// license:BSD-3-Clause // copyright-holders:Robbbert /*************************************************************************** Memory map 0000-37ff ROM R D0-D7 37de UART status R/W D0-D7 37df UART data R/W D0-D7 37e0 for the realtime clock 37e1 select disk drive 0 W 37e2 cassette drive latch address W 37e3 select disk drive 1 W 37e4 select which cassette unit W D0-D1 (D0 selects unit 1, D1 selects unit 2) 37e5 select disk drive 2 W 37e7 select disk drive 3 W 37e0-37e3 floppy motor W D0-D3 or floppy head select W D3 37e8 send a byte to printer W D0-D7 37e8 read printer status R D7 37ec-37ef FDC WD179x R/W D0-D7 37ec command W D0-D7 37ec status R D0-D7 37ed track R/W D0-D7 37ee sector R/W D0-D7 37ef data R/W D0-D7 3800-38ff keyboard matrix R D0-D7 3900-3bff unused - kbd mirrored 3c00-3fff video RAM R/W D0-D5,D7 (or D0-D7) 4000-ffff RAM Interrupts: - IRQ mode 1 - NMI Has non-addressable links to set the baud rate. Receive and Transmit clocks are tied together. Cassette baud rates: - 500 baud @1.77MHz and 1000 baud @4MHz. I/O ports FF: - bits 0 and 1 are for writing a cassette - bit 2 must be high to turn the cassette motor on - bit 3 switches the display between 64 or 32 characters per line - bit 6 remembers the 32/64 screen mode (inverted) - bit 7 is for reading from a cassette FE: - bit 0 is for selecting inverse video of the whole screen - bit 1 chooses text or graphics screen - bit 2 enables colour - bit 3 is for selecting roms (low) or 16k hires area (high) Shift and Right-arrow will enable 32 cpl. SYSTEM commands: - Press Break (End key) to quit - Press Enter to exit with error - xxxx to load program xxxx from tape. - / to execute last program loaded - /nnnnn to execute program at nnnnn (decimal) About the RTC - The hardware side exists, but special software is needed to get the clock to work. By default, nothing happens. ******************************************************************************************************** To Do / Status: -------------- - basically works - hi-res and colour are coded and pass the test suite, but need some real programs to check with. - investigate expansion-box - none of my collection of lnw80-specific floppies will work; some crash MAME *******************************************************************************************************/ #include "emu.h" #include "includes/trs80.h" #include "machine/input_merger.h" #include "formats/td0_dsk.h" #include "softlist_dev.h" namespace { class lnw80_state : public trs80_state { public: lnw80_state(const machine_config &mconfig, device_type type, const char *tag) : trs80_state(mconfig, type, tag) , m_p_gfxram(*this, "gfxram") , m_lnw_bank(*this, "lnw_banked_mem") { } void lnw80(machine_config &config); protected: virtual void machine_start() override; virtual void machine_reset() override; private: static void floppy_formats(format_registration &fr); void lnw80_fe_w(u8 data); u8 lnw80_fe_r(); void lnw80_palette(palette_device &palette) const; u32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void lnw80_io(address_map &map); void lnw80_mem(address_map &map); u8 m_lnw_mode = 0U; required_shared_ptr m_p_gfxram; memory_view m_lnw_bank; }; void lnw80_state::lnw80_mem(address_map &map) { map(0x0000, 0x3fff).view(m_lnw_bank); m_lnw_bank[0](0x0000, 0x2fff).rom().region("maincpu", 0); m_lnw_bank[0](0x37de, 0x37de).rw(FUNC(lnw80_state::sys80_f9_r), FUNC(lnw80_state::sys80_f8_w)); m_lnw_bank[0](0x37e0, 0x37e3).rw(FUNC(lnw80_state::irq_status_r), FUNC(lnw80_state::motor_w)); m_lnw_bank[0](0x37e4, 0x37e7).w(FUNC(lnw80_state::cassunit_w)); m_lnw_bank[0](0x37e8, 0x37eb).rw(FUNC(lnw80_state::printer_r), FUNC(lnw80_state::printer_w)); m_lnw_bank[0](0x37ec, 0x37ef).rw(FUNC(lnw80_state::fdc_r), FUNC(lnw80_state::fdc_w)); m_lnw_bank[0](0x3800, 0x3bff).r(FUNC(lnw80_state::keyboard_r)); m_lnw_bank[0](0x3c00, 0x3fff).ram().share(m_p_videoram); m_lnw_bank[1](0x0000, 0x3fff).ram().share(m_p_gfxram); map(0x4000, 0xffff).ram(); } void lnw80_state::lnw80_io(address_map &map) { map.global_mask(0xff); map.unmap_value_high(); map(0xe8, 0xe8).rw(FUNC(lnw80_state::port_e8_r), FUNC(lnw80_state::port_e8_w)); map(0xe9, 0xe9).portr("E9"); map(0xea, 0xea).rw(FUNC(lnw80_state::port_ea_r), FUNC(lnw80_state::port_ea_w)); map(0xeb, 0xeb).rw(m_uart, FUNC(ay31015_device::receive), FUNC(ay31015_device::transmit)); map(0xfe, 0xfe).rw(FUNC(lnw80_state::lnw80_fe_r), FUNC(lnw80_state::lnw80_fe_w)); map(0xff, 0xff).rw(FUNC(lnw80_state::port_ff_r), FUNC(lnw80_state::port_ff_w)); } /************************************************************************** w/o SHIFT with SHIFT +-------------------------------+ +-------------------------------+ | 0 1 2 3 4 5 6 7 | | 0 1 2 3 4 5 6 7 | +--+---+---+---+---+---+---+---+---+ +--+---+---+---+---+---+---+---+---+ |0 | @ | A | B | C | D | E | F | G | |0 | ` | a | b | c | d | e | f | g | | +---+---+---+---+---+---+---+---+ | +---+---+---+---+---+---+---+---+ |1 | H | I | J | K | L | M | N | O | |1 | h | i | j | k | l | m | n | o | | +---+---+---+---+---+---+---+---+ | +---+---+---+---+---+---+---+---+ |2 | P | Q | R | S | T | U | V | W | |2 | p | q | r | s | t | u | v | w | | +---+---+---+---+---+---+---+---+ | +---+---+---+---+---+---+---+---+ |3 | X | Y | Z | [ | \ | ] | ^ | _ | |3 | x | y | z | { | | | } | ~ | | | +---+---+---+---+---+---+---+---+ | +---+---+---+---+---+---+---+---+ |4 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | |4 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | | +---+---+---+---+---+---+---+---+ | +---+---+---+---+---+---+---+---+ |5 | 8 | 9 | : | ; | , | - | . | / | |5 | 8 | 9 | * | + | < | = | > | ? | | +---+---+---+---+---+---+---+---+ | +---+---+---+---+---+---+---+---+ |6 |ENT|CLR|BRK|UP |DN |LFT|RGT|SPC| |6 |ENT|CLR|BRK|UP |DN |LFT|RGT|SPC| | +---+---+---+---+---+---+---+---+ | +---+---+---+---+---+---+---+---+ |7 |SHF| | | | | | | | |7 |SHF| | | | | | | | +--+---+---+---+---+---+---+---+---+ +--+---+---+---+---+---+---+---+---+ ***************************************************************************/ static INPUT_PORTS_START( lnw80 ) PORT_START("LINE0") PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("@") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@') PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a') PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b') PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c') PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d') PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e') PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f') PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g') PORT_START("LINE1") PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h') PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i') PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j') PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k') PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l') PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m') PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n') PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o') PORT_START("LINE2") PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p') PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q') PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r') PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s') PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t') PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u') PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v') PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w') PORT_START("LINE3") PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x') PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y') PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z') PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("F1") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("F2") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2)) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("_") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('_') PORT_BIT(0x28, 0x00, IPT_UNUSED) PORT_START("LINE4") PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"') PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') PORT_START("LINE5") PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME(": *") PORT_CODE(KEYCODE_MINUS) PORT_CHAR(':') PORT_CHAR('*') PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME("; +") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+') PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("- =") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('-') PORT_CHAR('=') PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') PORT_START("LINE6") PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("Enter") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(13) PORT_BIT(0x02, 0x00, IPT_KEYBOARD) PORT_NAME("Clear") PORT_CODE(KEYCODE_HOME) PORT_CHAR(UCHAR_MAMEKEY(F8)) PORT_BIT(0x04, 0x00, IPT_KEYBOARD) PORT_NAME("Break") PORT_CODE(KEYCODE_END) PORT_CHAR(UCHAR_MAMEKEY(F9)) PORT_BIT(0x08, 0x00, IPT_KEYBOARD) PORT_NAME(UTF8_UP) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("Down") PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) /* backspace do the same as cursor left */ PORT_BIT(0x20, 0x00, IPT_KEYBOARD) PORT_NAME("Left") PORT_CODE(KEYCODE_LEFT) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_BIT(0x40, 0x00, IPT_KEYBOARD) PORT_NAME("Right") PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_BIT(0x80, 0x00, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_START("LINE7") PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT(0x10, 