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-rw-r--r--src/mame/drivers/m3.cpp675
1 files changed, 0 insertions, 675 deletions
diff --git a/src/mame/drivers/m3.cpp b/src/mame/drivers/m3.cpp
deleted file mode 100644
index 0d037813f4b..00000000000
--- a/src/mame/drivers/m3.cpp
+++ /dev/null
@@ -1,675 +0,0 @@
-// license: BSD-3-Clause
-// copyright-holders: Robbbert, Dirk Best
-/***************************************************************************
-
- LSI M-THREE
-
- Models:
- - M-THREE/100 (SA400, 5.25" single sided)
- - M-THREE/110 (SA410, 5.25" single sided)
- - M-THREE/150 (SA450, 5.25" double sided)
- - M-THREE/160 (SA460, 5.25" double sided)
- - M-THREE/200 (SA800, 8" single sided)
- - M-THREE/250 (SA850, 8" double sided) [emulated by default]
- - M-THREE/320 (SA800, 8" single sided, Winchester 5 MB)
- - M-THREE/325 (SA850, 8" double sided, Winchester 5 MB)
- - M-THREE/340 (SA800, 8" single sided, Winchester 10 MB)
- - M-THREE/345 (SA850, 8" double sided, Winchester 10 MB)
-
- Hardware:
- - MK3880N-IRL (Z80)
- - 64 KB RAM
- - Z80 CTC
- - 2x D8255AC PPI
- - D8251A
- - MC6845P CRTC
- - FD1793 FDC
- - XTAL X1 21.??? Mhz (unreadable)
- - XTAL X2 16 MHz
- - XTAL X3 4.9152 MHz
- - Keyboard XTAL 6.1?? MHz (assumed to be 6.144 MHz)
-
- TODO:
- - Initial PC is currently hacked to f000
- - Verify/fix floppy hookup (CPU needs to be overclocked?)
- - Printer interface
- - Buzzer
- - Map the rest of the keys, verify existing keys
- - Switch FDC to 1 MHz for 5.25" drives
-
- Notes:
- - No offical software available, but a custom version of CP/M
- - Y to boot from floppy, ESC to enter monitor, any other key to
- boot from IDE
-
-***************************************************************************/
-
-#include "emu.h"
-#include "cpu/mcs48/mcs48.h"
-#include "cpu/z80/z80.h"
-#include "machine/z80ctc.h"
-#include "machine/i8255.h"
-#include "machine/i8251.h"
-#include "machine/wd_fdc.h"
-#include "video/mc6845.h"
-#include "imagedev/floppy.h"
-#include "bus/rs232/rs232.h"
-#include "emupal.h"
-#include "screen.h"
-
-
-namespace {
-
-
-//**************************************************************************
-// TYPE DEFINITIONS
-//**************************************************************************
-
-class m3_state : public driver_device
-{
-public:
- m3_state(const machine_config &mconfig, device_type type, const char *tag)
- : driver_device(mconfig, type, tag),
- m_maincpu(*this, "maincpu"),
- m_ctc(*this, "ctc"),
- m_ppi(*this, "ppi%u", 0U),
- m_chargen(*this, "chargen"),
- m_vram(*this, "vram"),
- m_palette(*this, "palette"),
- m_fdc(*this, "fdc"),
- m_floppy(*this, "fdc:%u", 0),
- m_kbdmcu(*this, "kbdmcu"),
- m_special(*this, "SPECIAL"),
- m_keys(*this, "K%02u", 0U)
- { }
-
- void m3(machine_config &config);
-
-protected:
- virtual void machine_start() override;
- virtual void machine_reset() override;
-
-private:
- required_device<z80_device> m_maincpu;
- required_device<z80ctc_device> m_ctc;
- required_device_array<i8255_device, 2> m_ppi;
- required_region_ptr<uint8_t> m_chargen;
