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Diffstat (limited to 'src/mess/drivers/bw2.c')
-rw-r--r--src/mess/drivers/bw2.c719
1 files changed, 719 insertions, 0 deletions
diff --git a/src/mess/drivers/bw2.c b/src/mess/drivers/bw2.c
new file mode 100644
index 00000000000..fabe5736224
--- /dev/null
+++ b/src/mess/drivers/bw2.c
@@ -0,0 +1,719 @@
+/***************************************************************************
+
+ drivers/bw2.c
+
+ Bondwell BW 2
+
+ - Z80L CPU 4MHz
+ - 64KB RAM, expandable to 224KB RAM.
+ - 4KB System ROM
+ - MSM6255 LCD controller, 640x200 pixels
+ - 16KB Video RAM
+ - TMS2797 FDC controller
+ - 8251 USART serial interface
+ - 8253 PIT timer
+ - 8255 PPI
+
+ http://www.thebattles.net/bondwell/
+
+ http://www.vintage-computer.com/bondwell2.shtml
+
+ http://www2.okisemi.com/site/productscatalog/displaydrivers/availabledocuments/Intro-7090.html
+
+
+ TODO:
+
+ - modem card
+
+***************************************************************************/
+
+#include "includes/bw2.h"
+
+int bw2_state::get_ramdisk_size()
+{
+ return ioport("RAMCARD")->read() * 256;
+}
+
+/* Memory */
+
+void bw2_state::bankswitch(UINT8 data)
+{
+ /*
+
+ Y0 /RAM1 Memory bank 1
+ Y1 /VRAM Video memory
+ Y2 /RAM2 Memory bank 2
+ Y3 /RAM3 Memory bank 3
+ Y4 /RAM4 Memory bank 4
+ Y5 /RAM5 Memory bank 5
+ Y6 /RAM6 Memory bank 6
+ Y7 /ROM ROM
+
+ */
+
+ address_space *program = m_maincpu->memory().space(AS_PROGRAM);
+
+ int max_ram_bank = 0;
+
+ m_bank = data & 0x07;
+
+ switch (m_ram->size())
+ {
+ case 64 * 1024:
+ max_ram_bank = BANK_RAM1;
+ break;
+
+ case 96 * 1024:
+ max_ram_bank = BANK_RAM2;
+ break;
+
+ case 128 * 1024:
+ max_ram_bank = BANK_RAM3;
+ break;
+
+ case 160 * 1024:
+ max_ram_bank = BANK_RAM4;
+ break;
+
+ case 192 * 1024:
+ max_ram_bank = BANK_RAM5;
+ break;
+
+ case 224 * 1024:
+ max_ram_bank = BANK_RAM6;
+ break;
+ }
+
+ switch (m_bank)
+ {
+ case BANK_RAM1:
+ program->install_readwrite_bank(0x0000, 0x7fff, "bank1");
+ break;
+
+ case BANK_VRAM:
+ program->install_readwrite_bank(0x0000, 0x3fff, 0, 0x4000, "bank1");
+ break;
+
+ case BANK_RAM2:
+ case BANK_RAM3:
+ case BANK_RAM4:
+ case BANK_RAM5:
+ case BANK_RAM6:
+ if (m_bank > max_ram_bank)
+ {
+ program->unmap_readwrite(0x0000, 0x7fff);
+ }
+ else
+ {
+ program->install_readwrite_bank(0x0000, 0x7fff, "bank1");
+ }
+ break;
+
+ case BANK_ROM:
+ program->install_read_bank(0x0000, 0x7fff, "bank1");
+ program->unmap_write(0x0000, 0x7fff);
+ break;
+ }
+
+ membank("bank1")->set_entry(m_bank);
+}
+
+void bw2_state::ramcard_bankswitch(UINT8 data)
+{
+ /*
+
+ Y0 /RAM1 Memory bank 1
+ Y1 /VRAM Video memory
+ Y2 /RAM2 RAMCARD ROM
+ Y3 /RAM3 Memory bank 3
+ Y4 /RAM4 Memory bank 4
+ Y5 /RAM5 RAMCARD RAM
+ Y6 /RAM6 Memory bank 6
+ Y7 /ROM ROM
+
+ */
+
