/*************************************************************************** Xerox 820 12/05/2009 Skeleton driver. ****************************************************************************/ /* TODO: - Xerox 820-II - Xerox 16/8 - Big Board (+ Italian version MK-82) - Big Board II (+ Italian version MK-83) (see bigbord2.c) - Emerald Microware X120 board - type in Monitor v1.0 from manual - proper keyboard emulation (MCU?) http://users.telenet.be/lust/Xerox820/index.htm http://www.classiccmp.org/dunfield/img41867/system.htm http://www.microcodeconsulting.com/z80/plus2.htm Note: - MK-82 have same roms as original Big Board - MK-83 have 256K of RAM */ #include "emu.h" #include "cpu/z80/z80.h" #include "cpu/z80/z80daisy.h" #include "cpu/i86/i86.h" #include "formats/basicdsk.h" #include "imagedev/flopdrv.h" #include "machine/ram.h" #include "machine/z80pio.h" #include "machine/z80ctc.h" #include "machine/z80dart.h" #include "machine/wd17xx.h" #include "machine/com8116.h" #include "sound/speaker.h" #include "sound/beep.h" #include "includes/xerox820.h" /* Keyboard HACK */ static const UINT8 xerox820_keycodes[3][9][8] = { /* unshifted */ { { 0x1e, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37 }, { 0x38, 0x39, 0x30, 0x2d, 0x3d, 0x08, 0x7f, 0x2d }, { 0x37, 0x38, 0x39, 0x09, 0x71, 0x77, 0x65, 0x72 }, { 0x74, 0x79, 0x75, 0x69, 0x6f, 0x70, 0x5b, 0x5d }, { 0x1b, 0x2b, 0x34, 0x35, 0x36, 0x61, 0x73, 0x64 }, { 0x66, 0x67, 0x68, 0x6a, 0x6b, 0x6c, 0x3b, 0x27 }, { 0x0d, 0x0a, 0x01, 0x31, 0x32, 0x33, 0x7a, 0x78 }, { 0x63, 0x76, 0x62, 0x6e, 0x6d, 0x2c, 0x2e, 0x2f }, { 0x04, 0x02, 0x03, 0x30, 0x2e, 0x20, 0x00, 0x00 } }, /* shifted */ { { 0x1e, 0x21, 0x40, 0x23, 0x24, 0x25, 0x5e, 0x26 }, { 0x2a, 0x28, 0x29, 0x5f, 0x2b, 0x08, 0x7f, 0x2d }, { 0x37, 0x38, 0x39, 0x09, 0x51, 0x57, 0x45, 0x52 }, { 0x54, 0x59, 0x55, 0x49, 0x4f, 0x50, 0x7b, 0x7d }, { 0x1b, 0x2b, 0x34, 0x35, 0x36, 0x41, 0x53, 0x44 }, { 0x46, 0x47, 0x48, 0x4a, 0x4b, 0x4c, 0x3a, 0x22 }, { 0x0d, 0x0a, 0x01, 0x31, 0x32, 0x33, 0x5a, 0x58 }, { 0x43, 0x56, 0x42, 0x4e, 0x4d, 0x3c, 0x3e, 0x3f }, { 0x04, 0x02, 0x03, 0x30, 0x2e, 0x20, 0x00, 0x00 } }, /* control */ { { 0x9e, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97 }, { 0x98, 0x99, 0x90, 0x1f, 0x9a, 0x88, 0xff, 0xad }, { 0xb7, 0xb8, 0xb9, 0x89, 0x11, 0x17, 0x05, 0x12 }, { 0x14, 0x19, 0x15, 0x09, 0x0f, 0x10, 0x1b, 0x1d }, { 0x9b, 0xab, 0xb4, 0xb5, 0xb6, 0x01, 0x13, 0x04 }, { 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0x7e, 0x60 }, { 0x8d, 0x8a, 0x81, 0xb1, 0xb2, 0xb3, 0x1a, 0x18 }, { 0x03, 0x16, 0x02, 0x0e, 0x0d, 0x1c, 0x7c, 0x5c }, { 0x84, 0x82, 0x83, 0xb0, 0xae, 0x00, 0x00, 0x00 } } }; void xerox820_state::scan_keyboard() { static const char *const keynames[] = { "ROW0", "ROW1", "ROW2", "ROW3", "ROW4", "ROW5", "ROW6", "ROW7", "ROW8" }; int table = 0, row, col; int keydata = -1; if (ioport("ROW9")->read() & 0x07) { /* shift, upper case */ table = 1; } if (ioport("ROW9")->read() & 0x18) { /* ctrl */ table = 2; } /* scan keyboard */ for (row = 0; row < 9; row++) { UINT8 data = ioport(keynames[row])->read(); for (col = 0; col < 8; col++) { if (!BIT(data, col)) { /* latch key data */ keydata = ~xerox820_keycodes[table][row][col]; if (m_keydata != keydata) { m_keydata = keydata; /* strobe in keyboard data */ m_kbpio->strobe_b(0); m_kbpio->strobe_b(1); } } } } m_keydata = keydata; } TIMER_DEVICE_CALLBACK_MEMBER(xerox820_state::xerox820_keyboard_tick) { scan_keyboard(); } /* Read/Write