- required_shared_ptr<uint8_t> m_vram;
- required_device<palette_device> m_palette;
- required_device<fd1793_device> m_fdc;
- required_device_array<floppy_connector, 2> m_floppy;
- required_device<i8035_device> m_kbdmcu;
- required_ioport m_special;
- required_ioport_array<16> m_keys;
-
- void mem_map(address_map &map);
- void io_map(address_map &map);
- void kbd_mem_map(address_map &map);
- void kbd_io_map(address_map &map);
-
- int kbd_t0_r();
- int kbd_t1_r();
- uint8_t kbd_p1_r();
- void kbd_p1_w(uint8_t data);
- void kbd_p2_w(uint8_t data);
- void kbd_data_w(uint8_t data);
- int m_kbd_col;
- int m_kbd_row;
- uint8_t m_kbd_data;
-
- void ppi2_pa_w(uint8_t data);
- uint8_t ppi2_pb_r();
-
- MC6845_UPDATE_ROW(crtc_update_row);
-
- void fdc_intrq_w(int state);
- void fdc_drq_w(int state);
- uint8_t fdc_data_r(offs_t offset);
- void fdc_data_w(offs_t offset, uint8_t data);
- bool m_nmi_taken;
-};
-
-
-//**************************************************************************
-// ADDRESS MAPS
-//**************************************************************************
-
-void m3_state::mem_map(address_map &map)
-{
- map(0x0000, 0xe7ff).ram();
- map(0xe800, 0xefff).ram().share("vram");
- map(0xf000, 0xffff).rom().region("maincpu", 0);
-}
-
-void m3_state::io_map(address_map &map)
-{
- map.unmap_value_high();
- map.global_mask(0xff);
- map(0x80, 0x83).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write));
- map(0x84, 0x84).rw("crtc", FUNC(mc6845_device::status_r), FUNC(mc6845_device::address_w));
- map(0x85, 0x85).rw("crtc", FUNC(mc6845_device::register_r), FUNC(mc6845_device::register_w));
- map(0x88, 0x88).rw(m_fdc, FUNC(fd1793_device::status_r), FUNC(fd1793_device::cmd_w));
- map(0x89, 0x89).rw(m_fdc, FUNC(fd1793_device::track_r), FUNC(fd1793_device::track_w));
- map(0x8a, 0x8a).rw(m_fdc, FUNC(fd1793_device::sector_r), FUNC(fd1793_device::sector_w));
- map(0x8b, 0x8b).rw(FUNC(m3_state::fdc_data_r), FUNC(m3_state::fdc_data_w));
- map(0x8c, 0x8d).rw("usart", FUNC(i8251_device::read), FUNC(i8251_device::write));
- map(0x90, 0x93).rw(m_ppi[0], FUNC(i8255_device::read), FUNC(i8255_device::write));
- map(0x94, 0x97).rw(m_ppi[1], FUNC(i8255_device::read), FUNC(i8255_device::write));
-}
-
-void m3_state::kbd_mem_map(address_map &map)
-{
- map(0x000, 0x7ff).rom().mirror(0x800).region("keyboard", 0);
-}
-
-void m3_state::kbd_io_map(address_map &map)
-{
- map(0x30, 0x30).mirror(0xf).w(FUNC(m3_state::kbd_data_w));
-}
-
-
-//**************************************************************************
-// INPUT DEFINITIONS
-//**************************************************************************
-
-// unmapped keys:
-//
-// INIT PROG F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14
-// INS_CHAR DEL_CHAR INS_LINE DEL_LINE CLEAR_FORE CLEAR_PAGE PROT_MODE BLOCK_MODE
-// SEND_LINE SEND_FORE SEND_PAGE PAGE_FWD UP PAGE_BACK LEFT HOME RIGHT
-// BREAK SET_TAB DOWN CLEAR_TAB
-
-static INPUT_PORTS_START( m3 )
- PORT_START("SPECIAL")
- PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) // or shift-lock?
- PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
- PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
- PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_LALT) PORT_NAME("Repeat")
-
- PORT_START("K00")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(": (?)")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b4")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b3")
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("85")
-
- PORT_START("K01")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0f")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b2")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("86")
-
- PORT_START("K02")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("05")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("96")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("89")
-
- PORT_START("K03")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(';') PORT_CHAR('+')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 (?)")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("95")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('@') PORT_CHAR('`')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8a")
-
- PORT_START("K04")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(':') PORT_CHAR('*')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("11")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("94")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('^') PORT_CHAR('~')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8b")
-
- PORT_START("K05")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("cd")
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("93")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') // actually ¦
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8c")
-
- PORT_START("K06")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("92")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR(9)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8d")
-
- PORT_START("K07")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('_')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("91")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8e")
-
- PORT_START("K08")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(DEL))
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("90")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("bc")
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("LF") PORT_CHAR('\n')
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8f")
-
- PORT_START("K09")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("cd")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b1")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b0")
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("87")
-
- PORT_START("K10")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("97")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("88")
-
- PORT_START("K11")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("03")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b5")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("84")
-
- PORT_START("K12")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("cd")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b7")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b6")
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("83")
-
- PORT_START("K13")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR(0xa3) // £
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ea")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b8")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("82")
-
- PORT_START("K14")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("02")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ba")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("b9")
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("81")
-
- PORT_START("K15")
- PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
- PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
- PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("c3")
- PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("bb")
- PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD))
- PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
- PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
- PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("80")
-INPUT_PORTS_END
-
-int m3_state::kbd_t0_r()
-{
- // outputs 26 alternating 0 and 1 to i/o port 0x00 when active
- return 1;
-}
-
-int m3_state::kbd_t1_r()
-{
- // checked right before outputing a new keycode
- return 0;
-}
-
-uint8_t m3_state::kbd_p1_r()
-{
- uint8_t data = 0;
-
- // ---4---- key down
- // ----3--- repeat
- // -----2-- control
- // ------1- shift
- // -------0 caps-lock, shift-lock?
-
- data |= BIT(m_keys[m_kbd_col]->read(), m_kbd_row) ? 0x00 : 0x10;
- data |= m_special->read();
-
- return data;
-}
-
-void m3_state::kbd_p1_w(uint8_t data)
-{
- // 765----- row select
-
- m_kbd_row = data >> 5;
-}
-
-void m3_state::kbd_p2_w(uint8_t data)
-{
- // 7654---- column select
- // ----3210 unused
-
- m_kbd_col = data >> 4;
-}
-
-void m3_state::kbd_data_w(uint8_t data)
-{
- m_kbd_data = data;
-
- m_ppi[1]->pc2_w(0);
- m_ppi[1]->pc2_w(1);
-}
-
-
-//**************************************************************************
-// VIDEO EMULATION
-//**************************************************************************
-
-MC6845_UPDATE_ROW( m3_state::crtc_update_row )
-{
- rgb_t const *const pen = m_palette->palette()->entry_list_raw();
-
- for (uint16_t x = 0; x < x_count; x++)
- {
- uint16_t mem = (ma + x) & 0x7ff;
- uint8_t chr = m_vram[mem];
- uint8_t gfx = m_chargen[((chr << 4) | ra) & 0x7ff];
-
- // invert?
- if (BIT(chr, 7))
- gfx ^= 0xff;
-
- // cursor?
- if (x == cursor_x)
- gfx ^= 0xff;
-
- // draw 7 pixels of the character
- for (int i = 0; i < 7; i++)
- bitmap.pix(y, x * 7 + i) = pen[BIT(gfx, 6 - i)];
- }
-}
-
-static const gfx_layout charlayout =
-{
- 7, 10,
- RGN_FRAC(1,1),
- 1,
- { 0 },
- { 1, 2, 3, 4, 5, 6, 7 },
- { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8, 8*8, 9*8 },
- 8*16
-};
-
-static GFXDECODE_START(chars)
- GFXDECODE_ENTRY("chargen", 0, charlayout, 0, 1)
-GFXDECODE_END
-
-
-//**************************************************************************
-// MACHINE EMULATION
-//**************************************************************************
-
-void m3_state::fdc_intrq_w(int state)
-{
- if (state)
- {
- m_nmi_taken = false;
- m_maincpu->set_input_line(INPUT_LINE_HALT, CLEAR_LINE);
- }
-
- m_ctc->trg1(state);
-}
-
-void m3_state::fdc_drq_w(int state)
-{
- if (state)
- m_maincpu->set_input_line(INPUT_LINE_HALT, CLEAR_LINE);
-
- if (state && !m_nmi_taken)
- {
- m_nmi_taken = true;
- m_maincpu->pulse_input_line(INPUT_LINE_NMI, attotime::zero);
- }
-}
-
-uint8_t m3_state::fdc_data_r(offs_t offset)
-{
- if ((m_fdc->drq_r() == 0) && m_nmi_taken)
- {
- // cpu tries to read data without drq, halt it and reset pc
- m_maincpu->set_input_line(INPUT_LINE_HALT, ASSERT_LINE);
- m_maincpu->set_state_int(Z80_PC, m_maincpu->state_int(Z80_PC) - 2);
-
- return 0;
- }
-
- return m_fdc->data_r();
-}
-
-void m3_state::fdc_data_w(offs_t offset, uint8_t data)
-{
- if ((m_fdc->drq_r() == 0) && m_nmi_taken)
- {
- // cpu tries to write data without drq, halt it and reset pc
- m_maincpu->set_input_line(INPUT_LINE_HALT, ASSERT_LINE);
- m_maincpu->set_state_int(Z80_PC, m_maincpu->state_int(Z80_PC) - 2);
-
- return;
- }
-
- m_fdc->data_w(data);
-}
-
-void m3_state::ppi2_pa_w(uint8_t data)
-{
- floppy_image_device *floppy = nullptr;
-
- // 7------- not used?
