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mame/src/mess/drivers/elwro800.c

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/***************************************************************************
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);
DECLARE_MACHINE_RESET(elwro800);
INTERRUPT_GEN_MEMBER(elwro800jr_interrupt);
};
/*************************************
*
* 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 = space.machine().device<centronics_device>("centronics");
return (centronics->ack_r() << 2);
}
static WRITE8_DEVICE_HANDLER(i8255_port_c_w)
{
centronics_device *centronics = space.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,space, 0);
}
else
{
return upd765_status_r(fdc,space, 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, space, 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
*
*************************************/
MACHINE_RESET_MEMBER(elwro800_state,elwro800)
{
UINT8 *messram = machine().device<ram_device>(RAM_TAG)->pointer();
m_df_on_databus = 0xdf;
memset(messram, 0, 64*1024);
membank("bank3")->set_base(messram + 0x4000);
m_port_7ffd_data = 0;
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), this));
}
static const cassette_interface elwro800jr_cassette_interface =
{
tzx_cassette_formats,
NULL,
(cassette_state)(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED),
NULL,
NULL
};
INTERRUPT_GEN_MEMBER(elwro800_state::elwro800jr_interrupt)
{
device.execute().set_input_line(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_DRIVER("screen", elwro800_state, elwro800jr_interrupt)
MCFG_MACHINE_RESET_OVERRIDE(elwro800_state,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_DRIVER(elwro800_state, screen_update_spectrum )
MCFG_SCREEN_VBLANK_DRIVER(elwro800_state, screen_eof_spectrum)
MCFG_PALETTE_LENGTH(16)
MCFG_PALETTE_INIT_OVERRIDE(elwro800_state, spectrum )
MCFG_GFXDECODE(elwro800)
MCFG_VIDEO_START_OVERRIDE(elwro800_state, 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)
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