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/***************************************
Attack ufo / Ryoto Electric Co. 1980(?)
 driver  by Tomasz Slanina

Video and sound emulation based on
 VIC 656x driver by PeT

TODO:
 - correct I/O chip emulation
 - dips
 - is game speed ok? a bit slow sometimes

--

CPU - 6502
  2,38 +5
  21 gnd
  26-33 data bus

I/O - CIA 6526 ?
  37,38 +5
  1 gnd
  2-18 I/O
  26-33 data bus

Vid  - VIC 6560 derivative ???
  40 +5
  20 gnd
  16-32 data bus

--

Attack UFO
???? 1980
LOIPOIO-B

2  1   2114 2114 2114 2114 2114
8  7  6  5   4  3               40pin IC "C"

53354    40pin IC "B" 14.318MHz 40pin IC "A"
                                SW

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

#include "driver.h"
#include "cpu/m6502/m6502.h"
#include "includes/attckufo.h"


static const custom_sound_interface attckufo_sound_interface =
{
	attckufo_custom_start
};

static UINT8 *mainram;
static UINT8 *tileram;

static PALETTE_INIT( attckufo )
{
	palette_set_colors(machine, 0, attckufo_palette, ARRAY_LENGTH(attckufo_palette));
}


static READ8_HANDLER(attckufo_io_r)
{
	switch(offset)
	{
		case 0: return input_port_read(space->machine, "DSW");
		case 2: return input_port_read(space->machine, "INPUT");
	}
	return 0xff;
}


static WRITE8_HANDLER(attckufo_io_w)
{
	/*
    offset, data:
     0   $00,$30
     1   $00,$04
     2   $00
     3   $00,$04
    */
}

static ADDRESS_MAP_START( cpu_map, ADDRESS_SPACE_PROGRAM, 8 )
	ADDRESS_MAP_GLOBAL_MASK(0x3fff)
	AM_RANGE(0x0000, 0x0fff) AM_RAM AM_BASE(&mainram)
	AM_RANGE(0x1000, 0x100f) AM_READWRITE(attckufo_port_r, attckufo_port_w)
	AM_RANGE(0x1400, 0x1403) AM_READWRITE(attckufo_io_r, attckufo_io_w)
	AM_RANGE(0x1c00, 0x1fff) AM_RAM AM_BASE(&tileram)
	AM_RANGE(0x2000, 0x3fff) AM_ROM
ADDRESS_MAP_END

static INPUT_PORTS_START( attckufo )
	PORT_START("DSW")
	PORT_DIPNAME( 0x03, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPSETTING(    0x03, "6" )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	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_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START("INPUT")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(1)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(1)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(2)
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(2)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
INPUT_PORTS_END


static MACHINE_DRIVER_START( attckufo )
	MDRV_CPU_ADD("main", M6502, 14318181/14)
	MDRV_CPU_PROGRAM_MAP(cpu_map, 0)
	MDRV_CPU_PERIODIC_INT(attckufo_raster_interrupt, 15625)

  /* video hardware */

	MDRV_SCREEN_ADD("main", 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(256, 256)
	MDRV_SCREEN_VISIBLE_AREA(0, 23*8-1, 0, 22*8-1)

	MDRV_PALETTE_LENGTH(ARRAY_LENGTH(attckufo_palette))
	MDRV_PALETTE_INIT( attckufo )

	MDRV_VIDEO_UPDATE( attckufo )

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD("attckufo", CUSTOM, 0)
	MDRV_SOUND_CONFIG(attckufo_sound_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_DRIVER_END

ROM_START( attckufo )
	ROM_REGION( 0x4000, "main", 0 )
	ROM_LOAD( "1", 0x2000, 0x0400, CRC(b32a36ab) SHA1(4e64686d498f7a79f5213c42b7afbf35aac2b622) )
	ROM_LOAD( "2", 0x2400, 0x0400, CRC(35fc8424) SHA1(d4926768f2e5b21476c7ec33743fe3e1c76662db) )
	ROM_LOAD( "3", 0x2800, 0x0400, CRC(6341c8c4) SHA1(8647a4fabad0399769dd068d784be72e27afca35) )
	ROM_LOAD( "4", 0x2c00, 0x0400, CRC(1ed1d93f) SHA1(2e04c63ea2fc958415f7c7de9d18dadf9e085755) )
	ROM_LOAD( "5", 0x3000, 0x0400, CRC(3380e0f4) SHA1(e1d681f7370ba7fc2bf3561533f4aaf12eefbcb8) )
	ROM_LOAD( "6", 0x3400, 0x0400, CRC(8103e031) SHA1(86bc8dd6c74b84804ede31a8454b5b3d3e4d88b1) )
	ROM_LOAD( "7", 0x3800, 0x0400, CRC(43a41012) SHA1(edd14f49dc9ae7a5a14583b9a92ebbbdd021d7b1) )
	ROM_LOAD( "8", 0x3c00, 0x0400, CRC(9ce93eb0) SHA1(68753e88db4e920446b9582b5cb713b1beec3b27) )

	ROM_REGION( 0x400, "user1", 0 )
	ROM_COPY( "main", 0x02000, 0x00000, 0x400)

ROM_END

GAME( 1980, attckufo,  0,     attckufo, attckufo, 0, ROT270, "Ryoto Electric Co.", "Attack Ufo", 0)