mirror of
https://github.com/holub/mame
synced 2025-04-19 15:11:37 +03:00
DEC LA120: Keyboard matrix is done, keyboard reading should work in theory. UART partly attached. Corrected cpu XTAL. [Lord Nightmare]
This commit is contained in:
Lord-Nightmare
parent
7a1747b079
commit
66342ace0c
@ -10,8 +10,9 @@
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#include "emu.h"
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#include "render.h"
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#include "ui/selgame.h"
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#include "cpu/i8085/i8085.h"
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#include "machine/i8251.h"
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#include "sound/beep.h"
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//**************************************************************************
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@ -24,62 +25,283 @@ public:
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// constructor
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decwriter_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu")
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m_maincpu(*this, "maincpu"),
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m_speaker(*this, "beeper"),
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m_uart(*this, "i8251")
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{
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}
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/*
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virtual void machine_start()
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{
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// force the UI to show the game select screen
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ui_menu_select_game::force_game_select(machine(), &machine().render().ui_container());
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}
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*/
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required_device<cpu_device> m_maincpu;
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required_device<beep_device> m_speaker;
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required_device<i8251_device> m_uart;
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//required_device<generic_terminal_device> m_terminal;
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UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
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{
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bitmap.fill(rgb_t::black);
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return 0;
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}
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DECLARE_READ8_MEMBER(la120_KBD_LED_r);
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DECLARE_WRITE8_MEMBER(la120_KBD_LED_w);
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DECLARE_READ8_MEMBER(la120_NVR_r);
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DECLARE_WRITE8_MEMBER(la120_NVR_w);
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DECLARE_READ8_MEMBER(la120_DC305_r);
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DECLARE_WRITE8_MEMBER(la120_DC305_w);
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private:
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required_device<cpu_device> m_maincpu;
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//required_device<generic_terminal_device> m_terminal;
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virtual void machine_start();
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//virtual void machine_reset();
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ioport_port* m_col_array[16];
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};
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READ8_MEMBER( decwriter_state::la120_KBD_LED_r )
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{
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/* for reading the keyboard array, addr bits 5-11 are ignored.
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* a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 a0
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* 0 0 1 1 x x x x x x x * * * * *
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* | | \---\---\--- column select
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* | \--------------- kbd_banksel0
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* \------------------- kbd_banksel1
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* if both banks are selected, the resulting row read is a binary OR of both (LA120-TM1, page 4-5)
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*/
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UINT8 code = 0;
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if (offset&0x8) code |= m_col_array[offset&0x7]->read();
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if (offset&0x10) code |= m_col_array[(offset&0x7)+8]->read();
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#ifdef KBD_VERBOSE
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logerror("Keyboard column %X read, returning %02X\n", offset&0xF, code);
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#endif
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return code;
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}
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WRITE8_MEMBER( decwriter_state::la120_KBD_LED_w )
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{
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}
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READ8_MEMBER( decwriter_state::la120_NVR_r )
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{
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return 0xFF;
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}
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WRITE8_MEMBER( decwriter_state::la120_NVR_w )
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{
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}
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READ8_MEMBER( decwriter_state::la120_DC305_r )
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{
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return 0xFF;
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}
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WRITE8_MEMBER( decwriter_state::la120_DC305_w )
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{
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}
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static ADDRESS_MAP_START(la120_mem, AS_PROGRAM, 8, decwriter_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE( 0x0000, 0x2fff ) AM_ROM
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//AM_RANGE( 0x3000, 0x3fff ) // keyboard
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AM_RANGE( 0x3000, 0x3fff ) AM_READWRITE(la120_KBD_LED_r, la120_KBD_LED_w) // keyboard drive/readback and status/7seg LEDS
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AM_RANGE( 0x4000, 0x43ff ) AM_MIRROR(0x0c00) AM_RAM // 1k 'low ram'
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AM_RANGE( 0x5000, 0x53ff ) AM_MIRROR(0x0c00) AM_RAM // 1k 'high ram'
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AM_RANGE( 0x6000, 0x6fff ) AM_RAM // ER1400 EAROM
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AM_RANGE( 0x7000, 0x7fff ) // DC305 printer controller ASIC stuff
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// 8000-ffff is reserved for expansion (i.e. unused, open bus)
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AM_RANGE( 0x6000, 0x6fff ) AM_MIRROR(0x08fe) AM_READWRITE(la120_NVR_r, la120_NVR_w) // ER1400 EAROM
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AM_RANGE( 0x7000, 0x7003 ) AM_MIRROR(0x0ffc) AM_READWRITE(la120_DC305_r, la120_DC305_w) // DC305 printer controller ASIC stuff
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// 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.
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ADDRESS_MAP_END
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/*
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* 8080 IO address map (x = ignored; * = selects address within this range)
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* (a15 to a8 are latched the same value as a7-a0 on the 8080 and 8085)
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a7 a6 a5 a4 a3 a2 a1 a0
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0 x x x x x 0 0 RW 8251 Data
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0 x x x x x 0 1 RW 8251 Status/Control
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0 x x x x x 1 x RW Flags Read/Write
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1 x x x x x x x RW Expansion (Open bus)
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*/
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static ADDRESS_MAP_START(la120_io, AS_IO, 8, decwriter_state)
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ADDRESS_MAP_UNMAP_HIGH
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//AM_RANGE(0x00, 0x00) AM_MIRROR(0x7D) // 8251 usart
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AM_RANGE(0x00, 0x00) AM_MIRROR(0x7C) AM_DEVREADWRITE("i8251", i8251_device, data_r, data_w) // 8251 Data
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AM_RANGE(0x01, 0x01) AM_MIRROR(0x7C) AM_DEVREADWRITE("i8251", i8251_device, status_r, control_w) // 8251 Status/Control
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//AM_RANGE(0x02, 0x02) AM_MIRROR(0x7D) // other io ports
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// 0x80-0xff are reserved for expansion (i.e. unused, open bus)
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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ADDRESS_MAP_END
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/* Input ports */
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static INPUT_PORTS_START( la120 )
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PORT_START("COL0")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num .") PORT_CODE(KEYCODE_DEL_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("PF4") PORT_CODE(KEYCODE_F4)
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Local LF") PORT_CODE(KEYCODE_F12)
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Break") PORT_CODE(KEYCODE_F6)
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PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
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PORT_START("COL1")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("PF3") PORT_CODE(KEYCODE_F3)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Local FF") PORT_CODE(KEYCODE_F11)
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Delete") PORT_CODE(KEYCODE_DEL) PORT_CHAR(127)
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
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PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) // this is actually the cover open interlock sensor
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PORT_START("COL2")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("PF2") PORT_CODE(KEYCODE_F2)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("HERE IS") PORT_CODE(KEYCODE_F10)
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("(alternate) Opt LF") PORT_CODE(KEYCODE_RALT)
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("` ~") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~')
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PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) // this is actually the paper out interlock sensor
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PORT_START("COL3")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("PF1") PORT_CODE(KEYCODE_F1)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("LF") PORT_CODE(KEYCODE_LALT) PORT_CHAR(10)
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("LINE LOCAL") PORT_CODE(KEYCODE_F9)
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("] }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("= +") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+')
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PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
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PORT_START("COL4")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num -") PORT_CODE(KEYCODE_MINUS_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num ,") PORT_CODE(KEYCODE_PLUS_PAD)
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("' \"") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("[ {") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("- _") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
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PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_TOGGLE PORT_NAME("Caps lock") PORT_CODE(KEYCODE_CAPSLOCK) // TODO: does the physical switch toggle?
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PORT_START("COL5")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 0") PORT_CODE(KEYCODE_0_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("; :") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("0 )") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
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PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
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PORT_START("COL6")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 9") PORT_CODE(KEYCODE_9_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("9 (") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(')
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PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
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PORT_START("COL7")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 8") PORT_CODE(KEYCODE_8_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("8 *") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*')
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PORT_BIT(0x60, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Set Up") PORT_CODE(KEYCODE_F5)
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PORT_START("COL8")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 7") PORT_CODE(KEYCODE_7_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("7 &") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&')
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PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_START("COL9")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 6") PORT_CODE(KEYCODE_6_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("6 ^") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^')
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PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_START("COLA")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 5") PORT_CODE(KEYCODE_5_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
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PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_START("COLB")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 4") PORT_CODE(KEYCODE_4_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
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PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_START("COLC")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 3") PORT_CODE(KEYCODE_3_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
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PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_START("COLD")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 2") PORT_CODE(KEYCODE_2_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("2 @") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
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PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_START("COLE")
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PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Num 1") PORT_CODE(KEYCODE_1_PAD)
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PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
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PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
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PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
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PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
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PORT_BIT(0xe0, IP_ACTIVE_HIGH, IPT_UNUSED)
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PORT_START("COLF")
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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 )
|
||||
|
||||
Loading…
Reference in New Issue
Block a user