- // -6------ buzzer
- // --5----- not used?
- // ---4---- unknown (motor?)
- // ----3--- unknown
- // -----2-- floppy side
- // ------10 drive select
-
- logerror("ppi2_pa_w: %02x\n", data);
-
- if (!BIT(data, 0) && m_floppy[0])
- floppy = m_floppy[0]->get_device();
- else if (!BIT(data, 1) && m_floppy[1])
- floppy = m_floppy[1]->get_device();
-
- m_fdc->set_floppy(floppy);
-
- if (floppy)
- floppy->ss_w(BIT(data, 2));
-}
-
-uint8_t m3_state::ppi2_pb_r()
-{
- return m_kbd_data;
-}
-
-void m3_state::machine_start()
-{
- // register for save states
- save_item(NAME(m_kbd_col));
- save_item(NAME(m_kbd_row));
- save_item(NAME(m_kbd_data));
- save_item(NAME(m_nmi_taken));
-}
-
-void m3_state::machine_reset()
-{
- m_maincpu->set_pc(0xf000);
-
- m_nmi_taken = false;
-
- // floppy motor is always on
- if (m_floppy[0])
- m_floppy[0]->get_device()->mon_w(0);
- if (m_floppy[1])
- m_floppy[1]->get_device()->mon_w(0);
-}
-
-
-//**************************************************************************
-// MACHINE DEFINTIONS
-//**************************************************************************
-
-static const z80_daisy_config daisy_chain[] =
-{
- { "ctc" },
- { nullptr }
-};
-
-static DEVICE_INPUT_DEFAULTS_START( rs232_defaults )
- DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_9600 )
- DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_9600 )
- DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_7 )
- DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_EVEN )
- DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_1 )
-DEVICE_INPUT_DEFAULTS_END
-
-static void m3_floppies(device_slot_interface &device)
-{
- device.option_add("sa400", FLOPPY_525_SSSD_35T);
- device.option_add("sa410", FLOPPY_525_SSQD);
- device.option_add("sa450", FLOPPY_525_DD);
- device.option_add("sa460", FLOPPY_525_QD);
- device.option_add("sa800", FLOPPY_8_SSDD);
- device.option_add("sa850", FLOPPY_8_DSDD);
-}
-
-void m3_state::m3(machine_config &config)
-{
- Z80(config, m_maincpu, 4.9152_MHz_XTAL / 2);
- m_maincpu->set_clock_scale(1.2f); // needs to be overclocked or its too slow for the floppy
- m_maincpu->set_addrmap(AS_PROGRAM, &m3_state::mem_map);
- m_maincpu->set_addrmap(AS_IO, &m3_state::io_map);
- m_maincpu->set_daisy_config(daisy_chain);
-
- Z80CTC(config, m_ctc, 0); // unknown clock
- m_ctc->intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0);
- m_ctc->set_clk<0>(4.9152_MHz_XTAL / 4);
- m_ctc->zc_callback<0>().set("usart", FUNC(i8251_device::write_txc));
- m_ctc->zc_callback<0>().append("usart", FUNC(i8251_device::write_rxc));
-
- I8255(config, m_ppi[0]);
-
- I8255(config, m_ppi[1]);
- m_ppi[1]->out_pa_callback().set(FUNC(m3_state::ppi2_pa_w));
- m_ppi[1]->in_pb_callback().set(FUNC(m3_state::ppi2_pb_r));
-
- i8251_device &usart(I8251(config, "usart", 0)); // unknown clock
- usart.txd_handler().set("rs232", FUNC(rs232_port_device::write_txd));
- usart.rts_handler().set("rs232", FUNC(rs232_port_device::write_rts));
- usart.dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr));
-
- rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr));
