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<?xml version="1.0"?>
<!DOCTYPE softwarelist SYSTEM "softwarelist.dtd">
<!--
license:CC0-1.0
-->
<softwarelist name="softbox" description="SSE SoftBox diskettes">

	<software name="cpm22">
		<description>SoftBox CP/M 2.2 Distribution Disk</description>
		<year>1981</year>
		<publisher>Small Systems Engineering</publisher>

		<part name="flop1" interface="floppy_5_25">
			<dataarea name="flop" size="533248">
				<rom name="softbox-distrib.d80" size="533248" crc="48b070d5" sha1="acab30ea2859433bb75312936d6380dad3c61a00"/>
			</dataarea>
		</part>
	</software>

	<software name="corvus11">
		<description>SoftBox CP/M 2.2 (Corvus Model 11)</description>
		<year>1981</year>
		<publisher>Small Systems Engineering</publisher>

		<!-- Corvus Model 11 (10 MB): IMI 5012H -->
		<part name="hdd" interface="corvus_hdd">
			<diskarea name="harddriv">
				<disk name="imi5012h" sha1="ae7bdad4dfeee1351e67ffcbf8c634006c03697f" writeable="yes" />
			</diskarea>
		</part>
	</software>

</softwarelist>
>450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866
// license:BSD-3-Clause
// copyright-holders:hap
/******************************************************************************

『コズモギャングス』 (COSMOGANGS) by Namco, 1990. USA distribution was handled by
Data East, they titled it "Cosmo Gang".

It is an electromechanical arcade lightgun game. There is no screen, feedback
is with motorized elements, lamps and 7segs, and of course sounds and music.

To shoot the targets in MAME, either enable -mouse and click on one of the
cosmogang lanes(left mouse button doubles as gun trigger by default).
Or, configure the gun aim inputs and share them with the trigger. For example
use Z,X,C,V,B for the gun aims, and "Z or X or C or V or B" for the trigger.

TODO:
- dump/add Japanese version
- game can't be played properly within MAME's constraints (mechanical stuff,
  and the lightguns linked to it)
- shot target is sometimes ignored, maybe a BTANB? since it's easy to dismiss
  on the real thing as a missed aim. It turns on the lightgun lamp but then
  doesn't read the lightsensor.

-------------------------------------------------------------------------------

Hardware notes:

Main CPU side:
- Hitachi HD6809P @ 4MHz
- Hitachi HA1835P watchdog timer
- 32KB ROM(27C256), 8KB RAM(HM6264AP-10)
- 4*M5L8255AP-5 PPI, 2*M5L8253P-5 PIT
- 5*MB8713 motor drivers

Audio CPU side:
- Hitachi HD68B09EP @ 2MHz (8MHz XTAL)
- 32KB ROM(27C256), 16KB RAM(2*HM6264AP-10, some pins N/C)
- M5L8255AP-5 PPI
- Namco CUS121 sound interface, same chip used in Namco System 1
- Yamaha YM2151 @ 3.57MHz, 2*NEC D7759C @ 640kHz
- 2*128KB ADPCM ROM (27C010, one for each D7759C; labels usually peeled off
  or handwritten, perhaps due to field upgrade)

Cabinet:
- 5 lanes with movable aliens, lightsensor under mouth
- 5 'energy crates', aliens will try to steal them
- 2 lightguns
- UFO with leds above cabinet
- sliding door (only for Japan version?)
- 7segs for scorekeeping
- 2 speakers (but final mix is mono!)
- optional ticket/prize dispenser

Overall, the hardware has similarities with Wacky Gator, see wacky_gator.cpp.

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

#include "emu.h"

#include "cpu/m6809/m6809.h"
#include "machine/gen_latch.h"
#include "machine/i8255.h"
#include "machine/pit8253.h"
#include "machine/ripple_counter.h"
#include "machine/ticket.h"
#include "machine/timer.h"
#include "machine/watchdog.h"
#include "sound/upd7759.h"
#include "sound/ym2151.h"
#include "video/pwm.h"

#include "speaker.h"

// internal artwork
#include "cgang.lh" // clickable


namespace {

// length of the sliding door in msec (time it takes to open or close)
static constexpr int DOOR_MOTOR_LIMIT = 2000;

