diff options
author | 2015-09-21 02:14:04 -0400 | |
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committer | 2015-09-21 02:14:04 -0400 | |
commit | 66342ace0cdaaa461cee47d5c723aca4c6f5dee9 (patch) | |
tree | 631bb8ed4979d6da353d9001e9994a6bda25c81e /src/mess/drivers | |
parent | 7a1747b07991cfe5a84498639ee27d2340487891 (diff) |
DEC LA120: Keyboard matrix is done, keyboard reading should work in theory. UART partly attached. Corrected cpu XTAL. [Lord Nightmare]
Diffstat (limited to 'src/mess/drivers')
-rw-r--r-- | src/mess/drivers/decwritr.c | 273 |
1 files changed, 248 insertions, 25 deletions
diff --git a/src/mess/drivers/decwritr.c b/src/mess/drivers/decwritr.c index 04ff97c1a2e..199bdf69b63 100644 --- a/src/mess/drivers/decwritr.c +++ b/src/mess/drivers/decwritr.c @@ -10,8 +10,9 @@ #include "emu.h" #include "render.h" -#include "ui/selgame.h" #include "cpu/i8085/i8085.h" +#include "machine/i8251.h" +#include "sound/beep.h" //************************************************************************** @@ -24,62 +25,283 @@ public: // constructor decwriter_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), - m_maincpu(*this, "maincpu") + m_maincpu(*this, "maincpu"), + m_speaker(*this, "beeper"), + m_uart(*this, "i8251") { } -/* - virtual void machine_start() - { - // force the UI to show the game select screen - ui_menu_select_game::force_game_select(machine(), &machine().render().ui_container()); - } -*/ + required_device<cpu_device> m_maincpu; + required_device<beep_device> m_speaker; + required_device<i8251_device> m_uart; + //required_device<generic_terminal_device> m_terminal; UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { bitmap.fill(rgb_t::black); return 0; } + DECLARE_READ8_MEMBER(la120_KBD_LED_r); + DECLARE_WRITE8_MEMBER(la120_KBD_LED_w); + DECLARE_READ8_MEMBER(la120_NVR_r); + DECLARE_WRITE8_MEMBER(la120_NVR_w); + DECLARE_READ8_MEMBER(la120_DC305_r); + DECLARE_WRITE8_MEMBER(la120_DC305_w); private: - required_device<cpu_device> m_maincpu; - //required_device<generic_terminal_device> m_terminal; + virtual void machine_start(); + //virtual void machine_reset(); + ioport_port* m_col_array[16]; }; +READ8_MEMBER( decwriter_state::la120_KBD_LED_r ) +{ + /* for reading the keyboard array, addr bits 5-11 are ignored. + * a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 a0 + * 0 0 1 1 x x x x x x x * * * * * + * | | \---\---\--- column select + * | \--------------- kbd_banksel0 + * \------------------- kbd_banksel1 + * if both banks are selected, the resulting row read is a binary OR of both (LA120-TM1, page 4-5) + */ + UINT8 code = 0; + if (offset&0x8) code |= m_col_array[offset&0x7]->read(); + if (offset&0x10) code |= m_col_array[(offset&0x7)+8]->read(); +#ifdef KBD_VERBOSE + logerror("Keyboard column %X read, returning %02X\n", offset&0xF, code); +#endif + return code; +} +WRITE8_MEMBER( decwriter_state::la120_KBD_LED_w ) +{ +} +READ8_MEMBER( decwriter_state::la120_NVR_r ) +{ + return 0xFF; +} +WRITE8_MEMBER( decwriter_state::la120_NVR_w ) +{ +} +READ8_MEMBER( decwriter_state::la120_DC305_r ) +{ + return 0xFF; +} +WRITE8_MEMBER( decwriter_state::la120_DC305_w ) +{ +} + static ADDRESS_MAP_START(la120_mem, AS_PROGRAM, 8, decwriter_state) ADDRESS_MAP_UNMAP_HIGH AM_RANGE( 0x0000, 0x2fff ) AM_ROM - //AM_RANGE( 0x3000, 0x3fff ) // keyboard + AM_RANGE( 0x3000, 0x3fff ) AM_READWRITE(la120_KBD_LED_r, la120_KBD_LED_w) // keyboard drive/readback and status/7seg LEDS AM_RANGE( 0x4000, 0x43ff ) AM_MIRROR(0x0c00) AM_RAM // 1k 'low ram' AM_RANGE( 0x5000, 0x53ff ) AM_MIRROR(0x0c00) AM_RAM // 1k 'high ram' - AM_RANGE( 0x6000, 0x6fff ) AM_RAM // ER1400 EAROM - AM_RANGE( 0x7000, 0x7fff ) // DC305 printer controller ASIC stuff - // 8000-ffff is reserved for expansion (i.e. unused, open bus) + AM_RANGE( 0x6000, 0x6fff ) AM_MIRROR(0x08fe) AM_READWRITE(la120_NVR_r, la120_NVR_w) // ER1400 EAROM + AM_RANGE( 0x7000, 0x7003 ) AM_MIRROR(0x0ffc) AM_READWRITE(la120_DC305_r, la120_DC305_w) // DC305 printer controller ASIC stuff + // 8000-ffff is reserved for expansion (i.e. unused, open bus); since this can generate interrupts this needs to be split to its own device. ADDRESS_MAP_END +/* + * 8080 IO address map (x = ignored; * = selects address within this range) + * (a15 to a8 are latched the same value as a7-a0 on the 8080 and 8085) + a7 a6 a5 a4 a3 a2 a1 a0 + 0 x x x x x 0 0 RW 8251 Data + 0 x x x x x 0 1 RW 8251 Status/Control + 0 x x x x x 1 x RW Flags Read/Write + 1 x x x x x x x RW Expansion (Open bus) + */ static ADDRESS_MAP_START(la120_io, AS_IO, 8, decwriter_state) ADDRESS_MAP_UNMAP_HIGH - //AM_RANGE(0x00, 0x00) AM_MIRROR(0x7D) // 8251 usart + AM_RANGE(0x00, 0x00) AM_MIRROR(0x7C) AM_DEVREADWRITE("i8251", i8251_device, data_r, data_w) // 8251 Data + AM_RANGE(0x01, 0x01) AM_MIRROR(0x7C) AM_DEVREADWRITE("i8251", i8251_device, status_r, control_w) // 8251 Status/Control //AM_RANGE(0x02, 0x02) AM_MIRROR(0x7D) // other