- rs232.set_option_device_input_defaults("printer", DEVICE_INPUT_DEFAULTS_NAME(rs232_defaults));
- rs232.rxd_handler().set("usart", FUNC(i8251_device::write_rxd));
- rs232.dsr_handler().set("usart", FUNC(i8251_device::write_dsr));
- rs232.cts_handler().set("usart", FUNC(i8251_device::write_cts));
-
- // video hardware
- screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER, rgb_t::green()));
- screen.set_raw(21'840'000 / 2, 707, 0, 560, 309, 0, 240); // unknown clock, hand-tuned to ~50 fps
- screen.set_screen_update("crtc", FUNC(mc6845_device::screen_update));
-
- GFXDECODE(config, "gfxdecode", m_palette, chars);
-
- PALETTE(config, m_palette, palette_device::MONOCHROME);
-
- mc6845_device &crtc(MC6845(config, "crtc", 21'840'000 / 2 / 7)); // unknown clock
- crtc.set_screen("screen");
- crtc.set_show_border_area(false);
- crtc.set_char_width(7);
- crtc.set_update_row_callback(FUNC(m3_state::crtc_update_row));
- crtc.out_vsync_callback().set(m_ctc, FUNC(z80ctc_device::trg2));
-
- // floppy
- FD1793(config, m_fdc, 16_MHz_XTAL / 8);
- m_fdc->intrq_wr_callback().set(FUNC(m3_state::fdc_intrq_w));
- m_fdc->drq_wr_callback().set(FUNC(m3_state::fdc_drq_w));
- FLOPPY_CONNECTOR(config, "fdc:0", m3_floppies, "sa850", floppy_image_device::default_mfm_floppy_formats);
- FLOPPY_CONNECTOR(config, "fdc:1", m3_floppies, "sa850", floppy_image_device::default_mfm_floppy_formats);
-
- // keyboard
- I8035(config, m_kbdmcu, 6.144_MHz_XTAL);
- m_kbdmcu->set_addrmap(AS_PROGRAM, &m3_state::kbd_mem_map);
- m_kbdmcu->set_addrmap(AS_IO, &m3_state::kbd_io_map);
- m_kbdmcu->p1_in_cb().set(FUNC(m3_state::kbd_p1_r));
- m_kbdmcu->p1_out_cb().set(FUNC(m3_state::kbd_p1_w));
- m_kbdmcu->p2_out_cb().set(FUNC(m3_state::kbd_p2_w));
- m_kbdmcu->t0_in_cb().set(FUNC(m3_state::kbd_t0_r));
- m_kbdmcu->t1_in_cb().set(FUNC(m3_state::kbd_t1_r));
-}
-
-
-//**************************************************************************
-// ROM DEFINITIONS
-//**************************************************************************
-
-ROM_START( m3 )
- ROM_REGION(0x1000, "maincpu", 0)
- ROM_LOAD("bootstrap_prom_034.bin", 0x0000, 0x0800, CRC(7fdb051e) SHA1(7aa24d4f44b6a0c8f7f647667f4997432c186cac))
-
- // Homebrew Monitor ROM, written by Steve Hunt. Uses the socket of the HDD ROM.
- ROM_LOAD("monitor_prom_v19_2017-07-05.bin", 0x0800, 0x0800, CRC(0608848f) SHA1(9a82cb49056ff1a1d53ce2bd026537a6914a4847))
-
- ROM_REGION(0x800, "chargen", 0)
- ROM_LOAD("6845crt_font_prom_033.bin", 0x000, 0x800, CRC(cc29f664) SHA1(4197530d9455d665fd4773f95bb6394f6b056dec))
-
- ROM_REGION(0x800, "keyboard", 0)
- ROM_LOAD("keyboard_prom_032.bin", 0x000, 0x800, CRC(21548355) SHA1(ee4ce4af9c78474263dd58e0f19e79e5b00926fa))
-ROM_END
-
-
-} // anonymous namespace
-
-
-//**************************************************************************
-// SYSTEM DRIVERS
-//**************************************************************************
-
-// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
-COMP( 1982, m3, 0, 0, m3, m3, m3_state, empty_init, "LSI", "M-THREE", MACHINE_NOT_WORKING | MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE )