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author Miodrag Milanovic <mmicko@gmail.com>2012-08-21 10:41:19 +0000
committer Miodrag Milanovic <mmicko@gmail.com>2012-08-21 10:41:19 +0000
commit7285b359d259b2ae0fdf85096571c386ec8c991a (patch)
treea027aff57f1a255f9ec6cfd3b68cabe4b6683998 /src/mess/drivers/elwro800.c
parent67c425e90757876a6716b7867df30c0149912e74 (diff)
Merge of MESS sources (no whatsnew)
Diffstat (limited to 'src/mess/drivers/elwro800.c')
-rw-r--r--src/mess/drivers/elwro800.c644
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)