// length of each cosmogang lane, in motor steps
// At game start, one cosmo going forward takes around 7 seconds, and if the player does nothing
// at the 1st round, game is lost with around 10 seconds remaining (compared to video recording).
static constexpr int CG_MOTOR_LIMIT = 1000;


class cgang_state : public driver_device
{
public:
	cgang_state(const machine_config &mconfig, device_type type, const char *tag) :
		driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_audiocpu(*this, "audiocpu"),
		m_watchdog(*this, "watchdog"),
		m_latch(*this, "latch%u", 0),
		m_pit(*this, "pit%u", 0),
		m_ppi(*this, "ppi%u", 0),
		m_ticket(*this, "ticket"),
		m_adpcm(*this, "adpcm%u", 0),
		m_ymsnd(*this, "ymsnd"),
		m_spot(*this, "spot"),
		m_digits(*this, "digits"),
		m_fake(*this, "FAKE%u", 1),
		m_conf(*this, "CONF1"),
		m_dipsw(*this, "SW%u", 1),
		m_gun_lamps(*this, "gun_lamp%u", 0U),
		m_spot_lamps(*this, "spot_lamp%u", 0U),
		m_misc_lamps(*this, "misc_lamp%u", 0U),
		m_ufo_lamps(*this, "ufo_lamp%u", 0U),
		m_ufo_sol(*this, "ufo_sol"),
		m_en_sol(*this, "en_sol%u", 0U),
		m_cg_sol(*this, "cg_sol%u", 0U),
		m_door_count(*this, "door_count"),
		m_en_count(*this, "en_count%u", 0U),
		m_cg_count(*this, "cg_count%u", 0U)
	{ }

	// machine configs
	void cgang(machine_config &config);

protected:
	virtual void machine_start() override;
	virtual void machine_reset() override;

private:
	// devices/pointers
	required_device<cpu_device> m_maincpu;
	required_device<cpu_device> m_audiocpu;
	required_device<watchdog_timer_device> m_watchdog;
	required_device_array<generic_latch_8_device, 2> m_latch;
	required_device_array<pit8253_device, 2> m_pit;
	required_device_array<i8255_device, 5> m_ppi;
	required_device<ticket_dispenser_device> m_ticket;
	required_device_array<upd7759_device, 2> m_adpcm;
	required_device<ym2151_device> m_ymsnd;
	required_device<pwm_display_device> m_spot;
	required_device<pwm_display_device> m_digits;
	required_ioport_array<2> m_fake;
	required_ioport m_conf;
	required_ioport_array<4> m_dipsw;
	output_finder<2> m_gun_lamps;
	output_finder<8> m_spot_lamps;
	output_finder<2+3+1+2+3> m_misc_lamps;
	output_finder<8> m_ufo_lamps;
	output_finder<> m_ufo_sol;
	output_finder<5> m_en_sol;
	output_finder<5> m_cg_sol;
	output_finder<> m_door_count;
	output_finder<5> m_en_count;
	output_finder<5> m_cg_count;

	// address maps
	void main_map(address_map &map);
	void sound_map(address_map &map);

	// I/O handlers
	DECLARE_WRITE_LINE_MEMBER(main_irq_w);
	DECLARE_WRITE_LINE_MEMBER(main_firq_w);
	void main_irq_clear_w(u8 data);
	void main_firq_clear_w(u8 data);
	template<int N> DECLARE_WRITE_LINE_MEMBER(motor_clock_w);
	void cg_motor_tick(int i);
	TIMER_DEVICE_CALLBACK_MEMBER(door_motor_tick);
	void refresh_motor_output();

	u8 ppi1_b_r();
	u8 ppi1_c_r();
	u8 ppi2_a_r();
	u8 ppi2_b_r();
	void ppi2_c_w(u8 data);
	void ppi3_a_w(u8 data);
	void ppi3_b_w(u8 data);
	void ppi3_c_w(u8 data);
	void set_en_sol(int i, int state);
	void ppi4_a_w(u8 data);
	void ppi4_b_w(u8 data);
	void ppi4_c_w(u8 data);

	template<int N> void adpcm_w(u8 data);
	void spot_w(u8 data);
	void output_spot_w(offs_t offset, u8 data) { m_spot_lamps[offset >> 6] = data; }

	void ppi5_a_w(u8 data);
	void ppi5_b_w(u8 data);
	u8 ppi5_c_r();

	int m_watchdog_clk = 0;
	int m_main_irq = 0;
	int m_main_firq = 0;
	u8 m_door_motor_on = 0;
	int m_door_motor_pos = 0;
	u8 m_cg_motor_on = 0;
	u8 m_cg_motor_dir = 0;

	int m_cg_motor_clk[5];
	int m_cg_motor_pos[5];
	int m_en_pos[5];

	emu_timer *m_sol_filter[5];
	TIMER_CALLBACK_MEMBER(output_sol) { m_en_sol[param >> 1] = param & 1; }
};

void cgang_state::machine_start()
{
	for (int i = 0; i < 5; i++)
		m_sol_filter[i] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(cgang_state::output_sol),this));

