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Diffstat (limited to 'src/mame/drivers/m3.cpp')
-rw-r--r-- | src/mame/drivers/m3.cpp | 675 |
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 ) |