// license:BSD-3-Clause
// copyright-holders:Mariusz Wojcieszek
/***************************************************************************
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 "bus/centronics/ctronics.h"
#include "machine/i8251.h"
/* Devices */
#include "imagedev/cassette.h"
#include "imagedev/floppy.h"
#include "formats/tzx_cas.h"
#include "machine/bankdev.h"
#include "screen.h"
#include "speaker.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),
m_i8251(*this, "i8251"),
m_i8255(*this, "ppi8255"),
m_centronics(*this, "centronics"),
m_upd765(*this, "upd765"),
m_flop(*this, "upd765:%u", 0U),
m_bank1(*this, "bank1"),
m_bank2(*this, "bank2"),
m_io_ports(*this, {"LINE7", "LINE6", "LINE5", "LINE4", "LINE3", "LINE2", "LINE1", "LINE0", "LINE8"}),
m_io_line9(*this, "LINE9"),
m_io_network_id(*this, "NETWORK ID")
{
}
void elwro800(machine_config &config);
private:
/* for elwro800 */
/* RAM mapped at 0 */
uint8_t m_ram_at_0000;
/* NR signal */
uint8_t m_NR;
uint8_t nmi_r();
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);
DECLARE_READ8_MEMBER(i8255_port_c_r);
DECLARE_WRITE8_MEMBER(i8255_port_c_w);
DECLARE_WRITE_LINE_MEMBER(write_centronics_ack);
void elwro800_bank1(address_map &map);
void elwro800_bank2(address_map &map);
void elwro800_io(address_map &map);
void elwro800_m1(address_map &map);
void elwro800_mem(address_map &map);
required_device<i8251_device> m_i8251;
required_device<i8255_device> m_i8255;
required_device<centronics_device> m_centronics;
required_device<upd765a_device> m_upd765;
required_device_array<floppy_connector, 2> m_flop;
required_device<address_map_bank_device> m_bank1;
required_device<address_map_bank_device> m_bank2;
required_ioport_array<9> m_io_ports;
required_ioport m_io_line9;
required_ioport m_io_network_id;
void elwro800jr_mmu_w(uint8_t data);
int m_centronics_ack;
};
/*************************************
*
* 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)
*
*************************************/
uint8_t elwro800_state::nmi_r()
{
if (m_ram_at_0000)
return 0xdf;
else
return m_bank1->read8(0x66);
}
/*************************************
*
* UPD765/Floppy drive
*
*************************************/
WRITE8_MEMBER(elwro800_state::elwro800jr_fdc_control_w)
{
for (int i = 0; i < 2; i++)
if (m_flop[i]->get_device())
m_flop[i]->get_device()->mon_w(!BIT(data, i));
m_upd765->tc_w(data & 0x04);
if(!(data & 8))
m_upd765->reset();
}
/*************************************
*
* I/O port F7: memory mapping
*
*************************************/
void elwro800_state::elwro800jr_mmu_w(uint8_t data)
{
uint8_t *prom = memregion("proms")->base() + 0x200;
uint8_t *messram = m_ram->pointer();
uint8_t cs;
uint8_t ls175;
ls175 = bitswap<8>(data, 7, 6, 5, 4, 4, 5, 7, 6) & 0x0f;
cs = prom[((0x0000 >> 10) | (ls175 << 6)) & 0x1ff];
if (!BIT(cs,0))
{
// rom BAS0
m_bank1->set_bank(1);
m_ram_at_0000 = 0;
}
else if (!BIT(cs,4))
{
// rom BOOT
m_bank1->set_bank(2);
m_ram_at_0000 = 0;
}
else
{
// RAM
m_bank1->set_bank(0);
m_ram_at_0000 = 1;
}
cs = prom[((0x2000 >> 10) | (ls175 << 6)) & 0x1ff];
if (!BIT(cs,1))
{
m_bank2->set_bank(1); // BAS1 ROM
}
else
{
m_bank2->set_bank(0); // RAM
}
if (BIT(ls175,2))
{
// relok
m_screen_location = messram + 0xe000;
}
else
{
m_screen_location = messram + 0x4000;
}
m_NR = BIT(ls175,3);
if (BIT(ls175,3))
{
logerror("Reading network number\n");
