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// license:BSD-3-Clause
// copyright-holders:Mike Coates, Pierpaolo Prazzoli
/************************************************************************

  Zaccaria S2650 '80s games

  Driver by Mike Coates and Pierpaolo Prazzoli

  TODO:

  Quasar
  ------
  - Sound (missing invader effect - still not sure all noise in correct places)
  - Phase 3 - seems awfully hard - dip settings ?
  - Hook up Coin Counter
  - Test/Service Mode - not working?

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

Quasar by Zaccaria (1980)

1K files were 2708
2K files were 2716
512 file was an 82S130 (colour and priority PROM)

2650A CPU

I8085 Sound Board

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

#include "emu.h"
#include "includes/quasar.h"
#include "cpu/s2650/s2650.h"
#include "cpu/mcs48/mcs48.h"
#include "sound/volt_reg.h"
#include "speaker.h"

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

  Quasar memory layout

  Paging for screen is controlled by OUT to 0,1,2 or 3

  Paging for IO ports is controlled by OUT to 8,9,A or B

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

WRITE8_MEMBER(quasar_state::video_page_select_w)
{
	m_page = offset & 0x03;
}

WRITE8_MEMBER(quasar_state::io_page_select_w)
{
	m_io_page = offset & 0x03;
}

WRITE8_MEMBER(quasar_state::quasar_video_w)
{
	switch (m_page)
	{
	case 0:  m_video_ram[offset] = data; break;
	case 1:  m_color_ram[offset] = data & 7; break; // 3 bits of ram only - 3 x 2102
	case 2:  m_effectram[offset] = data; break;
	case 3:  m_effectcontrol = data; break;
	}
}

READ8_MEMBER(quasar_state::quasar_IO_r)
{
	uint8_t ans = 0;

	switch (m_io_page)
	{
	case 0:  ans = ioport("IN0")->read(); break;
	case 1:  ans = ioport("IN1")->read(); break;
	case 2:  ans = ioport("DSW0")->read(); break;
	case 3:  ans = ioport("DSW1")->read(); break;
	}

	return ans;
}

WRITE8_MEMBER(quasar_state::quasar_bullet_w)
{
	m_bullet_ram[offset] = (data ^ 0xff);
}

WRITE8_MEMBER(quasar_state::quasar_sh_command_w)
{
	// bit 4 = Sound Invader : Linked to an NE555V circuit
	// Not handled yet

	// lower nibble = command to I8035
	// not necessarily like this, but it seems to work better than direct mapping
	// (although schematics has it as direct - but then the schematics are wrong elsewhere to!)
	m_soundlatch->write(space, 0, (data & 8) + ((data >> 1) & 3) + ((data << 2) & 4));
}

READ8_MEMBER(quasar_state::quasar_sh_command_r)
{
	return m_soundlatch->read(space, 0) + (ioport("DSW2")->read() & 0x30);
}

READ_LINE_MEMBER(quasar_state::audio_t1_r)
{
	return (m_soundlatch->read(machine().dummy_space(), 0) == 0);
}

// memory map taken from the manual

void quasar_state::quasar(address_map &map)
{
	map(0x0000, 0x13ff).rom();
	map(0x1400, 0x14ff).mirror(0x6000).r(this, FUNC(quasar_state::cvs_bullet_ram_or_palette_r)).w(this, FUNC(quasar_state::quasar_bullet_w)).share("bullet_ram");
	map(0x1500, 0x15ff).mirror(0x6000).rw(this, FUNC(quasar_state::cvs_s2636_0_or_character_ram_r), FUNC(quasar_state::cvs_s2636_0_or_character_ram_w));
	map(0x1600, 0x16ff).mirror(0x6000).rw(this, FUNC(quasar_state::cvs_s2636_1_or_character_ram_r), FUNC(quasar_state::cvs_s2636_1_or_character_ram_w));
	map(0x1700, 0x17ff).mirror(0x6000).rw(this, FUNC(quasar_state::cvs_s2636_2_or_character_ram_r), FUNC(quasar_state::cvs_s2636_2_or_character_ram_w));
	map(0x1800, 0x1bff).mirror(0x6000).r(this, FUNC(quasar_state::cvs_video_or_color_ram_r)).w(this, FUNC(quasar_state::quasar_video_w)).share("video_ram");
	map(0x1c00, 0x1fff).mirror(0x6000).ram();
	map(0x2000, 0x33ff).rom();
	map(0x4000, 0x53ff).rom();
	map(0x6000, 0x73ff).rom();
}

