mirror of
https://github.com/holub/mame
synced 2025-05-16 19:00:43 +03:00
280 lines
8.7 KiB
C
280 lines
8.7 KiB
C
/* Xyonix *********************************************************************
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driver by David Haywood and Stephh
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Notes about the board:
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Ram is 2x 6264 (near Z80) and 1x 6264 near UM6845. Xtal is verified 16.000MHz,
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I can also see another special chip . PHILKO PK8801. chip looks about the same as a
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TMS3615 (though i have no idea what the chip actually is). its located next to the
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prom, the 2x 256k roms, and the 1x 6264 ram.
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Dip SW is 1 x 8-position
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on the PCB is an empty socket. written next to the socket is 68705P3. "oh no" you
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say..... well, its unpopulated, so maybe it was never used?
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TODO:
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- there are some more unknown commands for the I/O chip
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******************************************************************************/
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#include "emu.h"
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#include "cpu/z80/z80.h"
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#include "sound/sn76496.h"
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#include "includes/xyonix.h"
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WRITE8_MEMBER(xyonix_state::xyonix_irqack_w)
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{
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machine().device("maincpu")->execute().set_input_line(0, CLEAR_LINE);
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}
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/* Inputs ********************************************************************/
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void xyonix_state::handle_coins(int coin)
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{
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static const int coinage_table[4][2] = {{2,3},{2,1},{1,2},{1,1}};
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int tmp = 0;
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//popmessage("Coin %d", m_coin);
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if (coin & 1) // Coin 2 !
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{
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tmp = (ioport("DSW")->read() & 0xc0) >> 6;
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m_coins++;
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if (m_coins >= coinage_table[tmp][0])
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{
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m_credits += coinage_table[tmp][1];
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m_coins -= coinage_table[tmp][0];
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}
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coin_lockout_global_w(machine(), 0); /* Unlock all coin slots */
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coin_counter_w(machine(),1,1); coin_counter_w(machine(),1,0); /* Count slot B */
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}
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if (coin & 2) // Coin 1 !
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{
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tmp = (machine().root_device().ioport("DSW")->read() & 0x30) >> 4;
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m_coins++;
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if (m_coins >= coinage_table[tmp][0])
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{
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m_credits += coinage_table[tmp][1];
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m_coins -= coinage_table[tmp][0];
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}
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coin_lockout_global_w(machine(), 0); /* Unlock all coin slots */
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coin_counter_w(machine(),0,1); coin_counter_w(machine(),0,0); /* Count slot A */
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}
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if (m_credits >= 9)
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m_credits = 9;
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}
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READ8_MEMBER(xyonix_state::xyonix_io_r)
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{
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int regPC = space.device().safe_pc();
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if (regPC == 0x27ba)
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return 0x88;
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if (regPC == 0x27c2)
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return m_e0_data;
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if (regPC == 0x27c7)
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{
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int coin;
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switch (m_e0_data)
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{
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case 0x81 :
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return ioport("P1")->read() & 0x7f;
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case 0x82 :
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return ioport("P2")->read() & 0x7f;
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case 0x91:
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/* check coin inputs */
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coin = ((ioport("P1")->read() & 0x80) >> 7) | ((ioport("P2")->read() & 0x80) >> 6);
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if (coin ^ m_prev_coin && coin != 3)
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{
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if (m_credits < 9) handle_coins(coin);
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}
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m_prev_coin = coin;
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return m_credits;
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case 0x92:
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return ((ioport("P1")->read() & 0x80) >> 7) | ((ioport("P2")->read() & 0x80) >> 6);
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case 0xe0: /* reset? */
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m_coins = 0;
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m_credits = 0;
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return 0xff;
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case 0xe1:
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m_credits--;
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return 0xff;
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case 0xfe: /* Dip Switches 1 to 4 */
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return ioport("DSW")->read() & 0x0f;
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case 0xff: /* Dip Switches 5 to 8 */
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return ioport("DSW")->read() >> 4;
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}
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}
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//logerror ("xyonix_port_e0_r - PC = %04x - port = %02x\n", regPC, m_e0_data);
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//popmessage("%02x",m_e0_data);
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return 0xff;
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}
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WRITE8_MEMBER(xyonix_state::xyonix_io_w)
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{
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//logerror ("xyonix_port_e0_w %02x - PC = %04x\n", data, space.device().safe_pc());
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m_e0_data = data;
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}
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/* Mem / Port Maps ***********************************************************/
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static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8, xyonix_state )
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AM_RANGE(0x0000, 0xbfff) AM_ROM
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AM_RANGE(0xc000, 0xdfff) AM_RAM
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AM_RANGE(0xe000, 0xffff) AM_RAM_WRITE(xyonix_vidram_w) AM_SHARE("vidram")
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ADDRESS_MAP_END
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static ADDRESS_MAP_START( port_map, AS_IO, 8, xyonix_state )
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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AM_RANGE(0x20, 0x20) AM_READNOP AM_DEVWRITE("sn1", sn76496_device, write) /* SN76496 ready signal */
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AM_RANGE(0x21, 0x21) AM_READNOP AM_DEVWRITE("sn2", sn76496_device, write)
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AM_RANGE(0x40, 0x40) AM_WRITENOP /* NMI ack? */
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AM_RANGE(0x50, 0x50) AM_WRITE(xyonix_irqack_w)
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AM_RANGE(0x60, 0x61) AM_WRITENOP /* mc6845 */
