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

    Atari I, Robot hardware

    Games supported:
        * I, Robot

    Known issues:
        * none at this time

****************************************************************************

    I-Robot Memory Map

    0000 - 07FF  R/W    RAM
    0800 - 0FFF  R/W    Banked RAM
    1000 - 1000  INRD1  Bit 7 = Right Coin
                        Bit 6 = Left Coin
                        Bit 5 = Aux Coin
                        Bit 4 = Self Test
                        Bit 3 = ?
                        Bit 2 = ?
                        Bit 1 = ?
                        Bit 0 = ?
    1040 - 1040  INRD2  Bit 7 = Start 1
                        Bit 6 = Start 2
                        Bit 5 = ?
                        Bit 4 = Fire
                        Bit 3 = ?
                        Bit 2 = ?
                        Bit 1 = ?
                        Bit 0 = ?
    1080 - 1080  STATRD Bit 7 = VBLANK
                        Bit 6 = Polygon generator done
                        Bit 5 = Mathbox done
                        Bit 4 = Unused
                        Bit 3 = ?
                        Bit 2 = ?
                        Bit 1 = ?
                        Bit 0 = ?
    10C0 - 10C0  INRD3  Dip switch
    1140 - 1140  STATWR Bit 7 = Select Polygon RAM banks
                        Bit 6 = BFCALL
                        Bit 5 = Cocktail Flip
                        Bit 4 = Start Mathbox
                        Bit 3 = Connect processor bus to mathbox bus
                        Bit 2 = Start polygon generator
                        Bit 1 = Select polygon image RAM bank
                        Bit 0 = Erase polygon image memory
    1180 - 1180  OUT0   Bit 7 = Alpha Map 1
                        Bit 6,5 = RAM bank select
                        Bit 4,3 = Mathbox memory select
                        Bit 2,1 = Mathbox bank select
    11C0 - 11C0  OUT1   Bit 7 = Coin Counter R
                        Bit 6 = Coin Counter L
                        Bit 5 = LED2
                        Bit 4 = LED1
                        Bit 3,2,1 = ROM bank select
    1200 - 12FF  R/W    NVRAM (bits 0..3 only)
    1300 - 13FF  W      Select analog controller
    1300 - 13FF  R      Read analog controller
    1400 - 143F  R/W    Quad Pokey
    1800 - 18FF         Palette RAM
    1900 - 1900  W      Watchdog reset
    1A00 - 1A00  W      FIREQ Enable
    1B00 - 1BFF  W      Start analog controller ADC
    1C00 - 1FFF  R/W    Character RAM
    2000 - 3FFF  R/W    Mathbox/Vector Gen Shared RAM
    4000 - 5FFF  R      Banked ROM
    6000 - FFFF  R      Fixed ROM

    Notes:
    - There is no flip screen nor cocktail mode in the original game

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

#include "driver.h"
#include "cpu/m6809/m6809.h"
#include "sound/pokey.h"
#include "irobot.h"



/*************************************
 *
 *  NVRAM handler
 *
 *************************************/

static WRITE8_HANDLER( irobot_nvram_w )
{
	generic_nvram[offset] = data & 0x0f;
}



/*************************************
 *
 *  IRQ acknowledgement
 *
 *************************************/

static WRITE8_HANDLER( irobot_clearirq_w )
{
    cpu_set_input_line(space->machine->cpu[0], M6809_IRQ_LINE ,CLEAR_LINE);
}


static WRITE8_HANDLER( irobot_clearfirq_w )
{
    cpu_set_input_line(space->machine->cpu[0], M6809_FIRQ_LINE ,CLEAR_LINE);
}



/*************************************
 *
 *  Main CPU memory handlers
 *
 *************************************/

static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
    AM_RANGE(0x0000, 0x07ff) AM_READ(SMH_RAM)
    AM_RANGE(0x0800, 0x0fff) AM_READ(SMH_BANK2)
    AM_RANGE(0x1000, 0x103f) AM_READ_PORT("IN0")
    AM_RANGE(0x1040, 0x1040) AM_READ_PORT("IN1")
    AM_RANGE(0x1080, 0x1080) AM_READ(irobot_status_r)
    AM_RANGE(0x10c0, 0x10c0) AM_READ_PORT("DSW1")
    AM_RANGE(0x1200, 0x12ff) AM_READ(SMH_RAM)
    AM_RANGE(0x1300, 0x13ff) AM_READ(irobot_control_r)
    AM_RANGE(0x1400, 0x143f) AM_READ(quad_pokey_r)
    AM_RANGE(0x1c00, 0x1fff) AM_READ(SMH_RAM)
    AM_RANGE(0x2000, 0x3fff) AM_READ(irobot_sharedmem_r)
    AM_RANGE(0x4000, 0x5fff) AM_READ(SMH_BANK1)
    AM_RANGE(0x6000, 0xffff) AM_READ(SMH_ROM)
ADDRESS_MAP_END