+ address_space *program = m_maincpu->memory().space(AS_PROGRAM);
+
+ int max_ram_bank = BANK_RAM1;
+
+ m_bank = data & 0x07;
+
+ switch (m_ram->size())
+ {
+ case 64 * 1024:
+ case 96 * 1024:
+ max_ram_bank = BANK_RAM1;
+ break;
+
+ case 128 * 1024:
+ max_ram_bank = BANK_RAM3;
+ break;
+
+ case 160 * 1024:
+ max_ram_bank = BANK_RAM4;
+ break;
+
+ case 192 * 1024:
+ case 224 * 1024:
+ max_ram_bank = BANK_RAM6;
+ break;
+ }
+
+ switch (m_bank)
+ {
+ case BANK_RAM1:
+ case BANK_RAMCARD_RAM:
+ program->install_readwrite_bank(0x0000, 0x7fff, "bank1");
+ break;
+
+ case BANK_VRAM:
+ program->install_readwrite_bank(0x0000, 0x3fff, 0, 0x4000, "bank1");
+ break;
+
+ case BANK_RAM3:
+ case BANK_RAM4:
+ case BANK_RAM6:
+ if (m_bank > max_ram_bank)
+ {
+ program->unmap_readwrite(0x0000, 0x7fff);
+ }
+ else
+ {
+ program->install_readwrite_bank(0x0000, 0x7fff, "bank1");
+ }
+ break;
+
+ case BANK_RAMCARD_ROM:
+ program->install_read_bank(0x0000, 0x3fff, 0, 0x4000, "bank1");
+ program->unmap_write(0x0000, 0x3fff, 0, 0x4000);
+ break;
+
+ case BANK_ROM:
+ program->install_read_bank(0x0000, 0x7fff, "bank1");
+ program->unmap_write(0x0000, 0x7fff);
+ break;
+ }
+
+ membank("bank1")->set_entry(m_bank);
+}
+
+WRITE8_MEMBER( bw2_state::ramcard_bank_w )
+{
+ address_space *program = m_maincpu->memory().space(AS_PROGRAM);
+
+ UINT8 ramcard_bank = data & 0x0f;
+ UINT32 bank_offset = ramcard_bank * 0x8000;
+
+ if ((get_ramdisk_size() == 256) && (ramcard_bank > 7))
+ {
+ program->unmap_readwrite(0x0000, 0x7fff);
+ }
+ else
+ {
+ program->install_readwrite_bank(0x0000, 0x7fff, "bank1");
+ }
+
+ membank("bank1")->configure_entry(BANK_RAMCARD_RAM, m_ramcard_ram + bank_offset);
+ membank("bank1")->set_entry(m_bank);
+}
+
+/* Floppy */
+
+WRITE_LINE_MEMBER( bw2_state::fdc_drq_w )
+{
+ if (state)
+ {
+ if (cpu_get_reg(m_maincpu, Z80_HALT))
+ {
+ device_set_input_line(m_maincpu, INPUT_LINE_NMI, HOLD_LINE);
+ }
+ }
+ else
+ {
+ device_set_input_line(m_maincpu, INPUT_LINE_NMI, CLEAR_LINE);
+ }
+}
+
+static ADDRESS_MAP_START( bw2_mem, AS_PROGRAM, 8, bw2_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ AM_RANGE(0x0000, 0x7fff) AM_RAMBANK("bank1")
+ AM_RANGE(0x8000, 0xffff) AM_RAM
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( bw2_io, AS_IO, 8, bw2_state )
+ ADDRESS_MAP_UNMAP_HIGH
+ ADDRESS_MAP_GLOBAL_MASK(0xff)
+ AM_RANGE( 0x00, 0x03 ) AM_DEVREADWRITE(I8255A_TAG, i8255_device, read, write)
+ AM_RANGE( 0x10, 0x13 ) AM_DEVREADWRITE_LEGACY(PIT8253_TAG, pit8253_r, pit8253_w)
+ AM_RANGE( 0x20, 0x21 ) AM_DEVREADWRITE(MSM6255_TAG, msm6255_device, read, write)
+// AM_RANGE( 0x30, 0x3f ) SLOT
+ AM_RANGE( 0x40, 0x40 ) AM_DEVREADWRITE(I8251_TAG, i8251_device, data_r, data_w)
+ AM_RANGE( 0x41, 0x41 ) AM_DEVREADWRITE(I8251_TAG, i8251_device, status_r, control_w)
+ AM_RANGE( 0x50, 0x50 ) AM_DEVWRITE(CENTRONICS_TAG, centronics_device, write)
+ AM_RANGE( 0x60, 0x63 ) AM_DEVREADWRITE_LEGACY(WD2797_TAG, wd17xx_r, wd17xx_w)
+// AM_RANGE( 0x70, 0x7f ) MODEMSEL
+ADDRESS_MAP_END
+
+/*
+ Keyboard matrix
+ X0 X1 X2 X3 X4 X5 X6 X7
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y9 |CAPS | | | | | | | |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y8 |SHIFT| |SPACE| Z | A | Q | 2 " | F1 |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y7 |CTRL | - = | \ | | X | S | W | 3 # | F2 |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y6 | @ ` | P | UP | C | D | E | 4 $ | F3 |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y5 | 1 ! | | | V | F | R | 5 % | F4 |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y4 | ESC | | | B | G | T | 6 & | F5 |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y3 | TAB | : * |ENTER| N | H | Y | 7 ' | F6 |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y2 |DOWN | ^ ~ | [ { | M | J | U | 8 ( | F7 |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y1 |RIGHT| ; + | ] } | , < | K | I | 9 ) | F8 |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+ Y0 |LEFT | BS | / ? | . > | L | O | 0 _ | DEL |
+ +-----+-----+-----+-----+-----+-----+-----+-----+
+*/
+
+static INPUT_PORTS_START( bw2 )
+ PORT_START("ROW0")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('_')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(DEL))
+
+ PORT_START("ROW1")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F8))
+
+ PORT_START("ROW2")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('^') PORT_CHAR('~')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) 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_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7))
+
+ PORT_START("ROW3")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR(UCHAR_MAMEKEY(TAB))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR(':') PORT_CHAR('*')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F6))
+
+ PORT_START("ROW4")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_CHAR(27)
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5))
+
+ PORT_START("ROW5")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
+ 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_5) PORT_CHAR('5') PORT_CHAR('%')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4))
+
+ PORT_START("ROW6")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('@') PORT_CHAR('`')
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
+ 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_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3))
+
+ PORT_START("ROW7")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2))
+
+ PORT_START("ROW8")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1))
+
+ PORT_START("ROW9")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK))
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED)
+
+ PORT_START("BAUD")
+ PORT_CONFNAME( 0x05, 0x05, "Baud rate")
+ PORT_CONFSETTING( 0x00, "9600 baud" )
+ PORT_CONFSETTING( 0x01, "4800 baud" )
+ PORT_CONFSETTING( 0x02, "2400 baud" )
+ PORT_CONFSETTING( 0x03, "1200 baud" )
+ PORT_CONFSETTING( 0x04, "600 baud" )
+ PORT_CONFSETTING( 0x05, "300 baud" )
+
+ PORT_START("RAMCARD")
+ PORT_CONFNAME( 0x03, 0x00, "RAMCARD")
+ PORT_CONFSETTING( 0x00, DEF_STR( None ) )
+ PORT_CONFSETTING( 0x01, "256 KB" )
+ PORT_CONFSETTING( 0x02, "512 KB" )
+INPUT_PORTS_END
+
+/* PPI */
+
+WRITE8_MEMBER( bw2_state::ppi_pa_w )
+{
+ /*
+
+ PA0 KB0 Keyboard line select 0
+ PA1 KB1 Keyboard line select 1
+ PA2 KB2 Keyboard line select 2
+ PA3 KB3 Keyboard line select 3
+ PA4 /DS0 Drive select 0
+ PA5 /DS1 Drive select 1
+ PA6 Select RS232 connector
+ PA7 /STROBE to centronics printer
+
+ */
+
+ m_kb_row = data & 0x0f;
+
+ if (BIT(data, 4))
+ {
+ m_drive = 0;
+
+ wd17xx_set_drive(m_fdc, m_drive);
+ }
+
+ if (BIT(data, 5))
+ {
+ m_drive = 1;
+
+ wd17xx_set_drive(m_fdc, m_drive);
+ }
+
+ m_centronics->strobe_w(BIT(data, 7));
+}
+
+READ8_MEMBER( bw2_state::ppi_pb_r )
+{
+ /*
+
+ PB0 Keyboard column status of selected line
+ PB1 Keyboard column status of selected line
+ PB2 Keyboard column status of selected line
+ PB3 Keyboard column status of selected line
+ PB4 Keyboard column status of selected line
+ PB5 Keyboard column status of selected line
+ PB6 Keyboard column status of selected line
+ PB7 Keyboard column status of selected line
+
+ */
+
+ static const char *const rownames[] = { "ROW0", "ROW1", "ROW2", "ROW3", "ROW4", "ROW5", "ROW6", "ROW7", "ROW8", "ROW9" };
+
+ UINT8 data = 0xff;
+
+ if (m_kb_row <= 9)
+ {
+ data = ioport(rownames[m_kb_row])->read();
+ }
+
+ return data;
+}
+
+WRITE8_MEMBER( bw2_state::ppi_pc_w )
+{
+ /*
+
+ PC0 Memory bank select
+ PC1 Memory bank select
+ PC2 Memory bank select
+ PC3 Not connected
+
+ */
+
+ if (get_ramdisk_size() > 0)
+ {
+ ramcard_bankswitch(data & 0x07);
+ }
+ else
+ {
+ bankswitch(data & 0x07);
+ }
+}
+
+READ8_MEMBER( bw2_state::ppi_pc_r )
+{
+ /*
+
+ PC4 BUSY from centronics printer
+ PC5 M/FDBK motor feedback
+ PC6 RLSD Carrier detect from RS232
+ PC7 /PROT Write protected disk
+
+ */
+
+ UINT8 data = 0;
+
+ data |= m_centronics->busy_r() << 4;
+ data |= m_mfdbk << 5;
+
+ data |= floppy_wpt_r(m_drive ? m_floppy1 : m_floppy0) << 7;
+
+ return data;
+}
+
+static I8255A_INTERFACE( ppi_intf )
+{
+ DEVCB_NULL,
+ DEVCB_DRIVER_MEMBER(bw2_state, ppi_pa_w),
+ DEVCB_DRIVER_MEMBER(bw2_state, ppi_pb_r),
+ DEVCB_NULL,
+ DEVCB_DRIVER_MEMBER(bw2_state, ppi_pc_r),
+ DEVCB_DRIVER_MEMBER(bw2_state, ppi_pc_w),
+};
+
+/* PIT */
+
+WRITE_LINE_MEMBER( bw2_state::pit_out0_w )
+{
+ m_uart->transmit_clock();
+ m_uart->receive_clock();
+}
+
+WRITE_LINE_MEMBER( bw2_state::mtron_w )
+{
+ m_mtron = state;
+ m_mfdbk = !state;
+
+ floppy_mon_w(m_floppy0, m_mtron);
+ floppy_mon_w(m_floppy1, m_mtron);
+
+ floppy_drive_set_ready_state(m_floppy0, 1, 1);
+ floppy_drive_set_ready_state(m_floppy1, 1, 1);
+}
+
+static const struct pit8253_config pit_intf =
+{
+ {
+ {
+ XTAL_16MHz/4, /* 8251 USART TXC, RXC */
+ DEVCB_LINE_VCC,
+ DEVCB_DRIVER_LINE_MEMBER(bw2_state, pit_out0_w)
+ },
+ {
+ 11000, /* LCD controller */
+ DEVCB_LINE_VCC,
+ DEVCB_DEVICE_LINE(PIT8253_TAG, pit8253_clk2_w)
+ },
+ {
+ 0, /* Floppy /MTRON */
+ DEVCB_LINE_VCC,
+ DEVCB_DRIVER_LINE_MEMBER(bw2_state, mtron_w)
+ }
+ }
+};
+
+
+/* Video */
+
+static PALETTE_INIT( bw2 )
+{
+ palette_set_color_rgb(machine, 0, 0xa5, 0xad, 0xa5);
+ palette_set_color_rgb(machine, 1, 0x31, 0x39, 0x10);
+}
+
+static MSM6255_CHAR_RAM_READ( bw2_charram_r )
+{
+ bw2_state *state = device->machine().driver_data<bw2_state>();
+
+ return state->m_video_ram[ma & 0x3fff];
+}
+
+static MSM6255_INTERFACE( lcdc_intf )
+{
+ SCREEN_TAG,
+ 0,
+ bw2_charram_r,
+};
+
+static LEGACY_FLOPPY_OPTIONS_START(bw2)
+ LEGACY_FLOPPY_OPTION(bw2, "dsk", "BW2 340K disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
+ HEADS([1])
+ TRACKS([80])
+ SECTORS([17])
+ SECTOR_LENGTH([256])
+ FIRST_SECTOR_ID([0]))
+ LEGACY_FLOPPY_OPTION(bw2, "dsk", "BW2 360K disk image", basicdsk_identify_default, basicdsk_construct_default, NULL,
+ HEADS([1])
+ TRACKS([80])
+ SECTORS([18])
+ SECTOR_LENGTH([256])
+ FIRST_SECTOR_ID([0]))
+LEGACY_FLOPPY_OPTIONS_END
+
+static const floppy_interface bw2_floppy_interface =
+{
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ DEVCB_NULL,
+ FLOPPY_STANDARD_3_5_SSDD, // Teac FD-35
+ LEGACY_FLOPPY_OPTIONS_NAME(bw2),
+ "floppy_3_5",
+ NULL
+};
+
+static const wd17xx_interface fdc_intf =
+{
+ DEVCB_LINE_GND,
+ DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0),
+ DEVCB_DRIVER_LINE_MEMBER(bw2_state, fdc_drq_w),
+ { FLOPPY_0, FLOPPY_1, NULL, NULL }
+};
+
+/* Machine */
+
+void bw2_state::machine_start()
+{
+ /* allocate memory */
+ m_video_ram = auto_alloc_array(machine(), UINT8, BW2_VIDEORAM_SIZE);
+ m_ramcard_ram = auto_alloc_array(machine(), UINT8, BW2_RAMCARD_SIZE);
+
+ /* memory banking */
+ membank("bank1")->configure_entry(BANK_RAM1, m_ram->pointer());
+ membank("bank1")->configure_entry(BANK_VRAM, m_video_ram);
+ membank("bank1")->configure_entry(BANK_ROM, memregion("ic1")->base());
+
+ /* register for state saving */
+ save_item(NAME(m_kb_row));
+ save_pointer(NAME(m_ramcard_ram), BW2_RAMCARD_SIZE);
+ save_item(NAME(m_bank));
+ save_item(NAME(m_drive));
+ save_item(NAME(m_mtron));
+ save_item(NAME(m_mfdbk));
+ save_pointer(NAME(m_video_ram), BW2_VIDEORAM_SIZE);
+}
+
+void bw2_state::machine_reset()
+{
+ address_space *io = machine().device(Z80_TAG)->memory().space(AS_IO);
+
+ if (get_ramdisk_size() > 0)
+ {
+ // RAMCARD installed
+
+ membank("bank1")->configure_entry(BANK_RAMCARD_ROM, memregion("ramcard")->base());
+ membank("bank1")->configure_entries(BANK_RAM3, 2, m_ram->pointer() + 0x8000, 0x8000);
+ membank("bank1")->configure_entry(BANK_RAMCARD_RAM, m_ramcard_ram);
+ membank("bank1")->configure_entry(BANK_RAM6, m_ram->pointer() + 0x18000);
+
+ io->install_write_handler(0x30, 0x30, 0, 0x0f, write8_delegate(FUNC(bw2_state::ramcard_bank_w), this), 0);
+ }
+ else
+ {
+ // no RAMCARD
+
+ membank("bank1")->configure_entries(BANK_RAM2, 5, m_ram->pointer() + 0x8000, 0x8000);
+
+ io->unmap_write(0x30, 0x30, 0, 0x0f);
+ }
+
+ membank("bank1")->set_entry(BANK_ROM);
+}
+
+static MACHINE_CONFIG_START( bw2, bw2_state )
+ // basic machine hardware
+ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_16MHz/4)
+ MCFG_CPU_PROGRAM_MAP(bw2_mem)
+ MCFG_CPU_IO_MAP(bw2_io)
+
+ // video hardware
+ MCFG_SCREEN_ADD( SCREEN_TAG, LCD )
+ MCFG_SCREEN_REFRESH_RATE( 60 )
+ MCFG_SCREEN_UPDATE_DEVICE( MSM6255_TAG, msm6255_device, screen_update )
+ MCFG_SCREEN_SIZE( 640, 200 )
+ MCFG_SCREEN_VISIBLE_AREA( 0, 640-1, 0, 200-1 )
+ MCFG_DEFAULT_LAYOUT( layout_lcd )
+
+ MCFG_PALETTE_LENGTH( 2 )
+ MCFG_PALETTE_INIT( bw2 )
+
+ // devices
+ MCFG_PIT8253_ADD(PIT8253_TAG, pit_intf)
+ MCFG_I8255A_ADD(I8255A_TAG, ppi_intf)
+ MCFG_MSM6255_ADD(MSM6255_TAG, XTAL_16MHz, lcdc_intf)
+ MCFG_CENTRONICS_PRINTER_ADD(CENTRONICS_TAG, standard_centronics)
+ MCFG_I8251_ADD(I8251_TAG, default_i8251_interface)
+ MCFG_WD2797_ADD(WD2797_TAG, fdc_intf)
+ MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(bw2_floppy_interface)
+
+ // software list
+ MCFG_SOFTWARE_LIST_ADD("flop_list","bw2")
+
+ // internal ram
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("64K")
+ MCFG_RAM_EXTRA_OPTIONS("96K,128K,160K,192K,224K")
+MACHINE_CONFIG_END
+
+/***************************************************************************
+
+ System driver(s)
+
+***************************************************************************/
+
+ROM_START( bw2 )
+ ROM_REGION(0x10000, "ic1", 0)
+ ROM_SYSTEM_BIOS(0, "20", "BW 2 v2.0")
+ ROMX_LOAD("bw2-20.ic8", 0x0000, 0x1000, CRC(86f36471) SHA1(a3e2ba4edd50ff8424bb0675bdbb3b9f13c04c9d), ROM_BIOS(1))
+ ROM_SYSTEM_BIOS(1, "12", "BW 2 v1.2")
+ ROMX_LOAD("bw2-12.ic8", 0x0000, 0x1000, CRC(0ab42d10) SHA1(430b232631eee9b715151b8d191b7eb9449ac513), ROM_BIOS(2))
+
+ ROM_REGION(0x4000, "ramcard", 0)
+ ROM_LOAD("ramcard-10.bin", 0x0000, 0x4000, CRC(68cde1ba) SHA1(a776a27d64f7b857565594beb63aa2cd692dcf04))
+ROM_END
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1985, bw2, 0, 0, bw2, bw2, driver_device, 0, "Bondwell Holding", "Bondwell Model 2", GAME_NO_SOUND )