diff options
author | 2012-08-21 10:41:19 +0000 | |
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committer | 2012-08-21 10:41:19 +0000 | |
commit | 7285b359d259b2ae0fdf85096571c386ec8c991a (patch) | |
tree | a027aff57f1a255f9ec6cfd3b68cabe4b6683998 /src/mess/drivers/elwro800.c | |
parent | 67c425e90757876a6716b7867df30c0149912e74 (diff) |
Merge of MESS sources (no whatsnew)
Diffstat (limited to 'src/mess/drivers/elwro800.c')
-rw-r--r-- | src/mess/drivers/elwro800.c | 644 |
1 files changed, 644 insertions, 0 deletions
diff --git a/src/mess/drivers/elwro800.c b/src/mess/drivers/elwro800.c new file mode 100644 index 00000000000..7f27ada96eb --- /dev/null +++ b/src/mess/drivers/elwro800.c @@ -0,0 +1,644 @@ +/*************************************************************************** + + Elwro 800 Junior + + Driver by Mariusz Wojcieszek + + ToDo: + - 8251 DTR and DTS signals are connected (with some additional logic) to NMI of Z80, this + is not emulated + - 8251 is used for JUNET network (a network of Elwro 800 Junior computers, allows sharing + floppy disc drives and printers) - network is not emulated + +****************************************************************************/ + +#include "emu.h" +#include "includes/spectrum.h" + +/* Components */ +#include "cpu/z80/z80.h" +#include "machine/upd765.h" /* for floppy disc controller */ +#include "machine/i8255.h" +#include "sound/speaker.h" +#include "sound/wave.h" +#include "machine/ctronics.h" +#include "machine/i8251.h" + +/* Devices */ +#include "imagedev/flopdrv.h" +#include "imagedev/cassette.h" +#include "formats/tzx_cas.h" +#include "machine/ram.h" + + +class elwro800_state : public spectrum_state +{ +public: + elwro800_state(const machine_config &mconfig, device_type type, const char *tag) + : spectrum_state(mconfig, type, tag) { } + + /* for elwro800 */ + /* RAM mapped at 0 */ + UINT8 m_ram_at_0000; + + /* NR signal */ + UINT8 m_NR; + UINT8 m_df_on_databus; + + DECLARE_DIRECT_UPDATE_MEMBER(elwro800_direct_handler); + DECLARE_WRITE8_MEMBER(elwro800jr_fdc_control_w); + DECLARE_READ8_MEMBER(elwro800jr_io_r); + DECLARE_WRITE8_MEMBER(elwro800jr_io_w); +}; + + +/************************************* + * + * When RAM is mapped at 0x0000 - 0x1fff (in CP/J mode), reading a location 66 with /M1=0 + * (effectively reading NMI vector) is hardwired to return 0xDF (RST #18) + * (note that in CP/J mode address 66 is used for FCB) + * + *************************************/ +DIRECT_UPDATE_MEMBER(elwro800_state::elwro800_direct_handler) +{ + if (m_ram_at_0000 && address == 0x66) + { + direct.explicit_configure(0x66, 0x66, 0, &m_df_on_databus); + return ~0; + } + return address; +} + +/************************************* + * + * UPD765/Floppy drive + * + *************************************/ + +static const struct upd765_interface elwro800jr_upd765_interface = +{ + DEVCB_NULL, + DEVCB_NULL, + NULL, + UPD765_RDY_PIN_CONNECTED, + {FLOPPY_0,FLOPPY_1, NULL, NULL} +}; + +WRITE8_MEMBER(elwro800_state::elwro800jr_fdc_control_w) +{ + device_t *fdc = machine().device("upd765"); + + floppy_mon_w(floppy_get_device(machine(), 0), !BIT(data, 0)); + floppy_mon_w(floppy_get_device(machine(), 1), !BIT(data, 1)); + floppy_drive_set_ready_state(floppy_get_device(machine(), 0), 1,1); + floppy_drive_set_ready_state(floppy_get_device(machine(), 1), 1,1); + + upd765_tc_w(fdc, data & 0x04); + + upd765_reset_w(fdc, !(data & 0x08)); +} + +/************************************* + * + * I/O port F7: memory mapping + * + *************************************/ + +static void elwro800jr_mmu_w(running_machine &machine, UINT8 data) +{ + UINT8 *prom = machine.root_device().memregion("proms")->base() + 0x200; + UINT8 *messram = machine.device<ram_device>(RAM_TAG)->pointer(); + UINT8 cs; + UINT8 ls175; + elwro800_state *state = machine.driver_data<elwro800_state>(); + + ls175 = BITSWAP8(data, 7, 6, 5, 4, 4, 5, 7, 6) & 0x0f; + + cs = prom[((0x0000 >> 10) | (ls175 << 6)) & 0x1ff]; + if (!BIT(cs,0)) + { + // rom BAS0 + state->membank("bank1")->set_base(state->memregion("maincpu")->base() + 0x0000); /* BAS0 ROM */ + machine.device("maincpu")->memory().space(AS_PROGRAM)->nop_write(0x0000, 0x1fff); + state->m_ram_at_0000 = 0; + } + else if (!BIT(cs,4)) + { + // rom BOOT + state->membank("bank1")->set_base(machine.root_device().memregion("maincpu")->base() + 0x4000); /* BOOT ROM */ + machine.device("maincpu")->memory().space(AS_PROGRAM)->nop_write(0x0000, 0x1fff); + state->m_ram_at_0000 = 0; + } + else + { + // RAM + state->membank("bank1")->set_base(messram); + machine.device("maincpu")->memory().space(AS_PROGRAM)->install_write_bank(0x0000, 0x1fff, "bank1"); + state->m_ram_at_0000 = 1; + } + + cs = prom[((0x2000 >> 10) | (ls175 << 6)) & 0x1ff]; + if (!BIT(cs,1)) + { + state->membank("bank2")->set_base(machine.root_device().memregion("maincpu")->base() + 0x2000); /* BAS1 ROM */ + machine.device("maincpu")->memory().space(AS_PROGRAM)->nop_write(0x2000, 0x3fff); + } + else + { + state->membank("bank2")->set_base(messram + 0x2000); /* RAM */ + machine.device("maincpu")->memory().space(AS_PROGRAM)->install_write_bank(0x2000, 0x3fff, "bank2"); + } + + if (BIT(ls175,2)) + { + // relok + state->m_screen_location = messram + 0xe000; + } + else + { + state->m_screen_location = messram + 0x4000; + } + + state->m_NR = BIT(ls175,3); + if (BIT(ls175,3)) + { + logerror("Reading network number\n"); + } +} + +/************************************* + * + * 8255: joystick and Centronics printer connections + * + *************************************/ + +static READ8_DEVICE_HANDLER(i8255_port_c_r) +{ + centronics_device *centronics = device->machine().device<centronics_device>("centronics"); + return (centronics->ack_r() << 2); +} + +static WRITE8_DEVICE_HANDLER(i8255_port_c_w) +{ + centronics_device *centronics = device->machine().device<centronics_device>("centronics"); + centronics->strobe_w((data >> 7) & 0x01); +} + +static I8255_INTERFACE(elwro800jr_ppi8255_interface) +{ + DEVCB_INPUT_PORT("JOY"), + DEVCB_NULL, + DEVCB_DEVICE_MEMBER("centronics", centronics_device, read), + DEVCB_DEVICE_MEMBER("centronics", centronics_device, write), + DEVCB_HANDLER(i8255_port_c_r), + DEVCB_HANDLER(i8255_port_c_w) +}; + +static const centronics_interface elwro800jr_centronics_interface = +{ + DEVCB_DEVICE_LINE_MEMBER("ppi8255", i8255_device, pc2_w), + DEVCB_NULL, + DEVCB_NULL +}; + +/************************************* + * + * I/O reads and writes + * + * I/O accesses are decoded by prom which uses 8 low address lines (A0-A8) as input + * and outputs chip select signals for system components. Standard addresses are: + * + * 0x1F: 8255 port A (joystick) + * 0xBE: 8251 data (Junet network) + * 0xBF: 8251 control/status (Junet network) + * 0xDC: 8255 control + * 0xDD: 8255 port C (centronics 7-strobe, 2-ack) + * 0xDE: 8255 port B (centronics data) + * 0xDF: 8255 port A (joystick) + * 0xEE: FDC 765A status + * 0xEF: FDC 765A command and data + * 0xF1: FDC control (motor on/off) + * 0xF7: memory banking + * 0xFE (write): border color, speaker and tape (as in Spectrum) + * 0x??FE, 0x??7F, 0x??7B (read): keyboard reading + *************************************/ + +READ8_MEMBER(elwro800_state::elwro800jr_io_r) +{ + UINT8 *prom = memregion("proms")->base(); + UINT8 cs = prom[offset & 0x1ff]; + + if (!BIT(cs,0)) + { + // CFE + int mask = 0x8000; + int data = 0xff; + int i; + char port_name[6] = "LINE0"; + + if ( !m_NR ) + { + for (i = 0; i < 9; mask >>= 1, i++) + { + if (!(offset & mask)) + { + if (i == 8) + { + port_name[4] = '8'; + } + else + { + port_name[4] = '0' + (7 - i); + } + data &= (ioport(port_name)->read()); + } + } + + if ((offset & 0xff) == 0xfb) + { + data &= ioport("LINE9")->read(); + } + + /* cassette input from wav */ + if ((machine().device<cassette_image_device>(CASSETTE_TAG))->input() > 0.0038 ) + { + data &= ~0x40; + } + } + else + { + data = ioport("NETWORK ID")->read(); + } + + return data; + } + else if (!BIT(cs,1)) + { + // CF7 + } + else if (!BIT(cs,2)) + { + // CS55 + i8255_device *ppi = machine().device<i8255_device>("ppi8255"); + return ppi->read(space, (offset & 0x03) ^ 0x03); + } + else if (!BIT(cs,3)) + { + // CSFDC + device_t *fdc = machine().device("upd765"); + if (offset & 1) + { + return upd765_data_r(fdc,0); + } + else + { + return upd765_status_r(fdc,0); + } + } + else if (!BIT(cs,4)) + { + // CS51 + i8251_device *usart = machine().device<i8251_device>("i8251"); + if (offset & 1) + { + return usart->status_r(space, 0); + } + else + { + return usart->data_r(space, 0); + } + } + else if (!BIT(cs,5)) + { + // CF1 + } + else + { + logerror("Unmapped I/O read: %04x\n", offset); + } + return 0x00; +} + +WRITE8_MEMBER(elwro800_state::elwro800jr_io_w) +{ + UINT8 *prom = memregion("proms")->base(); + UINT8 cs = prom[offset & 0x1ff]; + + if (!BIT(cs,0)) + { + // CFE + spectrum_port_fe_w(space, 0, data); + } + else if (!BIT(cs,1)) + { + // CF7 + elwro800jr_mmu_w(machine(), data); + } + else if (!BIT(cs,2)) + { + // CS55 + i8255_device *ppi = machine().device<i8255_device>("ppi8255"); + ppi->write(space, (offset & 0x03) ^ 0x03, data); + } + else if (!BIT(cs,3)) + { + // CSFDC + device_t *fdc = machine().device("upd765"); + if (offset & 1) + { + upd765_data_w(fdc, 0, data); + } + } + else if (!BIT(cs,4)) + { + // CS51 + i8251_device *usart = machine().device<i8251_device>("i8251"); + if (offset & 1) + { + usart->control_w(space, 0, data); + } + else + { + usart->data_w(space, 0, data); + } + } + else if (!BIT(cs,5)) + { + // CF1 + elwro800jr_fdc_control_w(space, 0, data); + } + else + { + logerror("Unmapped I/O write: %04x %02x\n", offset, data); + } +} + +/************************************* + * + * Memory maps + * + *************************************/ + +static ADDRESS_MAP_START(elwro800_mem, AS_PROGRAM, 8, elwro800_state ) + AM_RANGE(0x0000, 0x1fff) AM_RAMBANK("bank1") + AM_RANGE(0x2000, 0x3fff) AM_RAMBANK("bank2") + AM_RANGE(0x4000, 0xffff) AM_RAMBANK("bank3") +ADDRESS_MAP_END + +static ADDRESS_MAP_START(elwro800_io, AS_IO, 8, elwro800_state ) + AM_RANGE(0x0000, 0xffff) AM_READWRITE(elwro800jr_io_r, elwro800jr_io_w) +ADDRESS_MAP_END + +/************************************* + * + * Input ports + * + *************************************/ + +static INPUT_PORTS_START( elwro800 ) + PORT_START("LINE0") /* 0xFEFE */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CAPS SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(": *") PORT_CODE(KEYCODE_ASTERISK) PORT_CHAR(':') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("; +") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') + + PORT_START("LINE1") /* 0xFDFE */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("- =") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("[ {") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') + + PORT_START("LINE2") /* 0xFBFE */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') + + PORT_START("LINE3") /* 0xF7FE */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 @") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("@ \\") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('@') + + PORT_START("LINE4") /* 0xEFFE */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0 _") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('_') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 )") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 (") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 '") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 &") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("DEL") PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(DEL)) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("] }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') + + PORT_START("LINE5") /* 0xDFFE */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC)) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("BS") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(UCHAR_MAMEKEY(BACKSPACE)) + + PORT_START("LINE6") /* 0xBFFE */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("TAB") PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t') + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SHIFT LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) + + PORT_START("LINE7") /* 0x7FFE */ + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SYMBOL SHIFT") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_2) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("^ -") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('^') PORT_CHAR('-') + + PORT_START("LINE8") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xC4\x98") PORT_CODE(KEYCODE_0_PAD) // LATIN CAPITAL LETTER E WITH OGONEK + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xC3\x93") PORT_CODE(KEYCODE_1_PAD) // LATIN CAPITAL LETTER O WITH ACUTE + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xC5\x9A") PORT_CODE(KEYCODE_2_PAD) // LATIN CAPITAL LETTER S WITH ACUTE + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xC5\x81") PORT_CODE(KEYCODE_3_PAD) // LATIN CAPITAL LETTER L WITH STROKE + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xC5\xB9") PORT_CODE(KEYCODE_4_PAD) // LATIN CAPITAL LETTER Z WITH ACUTE + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xC5\x83") PORT_CODE(KEYCODE_5_PAD) // LATIN CAPITAL LETTER N WITH ACUTE + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xC4\x84") PORT_CODE(KEYCODE_6_PAD) // LATIN CAPITAL LETTER A WITH OGONEK + + PORT_START("LINE9") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("DIR") PORT_CODE(KEYCODE_HOME) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Cursor Down") PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Cursor Up") PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Cursor Right") PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Cursor Left") PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) + PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xC4\x86") PORT_CODE(KEYCODE_7_PAD) // LATIN CAPITAL LETTER C WITH ACUTE + PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\xC5\xBB") PORT_CODE(KEYCODE_8_PAD) // LATIN CAPITAL LETTER Z WITH DOT ABOVE + + PORT_START("JOY") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P1 Joystick Right") PORT_CODE(JOYCODE_X_RIGHT_SWITCH) + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P1 Joystick Left") PORT_CODE(JOYCODE_X_LEFT_SWITCH) + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P1 Joystick Down") PORT_CODE(JOYCODE_Y_DOWN_SWITCH) + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P1 Joystick Up") PORT_CODE(JOYCODE_Y_UP_SWITCH) + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_NAME("P1 Joystick Fire") PORT_CODE(JOYCODE_BUTTON1) + + PORT_START("NETWORK ID") + PORT_DIPNAME( 0x3f, 0x01, "Computer network ID" ) + PORT_DIPSETTING( 0x01, "1" ) + PORT_DIPSETTING( 0x10, "16" ) + PORT_DIPSETTING( 0x11, "17" ) + +INPUT_PORTS_END + +/************************************* + * + * Machine + * + *************************************/ + +static MACHINE_RESET(elwro800) +{ + elwro800_state *state = machine.driver_data<elwro800_state>(); + UINT8 *messram = machine.device<ram_device>(RAM_TAG)->pointer(); + + state->m_df_on_databus = 0xdf; + memset(messram, 0, 64*1024); + + state->membank("bank3")->set_base(messram + 0x4000); + + state->m_port_7ffd_data = 0; + state->m_port_1ffd_data = -1; + + // this is a reset of ls175 in mmu + elwro800jr_mmu_w(machine, 0); + + machine.device("maincpu")->memory().space(AS_PROGRAM)->set_direct_update_handler(direct_update_delegate(FUNC(elwro800_state::elwro800_direct_handler), state)); +} + +static const cassette_interface elwro800jr_cassette_interface = +{ + tzx_cassette_formats, + NULL, + (cassette_state)(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED), + NULL, + NULL +}; + +static INTERRUPT_GEN( elwro800jr_interrupt ) +{ + device_set_input_line(device, 0, HOLD_LINE); +} + +static const floppy_interface elwro800jr_floppy_interface = +{ + DEVCB_NULL, + DEVCB_NULL, + DEVCB_NULL, + DEVCB_NULL, + DEVCB_NULL, + FLOPPY_STANDARD_5_25_DSHD, + LEGACY_FLOPPY_OPTIONS_NAME(default), + NULL, + NULL +}; + +/* F4 Character Displayer */ +static const gfx_layout elwro800_charlayout = +{ + 8, 8, /* 8 x 8 characters */ + 128, /* 128 characters */ + 1, /* 1 bits per pixel */ + { 0 }, /* no bitplanes */ + /* x offsets */ + { 0, 1, 2, 3, 4, 5, 6, 7 }, + /* y offsets */ + { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, + 8*8 /* every char takes 8 bytes */ +}; + +static GFXDECODE_START( elwro800 ) + GFXDECODE_ENTRY( "maincpu", 0x3c00, elwro800_charlayout, 0, 8 ) +GFXDECODE_END + + +static MACHINE_CONFIG_START( elwro800, elwro800_state ) + + /* basic machine hardware */ + MCFG_CPU_ADD("maincpu",Z80, 3500000) /* 3.5 MHz */ + MCFG_CPU_PROGRAM_MAP(elwro800_mem) + MCFG_CPU_IO_MAP(elwro800_io) + MCFG_CPU_VBLANK_INT("screen", elwro800jr_interrupt) + + MCFG_MACHINE_RESET(elwro800) + + /* video hardware */ + MCFG_SCREEN_ADD("screen", RASTER) + MCFG_SCREEN_REFRESH_RATE(50.08) + MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ + MCFG_SCREEN_SIZE(SPEC_SCREEN_WIDTH, SPEC_SCREEN_HEIGHT) + MCFG_SCREEN_VISIBLE_AREA(0, SPEC_SCREEN_WIDTH-1, 0, SPEC_SCREEN_HEIGHT-1) + MCFG_SCREEN_UPDATE_STATIC( spectrum ) + MCFG_SCREEN_VBLANK_STATIC( spectrum ) + + MCFG_PALETTE_LENGTH(16) + MCFG_PALETTE_INIT( spectrum ) + MCFG_GFXDECODE(elwro800) + + MCFG_VIDEO_START( spectrum ) + + MCFG_UPD765A_ADD("upd765", elwro800jr_upd765_interface) + MCFG_I8255A_ADD( "ppi8255", elwro800jr_ppi8255_interface) + + /* printer */ + MCFG_CENTRONICS_PRINTER_ADD("centronics", elwro800jr_centronics_interface) + + MCFG_I8251_ADD("i8251", default_i8251_interface) + + /* sound hardware */ + MCFG_SPEAKER_STANDARD_MONO("mono") + MCFG_SOUND_WAVE_ADD(WAVE_TAG, CASSETTE_TAG) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) + MCFG_SOUND_ADD(SPEAKER_TAG, SPEAKER_SOUND, 0) + MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50) + + MCFG_CASSETTE_ADD( CASSETTE_TAG, elwro800jr_cassette_interface ) + + MCFG_LEGACY_FLOPPY_2_DRIVES_ADD(elwro800jr_floppy_interface) + + /* internal ram */ + MCFG_RAM_ADD(RAM_TAG) + MCFG_RAM_DEFAULT_SIZE("64K") +MACHINE_CONFIG_END + +/************************************* + * + * ROM definition + * + *************************************/ + +ROM_START( elwro800 ) + ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) + ROM_LOAD( "bas04.epr", 0x0000, 0x2000, CRC(6ab16f36) SHA1(49a19b279f311279c7fed3d2b3f207732d674c26) ) + ROM_LOAD( "bas14.epr", 0x2000, 0x2000, CRC(a743eb80) SHA1(3a300550838535b4adfe6d05c05fe0b39c47df16) ) + ROM_LOAD( "bootv.epr", 0x4000, 0x2000, CRC(de5fa37d) SHA1(4f203efe53524d84f69459c54b1a0296faa83fd9) ) + + ROM_REGION(0x0400, "proms", 0 ) + ROM_LOAD( "junior_io_prom.bin", 0x0000, 0x0200, CRC(c6a777c4) SHA1(41debc1b4c3bd4eef7e0e572327c759e0399a49c)) + ROM_LOAD( "junior_mem_prom.bin", 0x0200, 0x0200, CRC(0f745f42) SHA1(360ec23887fb6d7e19ee85d2bb30d9fa57f4936e)) +ROM_END + +/* Driver */ + +/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ +COMP( 1986, elwro800, 0, 0, elwro800, elwro800, driver_device, 0, "Elwro", "800 Junior", 0) |