static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 )
    AM_RANGE(0x0000, 0x07ff) AM_WRITE(SMH_RAM)
    AM_RANGE(0x0800, 0x0fff) AM_WRITE(SMH_BANK2)
    AM_RANGE(0x1100, 0x1100) AM_WRITE(irobot_clearirq_w)
    AM_RANGE(0x1140, 0x1140) AM_WRITE(irobot_statwr_w)
    AM_RANGE(0x1180, 0x1180) AM_WRITE(irobot_out0_w)
    AM_RANGE(0x11c0, 0x11c0) AM_WRITE(irobot_rom_banksel_w)
    AM_RANGE(0x1200, 0x12ff) AM_WRITE(irobot_nvram_w) AM_BASE(&generic_nvram) AM_SIZE(&generic_nvram_size)
    AM_RANGE(0x1400, 0x143f) AM_WRITE(quad_pokey_w)
    AM_RANGE(0x1800, 0x18ff) AM_WRITE(irobot_paletteram_w)
    AM_RANGE(0x1900, 0x19ff) AM_WRITE(SMH_RAM)            /* Watchdog reset */
    AM_RANGE(0x1a00, 0x1a00) AM_WRITE(irobot_clearfirq_w)
    AM_RANGE(0x1b00, 0x1bff) AM_WRITE(irobot_control_w)
    AM_RANGE(0x1c00, 0x1fff) AM_WRITE(SMH_RAM) AM_BASE(&videoram) AM_SIZE(&videoram_size)
    AM_RANGE(0x2000, 0x3fff) AM_WRITE(irobot_sharedmem_w)
    AM_RANGE(0x4000, 0xffff) AM_WRITE(SMH_ROM)
ADDRESS_MAP_END



/*************************************
 *
 *  Port definitions
 *
 *************************************/

static INPUT_PORTS_START( irobot )
	PORT_START("IN0")	/* IN0 */
    PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
    PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
    PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
    PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
    PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
    PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN3 )
    PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN1 )
    PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 )

	PORT_START("IN1")	/* IN1 */
    PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
    PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
    PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
    PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
    PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
    PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
    PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
    PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )

	PORT_START("IN2")	/* IN2 */
    PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
    PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
    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_HIGH, IPT_UNKNOWN ) /* MB DONE */
    PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNKNOWN ) /* EXT DONE */
    PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK )

	PORT_START("DSW1") /* DSW1 */
	PORT_DIPNAME(    0x03, 0x00, "Coins Per Credit" )
	PORT_DIPSETTING( 0x00, "1 Coin 1 Credit" )
	PORT_DIPSETTING( 0x01, "2 Coins 1 Credit" )
	PORT_DIPSETTING( 0x02, "3 Coins 1 Credit" )
	PORT_DIPSETTING( 0x03, "4 Coins 1 Credit" )
	PORT_DIPNAME(    0x0c, 0x00, "Right Coin" )
	PORT_DIPSETTING( 0x00, "1 Coin for 1 Coin Unit" )
	PORT_DIPSETTING( 0x04, "1 Coin for 4 Coin Units" )
	PORT_DIPSETTING( 0x08, "1 Coin for 5 Coin Units" )
	PORT_DIPSETTING( 0x0c, "1 Coin for 6 Coin Units" )
	PORT_DIPNAME(    0x10, 0x00, "Left Coin" )
	PORT_DIPSETTING( 0x00, "1 Coin for 1 Coin Unit" )
	PORT_DIPSETTING( 0x10, "1 Coin for 2 Coin Units" )
	PORT_DIPNAME(    0xe0, 0x00, "Bonus Adder" )
	PORT_DIPSETTING( 0x00, DEF_STR( None ) )
	PORT_DIPSETTING( 0x20, "1 Credit for 2 Coin Units" )
	PORT_DIPSETTING( 0xa0, "1 Credit for 3 Coin Units" )
	PORT_DIPSETTING( 0x40, "1 Credit for 4 Coin Units" )
	PORT_DIPSETTING( 0x80, "1 Credit for 5 Coin Units" )
	PORT_DIPSETTING( 0x60, "2 Credits for 4 Coin Units" )
	PORT_DIPSETTING( 0xe0, DEF_STR( Free_Play ) )

