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path: root/src/mame/drivers/pengadvb.cpp
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// license:BSD-3-Clause
// copyright-holders:Mariusz Wojcieszek, hap
/***************************************************************************

Penguin Adventure bootleg (tagged 'Screen', 1988)
Original release was on MSX, by Konami in 1986. There is no official arcade release of this game.

Driver by Mariusz Wojcieszek

This seems to be the MSX version hacked to run on cheap Korean(?) bootleg hardware.
Bosses are at wrong stages when compared to the original, probably to make the game more
difficult early on. This is also the cause of some gfx glitches when reaching a boss.

Basic components include.....
Z80 @ 3.579533MHz [10.7386/3]
TMS9128 @ 10.7386MHz
AY-3-8910 @ 1.789766MHz [10.7386/6]
8255
4416 RAM x2
4164 RAM x8
10.7386 XTAL
10 position DIPSW
NOTE! switches 1, 3 & 5 must be ON or the game will not boot.

TODO:
- A timer apparently expires when beating stage 4 (signalled by a long beeping sound).
  Player needs to insert another credit and press start button (?) in order to continue.
  Is this timer supposed to be shown on screen or there are additional 7-LEDs not handled?

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

#include "emu.h"
#include "cpu/z80/z80.h"
#include "video/tms9928a.h"
#include "sound/ay8910.h"
#include "machine/i8255.h"
#include "machine/bankdev.h"
#include "screen.h"
#include "speaker.h"


class pengadvb_state : public driver_device
{
public:
	pengadvb_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
		, m_page(*this, "page%u", 0U)
		, m_bank(*this, "bank%u", 0U)
	{ }

	void pengadvb(machine_config &config);

	void init_pengadvb();

private:
	DECLARE_READ8_MEMBER(mem_r);
	DECLARE_WRITE8_MEMBER(mem_w);
	DECLARE_WRITE8_MEMBER(megarom_bank_w);

	DECLARE_WRITE8_MEMBER(pengadvb_psg_port_b_w);
	DECLARE_READ8_MEMBER(pengadvb_ppi_port_a_r);
	DECLARE_WRITE8_MEMBER(pengadvb_ppi_port_a_w);
	DECLARE_READ8_MEMBER(pengadvb_ppi_port_b_r);
	DECLARE_WRITE8_MEMBER(pengadvb_ppi_port_c_w);

	virtual void machine_start() override;
	virtual void machine_reset() override;
	void pengadvb_decrypt(const char* region);
	void bank_mem(address_map &map);
	void io_mem(address_map &map);
	void program_mem(address_map &map);

	required_device<cpu_device> m_maincpu;
	required_device_array<address_map_bank_device, 4> m_page;
	required_memory_bank_array<4> m_bank;

	uint8_t m_primary_slot_reg;
	uint8_t m_kb_matrix_row;
};


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

  Z80 Memory map

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

READ8_MEMBER(pengadvb_state::mem_r)
{
	return m_page[offset >> 14 & 3]->read8(space, offset);
}

WRITE8_MEMBER(pengadvb_state::mem_w)
{
	m_page[offset >> 14 & 3]->write8(space, offset, data);
}

WRITE8_MEMBER(pengadvb_state::megarom_bank_w)
{
	m_bank[offset >> 13 & 3]->set_entry(data & 0xf);
}

void pengadvb_state::program_mem(address_map &map)
{
	map(0x0000, 0xffff).rw(FUNC(pengadvb_state::mem_r), FUNC(pengadvb_state::mem_w)); // 4 pages of 16KB
}

void pengadvb_state::bank_mem(address_map &map)
{
	// slot 0, MSX BIOS
	map(0x00000, 0x07fff).rom().region("maincpu", 0);

	// slot 1, MegaROM
	map(0x14000, 0x15fff).bankr("bank0");
	map(0x16000, 0x17fff).bankr("bank1");
	map(0x18000, 0x19fff).bankr("bank2");
	map(0x1a000, 0x1bfff).bankr("bank3");
	map(0x14000, 0x1bfff).w(FUNC(pengadvb_state::megarom_bank_w));

	// slot 3, 16KB RAM
	map(0x3c000, 0x3ffff).ram();
}

void pengadvb_state::io_mem(address_map &map)
{
	map.unmap_value_high();
	map.global_mask(0xff);
	map(0x98, 0x98).rw("tms9128", FUNC(tms9128_device::vram_r), FUNC(tms9128_device::vram_w));
	map(0x99, 0x99).rw("tms9128", FUNC(tms9128_device::register_r), FUNC(tms9128_device::register_w));
	map(0xa0, 0xa1).w("aysnd", FUNC(ay8910_device::address_data_w));
	map(0xa2, 0xa2).r("aysnd", FUNC(ay8910_device::data_r));
	map(0xa8, 0xab).rw("ppi8255", FUNC(i8255_device::read), FUNC(i8255_device::write));
}


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

  Inputs

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

static INPUT_PORTS_START( pengadvb )
	PORT_START("IN0")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT )
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
	PORT_BIT(0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("IN1")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_IMPULSE(1)
	// bit 1 is also tested, unknown purpose.
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT(0xee, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END


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

  IC Interfaces

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

// AY8910
WRITE8_MEMBER(pengadvb_state::pengadvb_psg_port_b_w)
{
	// leftover from msx ver?
}

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

// I8255
READ8_MEMBER(pengadvb_state::pengadvb_ppi_port_a_r)
{
	return m_primary_slot_reg;
}

WRITE8_MEMBER(pengadvb_state::pengadvb_ppi_port_a_w)
{
	if (data != m_primary_slot_reg)
	{
		for (int i = 0; i < 4; i++)
			m_page[i]->set_bank(data >> (i * 2) & 3);

		m_primary_slot_reg = data;
	}
}

READ8_MEMBER(pengadvb_state::pengadvb_ppi_port_b_r)
{
	// TODO: dipswitch
	switch (m_kb_matrix_row)
	{
		case 0x0:
			return ioport("IN1")->read();

		default:
			break;
	}

	return 0xff;
}

WRITE8_MEMBER(pengadvb_state::pengadvb_ppi_port_c_w)
{
	m_kb_matrix_row = data & 0x0f;
}

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

  Machine config(s)

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

void pengadvb_state::pengadvb(machine_config &config)
{   /* basic machine hardware */
	Z80(config, m_maincpu, XTAL(10'738'635)/3);
	m_maincpu->set_addrmap(AS_PROGRAM, &pengadvb_state::program_mem);
	m_maincpu->set_addrmap(AS_IO, &pengadvb_state::io_mem);

	ADDRESS_MAP_BANK(config, "page0").set_map(&pengadvb_state::bank_mem).set_options(ENDIANNESS_LITTLE, 8, 18, 0x10000);
	ADDRESS_MAP_BANK(config, "page1").set_map(&pengadvb_state::bank_mem).set_options(ENDIANNESS_LITTLE, 8, 18, 0x10000);
	ADDRESS_MAP_BANK(config, "page2").set_map(&pengadvb_state::bank_mem).set_options(ENDIANNESS_LITTLE, 8, 18, 0x10000);
	ADDRESS_MAP_BANK(config, "page3").set_map(&pengadvb_state::bank_mem).set_options(ENDIANNESS_LITTLE, 8, 18, 0x10000);

	i8255_device &ppi(I8255(config, "ppi8255"));
	ppi.in_pa_callback().set(FUNC(pengadvb_state::pengadvb_ppi_port_a_r));
	ppi.out_pa_callback().set(FUNC(pengadvb_state::pengadvb_ppi_port_a_w));
	ppi.in_pb_callback().set(FUNC(pengadvb_state::pengadvb_ppi_port_b_r));
	ppi.out_pc_callback().set(FUNC(pengadvb_state::pengadvb_ppi_port_c_w));

	/* video hardware */
	tms9128_device &vdp(TMS9128(config, "tms9128", XTAL(10'738'635)));
	vdp.set_screen("screen");
	vdp.set_vram_size(0x4000);
	vdp.int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
	SCREEN(config, "screen", SCREEN_TYPE_RASTER);

	/* sound hardware */
	SPEAKER(config, "mono").front_center();
	ay8910_device &aysnd(AY8910(config, "aysnd", XTAL(10'738'635)/6));
	aysnd.port_a_read_callback().set_ioport("IN0");
	aysnd.port_b_write_callback().set(FUNC(pengadvb_state::pengadvb_psg_port_b_w));
	aysnd.add_route(ALL_OUTPUTS, "mono", 0.50);
}


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

  Machine start/init

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

void pengadvb_state::machine_start()
{
	save_item(NAME(m_primary_slot_reg));
	save_item(NAME(m_kb_matrix_row));
}

void pengadvb_state::machine_reset()
{
	m_primary_slot_reg = 0;
	m_kb_matrix_row = 0;

	for (int i = 0; i < 4; i++)
	{
		m_page[i]->set_bank(0);
		m_bank[i]->set_entry(i);
	}
}

void pengadvb_state::pengadvb_decrypt(const char* region)
{
	uint8_t *mem = memregion(region)->base();
	uint32_t memsize = memregion(region)->bytes();

	// data lines swap
	for (int i = 0; i < memsize; i++)
		mem[i] = bitswap<8>(mem[i],7,6,5,3,4,2,1,0);

	// address line swap
	std::vector<uint8_t> buf(memsize);
	memcpy(&buf[0], mem, memsize);
	for (int i = 0; i < memsize; i++)
		mem[i] = buf[bitswap<24>(i,23,22,21,20,19,18,17,16,15,14,13,5,11,10,9,8,7,6,12,4,3,2,1,0)];
}

void pengadvb_state::init_pengadvb()
{
	pengadvb_decrypt("maincpu");
	pengadvb_decrypt("game");

	// init banks
	for (int i = 0; i < 4; i++)
		m_bank[i]->configure_entries(0, 0x10, memregion("game")->base(), 0x2000);
}


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

  Game driver(s)

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

ROM_START( pengadvb )
	ROM_REGION( 0x8000, "maincpu", 0 )
	ROM_LOAD( "rom.u5", 0x00000, 0x8000, CRC(d21950d2) SHA1(0b1815677f17a680ba63c3839bea2d451813eec8) )

	ROM_REGION( 0x20000, "game", 0 )
	ROM_LOAD( "rom.u7",  0x00000, 0x8000, CRC(d4b4a4a4) SHA1(59f9299182fd8aedc7a4e9b0ddd685f2a71c033f) )
	ROM_LOAD( "rom.u8",  0x08000, 0x8000, CRC(eada2232) SHA1(f4182f0921b621acd8be6077eb9639b31a97e907) )
	ROM_LOAD( "rom.u9",  0x10000, 0x8000, CRC(6478c561) SHA1(6f9a794a5bb51e96552f6d1e9fa6515659d25933) )
	ROM_LOAD( "rom.u10", 0x18000, 0x8000, CRC(5c48360f) SHA1(0866e20969f57b7b7c59df8f7ca203f18c7c9870) )
ROM_END


GAME( 1988, pengadvb, 0, pengadvb, pengadvb, pengadvb_state, init_pengadvb, ROT0, "bootleg (Screen) / Konami", "Penguin Adventure (bootleg of MSX version)", MACHINE_SUPPORTS_SAVE )