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

        Poly-88 driver by Miodrag Milanovic

        18/05/2009 Initial implementation

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

#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "imagedev/cassette.h"
#include "sound/wave.h"
#include "includes/poly88.h"

static ADDRESS_MAP_START(poly88_mem, AS_PROGRAM, 8, poly88_state )
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x0000, 0x03ff) AM_ROM // Monitor ROM
	AM_RANGE(0x0400, 0x0bff) AM_ROM // ROM Expansion
	AM_RANGE(0x0c00, 0x0dff) AM_RAM AM_MIRROR(0x200) // System RAM (mirrored)
	AM_RANGE(0x1000, 0x1fff) AM_ROM // System Expansion area
	AM_RANGE(0x2000, 0x3fff) AM_RAM // Minimal user RAM area
	AM_RANGE(0x4000, 0xf7ff) AM_RAM
	AM_RANGE(0xf800, 0xfbff) AM_RAM AM_SHARE("video_ram") // Video RAM
ADDRESS_MAP_END

static ADDRESS_MAP_START( poly88_io, AS_IO, 8, poly88_state )
	ADDRESS_MAP_UNMAP_HIGH
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x00, 0x00) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
	AM_RANGE(0x01, 0x01) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
	AM_RANGE(0x04, 0x04) AM_WRITE(poly88_baud_rate_w)
	AM_RANGE(0x08, 0x08) AM_WRITE(poly88_intr_w)
	AM_RANGE(0xf8, 0xf8) AM_READ(poly88_keyboard_r)
ADDRESS_MAP_END

static ADDRESS_MAP_START(poly8813_mem, AS_PROGRAM, 8, poly88_state )
	ADDRESS_MAP_UNMAP_HIGH
	AM_RANGE(0x0000, 0x03ff) AM_ROM // Monitor ROM
	AM_RANGE(0x0400, 0x0bff) AM_ROM // Disk System ROM
	AM_RANGE(0x0c00, 0x0fff) AM_RAM // System RAM
	AM_RANGE(0x1800, 0x1bff) AM_RAM AM_SHARE("video_ram") // Video RAM
	AM_RANGE(0x2000, 0xffff) AM_RAM // RAM
ADDRESS_MAP_END

static ADDRESS_MAP_START( poly8813_io, AS_IO, 8, poly88_state )
	ADDRESS_MAP_UNMAP_HIGH
	ADDRESS_MAP_GLOBAL_MASK(0xff)
ADDRESS_MAP_END

/* Input ports */
static INPUT_PORTS_START( poly88 )
	PORT_START("LINEC")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL)
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT)
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_UNUSED)
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_UNUSED)
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED)
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_UNUSED)
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_UNUSED)

	PORT_START("LINE0")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0)
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1)
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2)
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3)
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4)
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5)
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6)
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7)

	PORT_START("LINE1")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8)
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9)
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(":") PORT_CODE(KEYCODE_QUOTE)
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(";") PORT_CODE(KEYCODE_COLON)
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(",") PORT_CODE(KEYCODE_COMMA)
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("-") PORT_CODE(KEYCODE_MINUS)
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(".") PORT_CODE(KEYCODE_STOP)
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("/") PORT_CODE(KEYCODE_SLASH)

	PORT_START("LINE2")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("@") PORT_CODE(KEYCODE_END)
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A)
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B)
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C)
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D)
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E)
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F)
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G)

	PORT_START("LINE3")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H)
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I)
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J)
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K)
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L)
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M)
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N)
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O)

	PORT_START("LINE4")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P)
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q)
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R)
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S)
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T)
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U)
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V)
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W)

	PORT_START("LINE5")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X)
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y)
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z)
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("[") PORT_CODE(KEYCODE_OPENBRACE)
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("\\") PORT_CODE(KEYCODE_BACKSLASH)
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("]")  PORT_CODE(KEYCODE_CLOSEBRACE)
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("~")  PORT_CODE(KEYCODE_TILDE)
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("DEL")PORT_CODE(KEYCODE_BACKSPACE)

	PORT_START("LINE6")
	PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT)
	PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT)
	PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP)
	PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN)
	PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE)
	PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER)
	PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Tab") PORT_CODE(KEYCODE_TAB)
	PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("LF") PORT_CODE(KEYCODE_RALT)
INPUT_PORTS_END

static const struct CassetteOptions poly88_cassette_options =
{
	1,      /* channels */
	16,     /* bits per sample */
	7200    /* sample frequency */
};

static const cassette_interface poly88_cassette_interface =
{
	cassette_default_formats,
	&poly88_cassette_options,
	(cassette_state)(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED),
	NULL,
	NULL
};