0x00, IPT_KEYBOARD) PORT_NAME("Control") PORT_CODE(KEYCODE_LCONTROL) PORT_BIT(0xee, 0x00, IPT_UNUSED) PORT_START("RESET") PORT_BIT(0x01, 0x00, IPT_KEYBOARD) PORT_NAME("Reset") PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(PAUSE)) PORT_WRITE_LINE_DEVICE_MEMBER("nmigate", input_merger_device, in_w<0>) PORT_START("CONFIG") PORT_CONFNAME( 0x80, 0x00, "Floppy Disc Drives") PORT_CONFSETTING( 0x00, DEF_STR( Off ) ) PORT_CONFSETTING( 0x80, DEF_STR( On ) ) PORT_CONFNAME( 0x40, 0x00, "CPU Speed") PORT_CONFSETTING( 0x00, "1.77 MHz" ) PORT_CONFSETTING( 0x40, "4 MHz" ) PORT_START("E9") // these are the power-on uart settings PORT_BIT(0x07, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_DIPNAME( 0x88, 0x08, "Parity") PORT_DIPSETTING( 0x08, DEF_STR(None)) PORT_DIPSETTING( 0x00, "Odd") PORT_DIPSETTING( 0x80, "Even") PORT_DIPNAME( 0x10, 0x10, "Stop Bits") PORT_DIPSETTING( 0x10, "2") PORT_DIPSETTING( 0x00, "1") PORT_DIPNAME( 0x60, 0x60, "Bits") PORT_DIPSETTING( 0x00, "5") PORT_DIPSETTING( 0x20, "6") PORT_DIPSETTING( 0x40, "7") PORT_DIPSETTING( 0x60, "8") PORT_START("BAUD") PORT_DIPNAME( 0xff, 0x06, "Baud Rate") PORT_DIPSETTING( 0x00, "110") PORT_DIPSETTING( 0x01, "300") PORT_DIPSETTING( 0x02, "600") PORT_DIPSETTING( 0x03, "1200") PORT_DIPSETTING( 0x04, "2400") PORT_DIPSETTING( 0x05, "4800") PORT_DIPSETTING( 0x06, "9600") PORT_DIPSETTING( 0x07, "19200") INPUT_PORTS_END /************************************* * * Port handlers. * *************************************/ u8 lnw80_state::lnw80_fe_r() { return m_lnw_mode; } /* lnw80 can switch out all the devices, roms and video ram to be replaced by graphics ram. */ void lnw80_state::lnw80_fe_w(u8 data) { /* lnw80 video options d3 bankswitch lower 16k between roms and hires ram (1=hires) d2 enable colour \ d1 hres / these 2 are the bits from the MODE command of LNWBASIC d0 inverse video (entire screen) */ m_lnw_mode = data; m_lnw_bank.select(BIT(data, 3)); } /************************************* * Machine * *************************************/ void lnw80_state::machine_start() { save_item(NAME(m_cpl)); save_item(NAME(m_irq)); save_item(NAME(m_mask)); save_item(NAME(m_reg_load)); save_item(NAME(m_lnw_mode)); save_item(NAME(m_cassette_data)); save_item(NAME(m_old_cassette_val)); save_item(NAME(m_cols)); save_item(NAME(m_timeout)); m_reg_load=1; m_cassette_data_timer = timer_alloc(FUNC(lnw80_state::cassette_data_callback), this); m_cassette_data_timer->adjust( attotime::zero, 0, attotime::from_hz(11025) ); } void lnw80_state::machine_reset() { m_cpl = 0; m_cols = 0xff; m_cassette_data = false; const u16 s_bauds[8]={ 110, 300, 600, 1200, 2400, 4800, 9600, 19200 }; u16 s_clock = s_bauds[m_io_baud->read()] << 4; m_uart_clock->set_unscaled_clock(s_clock); m_maincpu->set_unscaled_clock(BIT(m_io_config->read(), 6) ? (16_MHz_XTAL / 4) : (16_MHz_XTAL / 9)); // HI-LO switch m_reg_load = 1; lnw80_fe_w(0); } /* 8-bit video, 64/80 characters per line = lnw80 */ u32 lnw80_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { static const u16 rows[] = { 0, 0x200, 0x100, 0x300, 1, 0x201, 0x101, 0x301 }; u16 sy=0,ma=0; bool inv = BIT(m_lnw_mode, 0); u8 mode = BIT(m_lnw_mode, 1, 2); u8 cols = BIT(mode, 0) ? 