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-rw-r--r--src/mess/drivers/pc2000.c372
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)