}
}
/*************************************
*
* 8255: joystick and Centronics printer connections
*
*************************************/
WRITE_LINE_MEMBER(elwro800_state::write_centronics_ack)
{
m_centronics_ack = state;
m_i8255->pc2_w(state);
}
READ8_MEMBER(elwro800_state::i8255_port_c_r)
{
return m_centronics_ack << 2;
}
WRITE8_MEMBER(elwro800_state::i8255_port_c_w)
{
m_centronics->write_strobe((data >> 7) & 0x01);
}
/*************************************
*
* 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_t *prom = memregion("proms")->base();
uint8_t cs = prom[offset & 0x1ff];
if (!BIT(cs,0))
{
// CFE
int mask = 0x8000;
int data = 0xff;
int i;
if ( !m_NR )
{
for (i = 0; i < 9; mask >>= 1, i++)
{
if (!(offset & mask))
{
data &= m_io_ports[i]->read();
}
}
if ((offset & 0xff) == 0xfb)
{
data &= m_io_line9->read();
}
/* cassette input from wav */
if (m_cassette->input() > 0.0038 )
{
data |= 0x40;
}
}
else
{
data = m_io_network_id->read();
}
return data;
}
else if (!BIT(cs,1))
{
// CF7
}
else if (!BIT(cs,2))
{
// CS55
return m_i8255->read((offset & 0x03) ^ 0x03);
}
else if (!BIT(cs,3))
{
// CSFDC
if (offset & 1)
{
return m_upd765->fifo_r();
}
else
{
return m_upd765->msr_r();
}
}
else if (!BIT(cs,4))
{
// CS51
return m_i8251->read(offset & 1);
}
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_t *prom = memregion("proms")->base();
uint8_t 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(data);
}
else if (!BIT(cs,2))
{
// CS55
m_i8255->write((offset & 0x03) ^ 0x03, data);
}
else if (!BIT(cs,3))
{
// CSFDC
if (offset & 1)
{
m_upd765->fifo_w(data);
}
}
else if (!BIT(cs,4))
{
// CS51
m_i8251->write(offset & 1, 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
*
*************************************/
void elwro800_state::elwro800_mem(address_map &map)
{
map(0x0000, 0x1fff).m(m_bank1, FUNC(address_map_bank_device::amap8));
map(0x2000, 0x3fff).m(m_bank2, FUNC(address_map_bank_device::amap8));
map(0x4000, 0xffff).bankrw("rambank3");
}
void elwro800_state::elwro800_io(address_map &map)
{
map(0x0000, 0xffff).rw(FUNC(elwro800_state::elwro800jr_io_r), FUNC(elwro800_state::elwro800jr_io_w));
}
void elwro800_state::elwro800_m1(address_map &map)
{
map(0x0000, 0x1fff).m(m_bank1, FUNC(address_map_bank_device::amap8));
map(0x0066, 0x0066).r(FUNC(elwro800_state::nmi_r));
map(0x2000, 0x3fff).m(m_bank2, FUNC(address_map_bank_device::amap8));
map(0x4000, 0xffff).bankrw("rambank3");
}
void elwro800_state::elwro800_bank1(address_map &map)
{
map(0x0000, 0x1fff).bankrw("rambank1");
map(0x2000, 0x3fff).rom().region("maincpu", 0x0000).nopw(); // BAS0 ROM
map(0x4000, 0x5fff).rom().region("maincpu", 0x4000).nopw(); // BOOT ROM
}
void elwro800_state::elwro800_bank2(address_map &map)
{
map(0x0000, 0x1fff).bankrw("rambank2");
map(0x2000, 0x3fff).rom().region("maincpu", 0x2000).nopw(); // BAS1 ROM
}
/*************************************
*
* 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_t *messram = m_ram->pointer();
memset(messram, 0, 64*1024);
membank("rambank1")->set_base(messram + 0x0000);
membank("rambank2")->set_base(messram + 0x2000);
membank("rambank3")->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(0);
}
INTERRUPT_GEN_MEMBER(elwro800_state::elwro800jr_interrupt)
{
device.execute().set_input_line(0, HOLD_LINE);
}
static void elwro800jr_floppies(device_slot_interface &device)
{
