// license:BSD-3-Clause // copyright-holders:Lee Ward, Dirk Best, Curt Coder /************************************************************************* Memotech MTX 500, MTX 512 and RS 128 **************************************************************************/ /* TODO: - cassette - cartridges - SDX/FDX floppy - HDX hard disk - HRX high resolution graphics - CBM (all RAM) mode - "Silicon" disks - Multi Effect Video Wall */ #include "emu.h" #include "includes/mtx.h" #include "cpu/z80/z80.h" #include "cpu/z80/z80daisy.h" #include "imagedev/cassette.h" #include "machine/ram.h" #include "imagedev/snapquik.h" #include "bus/centronics/ctronics.h" #include "machine/z80ctc.h" #include "machine/z80dart.h" #include "video/tms9928a.h" #include "sound/sn76496.h" #include "softlist.h" /*************************************************************************** MEMORY MAPS ***************************************************************************/ /*------------------------------------------------- ADDRESS_MAP( mtx_mem ) -------------------------------------------------*/ static ADDRESS_MAP_START( mtx_mem, AS_PROGRAM, 8, mtx_state ) AM_RANGE(0x0000, 0x1fff) AM_ROMBANK("bank1") AM_RANGE(0x2000, 0x3fff) AM_ROMBANK("bank2") AM_RANGE(0x4000, 0x7fff) AM_RAMBANK("bank3") AM_RANGE(0x8000, 0xbfff) AM_RAMBANK("bank4") AM_RANGE(0xc000, 0xffff) AM_RAM ADDRESS_MAP_END /*------------------------------------------------- ADDRESS_MAP( mtx_io ) -------------------------------------------------*/ static ADDRESS_MAP_START( mtx_io, AS_IO, 8, mtx_state ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x00, 0x00) AM_READWRITE(mtx_strobe_r, mtx_bankswitch_w) AM_RANGE(0x01, 0x01) AM_DEVREADWRITE("tms9929a", tms9929a_device, vram_read, vram_write) AM_RANGE(0x02, 0x02) AM_DEVREADWRITE("tms9929a", tms9929a_device, register_read, register_write) AM_RANGE(0x03, 0x03) AM_READWRITE(mtx_sound_strobe_r, mtx_cst_w) AM_RANGE(0x04, 0x04) AM_READ(mtx_prt_r) AM_DEVWRITE("cent_data_out", output_latch_device, write) AM_RANGE(0x05, 0x05) AM_READWRITE(mtx_key_lo_r, mtx_sense_w) AM_RANGE(0x06, 0x06) AM_READWRITE(mtx_key_hi_r, mtx_sound_latch_w) // AM_RANGE(0x07, 0x07) PIO AM_RANGE(0x08, 0x0b) AM_DEVREADWRITE(Z80CTC_TAG, z80ctc_device, read, write) AM_RANGE(0x30, 0x31) AM_WRITE(hrx_address_w) AM_RANGE(0x32, 0x32) AM_READWRITE(hrx_data_r, hrx_data_w) AM_RANGE(0x33, 0x33) AM_READWRITE(hrx_attr_r, hrx_attr_w) // AM_RANGE(0x38, 0x38) AM_DEVWRITE(MC6845_TAG, mc6845_device, address_w) // AM_RANGE(0x39, 0x39) AM_DEVWRITE(MC6845_TAG, mc6845_device, register_r, register_w) /* AM_RANGE(0x40, 0x43) AM_DEVREADWRITE_LEGACY(FD1791_TAG, wd17xx_r, wd17xx_w) AM_RANGE(0x44, 0x44) AM_READWRITE(fdx_status_r, fdx_control_w) AM_RANGE(0x45, 0x45) AM_WRITE(fdx_drv_sel_w) AM_RANGE(0x46, 0x46) AM_WRITE(fdx_dma_lo_w) AM_RANGE(0x47, 0x47) AM_WRITE(fdx_dma_hi_w)*/ ADDRESS_MAP_END /*------------------------------------------------- ADDRESS_MAP( rs128_io ) -------------------------------------------------*/ static ADDRESS_MAP_START( rs128_io, AS_IO, 8, mtx_state ) AM_IMPORT_FROM(mtx_io) AM_RANGE(0x0c, 0x0f) AM_DEVREADWRITE(Z80DART_TAG, z80dart_device, cd_ba_r, cd_ba_w) ADDRESS_MAP_END /*************************************************************************** INPUT PORTS ***************************************************************************/ /*------------------------------------------------- INPUT_PORTS( mtx512 ) -------------------------------------------------*/ static INPUT_PORTS_START( mtx512 ) PORT_START("ROW0") PORT_BIT( 0x001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_BIT( 0x002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_BIT( 0x004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_BIT( 0x008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') PORT_BIT( 0x010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=') PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('\\') PORT_CHAR('|') PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 7 Page") PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(PGDN)) PORT_CHAR(UCHAR_MAMEKEY(7_PAD)) PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(CANCEL)) PORT_CHAR(UCHAR_MAMEKEY(9_PAD)) PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) PORT_START("ROW1") PORT_BIT( 0x001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC)) PORT_BIT( 0x002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"') PORT_BIT( 0x004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_BIT( 0x008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') PORT_BIT( 0x010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('^') PORT_CHAR('~') PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 8 EOL") PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(END)) PORT_CHAR(UCHAR_MAMEKEY(8_PAD)) PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5)) PORT_START("ROW2") PORT_BIT( 0x001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2) PORT_BIT( 0x002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_BIT( 0x004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_BIT( 0x008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') PORT_BIT( 0x010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR('[') PORT_CHAR('{') PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_CHAR(UCHAR_MAMEKEY(5_PAD)) PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR('\t') PORT_CHAR(UCHAR_MAMEKEY(4_PAD)) PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2)) PORT_START("ROW3") PORT_BIT( 0x001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') PORT_BIT( 0x002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') PORT_BIT( 0x004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_BIT( 0x008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') PORT_BIT( 0x010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@') PORT_CHAR('`') PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Linefeed") PORT_CODE(KEYCODE_PRTSCR) PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_CHAR(UCHAR_MAMEKEY(1_PAD)) PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL)) PORT_CHAR(UCHAR_MAMEKEY(6_PAD)) PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F6)) PORT_START("ROW4") PORT_BIT( 0x001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("AlphaLock") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_BIT( 0x002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') PORT_BIT( 0x004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_BIT( 0x008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_BIT( 0x010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+') PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR(']') PORT_CHAR('}') PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_CHAR(UCHAR_MAMEKEY(3_PAD)) PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7)) PORT_START("ROW5") PORT_BIT( 0x001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') PORT_BIT( 0x002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') PORT_BIT( 0x004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_BIT( 0x008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') PORT_BIT( 0x010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*') PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(HOME)) PORT_CHAR(UCHAR_MAMEKEY(2_PAD)) PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3)) PORT_START("ROW6") PORT_BIT( 0x001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_BIT( 0x004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') PORT_BIT( 0x008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') PORT_BIT( 0x010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD)) PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F8)) PORT_START("ROW7") PORT_BIT( 0x001, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_BIT( 0x002, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_BIT( 0x004, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') PORT_BIT( 0x008, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') PORT_BIT( 0x010, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') PORT_BIT( 0x020, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('_') PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(INSERT)) PORT_CHAR(UCHAR_MAMEKEY(0_PAD)) PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad Enter CLS") PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD)) PORT_BIT( 0x100, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4)) PORT_START("country_code") PORT_DIPNAME(0x04, 0x00, "Country Code Switch 1") PORT_DIPSETTING(0x04, DEF_STR(Off) ) PORT_DIPSETTING(0x00, DEF_STR(On) ) PORT_DIPNAME(0x08, 0x00, "Country Code Switch 0") PORT_DIPSETTING(0x08, DEF_STR(Off) ) PORT_DIPSETTING(0x00, DEF_STR(On) ) PORT_BIT( 0xf3, IP_ACTIVE_LOW, IPT_UNUSED) INPUT_PORTS_END /*************************************************************************** DEVICE CONFIGURATION ***************************************************************************/ /*------------------------------------------------- Z80CTC -------------------------------------------------*/ TIMER_DEVICE_CALLBACK_MEMBER(mtx_state::ctc_tick) { m_z80ctc->trg1(1); m_z80ctc->trg1(0); m_z80ctc->trg2(1); m_z80ctc->trg2(0); } WRITE_LINE_MEMBER(mtx_state::ctc_trg1_w) { if (m_z80dart) { m_z80dart->rxca_w(state); m_z80dart->txca_w(state); } } WRITE_LINE_MEMBER(mtx_state::ctc_trg2_w) { if (m_z80dart) { m_z80dart->rxtxcb_w(state); } } /*------------------------------------------------- z80_daisy_config mtx_daisy_chain -------------------------------------------------*/ static const z80_daisy_config mtx_daisy_chain[] = { { Z80CTC_TAG }, { nullptr } }; /*------------------------------------------------- z80_daisy_config rs128_daisy_chain -------------------------------------------------*/ static const z80_daisy_config rs128_daisy_chain[] = { { Z80CTC_TAG }, { Z80DART_TAG }, { nullptr } }; TIMER_DEVICE_CALLBACK_MEMBER(mtx_state::cassette_tick) { int data = ((m_cassette)->input() > +0.0) ? 0 : 1; m_z80ctc->trg3(data); } /*------------------------------------------------- mtx_tms9928a_interface -------------------------------------------------*/ WRITE_LINE_MEMBER(mtx_state::mtx_tms9929a_interrupt) { m_z80ctc->trg0(state ? 0 : 1); } /*************************************************************************** MACHINE DRIVERS ***************************************************************************/ /*------------------------------------------------- MACHINE_CONFIG_START( mtx512, mtx_state ) -------------------------------------------------*/ static MACHINE_CONFIG_START( mtx512, mtx_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_4MHz) MCFG_CPU_PROGRAM_MAP(mtx_mem) MCFG_CPU_IO_MAP(mtx_io) MCFG_Z80_DAISY_CHAIN(mtx_daisy_chain) MCFG_MACHINE_START_OVERRIDE(mtx_state,mtx512) MCFG_MACHINE_RESET_OVERRIDE(mtx_state,mtx512) /* video hardware */ MCFG_DEVICE_ADD( "tms9929a", TMS9929A, XTAL_10_738635MHz / 2 ) MCFG_TMS9928A_VRAM_SIZE(0x4000) MCFG_TMS9928A_OUT_INT_LINE_CB(WRITELINE(mtx_state, mtx_tms9929a_interrupt)) MCFG_TMS9928A_SCREEN_ADD_PAL( "screen" ) MCFG_SCREEN_UPDATE_DEVICE( "tms9929a", tms9929a_device, screen_update ) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD(SN76489A_TAG, SN76489A, XTAL_4MHz) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) /* devices */ MCFG_DEVICE_ADD(Z80CTC_TAG, Z80CTC, XTAL_4MHz) MCFG_Z80CTC_INTR_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_Z80CTC_ZC1_CB(WRITELINE(mtx_state, ctc_trg1_w)) MCFG_Z80CTC_ZC2_CB(WRITELINE(mtx_state, ctc_trg2_w)) MCFG_TIMER_DRIVER_ADD_PERIODIC("z80ctc_timer", mtx_state, ctc_tick, attotime::from_hz(XTAL_4MHz/13)) MCFG_CENTRONICS_ADD(CENTRONICS_TAG, centronics_devices, "printer") MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(mtx_state, write_centronics_busy)) MCFG_CENTRONICS_FAULT_HANDLER(WRITELINE(mtx_state, write_centronics_fault)) MCFG_CENTRONICS_PERROR_HANDLER(WRITELINE(mtx_state, write_centronics_perror)) MCFG_CENTRONICS_SELECT_HANDLER(WRITELINE(mtx_state, write_centronics_select)) MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics") MCFG_SNAPSHOT_ADD("snapshot", mtx_state, mtx, "mtx", 1) MCFG_CASSETTE_ADD("cassette") MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_MUTED) MCFG_CASSETTE_INTERFACE("mtx_cass") MCFG_TIMER_DRIVER_ADD_PERIODIC("cassette_timer", mtx_state, cassette_tick, attotime::from_hz(44100)) /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("64K") MCFG_RAM_EXTRA_OPTIONS("96K,128K,160K,192K,224K,256K,288K,320K,352K,384K,416K,448K,480K,512K") MCFG_SOFTWARE_LIST_ADD("cass_list", "mtx_cass") MACHINE_CONFIG_END /*------------------------------------------------- MACHINE_CONFIG_DERIVED( mtx500, mtx512 ) -------------------------------------------------*/ static MACHINE_CONFIG_DERIVED( mtx500, mtx512 ) /* internal ram */ MCFG_RAM_MODIFY(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("32K") MCFG_RAM_EXTRA_OPTIONS("64K,96K,128K,160K,192K,224K,256K,288K,320K,352K,384K,416K,448K,480K,512K") MACHINE_CONFIG_END /*------------------------------------------------- MACHINE_CONFIG_DERIVED( rs128, mtx512 ) -------------------------------------------------*/ static MACHINE_CONFIG_DERIVED( rs128, mtx512 ) /* basic machine hardware */ MCFG_CPU_MODIFY(Z80_TAG) MCFG_CPU_IO_MAP(rs128_io) MCFG_Z80_DAISY_CHAIN(rs128_daisy_chain) /* devices */ MCFG_Z80DART_ADD(Z80DART_TAG, XTAL_4MHz, 0, 0, 0, 0 ) MCFG_Z80DART_OUT_INT_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) /* internal ram */ MCFG_RAM_MODIFY(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("128K") MCFG_RAM_EXTRA_OPTIONS("160K,192K,224K,256K,288K,320K,352K,384K,416K,448K,480K,512K") MACHINE_CONFIG_END /*************************************************************************** ROMS ***************************************************************************/ ROM_START( mtx512 ) ROM_REGION( 0x02000, "user1", 0 ) ROM_LOAD( "osrom", 0x0000, 0x2000, CRC(9ca858cc) SHA1(3804503a58f0bcdea96bb6488833782ebd03976d) ) ROM_REGION( 0x10000, "user2", 0 ) ROM_LOAD( "basicrom", 0x0000, 0x2000, CRC(87b4e59c) SHA1(c49782a82a7f068c1195cd967882ba9edd546eaf) ) ROM_LOAD( "assemrom", 0x2000, 0x2000, CRC(9d7538c3) SHA1(d1882c4ea61a68b1715bd634ded5603e18a99c5f) ) ROM_LOAD( "newword0", 0x4000, 0x2000, CRC(5433bd01) SHA1(56897f385476864337b7b994c1b46f50eaa57128) ) ROM_LOAD( "newword1", 0x6000, 0x2000, CRC(10980c03) SHA1(8245c42fb1eda43b67fa483e50e4ee3bc5f3f29f) ) ROM_LOAD( "newword2", 0x8000, 0x2000, CRC(cbff7130) SHA1(b4ab27def6020ba8e32959a1b988fce77bcc1d7f) ) ROM_LOAD( "newword3", 0xa000, 0x2000, CRC(e6bbc33b) SHA1(26faa4a8d952c4659f610e94608b630456ab89aa) ) ROM_REGION( 0x2000, "sdx", 0 ) ROM_LOAD( "sdx", 0x0000, 0x2000, NO_DUMP ) ROM_REGION( 0x2000, "mtx", 0 ) ROM_LOAD( "sm2 fdcx1 v03", 0x0000, 0x2000, NO_DUMP ) ROM_REGION( 0x1000, MC6845_TAG, 0 ) ROM_LOAD( "80z.bin", 0x0000, 0x1000, CRC(ea6fe865) SHA1(f84883f79bed34501e5828336894fad929bddbb5) ) /* Device GAL16V8 converted from PAL14L4 JEDEC map */ ROM_REGION( 0x117, "plds", 0 ) ROM_LOAD( "memotech-mtx512.bin", 0x0000, 0x0117, CRC(31f88133) SHA1(5bef3ce764121b3510b538824b2768f082b422bb) ) ROM_END #define rom_mtx500 rom_mtx512 #define rom_rs128 rom_mtx512 /*************************************************************************** SYSTEM DRIVERS ***************************************************************************/ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ COMP( 1983, mtx512, 0, 0, mtx512, mtx512, driver_device, 0, "Memotech Ltd", "MTX 512", 0 ) COMP( 1983, mtx500, mtx512, 0, mtx500, mtx512, driver_device, 0, "Memotech Ltd", "MTX 500", 0 ) COMP( 1984, rs128, mtx512, 0, rs128, mtx512, driver_device, 0, "Memotech Ltd", "RS 128", 0 ) /* The following roms are available should they be considered useful: ROM_START( mtx_roms ) ROM_LOAD( "assem.rom", CRC(599d5b6b) SHA1(3ec1f7f476a21ca3206012ded22198c020b47f7d) ) ROM_LOAD( "basic.rom", CRC(d1e9ff36) SHA1(e89ae3a627716e6cee7e35054be8a2472bdd49d4) ) ROM_LOAD( "boot.rom", CRC(ed98d6dd) SHA1(4671ee49bb96262b0468f7122a49bf2588170903) ) ROM_LOAD( "mtx3-an.rom", CRC(54c9eca2) SHA1(3e628beaa360e635264c8c2c3a5b8312951a220b) ) ROM_LOAD( "nboot.rom", CRC(9caea81c) SHA1(93fca6e7ffbc7ae3283b8bda9f01c36b2bed1c54) ) ROM_END BASIC.ROM this contains the monitor ROM plus the BASIC ROM. It's good to view them as one, because the monitor ROM contains a good deal of BASIC code and the machine code just runs from the monitor ROM into the BASIC ROM. It's also handy if you want to disassemble it (which you don't need because it's already done). MTX3-AN.ROM the monitor ROM, but slightly modified While detecting memory size, the startup code destroys RAM content. When you have a lot of RAM it is convenient to have a ramdisk for CP/M, but it is a nuisance if the ramdisk is trashed at each reset. The modification simply prevents RAM trashing. ASSEM.ROM assembler ROM BOOT.ROM FDX floppy boot ROM NBOOT.ROM replacement FDX boot ROM written by M. Kessler (supports booting from different disk formats and different drives) */