void quasar_state::quasar_io(address_map &map)
{
	map(0x00, 0x03).rw(this, FUNC(quasar_state::quasar_IO_r), FUNC(quasar_state::video_page_select_w));
	map(0x08, 0x0b).w(this, FUNC(quasar_state::io_page_select_w));
}

void quasar_state::quasar_data(address_map &map)
{
	map(S2650_CTRL_PORT, S2650_CTRL_PORT).r(this, FUNC(quasar_state::cvs_collision_r)).nopw();
	map(S2650_DATA_PORT, S2650_DATA_PORT).rw(this, FUNC(quasar_state::cvs_collision_clear), FUNC(quasar_state::quasar_sh_command_w));
}

/*************************************
 *
 *  Sound board memory handlers
 *
 *************************************/

void quasar_state::sound_map(address_map &map)
{
	map(0x0000, 0x07ff).rom();
}

void quasar_state::sound_portmap(address_map &map)
{
	map(0x00, 0x7f).ram();
	map(0x80, 0x80).r(this, FUNC(quasar_state::quasar_sh_command_r));
}

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

  Inputs

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

static INPUT_PORTS_START( quasar )
	PORT_START("IN0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_TILT )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE )            /* test switch */

	PORT_START("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )            /* table (from manual) */
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_COCKTAIL
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )            /* count enable (from manual) */

	PORT_START("DSW0")
	PORT_DIPNAME( 0x0c, 0x04, DEF_STR( Coin_A ) )           /* confirmed */
	PORT_DIPSETTING(    0x00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Coin_B ) )           /* confirmed */
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_5C ) )
	PORT_DIPNAME( 0x30, 0x00, "Number of Rockets" )         /* confirmed */
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x10, "4" )
	PORT_DIPSETTING(    0x20, "5" )
	PORT_DIPSETTING(    0x30, "6" )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Free_Play ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, "Test Mode" )                 /* confirmed */
	PORT_DIPSETTING(    0x00, "Collisions excluded" )
	PORT_DIPSETTING(    0x80, "Collisions included" )

	PORT_START("DSW1")
	PORT_DIPNAME( 0x07, 0x01, "High Score" )
	PORT_DIPSETTING(    0x00, "No H.S." ) // this option only wants bit 0 OFF
	PORT_DIPSETTING(    0x01, "Normal H.S." )
	PORT_DIPSETTING(    0x03, "Low H.S." )
	PORT_DIPSETTING(    0x05, "Medium H.S." )
	PORT_DIPSETTING(    0x07, "High H.S." )
	PORT_DIPNAME( 0x18, 0x10, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x18, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Medium ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Difficult ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Very_Difficult ) )
	PORT_DIPNAME( 0x60, 0x20, "Extended Play" )
	PORT_DIPSETTING(    0x20, "5500" )                      /* confirmed */
	PORT_DIPSETTING(    0x40, "7500" )
	PORT_DIPSETTING(    0x60, "9500" )
	PORT_DIPSETTING(    0x00, "17500" )
	PORT_DIPNAME( 0x80, 0x80, "Full Screen Rocket" )        /* confirmed */
	PORT_DIPSETTING(    0x80, "Stop at edge" )
	PORT_DIPSETTING(    0x00, "Wrap Around" )

	PORT_START("DSW2")
#if 0
	PORT_DIPNAME( 0x0f, 0x00, "Noise to play" )
	PORT_DIPSETTING(    0x00, "00" )
	PORT_DIPSETTING(    0x01, "01" )
	PORT_DIPSETTING(    0x02, "02" )
	PORT_DIPSETTING(    0x03, "03" )
	PORT_DIPSETTING(    0x04, "04" )
	PORT_DIPSETTING(    0x05, "05" )
	PORT_DIPSETTING(    0x06, "06" )
	PORT_DIPSETTING(    0x07, "07" )
	PORT_DIPSETTING(    0x08, "08" )
	PORT_DIPSETTING(    0x09, "09" )
	PORT_DIPSETTING(    0x0a, "0A" )
	PORT_DIPSETTING(    0x0b, "0B" )
	PORT_DIPSETTING(    0x0c, "0C" )
	PORT_DIPSETTING(    0x0d, "0D" )
	PORT_DIPSETTING(    0x0e, "0E" )
	PORT_DIPSETTING(    0x0f, "0F" )
#endif
	PORT_DIPNAME( 0x10, 0x10, "Sound Test" )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unused ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

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
};

/* S2636 Mappings */

static GFXDECODE_START( gfx_quasar )
	GFXDECODE_ENTRY( "gfx1", 0x0000, charlayout, 0, 64+1 )  /* ROM chars */
GFXDECODE_END

INTERRUPT_GEN_MEMBER(quasar_state::quasar_interrupt)
{
	device.execute().set_input_line_and_vector(0, HOLD_LINE, 0x03);
}

// ****************************************
// Quasar S2650 Main CPU, I8035 sound board
// ****************************************

MACHINE_START_MEMBER(quasar_state,quasar)
{
	cvs_state::machine_start();

	/* register state save */
	save_item(NAME(m_effectcontrol));
	save_item(NAME(m_page));
	save_item(NAME(m_io_page));
}

MACHINE_RESET_MEMBER(quasar_state,quasar)
{
	cvs_state::machine_reset();

	m_effectcontrol = 0;
	m_page = 0;
	m_io_page = 8;
}

MACHINE_CONFIG_START(quasar_state::quasar)

	/* basic machine hardware */
	MCFG_DEVICE_ADD("maincpu", S2650, 14318000/4)  /* 14 mhz crystal divide by 4 on board */
	MCFG_DEVICE_PROGRAM_MAP(quasar)
	MCFG_DEVICE_IO_MAP(quasar_io)
	MCFG_DEVICE_DATA_MAP(quasar_data)
	MCFG_DEVICE_VBLANK_INT_DRIVER("screen", quasar_state,  quasar_interrupt)
	MCFG_S2650_SENSE_INPUT(READLINE("screen", screen_device, vblank))

	MCFG_DEVICE_ADD("soundcpu",I8035,6000000)          /* 6MHz crystal divide by 15 in CPU */
	MCFG_DEVICE_PROGRAM_MAP(sound_map)
	MCFG_DEVICE_IO_MAP(sound_portmap)
	MCFG_MCS48_PORT_T1_IN_CB(READLINE(*this, quasar_state, audio_t1_r))
	MCFG_MCS48_PORT_P1_OUT_CB(WRITE8("dac", dac_byte_interface, write))

	MCFG_MACHINE_START_OVERRIDE(quasar_state,quasar)
	MCFG_MACHINE_RESET_OVERRIDE(quasar_state,quasar)

	MCFG_QUANTUM_TIME(attotime::from_hz(6000))

	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(50)                            /* From dot clock */
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
	MCFG_SCREEN_SIZE(256, 256)
	MCFG_SCREEN_VISIBLE_AREA(1*8+1, 29*8-1, 2*8, 32*8-1)
	MCFG_SCREEN_UPDATE_DRIVER(quasar_state, screen_update_quasar)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_quasar)
	MCFG_PALETTE_ADD("palette", (64+1)*8+(4*256))
	MCFG_PALETTE_INDIRECT_ENTRIES(0x500)
	MCFG_PALETTE_INIT_OWNER(quasar_state,quasar)

	MCFG_DEVICE_ADD("s2636_0", S2636, 0)
	MCFG_S2636_OFFSETS(CVS_S2636_Y_OFFSET - 8, CVS_S2636_X_OFFSET - 9)

	MCFG_DEVICE_ADD("s2636_1", S2636, 0)
	MCFG_S2636_OFFSETS(CVS_S2636_Y_OFFSET - 8, CVS_S2636_X_OFFSET - 9)

	MCFG_DEVICE_ADD("s2636_2", S2636, 0)
	MCFG_S2636_OFFSETS(CVS_S2636_Y_OFFSET - 8, CVS_S2636_X_OFFSET - 9)

	MCFG_VIDEO_START_OVERRIDE(quasar_state,quasar)

	/* sound hardware */
	MCFG_GENERIC_LATCH_8_ADD("soundlatch")

	SPEAKER(config, "speaker").front_center();
	MCFG_DEVICE_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 1.0) // unknown DAC
	MCFG_DEVICE_ADD("vref", VOLTAGE_REGULATOR, 0) MCFG_VOLTAGE_REGULATOR_OUTPUT(5.0)
	MCFG_SOUND_ROUTE(0, "dac", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE(0, "dac", -1.0, DAC_VREF_NEG_INPUT)
MACHINE_CONFIG_END

ROM_START( quasar )
	ROM_REGION( 0x8000, "maincpu", 0 )
	ROM_LOAD( "7b_01.bin",    0x0000, 0x0400, CRC(20a7feaf) SHA1(ab89087efca2fcb9568f49ba117755ae2c1bd3a3) )
	ROM_CONTINUE(             0x4000, 0x0400 )
	ROM_LOAD( "6b_02.bin",    0x0400, 0x0400, CRC(c14af4a1) SHA1(ca2d3aff94db43aa7c25d33b345a53f484f679cd) )
	ROM_CONTINUE(             0x4400, 0x0400 )
	ROM_LOAD( "5b_03.bin",    0x0800, 0x0400, CRC(3f051d8b) SHA1(1dd7a5eddfb0d7871705ac9ec1b9c16c2b80ddf0) )
	ROM_CONTINUE(             0x4800, 0x0400 )
	ROM_LOAD( "3b_04.bin",    0x0c00, 0x0400, CRC(e14d04ed) SHA1(3176902e3efd72946468c7e7a221d88fcbf63c97) )
	ROM_CONTINUE(             0x4c00, 0x0400 )
	ROM_LOAD( "2b_05.bin",    0x1000, 0x0400, CRC(f2113222) SHA1(576e0ac92ba076e00eeeae73892246f92fff252a) )
	ROM_CONTINUE(             0x5000, 0x0400 )
	ROM_LOAD( "7c_06.bin",    0x2000, 0x0400, CRC(f7f1267d) SHA1(29c99191b0b6186af6772d04543a5fd235f5eafd) )
	ROM_LOAD( "6c_07.bin",    0x2400, 0x0400, CRC(772004eb) SHA1(bfafb6005a1a0cff39b76ec0ad4ea1f438a2f174) )
	ROM_LOAD( "5c_08.bin",    0x2800, 0x0400, CRC(7a87b6f3) SHA1(213b8ccd7bdd650e19d2746b2d617c1950ba3d2b) )
	ROM_LOAD( "3c_09.bin",    0x2c00, 0x0400, CRC(ef87c2cb) SHA1(1ba10dd3996c047e595c54a37c1abb44df3b63c6) )
	ROM_LOAD( "2c_10.bin",    0x3000, 0x0400, CRC(be6c4f84) SHA1(b3a779457bd0d33ccb23c21a7e7cd4a6fc78bb7f) )

	ROM_REGION( 0x1000, "soundcpu", 0 )
	ROM_LOAD( "quasar.snd",   0x0000, 0x0800, CRC(9e489768) SHA1(a9f01ef0a6512543bbdfec56037f37a0440b2b94) )

	ROM_REGION( 0x1800, "gfx1", 0 )
	ROM_LOAD( "6g.bin",       0x0000, 0x0800, CRC(deb2f4a9) SHA1(9a15d07a9b35bef34ce923973fc59fbd911f8111) )
	ROM_LOAD( "7g.bin",       0x0800, 0x0800, CRC(76222f30) SHA1(937286fcb50bd0a61db9e71e04b5eb1a0746e1c0) )
	ROM_LOAD( "9g.bin",       0x1000, 0x0800, CRC(fd0a36e9) SHA1(93f1207a36418b9ab15a25163a092308b9916528) )

	ROM_REGION( 0x0200, "proms", 0 )
	ROM_LOAD( "12m_q.bin",    0x0000, 0x0200, CRC(1ab8633d) SHA1(3aed29f2326676a8d8a5de6f6bb923b6510896d8) )
ROM_END

ROM_START( quasara )
	ROM_REGION( 0x8000, "maincpu", 0 )
	ROM_LOAD( "7b_01.bin",    0x0000, 0x0400, CRC(20a7feaf) SHA1(ab89087efca2fcb9568f49ba117755ae2c1bd3a3) )
	ROM_CONTINUE(             0x4000, 0x0400 )
	ROM_LOAD( "6b_02.bin",    0x0400, 0x0400, CRC(c14af4a1) SHA1(ca2d3aff94db43aa7c25d33b345a53f484f679cd) )
	ROM_CONTINUE(             0x4400, 0x0400 )
	ROM_LOAD( "5b_03.bin",    0x0800, 0x0400, CRC(3f051d8b) SHA1(1dd7a5eddfb0d7871705ac9ec1b9c16c2b80ddf0) )
	ROM_CONTINUE(             0x4800, 0x0400 )
	ROM_LOAD( "3b_04.bin",    0x0c00, 0x0400, CRC(e14d04ed) SHA1(3176902e3efd72946468c7e7a221d88fcbf63c97) )
	ROM_CONTINUE(             0x4c00, 0x0400 )
	ROM_LOAD( "2b_05.bin",    0x1000, 0x0400, CRC(f2113222) SHA1(576e0ac92ba076e00eeeae73892246f92fff252a) )
	ROM_CONTINUE(             0x5000, 0x0400 )
	ROM_LOAD( "7c_06.bin",    0x2000, 0x0400, CRC(f7f1267d) SHA1(29c99191b0b6186af6772d04543a5fd235f5eafd) )
	ROM_LOAD( "6c_07.bin",    0x2400, 0x0400, CRC(772004eb) SHA1(bfafb6005a1a0cff39b76ec0ad4ea1f438a2f174) )
	ROM_LOAD( "5c_08.bin",    0x2800, 0x0400, CRC(7a87b6f3) SHA1(213b8ccd7bdd650e19d2746b2d617c1950ba3d2b) )
	ROM_LOAD( "3c_09.bin",    0x2c00, 0x0400, CRC(ef87c2cb) SHA1(1ba10dd3996c047e595c54a37c1abb44df3b63c6) )
	ROM_LOAD( "2c_10a.bin",   0x3000, 0x0400, CRC(a31c0435) SHA1(48e1c5da455610145310dfe4c6b6e4302b531876) ) // different from quasar set

	ROM_REGION( 0x1000, "soundcpu", 0 )
	ROM_LOAD( "quasar.snd",   0x0000, 0x0800, CRC(9e489768) SHA1(a9f01ef0a6512543bbdfec56037f37a0440b2b94) )

	ROM_REGION( 0x1800, "gfx1", 0 )
	ROM_LOAD( "6g.bin",       0x0000, 0x0800, CRC(deb2f4a9) SHA1(9a15d07a9b35bef34ce923973fc59fbd911f8111) )
	ROM_LOAD( "7g.bin",       0x0800, 0x0800, CRC(76222f30) SHA1(937286fcb50bd0a61db9e71e04b5eb1a0746e1c0) )
	ROM_LOAD( "9g.bin",       0x1000, 0x0800, CRC(fd0a36e9) SHA1(93f1207a36418b9ab15a25163a092308b9916528) )

	ROM_REGION( 0x0200, "proms", 0 )
	ROM_LOAD( "12m_q.bin",    0x0000, 0x0200, CRC(1ab8633d) SHA1(3aed29f2326676a8d8a5de6f6bb923b6510896d8) )
ROM_END


GAME( 1980, quasar,   0,      quasar,   quasar, quasar_state, empty_init, ROT90, "Zaccaria / Zelco", "Quasar (set 1)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )
GAME( 1980, quasara,  quasar, quasar,   quasar, quasar_state, empty_init, ROT90, "Zaccaria / Zelco", "Quasar (set 2)", MACHINE_IMPERFECT_GRAPHICS | MACHINE_IMPERFECT_SOUND | MACHINE_SUPPORTS_SAVE )