	// resolve outputs
	m_gun_lamps.resolve();
	m_spot_lamps.resolve();
	m_misc_lamps.resolve();
	m_ufo_lamps.resolve();
	m_ufo_sol.resolve();
	m_en_sol.resolve();
	m_cg_sol.resolve();
	m_door_count.resolve();
	m_en_count.resolve();
	m_cg_count.resolve();

	// register for savestates
	save_item(NAME(m_watchdog_clk));
	save_item(NAME(m_main_irq));
	save_item(NAME(m_main_firq));
	save_item(NAME(m_door_motor_on));
	save_item(NAME(m_door_motor_pos));
	save_item(NAME(m_cg_motor_on));
	save_item(NAME(m_cg_motor_dir));
	save_item(NAME(m_cg_motor_clk));
	save_item(NAME(m_cg_motor_pos));
	save_item(NAME(m_en_pos));
}

void cgang_state::machine_reset()
{
	m_main_irq = 0;
	m_main_firq = 0;

	// initial motor positions
	for (int i = 0; i < 5; i++)
	{
		m_cg_motor_clk[i] = 0;
		m_cg_motor_pos[i] = 0;
		m_en_pos[i] = CG_MOTOR_LIMIT;
		m_en_sol[i] = 0;
	}

	m_door_motor_pos = 0;
	m_door_motor_on = 0;
	m_cg_motor_on = 0;

	refresh_motor_output();
}



/******************************************************************************
    I/O
******************************************************************************/

// maincpu (misc)

WRITE_LINE_MEMBER(cgang_state::main_irq_w)
{
	// irq on rising edge
	if (state && !m_main_irq)
		m_maincpu->set_input_line(M6809_IRQ_LINE, ASSERT_LINE);

	m_main_irq = state;
}

WRITE_LINE_MEMBER(cgang_state::main_firq_w)
{
	// firq on rising edge
	if (state && !m_main_firq)
		m_maincpu->set_input_line(M6809_FIRQ_LINE, ASSERT_LINE);

	m_main_firq = state;
}

void cgang_state::main_irq_clear_w(u8 data)
{
	m_maincpu->set_input_line(M6809_IRQ_LINE, CLEAR_LINE);
}

void cgang_state::main_firq_clear_w(u8 data)
{
	m_maincpu->set_input_line(M6809_FIRQ_LINE, CLEAR_LINE);
}

template<int N>
WRITE_LINE_MEMBER(cgang_state::motor_clock_w)
{
	// clock stepper motors
	if (state && !m_cg_motor_clk[N] && BIT(m_cg_motor_on, N))
		cg_motor_tick(N);

	m_cg_motor_clk[N] = state;
}

void cgang_state::cg_motor_tick(int i)
{
	// note: the cosmogangs are stuck on the drive belts(5),
	// and the energy crates can lock themselves into position

	if (BIT(m_cg_motor_dir, i))
	{
		if (m_cg_motor_pos[i] > 0)
		{
			// pull energy crate
			if (m_en_sol[i] && m_cg_motor_pos[i] == m_en_pos[i])
				m_en_pos[i]--;

			m_cg_motor_pos[i]--;
		}
	}
	else
	{
		if (m_cg_motor_pos[i] < CG_MOTOR_LIMIT)
		{
			if (m_cg_motor_pos[i] < m_en_pos[i])
				m_cg_motor_pos[i]++;

			// push energy crate
			else if (m_en_sol[i])
			{
				m_cg_motor_pos[i]++;
				m_en_pos[i]++;
			}
		}
	}

	refresh_motor_output();
}

TIMER_DEVICE_CALLBACK_MEMBER(cgang_state::door_motor_tick)
{
	if (m_door_motor_on & 2 && m_door_motor_pos < DOOR_MOTOR_LIMIT)
		m_door_motor_pos++;
	else if (m_door_motor_on & 1 && m_door_motor_pos > 0)
		m_door_motor_pos--;

	refresh_motor_output();
}

void cgang_state::refresh_motor_output()
{
	// output motor positions in range 0-100
	for (int i = 0; i < 5; i++)
	{
		m_cg_count[i] = int((m_cg_motor_pos[i] / float(CG_MOTOR_LIMIT)) * 100.0 + 0.5);
		m_en_count[i] = int((m_en_pos[i] / float(CG_MOTOR_LIMIT)) * 100.0 + 0.5);
	}

	m_door_count = (m_conf->read() & 1) ? int((m_door_motor_pos / float(DOOR_MOTOR_LIMIT)) * 100.0 + 0.5) : 0;
}


// maincpu (PPI1-PPI4)

u8 cgang_state::ppi1_b_r()
{
	u8 data = 0xff;

	// PB0-PB4: cabinet front limit (CR1INI-CR5INI)
	for (int i = 0; i < 5; i++)
		if (m_en_pos[i] == CG_MOTOR_LIMIT)
			data ^= 1 << i;

	// PB5-PB7: cabinet back limit (HST1-HST3)
	for (int i = 0; i < 3; i++)
		if (m_cg_motor_pos[i] == 0)
			data ^= 1 << (i + 5);

	return data;
}

u8 cgang_state::ppi1_c_r()
{
	u8 data = 0x7f;

	// PC0-PC1: cabinet back limit (HST4-HST5)
	for (int i = 0; i < 2; i++)
		if (m_cg_motor_pos[i + 3] == 0)
			data ^= 1 << i;

	// PC2-PC6: cosmogang-energy crate collision (CR1-CR5)
	for (int i = 0; i < 5; i++)
		if (m_cg_motor_pos[i] == m_en_pos[i])
			data ^= 1 << (i + 2);

	// PC7: audiocpu mailbox status
	data |= m_latch[1]->pending_r() ? 0 : 0x80;

	return data;
}

u8 cgang_state::ppi2_a_r()
{
	u8 data = 0x60;

	// PA0-PA4: cosmogang hit lightsensors (G1HIT-G5HIT)
	for (int i = 0; i < 2; i++)
	{
		u8 mask = m_gun_lamps[i] ? 0x1f : 0;
		data |= m_fake[i]->read() & mask;
	}

	// lightsensors masked with SW3
	data |= ~m_dipsw[2]->read() & 0x1f;

	// PA5: door down limit switch
	// PA6: door up limit switch
	if (m_door_motor_pos == 0)
		data ^= 0x20;
	else if (m_door_motor_pos == DOOR_MOTOR_LIMIT)
		data ^= 0x40;

	// force door limit switches low to disable
	if (~m_conf->read() & 1)
		data &= ~0x60;

	return data;
}

u8 cgang_state::ppi2_b_r()
{
	u8 data = 0x1f;

	// PB0-PB4: cabinet center (G1POG-G5POG)
	for (int i = 0; i < 5; i++)
		if (m_cg_motor_pos[i] < (CG_MOTOR_LIMIT / 8))
			data ^= 1 << i;

	return data;
}

void cgang_state::ppi2_c_w(u8 data)
{
	// PC0: coincounter
	// PC1: coinlock solenoid
	machine().bookkeeping().coin_counter_w(0, BIT(data, 0));
	machine().bookkeeping().coin_lockout_w(0, BIT(~data, 1));

	// PC2: start button lamp (easy)
	// PC3: start button lamp (hard)
	m_misc_lamps[0] = BIT(data, 2);
	m_misc_lamps[1] = BIT(data, 3);
}

void cgang_state::ppi3_a_w(u8 data)
{
	// PA0-PA4: cosmogang motor direction
	m_cg_motor_dir = data & 0x1f;

	// PA5,PA6: ufo left/right lamps
	for (int i = 0; i < 2; i++)
		m_misc_lamps[i + 6] = BIT(data, i + 5);
}

void cgang_state::ppi3_b_w(u8 data)
{
	// PB0-PB4: cosmogang motor power
	m_cg_motor_on = data & 0x1f;

	// PB5: game over(winning) lamp
	// PB6: 1P lamp
	// PB7: 2P lamp
	for (int i = 0; i < 3; i++)
		m_misc_lamps[i + 8] = BIT(data, i + 5);
}

void cgang_state::ppi3_c_w(u8 data)
{
	// PC0-PC3: 7448
	// PC4-PC7: 7445
	static const u8 ls48_map[0x10] =
		{ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7c,0x07,0x7f,0x67,0x58,0x4c,0x62,0x69,0x78,0x00 };

	m_digits->matrix((1 << (data >> 4 & 0xf)) & 0x3ff, ls48_map[data & 0xf]);
}

void cgang_state::set_en_sol(int i, int state)
{
	// put a filter on energy crate solenoids, since game keeps strobing them
	if (state != (m_sol_filter[i]->param() & 1))
		m_sol_filter[i]->adjust(attotime::from_msec(1), i << 1 | state);
}

void cgang_state::ppi4_a_w(u8 data)
{
	// PA2-PA4: round leds
	for (int i = 0; i < 3; i++)
		m_misc_lamps[i + 2] = BIT(data, i + 2);

