diff options
Diffstat (limited to 'src/mess/drivers/pc2000.c')
-rw-r--r-- | src/mess/drivers/pc2000.c | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/src/mess/drivers/pc2000.c b/src/mess/drivers/pc2000.c new file mode 100644 index 00000000000..556980acc63 --- /dev/null +++ b/src/mess/drivers/pc2000.c @@ -0,0 +1,372 @@ +/*************************************************************************** + + VTech PreComputer 2000 + + 04/12/2009 Skeleton driver. + + TODO: + - fix the keys label + - dump the chargen + - verify the cartridge interface (I don't have dump for test it) + - the HD44780 busy line is never checked, it's this correct?? + +****************************************************************************/ + + +#include "emu.h" +#include "cpu/z80/z80.h" +#include "video/hd44780.h" +#include "sound/beep.h" +#include "imagedev/cartslot.h" +#include "rendlay.h" + + +class pc2000_state : public driver_device +{ +public: + pc2000_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_lcdc(*this, "hd44780"), + m_beep(*this, BEEPER_TAG) + { } + + required_device<hd44780_device> m_lcdc; + required_device<device_t> m_beep; + + UINT8 m_mux_data; + UINT8 m_beep_state; + + virtual void machine_start(); + virtual void machine_reset(); + UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + + DECLARE_READ8_MEMBER( key_matrix_r ); + DECLARE_WRITE8_MEMBER( key_matrix_w ); + DECLARE_WRITE8_MEMBER( rombank1_w ); + DECLARE_WRITE8_MEMBER( rombank2_w ); + DECLARE_READ8_MEMBER( beep_r ); + DECLARE_WRITE8_MEMBER( beep_w ); +}; + + +/* TODO: put a breakpoint at 1625 and test the inputs, writes at dce4 are the scancode values */ +READ8_MEMBER( pc2000_state::key_matrix_r ) +{ + static const char *const bitnames[2][8] = + { + {"IN0", "IN1", "IN2", "IN3", "IN4", "IN5", "IN6", "IN7"}, + {"IN8", "IN9", "INA", "INB", "INC", "IND", "INE", "INF"} + }; + + UINT8 data = 0xff; + + for (int line=0; line<8; line++) + if (m_mux_data & (1<<line)) + data &= ioport(bitnames[offset][line])->read(); + + return data; +} + +WRITE8_MEMBER( pc2000_state::key_matrix_w ) +{ + m_mux_data = data; +} + +WRITE8_MEMBER( pc2000_state::rombank1_w ) +{ + membank("bank1")->set_entry(data & 0x0f); +} + +WRITE8_MEMBER( pc2000_state::rombank2_w ) +{ + if (data == 0x80) + { + membank("bank2")->set_entry(data & 0x10); //cartridge + } + else + { + membank("bank2")->set_entry(data & 0x0f); + } +} + +READ8_MEMBER( pc2000_state::beep_r ) +{ + return m_beep_state; +} + +WRITE8_MEMBER( pc2000_state::beep_w ) +{ + beep_set_state(m_beep, BIT(data, 3)); + m_beep_state = data; +} + +static ADDRESS_MAP_START(pc2000_mem, AS_PROGRAM, 8, pc2000_state) + ADDRESS_MAP_UNMAP_HIGH + AM_RANGE(0x0000, 0x3fff) AM_ROM AM_REGION("bios", 0x00000) + AM_RANGE(0x4000, 0x7fff) AM_ROMBANK("bank1") + AM_RANGE(0x8000, 0xbfff) AM_ROMBANK("bank2") //0x8000 - 0xbfff tests a cartridge, header is 0x55 0xaa 0x59 0x45, if it succeeds a jump at 0x8004 occurs + AM_RANGE(0xc000, 0xdfff) AM_RAM +ADDRESS_MAP_END + +static ADDRESS_MAP_START( pc2000_io , AS_IO, 8, pc2000_state) + ADDRESS_MAP_UNMAP_HIGH + ADDRESS_MAP_GLOBAL_MASK(0xff) + AM_RANGE(0x01, 0x01) AM_WRITE(rombank1_w) + AM_RANGE(0x03, 0x03) AM_WRITE(rombank2_w) + AM_RANGE(0x0a, 0x0a) AM_DEVREADWRITE("hd44780", hd44780_device, control_read, control_write) + AM_RANGE(0x0b, 0x0b) AM_DEVREADWRITE("hd44780", hd44780_device, data_read, data_write) + AM_RANGE(0x10, 0x11) AM_READWRITE(key_matrix_r, key_matrix_w) + AM_RANGE(0x12, 0x12) AM_READWRITE(beep_r, beep_w) +ADDRESS_MAP_END + +/* Input ports */ +static INPUT_PORTS_START( pc2000 ) + PORT_START("IN0") + PORT_DIPNAME( 0x01, 0x01, "IN0" ) //0x83 + PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x20, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + + PORT_START("IN1") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Caps Lock") PORT_CODE(KEYCODE_CAPSLOCK) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\\") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("IN2") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('S') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('X') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('W') + + PORT_START("IN3") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('T') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('G') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('V') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('R') + + PORT_START("IN4") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('U') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('H') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('J') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('N') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('M') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') + + PORT_START("IN5") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('O') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('K') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('L') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(",") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(".") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('I') + + PORT_START("IN6") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("HOME") PORT_CODE(KEYCODE_HOME) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("=") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(";") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\'") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("/") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('P') + + PORT_START("IN7") + PORT_BIT(0x03, IP_ACTIVE_LOW, IPT_UNUSED) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("LEFT") PORT_CODE(KEYCODE_LEFT) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("RIGHT") PORT_CODE(KEYCODE_RIGHT) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("DEL") PORT_CODE(KEYCODE_DEL) + PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("IN8") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Scramble") PORT_CODE(KEYCODE_F1) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Guess Rork") PORT_CODE(KEYCODE_F2) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Missing Letter") PORT_CODE(KEYCODE_F3) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Letter Hunt") PORT_CODE(KEYCODE_F4) + PORT_BIT(0xf0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("IN9") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Letter Zapper") PORT_CODE(KEYCODE_F5) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Letter Switch") PORT_CODE(KEYCODE_F6) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Sentence Jumble") PORT_CODE(KEYCODE_F7) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Grammar Challenge") PORT_CODE(KEYCODE_F8) + PORT_BIT(0xf0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("INA") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Plurals") PORT_CODE(KEYCODE_F9) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Past Tense") PORT_CODE(KEYCODE_F10) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Synonyms") PORT_CODE(KEYCODE_F11) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Antonyms") PORT_CODE(KEYCODE_F12) + PORT_BIT(0xf0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("INB") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Basic Math") PORT_CODE(KEYCODE_0_PAD) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Advanced Math") PORT_CODE(KEYCODE_1_PAD) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Math Riddles") PORT_CODE(KEYCODE_2_PAD) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Number Challenge") PORT_CODE(KEYCODE_3_PAD) + PORT_BIT(0xf0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("INC") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Ecology") PORT_CODE(KEYCODE_4_PAD) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("History") PORT_CODE(KEYCODE_5_PAD) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Geography") PORT_CODE(KEYCODE_6_PAD) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Super