Handlers */ void xerox820_state::bankswitch(int bank) { address_space &program = m_maincpu->space(AS_PROGRAM); UINT8 *ram = m_ram->pointer(); if (bank) { /* ROM */ program.install_rom(0x0000, 0x0fff, memregion("monitor")->base()); program.unmap_readwrite(0x1000, 0x1fff); program.install_ram(0x3000, 0x3fff, m_video_ram); } else { /* RAM */ program.install_ram(0x0000, 0x3fff, ram); } } void xerox820ii_state::bankswitch(int bank) { address_space &program = m_maincpu->space(AS_PROGRAM); UINT8 *ram = m_ram->pointer(); if (bank) { /* ROM */ program.install_rom(0x0000, 0x17ff, memregion("monitor")->base()); program.unmap_readwrite(0x1800, 0x2fff); program.install_ram(0x3000, 0x3fff, m_video_ram); program.unmap_readwrite(0x4000, 0xbfff); } else { /* RAM */ program.install_ram(0x0000, 0xbfff, ram); } } WRITE8_MEMBER( xerox820_state::scroll_w ) { m_scroll = (offset >> 8) & 0x1f; } #ifdef UNUSED_CODE WRITE8_MEMBER( xerox820_state::x120_system_w ) { /* bit signal description 0 DSEL0 drive select bit 0 (01=A, 10=B, 00=C, 11=D) 1 DSEL1 drive select bit 1 2 SIDE side select 3 VATT video attribute (0=inverse, 1=blinking) 4 BELL bell trigger 5 DENSITY density (0=double, 1=single) 6 _MOTOR disk motor (0=on, 1=off) 7 BANK memory bank switch (0=RAM, 1=ROM/video) */ } #endif WRITE8_MEMBER( xerox820ii_state::bell_w ) { speaker_level_w(m_speaker, offset ); } WRITE8_MEMBER( xerox820ii_state::slden_w ) { wd17xx_dden_w(m_fdc, offset ? CLEAR_LINE : ASSERT_LINE); } WRITE8_MEMBER( xerox820ii_state::chrom_w ) { m_chrom = offset; } WRITE8_MEMBER( xerox820ii_state::lowlite_w ) { m_lowlite = data; } WRITE8_MEMBER( xerox820ii_state::sync_w ) { if (offset) { /* set external clocks for synchronous sio A */ } else { /* set internal clocks for asynchronous sio A */ } } /* Memory Maps */ static ADDRESS_MAP_START( xerox820_mem, AS_PROGRAM, 8, xerox820_state ) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x3000, 0x3fff) AM_RAM AM_SHARE("video_ram") AM_RANGE(0x4000, 0xffff) AM_RAM ADDRESS_MAP_END static ADDRESS_MAP_START( xerox820_io, AS_IO, 8, xerox820_state ) AM_RANGE(0x00, 0x00) AM_MIRROR(0xff03) AM_DEVWRITE(COM8116_TAG, com8116_device, str_w) AM_RANGE(0x04, 0x04) AM_MIRROR(0xff02) AM_DEVREADWRITE_LEGACY(Z80SIO_TAG, z80dart_d_r, z80dart_d_w) AM_RANGE(0x05, 0x05) AM_MIRROR(0xff02) AM_DEVREADWRITE_LEGACY(Z80SIO_TAG, z80dart_c_r, z80dart_c_w) AM_RANGE(0x08, 0x0b) AM_MIRROR(0xff00) AM_DEVREADWRITE(Z80GPPIO_TAG, z80pio_device, read_alt, write_alt) AM_RANGE(0x0c, 0x0c) AM_MIRROR(0xff03) AM_DEVWRITE(COM8116_TAG, com8116_device, stt_w) AM_RANGE(0x10, 0x13) AM_MIRROR(0xff00) AM_DEVREADWRITE_LEGACY(FD1797_TAG, wd17xx_r, wd17xx_w) AM_RANGE(0x14, 0x14) AM_MIRROR(0xff03) AM_MASK(0xff00) AM_WRITE(scroll_w) AM_RANGE(0x18, 0x1b) AM_MIRROR(0xff00) AM_DEVREADWRITE(Z80CTC_TAG, z80ctc_device, read, write) AM_RANGE(0x1c, 0x1f) AM_MIRROR(0xff00) AM_DEVREADWRITE(Z80KBPIO_TAG, z80pio_device, read_alt, write_alt) ADDRESS_MAP_END static ADDRESS_MAP_START( xerox820ii_mem, AS_PROGRAM, 8, xerox820ii_state ) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x3000, 0x3fff) AM_RAM AM_SHARE("video_ram") AM_RANGE(0xc000, 0xffff) AM_RAM ADDRESS_MAP_END static ADDRESS_MAP_START( xerox820ii_io, AS_IO, 8, xerox820ii_state ) AM_IMPORT_FROM(xerox820_io) AM_RANGE(0x28, 0x29) AM_MIRROR(0xff00) AM_WRITE(bell_w) AM_RANGE(0x30, 0x31) AM_MIRROR(0xff00) AM_WRITE(slden_w) AM_RANGE(0x34, 0x35) AM_MIRROR(0xff00) AM_WRITE(chrom_w) AM_RANGE(0x36, 0x36) AM_MIRROR(0xff00) AM_WRITE(lowlite_w) AM_RANGE(0x68, 0x69) AM_MIRROR(0xff00) AM_WRITE(sync_w) ADDRESS_MAP_END static ADDRESS_MAP_START( xerox168_mem, AS_PROGRAM, 16, xerox820ii_state ) AM_RANGE(0x00000, 0x3ffff) AM_RAM AM_RANGE(0xff000, 0xfffff) AM_ROM AM_REGION(I8086_TAG, 0) ADDRESS_MAP_END static ADDRESS_MAP_START( mk83_mem, AS_PROGRAM, 8, xerox820_state ) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x3000, 0x6fff) AM_RAM AM_RANGE(0x7000, 0x7fff) AM_RAM AM_SHARE("video_ram") AM_RANGE(0x8000, 0xffff) AM_RAM ADDRESS_MAP_END /* Input Ports */ static INPUT_PORTS_START( xerox820 ) PORT_START("ROW0") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("HELP") PORT_CODE(KEYCODE_TILDE) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') 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_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') PORT_START("ROW1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') 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_MINUS) PORT_CHAR('-') PORT_CHAR('_') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BACKSPACE") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DEL") PORT_CODE(KEYCODE_DEL) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad -") PORT_CODE(KEYCODE_MINUS_PAD) PORT_START("ROW2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 7") PORT_CODE(KEYCODE_7_PAD) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 8") PORT_CODE(KEYCODE_8_PAD) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 9") PORT_CODE(KEYCODE_9_PAD) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("TAB") PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') 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_E) PORT_CHAR('e') PORT_CHAR('E') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_START("ROW3") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') 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_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}') PORT_START("ROW4") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad +") PORT_CODE(KEYCODE_PLUS_PAD) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 4") PORT_CODE(KEYCODE_4_PAD) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 5") PORT_CODE(KEYCODE_5_PAD) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 6") PORT_CODE(KEYCODE_6_PAD) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') PORT_START("ROW5") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') 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_L) PORT_CHAR('l') PORT_CHAR('L') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"') PORT_START("ROW6") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("LINE FEED") PORT_CODE(KEYCODE_ENTER_PAD) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 1") PORT_CODE(KEYCODE_1_PAD) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 2") PORT_CODE(KEYCODE_2_PAD) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 3") PORT_CODE(KEYCODE_3_PAD) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_START("ROW7") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') 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_M) PORT_CHAR('m') PORT_CHAR('M') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') PORT_START("ROW8") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_DOWN) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 0") PORT_CODE(KEYCODE_0_PAD) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad .") PORT_CODE(KEYCODE_ASTERISK) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_START("ROW9") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_TOGGLE PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LEFT SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RIGHT SHIFT") PORT_CODE(KEYCODE_RSHIFT) PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("LEFT CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("RIGHT CTRL") PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_MAMEKEY(RCONTROL)) INPUT_PORTS_END TIMER_CALLBACK_MEMBER(xerox820_state::bigboard_beepoff) { beep_set_state(m_beeper, 0); } /* Z80 PIO */ READ8_MEMBER( xerox820_state::kbpio_pa_r ) { /* bit signal description 0 1 2 3 PBRDY keyboard data available 4 8/N5 8"/5.25" disk select (0=5.25", 1=8") 5 400/460 double sided disk detect (only on Etch 2 PCB) (0=SS, 1=DS) 6 7 */ return (m_dsdd << 5) | (m_8n5 << 4) | (m_kbpio->rdy_b() << 3); }; void xerox820_state::common_kbpio_pa_w(UINT8 data) { /* bit signal description 0 _DVSEL1 drive select 1 1 _DVSEL2 drive select 2 2 _DVSEL3 side select 3 4 5 6 NCSET2 display character set (inverted and connected to chargen A10) 7 BANK bank switching (0=RAM, 1=ROM/videoram) */ /* drive select */ int dvsel1 = BIT(data, 0); int dvsel2 = BIT(data, 1); if (dvsel1) wd17xx_set_drive(m_fdc, 0); if (dvsel2) wd17xx_set_drive(m_fdc, 1); floppy_mon_w(m_floppy0, !dvsel1); floppy_mon_w(m_floppy1, !dvsel2); floppy_drive_set_ready_state(m_floppy0, dvsel1, 1); floppy_drive_set_ready_state(m_floppy1, dvsel2, 1); /* side select */ wd17xx_set_side(m_fdc, BIT(data, 2)); /* display character set */ m_ncset2 = !BIT(data, 6); } WRITE8_MEMBER( xerox820_state::kbpio_pa_w ) { common_kbpio_pa_w(data); /* bank switching */ bankswitch(BIT(data, 7)); /* beeper on bigboard */ if (BIT(data, 5) & (!m_bit5)) { machine().scheduler().timer_set(attotime::from_msec(40), timer_expired_delegate(FUNC(xerox820_state::bigboard_beepoff),this)); beep_set_state(m_beeper, 1 ); } m_bit5 = BIT(data, 5); } WRITE8_MEMBER( xerox820ii_state::kbpio_pa_w ) { common_kbpio_pa_w(data); /* bank switching */ bankswitch(BIT(data, 7)); } READ8_MEMBER( xerox820_state::kbpio_pb_r ) { /* bit description 0 KB0 1 KB1 2 KB2 3 KB3 4 KB4 5 KB5 6 KB6 7 KB7 */ return m_keydata; }; static Z80PIO_INTERFACE( xerox820_kbpio_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pa_r), /* port A read callback */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pa_w), /* port A write callback */ DEVCB_NULL, /* portA ready active callback */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pb_r), /* port B read callback */ DEVCB_NULL, /* port B write callback */ DEVCB_NULL /* portB ready active callback */ }; static Z80PIO_INTERFACE( xerox820ii_kbpio_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pa_r), /* port A read callback */ DEVCB_DRIVER_MEMBER(xerox820ii_state, kbpio_pa_w), /* port A write callback */ DEVCB_NULL, /* portA ready active callback */ DEVCB_DRIVER_MEMBER(xerox820_state, kbpio_pb_r), /* port B read callback */ DEVCB_NULL, /* port B write callback */ DEVCB_NULL /* portB ready active callback */ }; static Z80PIO_INTERFACE( gppio_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */ DEVCB_NULL, /* port A read callback */ DEVCB_NULL, /* port A write callback */ DEVCB_NULL, /* portA ready active callback */ DEVCB_NULL, /* port B read callback */ DEVCB_NULL, /* port B write callback */ DEVCB_NULL /* portB ready active callback */ }; /* Z80 SIO */ static Z80DART_INTERFACE( sio_intf ) { 0, 0, 0, 0, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0) }; /* Z80 CTC */ TIMER_DEVICE_CALLBACK_MEMBER(xerox820_state::ctc_tick) { m_ctc->trg0(1); m_ctc->trg0(0); } WRITE_LINE_MEMBER(xerox820_state::ctc_z0_w) { // device_t *device = machine().device(Z80CTC_TAG); // z80ctc_trg1_w(device, state); } WRITE_LINE_MEMBER(xerox820_state::ctc_z2_w) { // device_t *device = machine().device(Z80CTC_TAG); // z80ctc_trg3_w(device, state); } static Z80CTC_INTERFACE( ctc_intf ) { DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* interrupt handler */ DEVCB_DRIVER_LINE_MEMBER(xerox820_state,ctc_z0_w), /* ZC/TO0 callback */ DEVCB_DEVICE_LINE_MEMBER(Z80CTC_TAG, z80ctc_device, trg2), /* ZC/TO1 callback */ DEVCB_DRIVER_LINE_MEMBER(xerox820_state,ctc_z2_w) /* ZC/TO2 callback */ }; /* Z80 Daisy Chain */ static const z80_daisy_config xerox820_daisy_chain[] = { { Z80SIO_TAG }, { Z80KBPIO_TAG }, { Z80GPPIO_TAG }, { Z80CTC_TAG }, { NULL } }; /* WD1771 Interface */ WRITE_LINE_MEMBER( xerox820_state::intrq_w ) { int halt = m_maincpu->state_int(Z80_HALT); m_fdc_irq = state; if (halt && state) m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE); else m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE); } WRITE_LINE_MEMBER( xerox820_state::drq_w ) { int halt = m_maincpu->state_int(Z80_HALT); m_fdc_drq = state; if (halt && state) m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE); else m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE); } static const wd17xx_interface fdc_intf = { DEVCB_NULL, DEVCB_DRIVER_LINE_MEMBER(xerox820_state, intrq_w), DEVCB_DRIVER_LINE_MEMBER(xerox820_state, drq_w), { FLOPPY_0, FLOPPY_1, NULL, NULL } }; /* COM8116 Interface */ static COM8116_INTERFACE( com8116_intf ) { DEVCB_NULL, /* fX/4 output */ DEVCB_NULL, /* fR output */ DEVCB_NULL, /* fT output */ { 101376, 67584, 46080, 37686, 33792, 16896, 8448, 4224, 2816, 2534, 2112, 1408, 1056, 704, 528, 264 }, /* receiver divisor ROM */ { 101376, 67584, 46080, 37686, 33792, 16896, 8448, 4224, 2816, 2534, 2112, 1408, 1056, 704, 528, 264 }, /* transmitter divisor ROM */ }; /* Video */ void xerox820_state::video_start() { /* find memory regions */ m_char_rom = memregion("chargen")->base(); } UINT32 xerox820_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { UINT8 y,ra,chr,gfx; UINT16 sy=0,ma=(m_scroll + 1) * 0x80,x; m_framecnt++; for (y = 0; y < 24; y++) { if (ma > 0xb80) ma = 0; for (ra = 0; ra < 10; ra++) { UINT16 *p = &bitmap.pix16(sy++); for (x = ma; x < ma + 80; x++) { if (ra < 8) { chr = m_video_ram[x & XEROX820_VIDEORAM_MASK] ^ 0x80; /* Take care of flashing characters */ if ((chr < 0x80) && (m_framecnt & 0x08)) chr |= 0x80; /* get pattern of pixels for that character scanline */ gfx = m_char_rom[(m_ncset2 << 10) | (chr<<3) | ra ]; } else gfx = 0xff; /* Display a scanline of a character (7 pixels) */ *p++ = 0; *p++ = BIT(gfx, 4) ^ 1; *p++ = BIT(gfx, 3) ^ 1; *p++ = BIT(gfx, 2) ^ 1; *p++ = BIT(gfx, 1) ^ 1; *p++ = BIT(gfx, 0) ^ 1; *p++ = 0; } } ma+=128; } return 0; } void xerox820_state::set_floppy_parameters(size_t length) { switch (length) { case 77*1*26*128: // 250K 8" SSSD m_8n5 = 1; m_dsdd = 0; break; case 77*1*26*256: // 500K 8" SSDD m_8n5 = 1; m_dsdd = 0; break; case 40*1*18*128: // 90K 5.25" SSSD m_8n5 = 0; m_dsdd = 0; break; case 40*2*18*128: // 180K 5.25" DSSD m_8n5 = 0; m_dsdd = 1; break; } } static void xerox820_load_proc(device_image_interface &image) { xerox820_state *state = image.device().machine().driver_data(); state->set_floppy_parameters(image.length()); } /* Machine Initialization */ void xerox820_state::machine_start() { // set floppy load procs floppy_install_load_proc(m_floppy0, xerox820_load_proc); floppy_install_load_proc(m_floppy1, xerox820_load_proc); /* register for state saving */ save_item(NAME(m_keydata)); save_item(NAME(m_scroll)); save_item(NAME(m_ncset2)); save_item(NAME(m_vatt)); save_item(NAME(m_fdc_irq)); save_item(NAME(m_fdc_drq)); save_item(NAME(m_8n5)); save_item(NAME(m_dsdd)); } void xerox820_state::machine_reset() { bankswitch(1); /* bigboard has a one-pulse output to drive a user-supplied beeper */ beep_set_state(m_beeper, 0); beep_set_frequency(m_beeper, 950); } void xerox820ii_state::machine_reset() { bankswitch(1); } static LEGACY_FLOPPY_OPTIONS_START( xerox820 ) LEGACY_FLOPPY_OPTION( sssd8, "dsk", "8\" SSSD", basicdsk_identify_default, basicdsk_construct_default, NULL, HEADS([1]) TRACKS([77]) SECTORS([26]) SECTOR_LENGTH([128]) FIRST_SECTOR_ID([1])) LEGACY_FLOPPY_OPTION( ssdd8, "dsk", "8\" SSDD", basicdsk_identify_default, basicdsk_construct_default, NULL, HEADS([1]) TRACKS([77]) SECTORS([26]) SECTOR_LENGTH([256]) FIRST_SECTOR_ID([1])) LEGACY_FLOPPY_OPTION( sssd5, "dsk", "5.25\" SSSD", basicdsk_identify_default, basicdsk_construct_default, NULL, HEADS([1]) TRACKS([40]) SECTORS([18]) SECTOR_LENGTH([128]) FIRST_SECTOR_ID([1])) LEGACY_FLOPPY_OPTION( ssdd5, "dsk", "5.25\" SSDD", basicdsk_identify_default, basicdsk_construct_default, NULL, HEADS([2]) TRACKS([40]) SECTORS([18]) SECTOR_LENGTH([128]) FIRST_SECTOR_ID([1])) LEGACY_FLOPPY_OPTIONS_END static const floppy_interface xerox820_floppy_interface = { DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, FLOPPY_STANDARD_5_25_DSDD, LEGACY_FLOPPY_OPTIONS_NAME(xerox820), NULL, NULL }; /* F4 Character Displayer */ static const gfx_layout xerox820_charlayout = { 8, 8, /* 8 x 8 characters */ 256, /* 256 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*8 /* every char takes 8 bytes */ }; static const gfx_layout xerox820_gfxlayout = { 8, 8, /* 8 x 8 characters */ 256, /* 256 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*8 /* every char takes 8 bytes */ }; static GFXDECODE_START( xerox820 ) GFXDECODE_ENTRY( "chargen", 0x0000, xerox820_charlayout, 0, 1 ) GFXDECODE_END static GFXDECODE_START( xerox820ii ) GFXDECODE_ENTRY( "chargen", 0x0000, xerox820_charlayout, 0, 1 ) GFXDECODE_ENTRY( "chargen", 0x0800, xerox820_gfxlayout, 0, 1 ) GFXDECODE_END /* Machine Drivers */ static MACHINE_CONFIG_START( xerox820, xerox820_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_20MHz/8) MCFG_CPU_PROGRAM_MAP(xerox820_mem) MCFG_CPU_IO_MAP(xerox820_io) MCFG_CPU_CONFIG(xerox820_daisy_chain) /* video hardware */ MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) MCFG_SCREEN_UPDATE_DRIVER(xerox820_state, screen_update) MCFG_SCREEN_RAW_PARAMS(XTAL_10_69425MHz, 700, 0, 560, 260, 0, 240) MCFG_GFXDECODE(xerox820) MCFG_PALETTE_LENGTH(2) MCFG_PALETTE_INIT(black_and_white) /* keyboard */ MCFG_TIMER_DRIVER_ADD_PERIODIC("keyboard", xerox820_state, xerox820_keyboard_tick, attotime::from_hz(60)) MCFG_TIMER_DRIVER_ADD_PERIODIC("ctc", xerox820_state, ctc_tick, attotime::from_hz(XTAL_20MHz/8)) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD(BEEPER_TAG, BEEP, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) /* bigboard only */ /* devices */ MCFG_Z80SIO0_ADD(Z80SIO_TAG, XTAL_20MHz/8, sio_intf) MCFG_Z80PIO_ADD(Z80KBPIO_TAG, XTAL_20MHz/8, xerox820_kbpio_intf) MCFG_Z80PIO_ADD(Z80GPPIO_TAG, XTAL_20MHz/8, gppio_intf) MCFG_Z80CTC_ADD(Z80CTC_TAG, XTAL_20MHz/8, ctc_intf) MCFG_FD1797_ADD(FD1797_TAG, fdc_intf) MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(xerox820_floppy_interface) MCFG_COM8116_ADD(COM8116_TAG, XTAL_5_0688MHz, com8116_intf) /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("64K") MACHINE_CONFIG_END static MACHINE_CONFIG_START( xerox820ii, xerox820ii_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_16MHz/4) MCFG_CPU_PROGRAM_MAP(xerox820ii_mem) MCFG_CPU_IO_MAP(xerox820ii_io) MCFG_CPU_CONFIG(xerox820_daisy_chain) /* video hardware */ MCFG_SCREEN_ADD(SCREEN_TAG, RASTER) MCFG_SCREEN_UPDATE_DRIVER(xerox820ii_state, screen_update) MCFG_SCREEN_RAW_PARAMS(XTAL_10_69425MHz, 700, 0, 560, 260, 0, 240) MCFG_GFXDECODE(xerox820ii) MCFG_PALETTE_LENGTH(2) MCFG_PALETTE_INIT(black_and_white) /* keyboard */ MCFG_TIMER_DRIVER_ADD_PERIODIC("keyboard", xerox820_state, xerox820_keyboard_tick, attotime::from_hz(60)) MCFG_TIMER_DRIVER_ADD_PERIODIC("ctc", xerox820_state, ctc_tick, attotime::from_hz(XTAL_16MHz/4)) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD(SPEAKER_TAG, SPEAKER_SOUND, 0) // xerox820ii and xerox168 MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) /* devices */ MCFG_Z80SIO0_ADD(Z80SIO_TAG, XTAL_16MHz/4, sio_intf) MCFG_Z80PIO_ADD(Z80KBPIO_TAG, XTAL_16MHz/4, xerox820ii_kbpio_intf) MCFG_Z80PIO_ADD(Z80GPPIO_TAG, XTAL_16MHz/4, gppio_intf) MCFG_Z80CTC_ADD(Z80CTC_TAG, XTAL_16MHz/4, ctc_intf) MCFG_FD1797_ADD(FD1797_TAG, fdc_intf) MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(xerox820_floppy_interface) MCFG_COM8116_ADD(COM8116_TAG, XTAL_5_0688MHz, com8116_intf) /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("64K") MACHINE_CONFIG_END static MACHINE_CONFIG_DERIVED( xerox168, xerox820ii ) MCFG_CPU_ADD(I8086_TAG, I8086, 4770000) MCFG_CPU_PROGRAM_MAP(xerox168_mem) /* internal ram */ MCFG_RAM_MODIFY(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("192K") MCFG_RAM_EXTRA_OPTIONS("320K") MACHINE_CONFIG_END static MACHINE_CONFIG_DERIVED( mk83, xerox820 ) MCFG_CPU_MODIFY(Z80_TAG) MCFG_CPU_PROGRAM_MAP(mk83_mem) MACHINE_CONFIG_END /* ROMs */ ROM_START( xerox820 ) ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 ) ROM_REGION( 0x1000, "monitor", 0 ) ROM_DEFAULT_BIOS( "v20" ) ROM_SYSTEM_BIOS( 0, "v10", "Xerox Monitor v1.0" ) ROMX_LOAD( "x820v10.u64", 0x0000, 0x0800, NO_DUMP, ROM_BIOS(1) ) ROMX_LOAD( "x820v10.u63", 0x0800, 0x0800, NO_DUMP, ROM_BIOS(1) ) ROM_SYSTEM_BIOS( 1, "v20", "Xerox Monitor v2.0" ) ROMX_LOAD( "x820v20.u64", 0x0000, 0x0800, CRC(2fc227e2) SHA1(b4ea0ae23d281a687956e8a514cb364a1372678e), ROM_BIOS(2) ) ROMX_LOAD( "x820v20.u63", 0x0800, 0x0800, CRC(bc11f834) SHA1(4fd2b209a6e6ff9b0c41800eb5228c34a0d7f7ef), ROM_BIOS(2) ) ROM_SYSTEM_BIOS( 2, "smart23", "MICROCode SmartROM v2.3" ) ROMX_LOAD( "mxkx25a.u64", 0x0000, 0x0800, CRC(7ec5f100) SHA1(5d0ff35a51aa18afc0d9c20ef99ff5d9d3f2075b), ROM_BIOS(3) ) ROMX_LOAD( "mxkx25b.u63", 0x0800, 