/* F4 Character Displayer */
static const gfx_layout poly88_charlayout =
{
	8, 16,                  /* text = 7 x 9 */
	128,                    /* 128 characters */
	1,                  /* 1 bits per pixel */
	{ 0 },                  /* no bitplanes */
	/* x offsets */
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	/* y offsets */
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	8*16                    /* every char takes 16 bytes */
};

static GFXDECODE_START( poly88 )
	GFXDECODE_ENTRY( "chargen", 0x0000, poly88_charlayout, 0, 1 )
GFXDECODE_END

static MACHINE_CONFIG_START( poly88, poly88_state )
	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu",I8080, 1853000)
	MCFG_CPU_PROGRAM_MAP(poly88_mem)
	MCFG_CPU_IO_MAP(poly88_io)
	MCFG_CPU_VBLANK_INT_DRIVER("screen", poly88_state,  poly88_interrupt)


	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_REFRESH_RATE(60)
	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
	MCFG_SCREEN_SIZE(64*10, 16*15)
	MCFG_SCREEN_VISIBLE_AREA(0, 64*10-1, 0, 16*15-1)
	MCFG_SCREEN_UPDATE_DRIVER(poly88_state, screen_update_poly88)

	MCFG_GFXDECODE(poly88)
	MCFG_PALETTE_LENGTH(2)
	MCFG_PALETTE_INIT(black_and_white)


	/* audio hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")
	MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette")
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)

	/* cassette */
	MCFG_CASSETTE_ADD( "cassette", poly88_cassette_interface )

	/* uart */
	MCFG_I8251_ADD("uart", poly88_usart_interface)
	MCFG_SERIAL_SOURCE_ADD("sercas")

	/* snapshot */
	MCFG_SNAPSHOT_ADD("snapshot", poly88_state, poly88, "img", 0)
MACHINE_CONFIG_END

static MACHINE_CONFIG_DERIVED( poly8813, poly88 )
	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_PROGRAM_MAP(poly8813_mem)
	MCFG_CPU_IO_MAP(poly8813_io)
MACHINE_CONFIG_END

/* ROM definition */
ROM_START( poly88 )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_LOAD( "polymon4.bin", 0x0000, 0x0400, CRC(0baa1a4c) SHA1(c6cf4b89bdde200813d34aab08150d5f3025ce33))
	ROM_LOAD( "tbasic_1.rom", 0x0400, 0x0400, CRC(ec22740e) SHA1(bc606c58ef5f046200bdf402eda66ec070464306))
	ROM_LOAD( "tbasic_2.rom", 0x0800, 0x0400, CRC(f2619232) SHA1(eb6fb0356d2fb153111cfddf39eab10253cb4c53))

	ROM_REGION( 0x800, "chargen", 0 )
	ROM_LOAD( "6571.bin", 0x0000, 0x0800, CRC(5a25144b) SHA1(7b9fee0c8ef2605b85d12b6d9fe8feb82418c63a) )
ROM_END

ROM_START( poly8813 )
	ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
	ROM_LOAD( "poly8813-1.bin", 0x0000, 0x0400, CRC(7fd980a0) SHA1(a71d5999deb4323a11db1c0ea0dcb1dacfaf47ef))
	ROM_LOAD( "poly8813-2.rom", 0x0400, 0x0400, CRC(1ad7c06c) SHA1(c96b8f03c184de58dbdcee18d297dbccf2d77176))
	ROM_LOAD( "poly8813-3.rom", 0x0800, 0x0400, CRC(3df57e5b) SHA1(5b0c4febfc7515fc07e63dcb21d0ab32bc6a2e46))

	ROM_REGION( 0x800, "chargen", 0 )
	ROM_LOAD( "6571.bin", 0x0000, 0x0800, CRC(5a25144b) SHA1(7b9fee0c8ef2605b85d12b6d9fe8feb82418c63a) )
ROM_END
/* Driver */

/*    YEAR  NAME    PARENT  COMPAT   MACHINE    INPUT    INIT    COMPANY                   FULLNAME       FLAGS */
COMP( 1976, poly88,  0,     0,       poly88,    poly88, poly88_state,  poly88, "PolyMorphic Systems",   "Poly-88",   0)
COMP( 1977, poly8813,poly88,0,       poly8813,  poly88, poly88_state,  poly88, "PolyMorphic Systems",   "Poly-8813",GAME_NOT_WORKING)