Power") PORT_CODE(KEYCODE_7_PAD) + PORT_BIT(0xf0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("IND") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Typing Game") PORT_CODE(KEYCODE_8_PAD) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Alpha Jumble") PORT_CODE(KEYCODE_9_PAD) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Word Flash") PORT_CODE(KEYCODE_PGUP) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Sign Search") PORT_CODE(KEYCODE_PGDN) + PORT_BIT(0xf0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("INE") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("PC2000 Basic") PORT_CODE(KEYCODE_OPENBRACE) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Spell Checker") PORT_CODE(KEYCODE_CLOSEBRACE) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Calculator") PORT_CODE(KEYCODE_RSHIFT) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Load Cartridge") PORT_CODE(KEYCODE_RCONTROL) + PORT_BIT(0xf0, IP_ACTIVE_LOW, IPT_UNUSED) + + PORT_START("INF") + PORT_DIPNAME( 0x01, 0x01, "INF" ) + PORT_DIPSETTING( 0x01, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) ) + PORT_DIPSETTING( 0x02, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(DEF_STR( Level_Select )) PORT_CODE(KEYCODE_LSHIFT) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Num Players") PORT_CODE(KEYCODE_LCONTROL) + PORT_BIT(0xf0, IP_ACTIVE_LOW, IPT_UNUSED) +INPUT_PORTS_END + + +void pc2000_state::machine_start() +{ + UINT8 *bios = memregion("bios")->base(); + UINT8 *cart = memregion("cart")->base(); + + membank("bank1")->configure_entries(0, 0x10, bios, 0x4000); + membank("bank2")->configure_entries(0, 0x10, bios, 0x4000); + membank("bank2")->configure_entry(0x10, cart); +} + +void pc2000_state::machine_reset() +{ + //set the initial bank + membank("bank1")->set_entry(0); + membank("bank2")->set_entry(0); +} + +static PALETTE_INIT( pc2000 ) +{ + palette_set_color(machine, 0, MAKE_RGB(138, 146, 148)); + palette_set_color(machine, 1, MAKE_RGB(92, 83, 88)); +} + +static const gfx_layout hd44780_charlayout = +{ + 5, 8, /* 5 x 8 characters */ + 256, /* 256 characters */ + 1, /* 1 bits per pixel */ + { 0 }, /* no bitplanes */ + { 3, 4, 5, 6, 7}, + { 0, 8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8}, + 8*8 /* 8 bytes */ +}; + +static GFXDECODE_START( pc2000 ) + GFXDECODE_ENTRY( "hd44780", 0x0000, hd44780_charlayout, 0, 1 ) +GFXDECODE_END + +static HD44780_INTERFACE( pc2000_display ) +{ + 2, // number of lines + 20 // chars for line +}; + +static MACHINE_CONFIG_START( pc2000, pc2000_state ) + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",Z80, XTAL_4MHz) /* probably not accurate */ + MCFG_CPU_PROGRAM_MAP(pc2000_mem) + MCFG_CPU_IO_MAP(pc2000_io) + MCFG_CPU_VBLANK_INT("screen",irq0_line_hold) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(50) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ + MCFG_SCREEN_UPDATE_DEVICE("hd44780", hd44780_device, screen_update) + MCFG_SCREEN_SIZE(120, 18) //2x20 chars + MCFG_SCREEN_VISIBLE_AREA(0, 120-1, 0, 18-1) + + MCFG_PALETTE_LENGTH(2) + MCFG_PALETTE_INIT(pc2000) + MCFG_GFXDECODE(pc2000) + MCFG_DEFAULT_LAYOUT(layout_lcd) + + MCFG_HD44780_ADD("hd44780", pc2000_display) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO( "mono" ) + MCFG_SOUND_ADD( BEEPER_TAG, BEEP, 0 ) + MCFG_SOUND_ROUTE( ALL_OUTPUTS, "mono", 1.00 ) + + MCFG_CARTSLOT_ADD("cart") + MCFG_CARTSLOT_EXTENSION_LIST("bin") + MCFG_CARTSLOT_NOT_MANDATORY +MACHINE_CONFIG_END + +/* ROM definition */ +ROM_START( pc2000 ) + ROM_REGION( 0x40000, "bios", ROMREGION_ERASEFF ) + ROM_LOAD( "lh532hee_9344_d.u4", 0x000000, 0x040000, CRC(0b03bf33) SHA1(cb344b94b14975c685041d3e669f386e8a21909f)) + + ROM_REGION( 0x0860, "hd44780", ROMREGION_ERASE ) + ROM_LOAD( "44780a00.bin", 0x0000, 0x0860, BAD_DUMP CRC(3a89024c) SHA1(5a87b68422a916d1b37b5be1f7ad0b3fb3af5a8d)) + + ROM_REGION( 0x4000, "cart", ROMREGION_ERASEFF ) + ROM_CART_LOAD( "cart", 0, 0x4000, 0 ) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1993, pc2000, 0, 0, pc2000, pc2000, driver_device, 0, "Video Technology", "PreComputer 2000", GAME_NOT_WORKING) |