io ports // 0x80-0xff are reserved for expansion (i.e. unused, open bus) ADDRESS_MAP_GLOBAL_MASK(0xff) ADDRESS_MAP_END +/* Input ports */ +static INPUT_PORTS_START( la120 ) + PORT_START("COL0") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num .") PORT_CODE(KEYCODE_DEL_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("PF4") PORT_CODE(KEYCODE_F4) + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Local LF") PORT_CODE(KEYCODE_F12) + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Break") PORT_CODE(KEYCODE_F6) + PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') + PORT_START("COL1") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("PF3") PORT_CODE(KEYCODE_F3) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Local FF") PORT_CODE(KEYCODE_F11) + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Delete") PORT_CODE(KEYCODE_DEL) PORT_CHAR(127) + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) + PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) // this is actually the cover open interlock sensor + PORT_START("COL2") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("PF2") PORT_CODE(KEYCODE_F2) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("HERE IS") PORT_CODE(KEYCODE_F10) + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("(alternate) Opt LF") PORT_CODE(KEYCODE_RALT) + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("` ~") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~') + PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) // this is actually the paper out interlock sensor + PORT_START("COL3") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("PF1") PORT_CODE(KEYCODE_F1) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("LF") PORT_CODE(KEYCODE_LALT) PORT_CHAR(10) + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("LINE LOCAL") PORT_CODE(KEYCODE_F9) + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("] }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("= +") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') + PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) + PORT_START("COL4") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num -") PORT_CODE(KEYCODE_MINUS_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num ,") PORT_CODE(KEYCODE_PLUS_PAD) + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("' \"") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("[ {") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("- _") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_') + PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_TOGGLE PORT_NAME("Caps lock") PORT_CODE(KEYCODE_CAPSLOCK) // TODO: does the physical switch toggle? + PORT_START("COL5") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 0") PORT_CODE(KEYCODE_0_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("; :") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("0 )") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') + PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2) + PORT_START("COL6") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 9") PORT_CODE(KEYCODE_9_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("9 (") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(') + PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) + PORT_START("COL7") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 8") PORT_CODE(KEYCODE_8_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("8 *") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*') + PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Set Up") PORT_CODE(KEYCODE_F5) + PORT_START("COL8") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 7") PORT_CODE(KEYCODE_7_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("7 &") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') + PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_START("COL9") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 6") PORT_CODE(KEYCODE_6_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("6 ^") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^') + PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_START("COLA") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 5") PORT_CODE(KEYCODE_5_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') + PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_START("COLB") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 4") PORT_CODE(KEYCODE_4_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') + PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_START("COLC") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 3") PORT_CODE(KEYCODE_3_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') + PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_START("COLD") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 2") PORT_CODE(KEYCODE_2_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("2 @") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') + PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_START("COLE") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 1") PORT_CODE(KEYCODE_1_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') + PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_START("COLF") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num Enter") PORT_CODE(KEYCODE_ENTER_PAD) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_UNUSED) // this is actually the RO flag + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("View") PORT_CODE(KEYCODE_LWIN) + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Tab") PORT_CODE(KEYCODE_TAB) PORT_CHAR(9) + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Esc") PORT_CODE(KEYCODE_ESC) PORT_CHAR(27) + PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED) +INPUT_PORTS_END + +void decwriter_state::machine_start() +{ + m_speaker->set_frequency(786); // TODO: LA120 speaker is controlled by asic; VT100 has: 7.945us per serial clock = ~125865.324hz, / 160 clocks per char = ~ 786 hz +#if 0 + output_set_value("online_led",1); + output_set_value("local_led", 0); + output_set_value("noscroll_led",1); + output_set_value("basic_led", 1); + output_set_value("hardcopy_led", 1); + output_set_value("l1_led", 1); + output_set_value("l2_led", 1); +#endif + char kbdcol[8]; + // look up all 16 tags 'the slow way' but only once on reset + for (int i = 0; i < 16; i++) + { + sprintf(kbdcol,"COL%X", i); + m_col_array[i] = ioport(kbdcol); + } +} + + //************************************************************************** // MACHINE DRIVERS //************************************************************************** static MACHINE_CONFIG_START( la120, decwriter_state ) - MCFG_CPU_ADD("maincpu",I8080, XTAL_24_8832MHz / 9) + MCFG_CPU_ADD("maincpu",I8080, XTAL_18MHz / 9) // 18Mhz xtal on schematics, using an i8224 clock divider/reset sanitizer IC MCFG_CPU_PROGRAM_MAP(la120_mem) MCFG_CPU_IO_MAP(la120_io) - - // video hardware - //TODO: no actual screen! just paper. + + /* video hardware */ + //TODO: no actual screen! has 8 leds above the keyboard (similar to vt100/vk100) and has 4 7segment leds for showing an error code. MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_UPDATE_DRIVER(decwriter_state, screen_update) MCFG_SCREEN_SIZE(640,480) MCFG_SCREEN_VISIBLE_AREA(0,639, 0,479) MCFG_SCREEN_REFRESH_RATE(30) + + //MCFG_DEFAULT_LAYOUT( layout_la120 ) + + /* audio hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_SOUND_ADD("beeper", BEEP, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) + + /* i8251 */ + MCFG_DEVICE_ADD("i8251", I8251, 0) + /* + MCFG_I8251_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd)) + MCFG_I8251_DTR_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_dtr)) + MCFG_I8251_RTS_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_rts)) + + MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, NULL) + MCFG_RS232_RXD_HANDLER(DEVWRITELINE("i8251", i8251_device, write_rxd)) + MCFG_RS232_DSR_HANDLER(DEVWRITELINE("i8251", i8251_device, write_dsr)) + + MCFG_DEVICE_ADD(COM5016T_TAG, COM8116, XTAL_5_0688MHz) + MCFG_COM8116_FR_HANDLER(DEVWRITELINE("i8251", i8251_device, write_rxc)) + MCFG_COM8116_FT_HANDLER(DEVWRITELINE("i8251", i8251_device, write_txc)) + */ MACHINE_CONFIG_END @@ -90,15 +312,16 @@ MACHINE_CONFIG_END ROM_START( la120 ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) - // later romset, with 23-003e2, 23-004e2, 23-005e2, 23-006e2 replaced by one rom, 23-038e4 + // later romset, with 23-003e2.e6, 23-004e2.e8, 23-005e2.e12, 23-006e2.e17 replaced by one rom, 23-038e4.e6 ROM_LOAD( "23-038e4-00.e6", 0x0000, 0x2000, CRC(12b80c00) SHA1(35875a85c5037454ac4a82ee19ea9f0337ad0dbe)) ROM_LOAD( "23-007e2-00.e4", 0x2000, 0x0800, CRC(41eaebf1) SHA1(c7d05417b24b853280d1636776d399a0aea34720)) // used by both earlier and later romset - // there is an optional european and APL rom which goes from 2800-2fff, undumped. + // there is an optional 3 roms, european and APL (and BOTH) rom which goes from 2000-2fff in e4, all undumped. + // there is another romset used on the Bell Teleprinter 1000 (Model LAS12) which I believe is 23-004e4.e6 and 23-086e2.e4 ROM_END //************************************************************************** -// GAME DRIVERS +// DRIVERS //************************************************************************** -/* YEAR NAME PARENT COMPAT MACHINE STATE INPUT INIT COMPANY FULLNAME FLAGS */ -GAME( 1978, la120, 0, la120, 0, driver_device, 0, 0, "Digital Equipment Corporation", "DECwriter III (LA120)", MACHINE_NO_SOUND | MACHINE_IS_SKELETON | MACHINE_NOT_WORKING ) +/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ +COMP( 1978, la120, 0, 0, la120, la120, driver_device, 0, "Digital Equipment Corporation", "DECwriter III (LA120)", MACHINE_NO_SOUND | MACHINE_IS_SKELETON | MACHINE_NOT_WORKING ) |