device.option_add("525hd", FLOPPY_525_HD);
}
/* 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( gfx_elwro800 )
GFXDECODE_ENTRY( "maincpu", 0x3c00, elwro800_charlayout, 0, 8 )
GFXDECODE_END
void elwro800_state::elwro800(machine_config &config)
{
/* basic machine hardware */
Z80(config, m_maincpu, 14_MHz_XTAL / 4); /* 3.5 MHz */
m_maincpu->set_addrmap(AS_PROGRAM, &elwro800_state::elwro800_mem);
m_maincpu->set_addrmap(AS_IO, &elwro800_state::elwro800_io);
m_maincpu->set_addrmap(AS_OPCODES, &elwro800_state::elwro800_m1);
m_maincpu->set_vblank_int("screen", FUNC(elwro800_state::elwro800jr_interrupt));
MCFG_MACHINE_RESET_OVERRIDE(elwro800_state,elwro800)
/* video hardware */
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
screen.set_raw(14_MHz_XTAL / 2, 448, 0, SPEC_SCREEN_WIDTH, 312, 0, SPEC_SCREEN_HEIGHT);
// Sync and interrupt timings determined by 2716 EPROM
screen.set_screen_update(FUNC(elwro800_state::screen_update_spectrum));
screen.screen_vblank().set(FUNC(elwro800_state::screen_vblank_spectrum));
screen.set_palette("palette");
PALETTE(config, "palette", FUNC(elwro800_state::spectrum_palette), 16);
GFXDECODE(config, "gfxdecode", "palette", gfx_elwro800);
MCFG_VIDEO_START_OVERRIDE(elwro800_state, spectrum)
UPD765A(config, "upd765", 8_MHz_XTAL / 2, true, true);
I8255A(config, m_i8255, 0);
m_i8255->in_pa_callback().set_ioport("JOY");
m_i8255->in_pb_callback().set("cent_data_in", FUNC(input_buffer_device::read));
m_i8255->out_pb_callback().set("cent_data_out", FUNC(output_latch_device::write));
m_i8255->in_pc_callback().set(FUNC(elwro800_state::i8255_port_c_r));
m_i8255->out_pc_callback().set(FUNC(elwro800_state::i8255_port_c_w));
/* printer */
CENTRONICS(config, m_centronics, centronics_devices, "printer");
m_centronics->set_data_input_buffer("cent_data_in");
m_centronics->ack_handler().set(FUNC(elwro800_state::write_centronics_ack));
INPUT_BUFFER(config, "cent_data_in");
output_latch_device ¢_data_out(OUTPUT_LATCH(config, "cent_data_out"));
m_centronics->set_output_latch(cent_data_out);
I8251(config, m_i8251, 14_MHz_XTAL / 4);
/* sound hardware */
SPEAKER(config, "mono").front_center();
SPEAKER_SOUND(config, "speaker").add_route(ALL_OUTPUTS, "mono", 0.50);
CASSETTE(config, m_cassette);
m_cassette->set_formats(tzx_cassette_formats);
m_cassette->set_default_state(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED);
m_cassette->add_route(ALL_OUTPUTS, "mono", 0.05);
FLOPPY_CONNECTOR(config, "upd765:0", elwro800jr_floppies, "525hd", floppy_image_device::default_floppy_formats);
FLOPPY_CONNECTOR(config, "upd765:1", elwro800jr_floppies, "525hd", floppy_image_device::default_floppy_formats);
/* internal ram */
RAM(config, RAM_TAG).set_default_size("64K");
ADDRESS_MAP_BANK(config, "bank1").set_map(&elwro800_state::elwro800_bank1).set_data_width(8).set_stride(0x2000);
ADDRESS_MAP_BANK(config, "bank2").set_map(&elwro800_state::elwro800_bank2).set_data_width(8).set_stride(0x2000);
}
/*************************************
*
* 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(0x0c00, "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_LOAD( "tv_2716.e11", 0x0400, 0x0800, CRC(6093e80e) SHA1(a4972f336490d15222f4f24369f1f3253cfb9516) )
ROM_END
/* Driver */
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1986, elwro800, 0, 0, elwro800, elwro800, elwro800_state, empty_init, "Elwro", "800 Junior", 0 )