diff options
Diffstat (limited to 'src/mame/drivers/decwritr.cpp')
-rw-r--r-- | src/mame/drivers/decwritr.cpp | 485 |
1 files changed, 0 insertions, 485 deletions
diff --git a/src/mame/drivers/decwritr.cpp b/src/mame/drivers/decwritr.cpp deleted file mode 100644 index bcd83f09b89..00000000000 --- a/src/mame/drivers/decwritr.cpp +++ /dev/null @@ -1,485 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Jonathan Gevaryahu -/************************************************************************* - - decwritr.c - Digital Equipment Corporation - DECwriter III (LA120) Teletype/Teleprinter, 1978 - -**************************************************************************/ - -// tech manual: http://manx.classiccmp.org/mirror/vt100.net/docs/la120-tm/la120tm1.pdf - -#include "emu.h" -#include "cpu/i8085/i8085.h" -#include "machine/74259.h" -#include "machine/er1400.h" -#include "machine/i8251.h" -#include "sound/beep.h" -#include "render.h" -#include "speaker.h" - - -#define KBD_VERBOSE 1 -#define LED_VERBOSE 0 -#define DC305_VERBOSE 0 - -//************************************************************************** -// DRIVER STATE -//************************************************************************** - -class decwriter_state : public driver_device -{ -public: - // constructor - decwriter_state(const machine_config &mconfig, device_type type, const char *tag) : - driver_device(mconfig, type, tag), - m_maincpu(*this, "maincpu"), - m_speaker(*this, "beeper"), - m_usart(*this, "usart"), - m_nvm(*this, "nvm"), - m_ledlatch(*this, "ledlatch") - { - } - - void la120(machine_config &config); -private: - uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) - { - bitmap.fill(rgb_t::black(), cliprect); - return 0; - } - DECLARE_READ8_MEMBER(la120_KBD_r); - DECLARE_WRITE8_MEMBER(la120_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); - - void la120_io(address_map &map); - void la120_mem(address_map &map); - - virtual void machine_start() override; - //virtual void machine_reset(); - - required_device<cpu_device> m_maincpu; - required_device<beep_device> m_speaker; - required_device<i8251_device> m_usart; - required_device<er1400_device> m_nvm; - required_device<ls259_device> m_ledlatch; - - ioport_port* m_col_array[16]; - uint8_t m_led_7seg_counter; - uint8_t m_led_7seg[4]; -}; - -READ8_MEMBER( decwriter_state::la120_KBD_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) - * - * d7 d6 d5 d4 d3 d2 d1 d0 - * \--\--\--\--\--\--\--\-- read from rows - */ - uint8_t code = 0; - if (offset&0x8) code |= m_col_array[offset&0x7]->read(); - if (offset&0x10) code |= m_col_array[(offset&0x7)+8]->read(); - if (KBD_VERBOSE) - logerror("Keyboard column %X read, returning %02X\n", offset&0xF, code); - return code; -} - -WRITE8_MEMBER( decwriter_state::la120_LED_w ) -{ - /* for writing 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 0 * * * 0 turn OFF LED # <a3:a1> and clear 7seg counter - * 0 0 1 1 x x x x x x x 0 * * * 1 turn ON LED # <a3:a1> and clear 7seg counter - * 0 0 1 1 x x x x x x x 1 * * * * display a digit <a3:a0> in the digit pointed to by 7seg counter and increment counter - * data bus is UNUSED. - */ - if (!(offset&0x10)) // we're updating an led state - { - if (LED_VERBOSE) - logerror("Updated LED status array: LED #%d is now %d\n", ((offset&0xe)>>1), (offset&1)); - m_ledlatch->write_bit((~offset & 0xe) >> 1, !BIT(offset, 0)); - m_led_7seg_counter = 0; - } - else // we're updating the 7segment display - { - m_led_7seg_counter++; - m_led_7seg_counter &= 0xF; - if (LED_VERBOSE) - logerror("Updated 7seg display: displaying a digit of %d in position %d\n", (offset&0xF)^0xF, m_led_7seg_counter-1); - if ((m_led_7seg_counter >= 1) && (m_led_7seg_counter <= 4)) - { - m_led_7seg[m_led_7seg_counter-1] = (offset&0xF)^0xF; - } - } - popmessage("LEDs: %c %c %c %c : %s %s %s %s %s %s %s %s\n", - m_led_7seg[3]+0x30, m_led_7seg[2]+0x30, m_led_7seg[1]+0x30, m_led_7seg[0]+0x30, - (!m_ledlatch->q0_r())?"ON LINE":"-------", - (!m_ledlatch->q1_r())?"LOCAL":"-----", - (!m_ledlatch->q2_r())?"ALT CHR SET":"-----------", - (!m_ledlatch->q3_r())?"<LED4>":"-----", - (!m_ledlatch->q4_r())?"CTS":"---", - (!m_ledlatch->q5_r())?"DSR":"---", - (!m_ledlatch->q6_r())?"SET-UP":"------", - (!m_ledlatch->q7_r())?"PAPER OUT":"---------" ); -} - -/* control lines: - 3 2 1 - 0 0 0 Standby - 0 0 1 Read - 0 1 0 Erase - 0 1 1 Write - 1 0 0 <unused> - 1 0 1 Shift data out - 1 1 0 Accept address - 1 1 1 Accept data - */ -READ8_MEMBER( decwriter_state::la120_NVR_r ) -{ - // one wait state inserted - if (!machine().side_effects_disabled()) - m_maincpu->adjust_icount(-1); - - return (!m_nvm->data_r() << 7) | 0x7f; -} - -WRITE8_MEMBER( decwriter_state::la120_NVR_w ) -{ - // one wait state inserted - if (!machine().side_effects_disabled()) - m_maincpu->adjust_icount(-1); - - // ER1400 has negative logic, but 7406 inverters are used - m_nvm->c3_w(BIT(offset, 10)); - m_nvm->c2_w(BIT(offset, 9)); - m_nvm->c1_w(BIT(offset, 8)); - - // FIXME: clock line shouldn't be inverted relative to C1-C3, but accesses only seems to work this way - m_nvm->clock_w(!BIT(offset, 0)); - - // C2 is used to disable pullup on data line - m_nvm->data_w(!BIT(offset, 9) ? 0 : !BIT(data, 7)); -} - -/* todo: fully reverse engineer DC305 ASIC */ -/* read registers: all 4 registers read the same set of 8 bits, but what register is being read may be selectable by writing - Tech manual implies this register is an 8-bit position counter of where the carriage head currently is located. - 0 = 1 = 2 = 3 - data bits: - 76543210 - |||||||\- ? - ||||||\-- ? - |||||\--- ? - ||||\---- ? - |||\----- ? - ||\------ ? - |\------- ? - \-------- ? - */ -READ8_MEMBER( decwriter_state::la120_DC305_r ) -{ - // one wait state inserted - if (!machine().side_effects_disabled()) - m_maincpu->adjust_icount(-1); - - uint8_t data = 0x00; - if (DC305_VERBOSE) - logerror("DC305 Read from offset %01x, returning %02X\n", offset, data); - return data; -} -/* write registers: - 0 = ? (a bunch of data written here on start, likely motor control and setup bits) - 1 = ? (one byte written here, possibly voltage control, 0x00 or could be dot fifo write?) - 2 = ? - 3 = ? - there are at least two bits in here to enable the 2.5ms tick interrupt(rst3) and the dot interrupt/linefeed(rtc expired) interrupt(rst5) - the dot fifo is 4 bytes long, dot int fires when it is half empty - at least 3 bits control the speaker/buzzer which can be on or off, at least two volume levels, and at least two frequencies, 400hz or 2400hz - two quadrature lines from the head servomotor connect here to allow the dc305 to determine motor position; one pulses when the motor turns clockwise and one when it turns counterclockwise. the head stop is found when the pulses stop, which firmware uses to find the zero position. - */ -WRITE8_MEMBER( decwriter_state::la120_DC305_w ) -{ - // one wait state inserted - if (!machine().side_effects_disabled()) - m_maincpu->adjust_icount(-1); - - if (DC305_VERBOSE) - logerror("DC305 Write of %02X to offset %01X\n", data, offset); -} - -/* - * 8080 address map (x = ignored; * = selects address within this range) - a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 a0 - 0 0 0 0 * * * * * * * * * * * * R ROMS0 (e6 first half OR e6,e8) - 0 0 0 1 * * * * * * * * * * * * R ROMS1 (e6 second half OR e12,e17) - 0 0 1 0 0 * * * * * * * * * * * R ROMS2 (e4) - 0 0 1 0 1 * * * * * * * * * * * R ROMS2 (open bus) - 0 0 1 1 x x x x x x x * * * * * RW KBD(R)/LED(W) - 0 1 0 0 x x * * * * * * * * * * RW RAM0 (e7,e13) - 0 1 0 1 x x * * * * * * * * * * RW RAM1 (e9,e18) - 0 1 1 0 x * * * x x x x x x x * RW NVM (ER1400,e39) - 0 1 1 1 x x x x x x x x x x * * RW PTR (DC305 ASIC,e25) - 1 * * * * * * * * * * * * * * * Expansion space (open bus) - */ -void decwriter_state::la120_mem(address_map &map) -{ - map.unmap_value_high(); - map(0x0000, 0x27ff).rom(); - map(0x3000, 0x301f).rw(FUNC(decwriter_state::la120_KBD_r), FUNC(decwriter_state::la120_LED_w)).mirror(0xFE0); // keyboard read, write to status and 7seg LEDS - map(0x4000, 0x43ff).mirror(0x0c00).ram(); // 1k 'low ram' - map(0x5000, 0x53ff).mirror(0x0c00).ram(); // 1k 'high ram' - map(0x6000, 0x67ff) /*.mirror(0x08fe)*/ .mirror(0x800).rw(FUNC(decwriter_state::la120_NVR_r), FUNC(decwriter_state::la120_NVR_w)); // ER1400 EAROM; a10,9,8 are c3,2,1, a0 is clk, data i/o on d7, d0 always reads as 0 (there may have once been a second er1400 with data i/o on d0, sharing same address controls as the d7 one, not populated on shipping boards), d1-d6 read open bus - map(0x7000, 0x7003).mirror(0x0ffc).rw(FUNC(decwriter_state::la120_DC305_r), FUNC(decwriter_state::la120_DC305_w)); // DC305 printer controller ASIC stuff; since this can generate interrupts (dot interrupt, lf interrupt, 2.5ms interrupt) this needs to be split to its own device. - // 8000-ffff is reserved for expansion (i.e. unused, open bus) -} - -/* - * 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) - */ -void decwriter_state::la120_io(address_map &map) -{ - map.unmap_value_high(); - map(0x00, 0x01).mirror(0x7C).rw(m_usart, FUNC(i8251_device::read), FUNC(i8251_device::write)); // 8251 Status/Control - //map(0x02, 0x02).mirror(0x7D); // other io ports, serial loopback etc, see table 4-9 in TM - // 0x80-0xff are reserved for expansion (i.e. unused, open bus) - map.global_mask(0xff); -} - -/* 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) // This key has a physical 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() -{ - 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); - } - m_led_7seg_counter = 0; - m_led_7seg[0] = m_led_7seg[1] = m_led_7seg[2] = m_led_7seg[3] = 0xF; -} - -/* -void decwriter_state::machine_reset() -{ -} -*/ - -//************************************************************************** -// MACHINE DRIVERS -//************************************************************************** - -void decwriter_state::la120(machine_config &config) -{ - I8080A(config, m_maincpu, XTAL(18'000'000) / 9); // 18Mhz xtal on schematics, using an i8224 clock divider/reset sanitizer IC - m_maincpu->set_addrmap(AS_PROGRAM, &decwriter_state::la120_mem); - m_maincpu->set_addrmap(AS_IO, &decwriter_state::la120_io); - //m_maincpu->set_irq_acknowledge_callback("prtlsi", FUNC(dc305_device::inta_cb)); - - /* 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. - screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); - screen.set_screen_update(FUNC(decwriter_state::screen_update)); - screen.set_size(640,480); - screen.set_visarea_full(); - screen.set_refresh_hz(30); - - //dc305_device &prtlsi(DC305(config, "prtlsi", XTAL(18'000'000) / 9)); - //prtlsi.out_rxc_cb().set("usart", FUNC(i8251_device, write_rxc)); - //prtlsi.out_txc_cb().set("usart", FUNC(i8251_device, write_txc)); - //prtlsi.out_int_cb().set("mainint", FUNC(input_merger_device::in_w<0>)); - - LS259(config, m_ledlatch); // E2 on keyboard - m_ledlatch->q_out_cb<0>().set_output("led1").invert(); // ON LINE - m_ledlatch->q_out_cb<1>().set_output("led2").invert(); // LOCAL - m_ledlatch->q_out_cb<2>().set_output("led3").invert(); // ALT CHAR SET - m_ledlatch->q_out_cb<3>().set_output("led4").invert(); - m_ledlatch->q_out_cb<4>().set_output("led5").invert(); // CTS - m_ledlatch->q_out_cb<5>().set_output("led6").invert(); // DSR - m_ledlatch->q_out_cb<6>().set_output("led7").invert(); // SETUP - m_ledlatch->q_out_cb<7>().set_output("led8").invert(); // PAPER OUT - - //config.set_default_layout(layout_la120); - - /* audio hardware */ - SPEAKER(config, "mono").front_center(); - BEEP(config, m_speaker, 786).add_route(ALL_OUTPUTS, "mono", 0.50); // TODO: LA120 speaker is controlled by asic; VT100 has: 7.945us per serial clock = ~125865.324hz, / 160 clocks per char = ~ 786 hz - - /* i8251 */ - I8251(config, "usart", XTAL(18'000'000) / 9); - /* - usart.txd_handler().set(RS232_TAG, FUNC(rs232_port_device::write_txd)); - usart.dtr_handler().set(RS232_TAG, FUNC(rs232_port_device::write_dtr)); - usart.rts_handler().set(RS232_TAG, FUNC(rs232_port_device::write_rts)); - usart.rxrdy_handler().set("mainint", FUNC(input_merger_device::in_w<1>)); - - INPUT_MERGER_ANY_HIGH(config, "mainint").output_handler().set_inputline(m_maincpu, 0); - - rs232_port_device &rs232(RS232_PORT(config, RS232_TAG, default_rs232_devices, nullptr)); - rs232.rxd_handler().set("usart", FUNC(i8251_device::write_rxd)); - rs232.dsr_handler().set("usart", FUNC(i8251_device::write_dsr)); - */ - - ER1400(config, m_nvm); -} - - - -//************************************************************************** -// ROM DEFINITIONS -//************************************************************************** - -ROM_START( la120 ) - ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) - // later romset, with 23-003e2.e6, 23-004e2.e8, 23-005e2.e12, 23-006e2.e17 replaced by one rom, 23-038e4.e6 which may be a concatenation of the old roms, unclear. - ROM_LOAD( "23-038e4-00.e6", 0x0000, 0x2000, CRC(cad4eb09) SHA1(d5db117da363d36817476f906251ea4ee1cb14b8)) - ROM_LOAD( "23-007e2-00.e4", 0x2000, 0x0800, CRC(41eaebf1) SHA1(c7d05417b24b853280d1636776d399a0aea34720)) // used by both earlier and later romset - // 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 - - -//************************************************************************** -// DRIVERS -//************************************************************************** -/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ -COMP( 1978, la120, 0, 0, la120, la120, decwriter_state, empty_init, "Digital Equipment Corporation", "DECwriter III (LA120)", MACHINE_IS_SKELETON ) |