	// PA5-PA7: energy crate solenoids (1-3)
	for (int i = 0; i < 3; i++)
		set_en_sol(i, BIT(data, i + 5));
}

void cgang_state::ppi4_b_w(u8 data)
{
	// PB0,PB1: energy crate solenoids (4-5)
	for (int i = 0; i < 2; i++)
		set_en_sol(i + 3, BIT(data, i));

	// PB2-PB6: cosmogang solenoids
	for (int i = 0; i < 5; i++)
		m_cg_sol[i] = BIT(data, i + 2);

	// PB7: target lamp
	m_misc_lamps[5] = BIT(data, 7);
}

void cgang_state::ppi4_c_w(u8 data)
{
	// PC0,PC1: gun xenon lamps
	for (int i = 0; i < 2; i++)
		m_gun_lamps[i] = BIT(~data, i);

	// PC4: ticket motor
	m_ticket->motor_w(BIT(data, 4));

	// PC5: door motor reverse
	// PC6: door motor
	m_door_motor_on = data >> 5 & 3;

	// PC7: watchdog P-RUN
	int wd = BIT(data, 7);
	if (wd && !m_watchdog_clk)
		m_watchdog->reset_w();

	m_watchdog_clk = wd;
}


// audiocpu

template<int N>
void cgang_state::adpcm_w(u8 data)
{
	m_adpcm[N]->port_w(data);

	// also strobes start
	m_adpcm[N]->start_w(0);
	m_adpcm[N]->start_w(1);
}

void cgang_state::spot_w(u8 data)
{
	// d0-d2: ufo boss spotlights
	// d3-d7: cosmo spotlights
	// it strobes them for dimming
	m_spot->matrix(1, data);
}

void cgang_state::ppi5_a_w(u8 data)
{
	// PA0,PA1: ADPCM reset
	m_adpcm[0]->reset_w(BIT(data, 0));
	m_adpcm[1]->reset_w(BIT(data, 1));

	// PA2: music volume
	// PA3: voice volume
	// PA4: mute
	bool mute = BIT(~data, 4);
	m_ymsnd->set_output_gain(ALL_OUTPUTS, mute ? 0.0 : (BIT(data, 2) ? 0.25 : 1.0));
	m_adpcm[0]->set_output_gain(ALL_OUTPUTS, mute ? 0.0 : (BIT(data, 3) ? 0.25 : 1.0));
	m_adpcm[1]->set_output_gain(ALL_OUTPUTS, mute ? 0.0 : (BIT(data, 3) ? 0.25 : 1.0));

	// PA7: ufo boss mouth solenoid
	m_ufo_sol = BIT(data, 7);
}

void cgang_state::ppi5_b_w(u8 data)
{
	// PB0-PB7: ufo lamps
	for (int i = 0; i < 8; i++)
		m_ufo_lamps[i] = BIT(data, i);
}

u8 cgang_state::ppi5_c_r()
{
	u8 data = 0;

	// PC0,PC1: ADPCM busy
	data |= m_adpcm[0]->busy_r() ? 1 : 0;
	data |= m_adpcm[1]->busy_r() ? 2 : 0;

	// PC2: maincpu mailbox status
	data |= m_latch[0]->pending_r() ? 0 : 4;

	// PC5-PC7: SW1
	data |= m_dipsw[0]->read() << 5;

	return data;
}



/******************************************************************************
    Address Maps
******************************************************************************/

void cgang_state::main_map(address_map &map)
{
	map(0x0000, 0x1fff).ram();
	map(0x2000, 0x2003).rw(m_ppi[0], FUNC(i8255_device::read), FUNC(i8255_device::write));
	map(0x2004, 0x2007).rw(m_ppi[1], FUNC(i8255_device::read), FUNC(i8255_device::write));
	map(0x2008, 0x200b).rw(m_ppi[2], FUNC(i8255_device::read), FUNC(i8255_device::write));
	map(0x200c, 0x200f).rw(m_ppi[3], FUNC(i8255_device::read), FUNC(i8255_device::write));
	map(0x4000, 0x4000).mirror(0x0003).w(m_latch[0], FUNC(generic_latch_8_device::write));
	map(0x4004, 0x4004).mirror(0x0003).r(m_latch[1], FUNC(generic_latch_8_device::read));
	map(0x4008, 0x4008).mirror(0x0003).w(FUNC(cgang_state::main_irq_clear_w));
	map(0x400c, 0x400c).mirror(0x0003).w(FUNC(cgang_state::main_firq_clear_w));
	map(0x4010, 0x4013).rw(m_pit[0], FUNC(pit8253_device::read), FUNC(pit8253_device::write));
	map(0x4014, 0x4017).rw(m_pit[1], FUNC(pit8253_device::read), FUNC(pit8253_device::write));
	map(0x4018, 0x4018).mirror(0x0003).portr("SW2");
	map(0x8000, 0xffff).rom();
}

void cgang_state::sound_map(address_map &map)
{
	map(0x0000, 0x0fff).ram();
	map(0x1000, 0x1001).rw(m_ymsnd, FUNC(ym2151_device::status_r), FUNC(ym2151_device::write));
	map(0x2000, 0x2003).mirror(0x0ffc).rw(m_ppi[4], FUNC(i8255_device::read), FUNC(i8255_device::write));
	map(0x3000, 0x3000).mirror(0x0fff).r(m_latch[0], FUNC(generic_latch_8_device::read));
	map(0x4000, 0x4000).mirror(0x0fff).w(m_latch[1], FUNC(generic_latch_8_device::write));
	map(0x5000, 0x5000).mirror(0x0fff).w(FUNC(cgang_state::adpcm_w<0>));
	map(0x6000, 0x6000).mirror(0x0fff).w(FUNC(cgang_state::adpcm_w<1>));
	map(0x7000, 0x7000).mirror(0x0fff).w(FUNC(cgang_state::spot_w)).nopr();
	map(0x8000, 0xffff).rom();
}



/******************************************************************************
    Input Ports
******************************************************************************/

static INPUT_PORTS_START( cgang )
	PORT_START("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SERVICE )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START2 ) PORT_NAME("Start (Hard)")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START1 ) PORT_NAME("Start (Easy)")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE2 ) PORT_NAME("Dispenser")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)

	PORT_START("FAKE1") // fake inputs, indicating gun is aimed at target
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P1 Aim Target 1")
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P1 Aim Target 2")
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P1 Aim Target 3")
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P1 Aim Target 4")
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P1 Aim Target 5")

	PORT_START("FAKE2") // "
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P2 Aim Target 1")
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P2 Aim Target 2")
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P2 Aim Target 3")
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P2 Aim Target 4")
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_OTHER ) PORT_NAME("P2 Aim Target 5")

	PORT_START("CONF1") // motorized sliding door in front of ufo entrance
	PORT_CONFNAME( 0x01, 0x01, "Sliding Door System")
	PORT_CONFSETTING(    0x00, DEF_STR( Off ) )
	PORT_CONFSETTING(    0x01, DEF_STR( On ) )

	PORT_START("SW1")
	PORT_DIPUNKNOWN_DIPLOC( 0x01, 0x01, "SW1:1" )
	PORT_DIPUNKNOWN_DIPLOC( 0x02, 0x02, "SW1:2" )
	PORT_DIPUNKNOWN_DIPLOC( 0x04, 0x04, "SW1:3" )

	PORT_START("SW2")
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW2:1,2")
	PORT_DIPSETTING(    0x00, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0x04, 0x04, "Attract Play" ) PORT_DIPLOCATION("SW2:3")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPNAME( 0x18, 0x18, "Points per Ticket" ) PORT_DIPLOCATION("SW2:4,5") PORT_CONDITION("SW2", 0x20, EQUALS, 0x20)
	PORT_DIPSETTING(    0x18, "5" )
	PORT_DIPSETTING(    0x10, "10" )
	PORT_DIPSETTING(    0x08, "15" )
	PORT_DIPSETTING(    0x00, "20" )
	PORT_DIPNAME( 0x18, 0x18, "Points per Prize" ) PORT_DIPLOCATION("SW2:4,5") PORT_CONDITION("SW2", 0x20, EQUALS, 0x00)
	PORT_DIPSETTING(    0x18, "20" )
	PORT_DIPSETTING(    0x10, "40" )
	PORT_DIPSETTING(    0x08, "60" )
	PORT_DIPSETTING(    0x00, "80" )
	PORT_DIPNAME( 0x20, 0x20, "Dispenser Mode" ) PORT_DIPLOCATION("SW2:6")
	PORT_DIPSETTING(    0x20, "Ticket" )
	PORT_DIPSETTING(    0x00, "Prize" )
	PORT_DIPUNUSED_DIPLOC( 0x40, 0x40, "SW2:7" )
	PORT_DIPUNUSED_DIPLOC( 0x80, 0x80, "SW2:8" )

	PORT_START("SW3") // disables one of the lanes in case of hardware malfunction
	PORT_DIPNAME( 0x01, 0x01, "Drive System 1" ) PORT_DIPLOCATION("SW3:1")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x01, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, "Drive System 2" ) PORT_DIPLOCATION("SW3:2")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x02, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, "Drive System 3" ) PORT_DIPLOCATION("SW3:3")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, "Drive System 4" ) PORT_DIPLOCATION("SW3:4")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, "Drive System 5" ) PORT_DIPLOCATION("SW3:5")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x10, DEF_STR( On ) )
	PORT_DIPUNUSED_DIPLOC( 0x20, 0x20, "SW3:6" )

	PORT_START("SW4")
	PORT_DIPNAME( 0x03, 0x02, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW4:1,2")
	PORT_DIPSETTING(    0x03, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Medium ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Free_Play ) ) PORT_DIPLOCATION("SW4:3")
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, "Dispenser Enabled" ) PORT_DIPLOCATION("SW4:4")
	PORT_DIPSETTING(    0x08, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
INPUT_PORTS_END



/******************************************************************************
    Machine Configs
******************************************************************************/

void cgang_state::cgang(machine_config &config)
{
	/* basic machine hardware */
	MC6809(config, m_maincpu, 4_MHz_XTAL);
	m_maincpu->set_addrmap(AS_PROGRAM, &cgang_state::main_map);

	MC6809E(config, m_audiocpu, 8_MHz_XTAL/4);
	m_audiocpu->set_addrmap(AS_PROGRAM, &cgang_state::sound_map);
	m_audiocpu->set_periodic_int(FUNC(cgang_state::nmi_line_pulse), attotime::from_hz(8_MHz_XTAL/4 / 0x1000));

	PIT8253(config, m_pit[0], 0);
	m_pit[0]->set_clk<0>(4_MHz_XTAL/4);
	m_pit[0]->set_clk<1>(4_MHz_XTAL/4);
	m_pit[0]->set_clk<2>(4_MHz_XTAL/4);
	m_pit[0]->out_handler<0>().set(FUNC(cgang_state::motor_clock_w<0>));
	m_pit[0]->out_handler<1>().set(FUNC(cgang_state::motor_clock_w<1>));
	m_pit[0]->out_handler<2>().set(FUNC(cgang_state::motor_clock_w<2>));

	PIT8253(config, m_pit[1], 0);
	m_pit[1]->set_clk<0>(4_MHz_XTAL/4);
	m_pit[1]->set_clk<1>(4_MHz_XTAL/4);
	m_pit[1]->set_clk<2>(4_MHz_XTAL/4);
	m_pit[1]->out_handler<0>().set(FUNC(cgang_state::motor_clock_w<3>));
	m_pit[1]->out_handler<1>().set(FUNC(cgang_state::motor_clock_w<4>));
	m_pit[1]->out_handler<2>().set("int_clk", FUNC(ripple_counter_device::clock_w));

	ripple_counter_device &int_clk(RIPPLE_COUNTER(config, "int_clk")); // 4040
	int_clk.set_stages(12);
	int_clk.count_out_cb().set_inputline(m_maincpu, INPUT_LINE_NMI).bit(0);
	int_clk.count_out_cb().append(FUNC(cgang_state::main_irq_w)).bit(3);
	int_clk.count_out_cb().append(FUNC(cgang_state::main_firq_w)).bit(4);

	GENERIC_LATCH_8(config, m_latch[0]);
	GENERIC_LATCH_8(config, m_latch[1]);

	I8255(config, m_ppi[0]); // 0x9b: all = input
	m_ppi[0]->in_pa_callback().set_ioport("IN1");
	m_ppi[0]->in_pb_callback().set(FUNC(cgang_state::ppi1_b_r));
	m_ppi[0]->in_pc_callback().set(FUNC(cgang_state::ppi1_c_r));

	I8255(config, m_ppi[1]); // 0x9a: A & B = input, Clow = output, Chigh = input
	m_ppi[1]->in_pa_callback().set(FUNC(cgang_state::ppi2_a_r));
	m_ppi[1]->in_pb_callback().set(FUNC(cgang_state::ppi2_b_r));
	m_ppi[1]->in_pc_callback().set_ioport("SW4").lshift(4);
	m_ppi[1]->out_pc_callback().set(FUNC(cgang_state::ppi2_c_w));

	I8255(config, m_ppi[2]); // 0x80: all = output
	m_ppi[2]->out_pa_callback().set(FUNC(cgang_state::ppi3_a_w));
	m_ppi[2]->out_pb_callback().set(FUNC(cgang_state::ppi3_b_w));
	m_ppi[2]->out_pc_callback().set(FUNC(cgang_state::ppi3_c_w));

	I8255(config, m_ppi[3]); // 0x80: all = output
	m_ppi[3]->out_pa_callback().set(FUNC(cgang_state::ppi4_a_w));
	m_ppi[3]->out_pb_callback().set(FUNC(cgang_state::ppi4_b_w));
	m_ppi[3]->out_pc_callback().set(FUNC(cgang_state::ppi4_c_w));

	I8255(config, m_ppi[4]); // 0x89: A & B = output, C = input
	m_ppi[4]->out_pa_callback().set(FUNC(cgang_state::ppi5_a_w));
	m_ppi[4]->out_pb_callback().set(FUNC(cgang_state::ppi5_b_w));
	m_ppi[4]->in_pc_callback().set(FUNC(cgang_state::ppi5_c_r));

	for (int i = 0; i < 5; i++)
	{
		m_ppi[i]->tri_pa_callback().set_constant(0);
		m_ppi[i]->tri_pb_callback().set_constant(0);
		m_ppi[i]->tri_pc_callback().set_constant(0);
	}

	WATCHDOG_TIMER(config, m_watchdog); // HA1835P
	m_watchdog->set_time(attotime::from_msec(100)); // approximation

	TICKET_DISPENSER(config, m_ticket, attotime::from_msec(3000), TICKET_MOTOR_ACTIVE_HIGH, TICKET_STATUS_ACTIVE_HIGH);

	TIMER(config, "door_motor").configure_periodic(FUNC(cgang_state::door_motor_tick), attotime::from_msec(1));

	/* video hardware */
	PWM_DISPLAY(config, m_digits).set_size(10, 7);
	m_digits->set_segmask(0x3ff, 0x7f);

	PWM_DISPLAY(config, m_spot).set_size(1, 8);
	m_spot->output_x().set(FUNC(cgang_state::output_spot_w));
	m_spot->set_bri_levels(0.0576, 0.144, 0.36, 0.9); // dimmed lights

	config.set_default_layout(layout_cgang);

	/* sound hardware */
	SPEAKER(config, "mono").front_center();

	YM2151(config, m_ymsnd, 3.579545_MHz_XTAL);
	m_ymsnd->add_route(ALL_OUTPUTS, "mono", 0.50);

	UPD7759(config, m_adpcm[0], 640_kHz_XTAL);
	m_adpcm[0]->add_route(ALL_OUTPUTS, "mono", 0.75);
	UPD7759(config, m_adpcm[1], 640_kHz_XTAL);
	m_adpcm[1]->add_route(ALL_OUTPUTS, "mono", 0.75);
}



/******************************************************************************
    ROM Definitions
******************************************************************************/

ROM_START( cgang )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD("cg1_mp0d.4j", 0x8000, 0x8000, CRC(2114cb55) SHA1(4e330cb3d8d96ec06faa25cbaeed97b1c2eff8db) )

	ROM_REGION( 0x10000, "audiocpu", 0 )
	ROM_LOAD("cg1_sp0b.4b", 0x8000, 0x8000, CRC(62974140) SHA1(5eee3f6345521e3fb76acb3acaa5c9df75db91db) )

	ROM_REGION( 0x20000, "adpcm0", 0 )
	ROM_LOAD("cg2_9c_e02a.9c", 0x00000, 0x20000, CRC(f9a3f8a0) SHA1(5ad8b408d36397227019afd15c3516f85488c6df) ) // handwritten label seen on one PCB

	ROM_REGION( 0x20000, "adpcm1", 0 )
	ROM_LOAD("cg2_9e_586e.9e", 0x00000, 0x20000, CRC(40e7f60b) SHA1(af641b0562db1ae033cee67df583d178fd8c93f3) ) // handwritten label seen on one PCB
ROM_END

} // anonymous namespace



/******************************************************************************
    Drivers
******************************************************************************/

/*    YEAR  NAME   PARENT  MACHINE  INPUT  CLASS        INIT        MONITOR  COMPANY, FULLNAME, FLAGS */
GAME( 1990, cgang, 0,      cgang,   cgang, cgang_state, empty_init, ROT0,    "Namco (Data East license)", "Cosmo Gang (US)", MACHINE_SUPPORTS_SAVE | MACHINE_MECHANICAL | MACHINE_CLICKABLE_ARTWORK | MACHINE_IMPERFECT_CONTROLS )