80 : 64; u8 skip = 1; if (mode == 0) { skip = m_cpl ? 2 : 1; if (skip == 2) cols >>= 1; } if (cols != m_cols) { m_cols = cols; screen.set_visible_area(0, cols*6-1, 0, 16*12-1); } u8 bg=7,fg=0; if (inv) { bg = 0; fg = 7; } switch (mode) { case 0: // MODE 0 for (u16 y = 0; y < 16; y++) { for (u16 ra = 0; ra < 12; ra++) { u16 *p = &bitmap.pix(sy++); for (u16 x = ma; x < ma + 64; x+=skip) { u8 chr = m_p_videoram[x]; if (chr & 0x80) { u8 gfxbit = (ra & 0x0c)>>1; /* Display one line of a lores character (6 pixels) */ *p++ = BIT(chr, gfxbit) ? fg : bg; *p++ = BIT(chr, gfxbit) ? fg : bg; *p++ = BIT(chr, gfxbit) ? fg : bg; gfxbit++; *p++ = BIT(chr, gfxbit) ? fg : bg; *p++ = BIT(chr, gfxbit) ? fg : bg; *p++ = BIT(chr, gfxbit) ? fg : bg; } else { /* get pattern of pixels for that character scanline */ u8 gfx; if (ra < 8) gfx = m_p_chargen[(chr<<1) | rows[ra] ]; else gfx = 0; /* Display a scanline of a character (6 pixels) */ *p++ = BIT(gfx, 2) ? fg : bg; *p++ = BIT(gfx, 1) ? fg : bg; *p++ = BIT(gfx, 6) ? fg : bg; *p++ = BIT(gfx, 7) ? fg : bg; *p++ = BIT(gfx, 5) ? fg : bg; *p++ = BIT(gfx, 3) ? fg : bg; } } } ma+=64; } break; case 1: // MODE 1 for (u16 y = 0; y < 0x400; y+=0x40) { for (u16 ra = 0; ra < 0x3000; ra+=0x400) { u16 *p = &bitmap.pix(sy++); for (u16 x = 0; x < 0x40; x++) { u8 gfx = m_p_gfxram[ y | x | ra]; /* Display 6 pixels in normal region */ *p++ = BIT(gfx, 0) ? fg : bg; *p++ = BIT(gfx, 1) ? fg : bg; *p++ = BIT(gfx, 2) ? fg : bg; *p++ = BIT(gfx, 3) ? fg : bg; *p++ = BIT(gfx, 4) ? fg : bg; *p++ = BIT(gfx, 5) ? fg : bg; } for (u16 x = 0; x < 0x10; x++) { u8 gfx = m_p_gfxram[ 0x3000 | x | (ra & 0xc00) | ((ra & 0x3000) >> 8)]; /* Display 6 pixels in extended region */ *p++ = BIT(gfx, 0) ? fg : bg; *p++ = BIT(gfx, 1) ? fg : bg; *p++ = BIT(gfx, 2) ? fg : bg; *p++ = BIT(gfx, 3) ? fg : bg; *p++ = BIT(gfx, 4) ? fg : bg; *p++ = BIT(gfx, 5) ? fg : bg; } } } break; case 2: // MODE 2 /* it seems the text video ram can have an effect in this mode, not explained clearly, so not emulated */ for (u16 y = 0; y < 0x400; y+=0x40) { for (u16 ra = 0; ra < 0x3000; ra+=0x400) { u16 *p = &bitmap.pix(sy++); for (u16 x = 0; x < 0x40; x++) { u8 gfx = m_p_gfxram[ y | x | ra]; /* Display 6 pixels in normal region */ fg = BIT(gfx, 3, 3); *p++ = fg; *p++ = fg; *p++ = fg; fg = BIT(gfx, 0, 3); *p++ = fg; *p++ = fg; *p++ = fg; } } } break; case 3: // MODE 3 /* the manual does not explain at all how colour is determined for the extended area. Further, the background colour is not mentioned anywhere. Black is assumed. */ for (u16 y = 0; y < 0x400; y+=0x40) { for (u16 ra = 0; ra < 0x3000; ra+=0x400) { u16 *p = &bitmap.pix(sy++); for (u16 x = 0; x < 0x40; x++) { u8 gfx = m_p_gfxram[ y | x | ra]; fg = BIT(m_p_videoram[ x | y ], 3, 3); /* Display 6 pixels in normal region */ *p++ = BIT(gfx, 0) ? fg : bg; *p++ = BIT(gfx, 1) ? fg : bg; *p++ = BIT(gfx, 2) ? fg : bg; fg = BIT(m_p_videoram[ 0x3c00 | x | y ], 0, 3); *p++ = BIT(gfx, 3) ? fg : bg; *p++ = BIT(gfx, 4) ? fg : bg; *p++ = BIT(gfx, 5) ? fg : bg; } for (u16 x = 0; x < 0x10; x++) { u8 gfx = m_p_gfxram[ 0x3000 | x | (ra & 0xc00) | ((ra & 0x3000) >> 8)]; fg = BIT(m_p_gfxram[ 0x3c00 | x | y ], 3, 3); /* Display 6 pixels in extended region */ *p++ = BIT(gfx, 0) ? fg : bg; *p++ = BIT(gfx, 1) ? fg : bg; *p++ = BIT(gfx, 2) ? fg : bg; fg = BIT(m_p_gfxram[ 0x3c00 | x | y ], 0, 3); *p++ = BIT(gfx, 3) ? fg : bg; *p++ = BIT(gfx, 4) ? fg : bg; *p++ = BIT(gfx, 5) ? fg : bg; } } } break; } return 0; } /*************************************************************************** Palettes ***************************************************************************/ /* Levels are unknown - guessing */ static constexpr rgb_t lnw80_pens[] = { { 220, 220, 220 }, // white { 0, 175, 0 }, // green { 200, 200, 0 }, // yellow { 255, 0, 0 }, // red { 255, 0, 255 }, // magenta { 0, 0, 175 }, // blue { 0, 255, 255 }, // cyan { 0, 0, 0 } // black }; void lnw80_state::lnw80_palette(palette_device &palette) const { palette.set_pen_colors(0, lnw80_pens); } /**************************** F4 CHARACTER DISPLAYER ***********************************************************/ static const gfx_layout lnw80_charlayout = { 8, 8, /* 8 x 8 characters */ 128, /* 128 characters */ 1, /* 1 bits per pixel */ { 0 }, /* no bitplanes */ /* x offsets */ { 7, 5, 6, 1, 0, 2, 4, 3 }, /* y offsets */ { 0*8, 512*8, 256*8, 768*8, 1*8, 513*8, 257*8, 769*8 }, 8*2 /* every char takes 8 bytes */ }; static GFXDECODE_START(gfx_lnw80) GFXDECODE_ENTRY( "chargen", 0, lnw80_charlayout, 0, 4 ) GFXDECODE_END void lnw80_state::floppy_formats(format_registration &fr) { fr.add(FLOPPY_JV1_FORMAT); fr.add(FLOPPY_TD0_FORMAT); } static void lnw80_floppies(device_slot_interface &device) { device.option_add("sssd", FLOPPY_525_QD); // QD allows the 80-track boot disks to work. } void lnw80_state::lnw80(machine_config &config) { /* basic machine hardware */ Z80(config, m_maincpu, 16_MHz_XTAL / 9); m_maincpu->set_addrmap(AS_PROGRAM, &lnw80_state::lnw80_mem); m_maincpu->set_addrmap(AS_IO, &lnw80_state::lnw80_io); m_maincpu->halt_cb().set("nmigate", FUNC(input_merger_device::in_w<1>)); input_merger_device &nmigate(INPUT_MERGER_ANY_HIGH(config, "nmigate")); nmigate.output_handler().set_inputline(m_maincpu, INPUT_LINE_NMI); // TODO: also causes SYSRES on expansion bus /* video hardware */ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); // LNW80 Theory of Operations gives H and V periods as 15.750kHz and 59.66Hz, probably due to rounding the calculated ~15.7468kHz to 4 figures screen.set_raw(3.579545_MHz_XTAL * 3, 682, 0, 480, 264, 0, 192); // 10.738MHz generated by tank circuit (top left of page 2 of schematics) screen.set_screen_update(FUNC(lnw80_state::screen_update)); screen.set_palette("palette"); PALETTE(config, "palette", FUNC(lnw80_state::lnw80_palette), 8); GFXDECODE(config, "gfxdecode", "palette", gfx_lnw80); /* sound hardware */ SPEAKER(config, "mono").front_center(); SPEAKER_SOUND(config, "speaker").add_route(ALL_OUTPUTS, "mono", 0.50); /* devices */ CASSETTE(config, m_cassette); m_cassette->set_formats(trs80l2_cassette_formats); m_cassette->set_default_state(CASSETTE_PLAY); m_cassette->add_route(ALL_OUTPUTS, "mono", 0.05); m_cassette->set_interface("trs80_cass"); quickload_image_device &quickload(QUICKLOAD(config, "quickload", "cmd", attotime::from_seconds(1))); quickload.set_load_callback(FUNC(lnw80_state::quickload_cb)); quickload.set_interface("trs80_quik"); FD1771(config, m_fdc, 4_MHz_XTAL / 4); m_fdc->intrq_wr_callback().set(FUNC(lnw80_state::intrq_w)); FLOPPY_CONNECTOR(config, m_floppy[0], lnw80_floppies, "sssd", lnw80_state::floppy_formats).enable_sound(true); FLOPPY_CONNECTOR(config, m_floppy[1], lnw80_floppies, "sssd", lnw80_state::floppy_formats).enable_sound(true); FLOPPY_CONNECTOR(config, m_floppy[2], lnw80_floppies, nullptr, lnw80_state::floppy_formats).enable_sound(true); FLOPPY_CONNECTOR(config, m_floppy[3], lnw80_floppies, nullptr, lnw80_state::floppy_formats).enable_sound(true); CENTRONICS(config, m_centronics, centronics_devices, "printer"); m_centronics->busy_handler().set(m_cent_status_in, FUNC(input_buffer_device::write_bit7)); m_centronics->perror_handler().set(m_cent_status_in, FUNC(input_buffer_device::write_bit6)); m_centronics->select_handler().set(m_cent_status_in, FUNC(input_buffer_device::write_bit5)); m_centronics->fault_handler().set(m_cent_status_in, FUNC(input_buffer_device::write_bit4)); INPUT_BUFFER(config, m_cent_status_in); OUTPUT_LATCH(config, m_cent_data_out); m_centronics->set_output_latch(*m_cent_data_out); CLOCK(config, m_uart_clock, 19200 * 16); m_uart_clock->signal_handler().set(m_uart, FUNC(ay31015_device::write_rcp)); m_uart_clock->signal_handler().append(m_uart, FUNC(ay31015_device::write_tcp)); AY31015(config, m_uart); m_uart->read_si_callback().set("rs232", FUNC(rs232_port_device::rxd_r)); m_uart->write_so_callback().set("rs232", FUNC(rs232_port_device::write_txd)); //MCFG_AY31015_WRITE_DAV_CB(WRITELINE( , , )) m_uart->set_auto_rdav(true); RS232_PORT(config, "rs232", default_rs232_devices, nullptr); SOFTWARE_LIST(config, "cass_list").set_original("trs80_cass").set_filter("1"); // L SOFTWARE_LIST(config, "quik_list").set_original("trs80_quik").set_filter("1"); // L SOFTWARE_LIST(config, "flop_list").set_original("trs80_flop").set_filter("1"); // L } /*************************************************************************** Game driver(s) ***************************************************************************/ ROM_START(lnw80) ROM_REGION(0x3000, "maincpu", 0) ROM_LOAD("lnw_a.u78", 0x0000, 0x0800, CRC(e09f7e91) SHA1(cd28e72efcfebde6cf1c7dbec4a4880a69e683da) ) ROM_LOAD("lnw_a1.u75", 0x0800, 0x0800, CRC(ac297d99) SHA1(ccf31d3f9d02c3b68a0ee3be4984424df0e83ab0) ) ROM_LOAD("lnw_b.u79", 0x1000, 0x0800, CRC(c4303568) SHA1(13e3d81c6f0de0e93956fa58c465b5368ea51682) ) ROM_LOAD("lnw_b1.u76", 0x1800, 0x0800, CRC(3a5ea239) SHA1(8c489670977892d7f2bfb098f5df0b4dfa8fbba6) ) ROM_LOAD("lnw_c.u80", 0x2000, 0x0800, CRC(2ba025d7) SHA1(232efbe23c3f5c2c6655466ebc0a51cf3697be9b) ) ROM_LOAD("lnw_c1.u77", 0x2800, 0x0800, CRC(ed547445) SHA1(20102de89a3ee4a65366bc2d62be94da984a156b) ) ROM_REGION(0x0800, "chargen", 0) ROM_LOAD("lnw_chr.u100", 0x0000, 0x0800, CRC(c89b27df) SHA1(be2a009a07e4378d070002a558705e9a0de59389) ) ROM_REGION(0x0020, "proms", 0) ROM_LOAD_OPTIONAL("lnw_ntsc.u130", 0x0000, 0x0020, CRC(b990a207) SHA1(1a1cc3150cbfed76b1c88c0d561f9bee954f3234) ) ROM_END } // anonymous namespace // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1981, lnw80, 0, trs80l2, lnw80, lnw80, lnw80_state, empty_init, "LNW Research", "LNW-80", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE )