( 0x80000, REGION_SOUND2, 0 )	/* 007232 data */
	ROM_LOAD( "752e05.12b",  0x00000, 0x80000, 0x119e9cbf ) /* chip 2 */
ROM_END



GAMEX( 1987, fastlane, 0, fastlane, fastlane, 0, ROT90, "Konami", "Fast Lane", GAME_IMPERFECT_COLORS )
