// license:MAME
// copyright-holders:Robbbert
/***************************************************************************

    Hanimex Pencil II
    Manufactured by Soundic, Hong Kong.

    2012-11-06 [Robbbert]

    Computer kindly donated for MESS by Ian Farquhar.

Information found by looking inside the computer
------------------------------------------------
Main Board PEN-002 11-50332-10

J1 Expansion slot
J2 Cart slot
J3 Memory expansion slot
J4 Printer slot
J5,J6 Joystick ports

XTAL 10.738 MHz

Output is to a TV on Australian Channel 1.

U1     uPD780C-1 (Z80A)
U2     Video chip with heatsink stuck on top, TMS9929
U3     SN76489AN
U4     2764 bios rom
U5     uPD4016C-2 (assumed to be equivalent of 6116 2K x 8bit static RAM)
U6     74LS04
U7     74LS74A
U8-10  74LS138
U11    74LS00
U12    74LS273
U13    74LS74A
U14-21 TMM416P-3 (4116-3 16k x 1bit dynamic RAM)
U22    74LS05
U23-24 SN74LS541


SD-BASIC usage:
All commands must be in uppercase, which is the default at boot.
The 'capslock' is done by pressing Shift and Esc together, and the
cursor will change to a checkerboard pattern.


MEMORY MAP
0000-1FFF bios rom
2000-5FFF available for expansion
6000-7FFF static RAM (2K mirrored)
8000-FFFF cart slot

The 16k dynamic RAM holds the BASIC program and the video/gfx etc
but is banked out of view of a BASIC program.


ToDo:
- Cassette isn't working
- Joysticks (no info)

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

#include "emu.h"
#include "cpu/z80/z80.h"
#include "video/tms9928a.h"
#include "sound/sn76496.h"
#include "bus/centronics/ctronics.h"
#include "imagedev/cassette.h"
#include "sound/wave.h"
#include "bus/generic/slot.h"
#include "bus/generic/carts.h"


class pencil2_state : public driver_device
{
public:
	pencil2_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag)
		, m_maincpu(*this, "maincpu")
		, m_centronics(*this, "centronics")
		, m_cass(*this, "cassette")
		, m_cart(*this, "cartslot")
	{}

	DECLARE_WRITE8_MEMBER(port10_w);
	DECLARE_WRITE8_MEMBER(port30_w);
	DECLARE_WRITE8_MEMBER(port80_w);
	DECLARE_WRITE8_MEMBER(portc0_w);
	DECLARE_READ8_MEMBER(porte2_r);
	DECLARE_WRITE_LINE_MEMBER(write_centronics_ack);
	DECLARE_WRITE_LINE_MEMBER(write_centronics_busy);
	DECLARE_CUSTOM_INPUT_MEMBER(printer_ready_r);
	DECLARE_CUSTOM_INPUT_MEMBER(printer_ack_r);
private:
	virtual void machine_start();
	int m_centronics_busy;
	int m_centronics_ack;
	required_device<cpu_device> m_maincpu;
	required_device<centronics_device> m_centronics;
	required_device<cassette_image_device> m_cass;
	required_device<generic_slot_device> m_cart;
};

static ADDRESS_MAP_START(pencil2_mem, AS_PROGRAM, 8, pencil2_state)
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x0000, 0x1fff) AM_ROM
	AM_RANGE(0x2000, 0x5fff) AM_WRITENOP  // stop error log filling up
	AM_RANGE(0x6000, 0x67ff) AM_MIRROR(0x1800) AM_RAM
	//AM_RANGE(0x8000, 0xffff)      // mapped by the cartslot
ADDRESS_MAP_END

static ADDRESS_MAP_START(pencil2_io, AS_IO, 8, pencil2_state)
	ADDRESS_MAP_UNMAP_HIGH
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x00, 0x0f) AM_DEVWRITE("cent_data_out", output_latch_device, write)
	AM_RANGE(0x10, 0x1f) AM_WRITE(port10_w)
	AM_RANGE(0x30, 0x3f) AM_WRITE(port30_w)
	AM_RANGE(0x80, 0x9f) AM_WRITE(port80_w)
	AM_RANGE(0xa0, 0xa0) AM_MIRROR(0x1e) AM_DEVREADWRITE("tms9928a", tms9928a_device, vram_read, vram_write)
	AM_RANGE(0xa1, 0xa1) AM_MIRROR(0x1e) AM_DEVREADWRITE("tms9928a", tms9928a_device, register_read, register_write)
	AM_RANGE(0xc0, 0xdf) AM_WRITE(portc0_w)
	AM_RANGE(0xe0, 0xff) AM_DEVWRITE("sn76489a", sn76489a_device, write)
	AM_RANGE(0xe0, 0xe0) AM_READ_PORT("E0")
	AM_RANGE(0xe1, 0xe1) AM_READ_PORT("E1")
	AM_RANGE(0xe2, 0xe2) AM_READ(porte2_r)
	AM_RANGE(0xe3, 0xe3) AM_READ_PORT("E3")
	AM_RANGE(0xe4, 0xe4) AM_READ_PORT("E4")
	AM_RANGE(0xe6, 0xe6) AM_READ_PORT("E6")
	AM_RANGE(0xe8, 0xe8) AM_READ_PORT("E8")
	AM_RANGE(0xea, 0xea) AM_READ_PORT("EA")
	AM_RANGE(0xf0, 0xf0) AM_READ_PORT("F0")
	AM_RANGE(0xf2, 0xf2) AM_READ_PORT("F2")
ADDRESS_MAP_END

READ8_MEMBER( pencil2_state::porte2_r)
{
	return (m_cass->input() > 0.1);
}

WRITE8_MEMBER( pencil2_state::port10_w )
{
	m_centronics->write_strobe(BIT(data, 0));
}

WRITE8_MEMBER( pencil2_state::port30_w )
{
	m_cass->output( BIT(data, 0) ? -1.0 : +1.0);
}

WRITE8_MEMBER( pencil2_state::port80_w )
{
}

WRITE8_MEMBER( pencil2_state::portc0_w )
{
}

WRITE_LINE_MEMBER( pencil2_state::write_centronics_busy )
{
	m_centronics_busy = state;
}

CUSTOM_INPUT_MEMBER( pencil2_state::printer_ready_r )
{
	return m_centronics_busy;
}

WRITE_LINE_MEMBER( pencil2_state::write_centronics_ack )
{
	m_centronics_ack = state;
}

CUSTOM_INPUT_MEMBER( pencil2_state::printer_ack_r )
{
	return m_centronics_ack;
}


/* Input ports */
static INPUT_PORTS_START( pencil2 )
	PORT_START("E0")
	// port_custom MUST be ACTIVE_HIGH to work
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_UP)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RIGHT)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DOWN)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LEFT)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, pencil2_state, printer_ready_r, " ")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Break") PORT_CODE(KEYCODE_END)
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM_MEMBER(DEVICE_SELF, pencil2_state, printer_ack_r, " ")

	PORT_START("E1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j') PORT_CHAR('@')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('>')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('<')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("E3")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ESC) PORT_CHAR(27)
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(32)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("E4")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("E6")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR(39)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("E8")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(':') PORT_CHAR('*')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l') PORT_CHAR('/')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(';') PORT_CHAR('+')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k') PORT_CHAR('?')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("EA")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u')
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v')
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y')
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("F0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('^')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F2)
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F4)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("F2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F1)
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F6)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F3)
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F5)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END


void pencil2_state::machine_start()
{
	if (m_cart->exists())
		m_maincpu->space(AS_PROGRAM).install_read_handler(0x8000, 0xffff, read8_delegate(FUNC(generic_slot_device::read_rom),(generic_slot_device*)m_cart));
}

static MACHINE_CONFIG_START( pencil2, pencil2_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", Z80, XTAL_10_738635MHz/3)
	MCFG_CPU_PROGRAM_MAP(pencil2_mem)
	MCFG_CPU_IO_MAP(pencil2_io)

	/* video hardware */
	MCFG_DEVICE_ADD( "tms9928a", TMS9929A, XTAL_10_738635MHz / 2 )
	MCFG_TMS9928A_VRAM_SIZE(0x4000)
	MCFG_TMS9928A_SCREEN_ADD_PAL( "screen" )
	MCFG_SCREEN_UPDATE_DEVICE( "tms9928a", tms9928a_device, screen_update )

	// sound hardware
	MCFG_SPEAKER_STANDARD_MONO("mono")
	MCFG_SOUND_ADD("sn76489a", SN76489A, XTAL_10_738635MHz/3) // guess
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
	MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)

	/* cassette */
	MCFG_CASSETTE_ADD( "cassette" )

	/* cartridge */
	MCFG_GENERIC_CARTSLOT_ADD("cartslot", generic_plain_slot, "pencil2_cart")

	/* printer */
	MCFG_CENTRONICS_ADD("centronics", centronics_devices, "printer")
	MCFG_CENTRONICS_ACK_HANDLER(WRITELINE(pencil2_state, write_centronics_ack))
	MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(pencil2_state, write_centronics_busy))

	MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics")

	/* Software lists */
	MCFG_SOFTWARE_LIST_ADD("cart_list", "pencil2")
MACHINE_CONFIG_END

/* ROM definition */
ROM_START( pencil2 )
	ROM_REGION(0x10000, "maincpu", 0)
	ROM_LOAD( "mt.u4", 0x0000, 0x2000, CRC(338d7b59) SHA1(2f89985ac06971e00210ff992bf1e30a296d10e7) )
ROM_END

/* Driver */

/*    YEAR  NAME    PARENT  COMPAT   MACHINE    INPUT     STATE         INIT  COMPANY    FULLNAME       FLAGS */
COMP( 1983, pencil2,   0,     0,     pencil2,   pencil2, driver_device,  0,  "Hanimex", "Pencil II", GAME_NOT_WORKING )