0x0800, CRC(a7543798) SHA1(886e617e1003d13f86f33085cbd49391b77291a3), ROM_BIOS(3) ) ROM_SYSTEM_BIOS( 3, "plus2", "MICROCode Plus2 v0.2a" ) ROMX_LOAD( "p2x25a.u64", 0x0000, 0x0800, CRC(3ccd7a8f) SHA1(6e46c88f03fc7289595dd6bec95e23bb13969525), ROM_BIOS(4) ) ROMX_LOAD( "p2x25b.u63", 0x0800, 0x0800, CRC(1e580391) SHA1(e91f8ce82586df33c0d6d02eb005e8079f4de67d), ROM_BIOS(4) ) ROM_REGION( 0x800, "chargen", 0 ) ROM_LOAD( "x820.u92", 0x0000, 0x0800, CRC(b823fa98) SHA1(ad0ea346aa257a53ad5701f4201896a2b3a0f928) ) ROM_END ROM_START( xerox820ii ) ROM_REGION( 0x1800, "monitor", 0 ) ROM_DEFAULT_BIOS( "v404" ) ROM_SYSTEM_BIOS( 0, "v404", "Balcones Operating System v4.04" ) ROMX_LOAD( "537p3652.u33", 0x0000, 0x0800, CRC(7807cfbb) SHA1(bd3cc5cc5c59c84a50747aae5c17eb4617b0dbc3), ROM_BIOS(1) ) ROMX_LOAD( "537p3653.u34", 0x0800, 0x0800, CRC(a9c6c0c3) SHA1(c2da9d1bf0da96e6b8bfa722783e411d2fe6deb9), ROM_BIOS(1) ) ROMX_LOAD( "537p3654.u35", 0x1000, 0x0800, CRC(a8a07223) SHA1(e8ae1ebf2d7caf76771205f577b88ae493836ac9), ROM_BIOS(1) ) ROM_REGION( 0x1000, "chargen", 0 ) ROM_LOAD( "x820ii.u57", 0x0000, 0x0800, CRC(1a50f600) SHA1(df4470c80611c14fa7ea8591f741fbbecdfe4fd9) ) ROM_LOAD( "x820ii.u58", 0x0800, 0x0800, CRC(aca4b9b3) SHA1(77f41470b0151945b8d3c3a935fc66409e9157b3) ) ROM_END ROM_START( xerox168 ) ROM_REGION( 0x1800, "monitor", 0 ) ROM_DEFAULT_BIOS( "v404" ) ROM_SYSTEM_BIOS( 0, "v404", "Balcones Operating System v4.04" ) ROMX_LOAD( "537p3652.u33", 0x0000, 0x0800, CRC(7807cfbb) SHA1(bd3cc5cc5c59c84a50747aae5c17eb4617b0dbc3), ROM_BIOS(1) ) ROMX_LOAD( "537p3653.u34", 0x0800, 0x0800, CRC(a9c6c0c3) SHA1(c2da9d1bf0da96e6b8bfa722783e411d2fe6deb9), ROM_BIOS(1) ) ROMX_LOAD( "537p3654.u35", 0x1000, 0x0800, CRC(a8a07223) SHA1(e8ae1ebf2d7caf76771205f577b88ae493836ac9), ROM_BIOS(1) ) ROM_REGION( 0x1000, I8086_TAG, 0 ) ROM_LOAD( "8086.u33", 0x0000, 0x1000, CRC(ee49e3dc) SHA1(a5f20c74fc53f9d695d8894534ab69a39e2c38d8) ) ROM_REGION( 0x1000, "chargen", 0 ) ROM_LOAD( "x820ii.u57", 0x0000, 0x0800, CRC(1a50f600) SHA1(df4470c80611c14fa7ea8591f741fbbecdfe4fd9) ) ROM_LOAD( "x820ii.u58", 0x0800, 0x0800, CRC(aca4b9b3) SHA1(77f41470b0151945b8d3c3a935fc66409e9157b3) ) ROM_END ROM_START( bigboard ) ROM_REGION( 0x1000, "monitor", 0 ) ROM_LOAD( "bigboard.u67", 0x0000, 0x0800, CRC(5a85a228) SHA1(d51a2cbd0aae80315bda9530275aabfe8305364e)) ROM_REGION( 0x800, "chargen", 0 ) ROM_LOAD( "bigboard.u73", 0x0000, 0x0800, CRC(10bf0d81) SHA1(7ec73670a4d9d6421a5d6a4c4edc8b7c87923f6c) ) ROM_END ROM_START( mk83 ) ROM_REGION( 0x1000, "monitor", 0 ) ROM_LOAD( "2732mk83.bin", 0x0000, 0x1000, CRC(a845c7e1) SHA1(3ccf629c5cd384953794ac4a1d2b45678bd40e92)) ROM_REGION( 0x800, "chargen", 0 ) ROM_LOAD( "2716mk83.bin", 0x0000, 0x0800, CRC(10bf0d81) SHA1(7ec73670a4d9d6421a5d6a4c4edc8b7c87923f6c)) ROM_END /* System Drivers */ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1981, xerox820, 0, 0, xerox820, xerox820, driver_device, 0, "Xerox", "Xerox 820", GAME_NO_SOUND_HW) COMP( 1983, xerox820ii, xerox820, 0, xerox820ii, xerox820, driver_device, 0, "Xerox", "Xerox 820-II", GAME_NOT_WORKING ) COMP( 1983, xerox168, xerox820, 0, xerox168, xerox820, driver_device, 0, "Xerox", "Xerox 16/8", GAME_NOT_WORKING ) COMP( 1980, bigboard, 0, 0, xerox820, xerox820, driver_device, 0, "Digital Research Computers", "Big Board", GAME_NOT_WORKING ) COMP( 198?, mk83, 0, 0, mk83, xerox820, driver_device, 0, "Scomar", "MK-83", GAME_NOT_WORKING | GAME_NO_SOUND_HW)