	PORT_START("DSW2") /* DSW2 */
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Language ) )
	PORT_DIPSETTING(	0x01, DEF_STR( English ) )
	PORT_DIPSETTING(	0x00, DEF_STR( German ) )
	PORT_DIPNAME( 0x02, 0x02, "Min Game Time" )
	PORT_DIPSETTING(	0x00, "90 Sec" )
	PORT_DIPSETTING(	0x02, "3 Lives" )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(	0x08, DEF_STR( None ) )
	PORT_DIPSETTING(	0x0c, "20000" )
	PORT_DIPSETTING(	0x00, "30000" )
	PORT_DIPSETTING(	0x04, "50000" )
	PORT_DIPNAME( 0x30, 0x30, DEF_STR( Lives ) )
	PORT_DIPSETTING(	0x20, "2" )
	PORT_DIPSETTING(	0x30, "3" )
	PORT_DIPSETTING(	0x00, "4" )
	PORT_DIPSETTING(	0x10, "5" )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(	0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(	0x40, DEF_STR( Medium ) )
	PORT_DIPNAME( 0x80, 0x80, "Demo Mode" )
	PORT_DIPSETTING(	0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )

	PORT_START("AN0")	/* IN4 */
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_Y ) PORT_MINMAX(96,163) PORT_SENSITIVITY(70) PORT_KEYDELTA(50)

	PORT_START("AN1")	/* IN5 */
	PORT_BIT( 0xff, 0x80, IPT_AD_STICK_X ) PORT_MINMAX(96,159) PORT_SENSITIVITY(50) PORT_KEYDELTA(50) PORT_REVERSE
INPUT_PORTS_END



/*************************************
 *
 *  Graphics definitions
 *
 *************************************/

static const gfx_layout charlayout =
{
	8,8,
    64,
    1,
    { 0 },
    { 4, 5, 6, 7, 12, 13, 14, 15},
    { 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16},
    16*8
};


static GFXDECODE_START( irobot )
    GFXDECODE_ENTRY( "gfx1", 0, charlayout, 64, 16 )
GFXDECODE_END



/*************************************
 *
 *  Sound interfaces
 *
 *************************************/

static const pokey_interface pokey_config =
{
	{ DEVCB_NULL },
	DEVCB_INPUT_PORT("DSW2")
};



/*************************************
 *
 *  Machine driver
 *
 *************************************/

static MACHINE_DRIVER_START( irobot )

	/* basic machine hardware */
	MDRV_CPU_ADD("maincpu", M6809,1500000)
	MDRV_CPU_PROGRAM_MAP(readmem,writemem)

	MDRV_MACHINE_RESET(irobot)
	MDRV_NVRAM_HANDLER(generic_0fill)

	/* video hardware */
	MDRV_SCREEN_ADD("screen", RASTER)
	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(32*8, 32*8)
	MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 0*8, 29*8-1)

	MDRV_GFXDECODE(irobot)
	MDRV_PALETTE_LENGTH(64 + 32)	/* 64 for polygons, 32 for text */

	MDRV_PALETTE_INIT(irobot)
	MDRV_VIDEO_START(irobot)
	MDRV_VIDEO_UPDATE(irobot)

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

	MDRV_SOUND_ADD("pokey1", POKEY, 1250000)
	MDRV_SOUND_CONFIG(pokey_config)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)

	MDRV_SOUND_ADD("pokey2", POKEY, 1250000)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)

	MDRV_SOUND_ADD("pokey3", POKEY, 1250000)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)

	MDRV_SOUND_ADD("pokey4", POKEY, 1250000)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MACHINE_DRIVER_END



/*************************************
 *
 *  ROM definitions
 *
 *************************************/

ROM_START( irobot )
	ROM_REGION( 0x20000, "maincpu", 0 ) /* 64k for code + 48K Banked ROM*/
	ROM_LOAD( "136029-208.bin",     0x06000, 0x2000, CRC(b4d0be59) SHA1(5b476dbee8b171a96301b2204420161333d4ca97) )
	ROM_LOAD( "136029-209.bin",     0x08000, 0x4000, CRC(f6be3cd0) SHA1(a88ae0cc9ee22aa5dd3db0173f24313189f894f8) )
	ROM_LOAD( "136029-210.bin",     0x0c000, 0x4000, CRC(c0eb2133) SHA1(daa77293678b7e822d0672b90789c53098c5451e) )
	ROM_LOAD( "136029-405.bin",     0x10000, 0x4000, CRC(9163efe4) SHA1(5d71d8ec80c9be4726189d48ad519b4638160d64) )
	ROM_LOAD( "136029-206.bin",     0x14000, 0x4000, CRC(e114a526) SHA1(bd94ad4d536f681efa81153050a12098a31d79cf) )
	ROM_LOAD( "136029-207.bin",     0x18000, 0x4000, CRC(b4556cb0) SHA1(2e0c1e4c265e7d232ca86d5c8760e32fc49fe08d) )

	ROM_REGION16_BE( 0x10000, "mathbox", 0 )  /* mathbox region */
	ROM_LOAD16_BYTE( "136029-104.bin", 0x0000,  0x2000, CRC(0a6cdcca) SHA1(b9fd76eae8ca24fa3abc30c46bbf30d89943d97d) )
	ROM_LOAD16_BYTE( "136029-103.bin", 0x0001,  0x2000, CRC(0c83296d) SHA1(c1f4041a58f395e24855254849604dfe3b8b0d71) )	/* ROM data from 0000-bfff */
	ROM_LOAD16_BYTE( "136029-102.bin", 0x4000,  0x4000, CRC(9d588f22) SHA1(787ec3e642e1dc3417477348afa88c764e1f2a88) )
	ROM_LOAD16_BYTE( "136029-101.bin", 0x4001,  0x4000, CRC(62a38c08) SHA1(868bb3fe5657a4ce45c3dd04ba26a7fb5a5ded42) )
	/* RAM data from c000-dfff */
	/* COMRAM from   e000-ffff */

	ROM_REGION( 0x800, "gfx1", ROMREGION_DISPOSE )
	ROM_LOAD( "136029-124.bin",     0x0000,  0x0800, CRC(848948b6) SHA1(743c6570c787bc9a2a14716adc66b8e2fe57129f) )

	ROM_REGION( 0x3420, "proms", 0 )
	ROM_LOAD( "136029-125.bin",      0x0000,  0x0020, CRC(446335ba) SHA1(5b42cc065bfac467028ae883844c8f94465c3666) )
	ROM_LOAD( "136029-111.bin",      0x0020,  0x0400, CRC(9fbc9bf3) SHA1(33dee2382e1e3899ffbaea859a67af7334270b4a) )	/* program ROMs from c000-f3ff */
	ROM_LOAD( "136029-112.bin",      0x0420,  0x0400, CRC(b2713214) SHA1(4e1ea039e7a3e341796097b0c6943a4805b89f56) )
	ROM_LOAD( "136029-113.bin",      0x0820,  0x0400, CRC(7875930a) SHA1(63a3818450a76d230a75f038b140c3934659313e) )
	ROM_LOAD( "136029-114.bin",      0x0c20,  0x0400, CRC(51d29666) SHA1(34887df0f1ac064b4cf4252a225406e8b30872c6) )
	ROM_LOAD( "136029-115.bin",      0x1020,  0x0400, CRC(00f9b304) SHA1(46b4495002ddf80668a66a4f85cab99432677b50) )
	ROM_LOAD( "136029-116.bin",      0x1420,  0x0400, CRC(326aba54) SHA1(e4caab90910b3aa16c314909f8c02eaf212449a1) )
	ROM_LOAD( "136029-117.bin",      0x1820,  0x0400, CRC(98efe8d0) SHA1(39532fc1b14714396764500a9b1c9e4fed97a970) )
	ROM_LOAD( "136029-118.bin",      0x1c20,  0x0400, CRC(4a6aa7f9) SHA1(163e8e764b400d726c725b6a45901c311e62667e) )
	ROM_LOAD( "136029-119.bin",      0x2020,  0x0400, CRC(a5a13ad8) SHA1(964a87c879c953563ca84f8e3c1201302c7b2b91) )
	ROM_LOAD( "136029-120.bin",      0x2420,  0x0400, CRC(2a083465) SHA1(35ca23d5bbdc2827afb823a974864b96eb135797) )
	ROM_LOAD( "136029-121.bin",      0x2820,  0x0400, CRC(adebcb99) SHA1(4628f8af43d82e578833b1452ec747eeb822b4e4) )
	ROM_LOAD( "136029-122.bin",      0x2c20,  0x0400, CRC(da7b6f79) SHA1(02398ba6e7c56d961bf92e2755e530db1144219d) )
	ROM_LOAD( "136029-123.bin",      0x3020,  0x0400, CRC(39fff18f) SHA1(85f338eeff7d8ed58804611bf8446ebb697d196d) )
ROM_END

	/*  Colorprom from John's driver. ? */
	/*  ROM_LOAD( "136029.125",    0x0000, 0x0020, CRC(c05abf82) ) */



/*************************************
 *
 *  Game drivers
 *
 *************************************/

GAME( 1983, irobot, 0, irobot, irobot, irobot, ROT0, "Atari", "I, Robot", 0 )