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AM_RANGE(0xe0, 0xe0) AM_READWRITE(xyonix_io_r, xyonix_io_w)
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ADDRESS_MAP_END
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/* Inputs Ports **************************************************************/
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static INPUT_PORTS_START( xyonix )
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PORT_START("P1")
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PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
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PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
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PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
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PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
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PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
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PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
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PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START1 )
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PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 ) /* handled by xyonix_io_r() */
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PORT_START("P2")
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PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
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PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
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PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
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PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
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PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
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PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
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PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
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PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 ) /* handled by xyonix_io_r() */
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PORT_START("DSW")
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PORT_DIPNAME( 0x03, 0x03, DEF_STR( Difficulty ) )
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PORT_DIPSETTING( 0x03, DEF_STR( Easy ) )
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PORT_DIPSETTING( 0x02, DEF_STR( Normal ) )
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PORT_DIPSETTING( 0x01, DEF_STR( Hard ) )
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PORT_DIPSETTING( 0x00, DEF_STR( Hardest ) ) // DEF_STR( Very_Hard )
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PORT_DIPNAME( 0x04, 0x00, DEF_STR( Allow_Continue ) )
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PORT_DIPSETTING( 0x04, DEF_STR( No ) )
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PORT_DIPSETTING( 0x00, DEF_STR( Yes ) )
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PORT_SERVICE( 0x08, IP_ACTIVE_LOW )
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PORT_DIPNAME( 0x30, 0x30, DEF_STR( Coin_A ) )
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PORT_DIPSETTING( 0x10, DEF_STR( 2C_1C ) )
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PORT_DIPSETTING( 0x30, DEF_STR( 1C_1C ) )
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PORT_DIPSETTING( 0x00, DEF_STR( 2C_3C ) )
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PORT_DIPSETTING( 0x20, DEF_STR( 1C_2C ) )
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PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Coin_B ) )
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PORT_DIPSETTING( 0x40, DEF_STR( 2C_1C ) )
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PORT_DIPSETTING( 0xc0, DEF_STR( 1C_1C ) )
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PORT_DIPSETTING( 0x00, DEF_STR( 2C_3C ) )
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PORT_DIPSETTING( 0x80, DEF_STR( 1C_2C ) )
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INPUT_PORTS_END
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/* GFX Decode ****************************************************************/
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static const gfx_layout charlayout =
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{
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4,8,
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RGN_FRAC(1,2),
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4,
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{ 0, 4, RGN_FRAC(1,2)+0, RGN_FRAC(1,2)+4 },
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{ 3, 2, 1, 0 },
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{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
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4*16
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};
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static GFXDECODE_START( xyonix )
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GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 16 )
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GFXDECODE_END
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/*************************************
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*
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* Sound interface
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*
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*************************************/
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//-------------------------------------------------
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// sn76496_config psg_intf
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//-------------------------------------------------
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static const sn76496_config psg_intf =
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{
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DEVCB_NULL
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};
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/* MACHINE driver *************************************************************/
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static MACHINE_CONFIG_START( xyonix, xyonix_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu", Z80,16000000 / 4) /* 4 MHz ? */
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MCFG_CPU_PROGRAM_MAP(main_map)
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MCFG_CPU_IO_MAP(port_map)
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MCFG_CPU_VBLANK_INT_DRIVER("screen", xyonix_state, nmi_line_pulse)
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MCFG_CPU_PERIODIC_INT_DRIVER(xyonix_state, irq0_line_assert, 4*60) /* ?? controls music tempo */
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/* video hardware */
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MCFG_SCREEN_ADD("screen", RASTER)
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MCFG_SCREEN_REFRESH_RATE(60)
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MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
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MCFG_SCREEN_SIZE(80*4, 32*8)
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MCFG_SCREEN_VISIBLE_AREA(0, 80*4-1, 0, 28*8-1)
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MCFG_SCREEN_UPDATE_DRIVER(xyonix_state, screen_update_xyonix)
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MCFG_GFXDECODE(xyonix)
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MCFG_PALETTE_LENGTH(256)
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/* sound hardware */
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MCFG_SPEAKER_STANDARD_MONO("mono")
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MCFG_SOUND_ADD("sn1", SN76496, 16000000/4)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
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MCFG_SOUND_CONFIG(psg_intf)
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MCFG_SOUND_ADD("sn2", SN76496, 16000000/4)
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MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
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MCFG_SOUND_CONFIG(psg_intf)
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MACHINE_CONFIG_END
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/* ROM Loading ***************************************************************/
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ROM_START( xyonix )
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ROM_REGION( 0x10000, "maincpu", 0 )
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ROM_LOAD( "xyonix3.bin", 0x00000, 0x10000, CRC(1960a74e) SHA1(5fd7bc31ca2f5f1e114d3d0ccf6554ebd712cbd3) )
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ROM_REGION( 0x10000, "gfx1", 0 )
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ROM_LOAD( "xyonix1.bin", 0x00000, 0x08000, CRC(3dfa9596) SHA1(52cdbbe18f83cea7248c29588ea3a18c4bb7984f) )
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ROM_LOAD( "xyonix2.bin", 0x08000, 0x08000, CRC(db87343e) SHA1(62bc30cd65b2f8976cd73a0b349a9ccdb3faaad2) )
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ROM_REGION( 0x0100, "proms", 0 )
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ROM_LOAD( "xyonix.pr", 0x0000, 0x0100, CRC(0012cfc9) SHA1(c7454107a1a8083a370b662c617117b769c0dc1c) )
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ROM_END
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/* GAME drivers **************************************************************/
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GAME( 1989, xyonix, 0, xyonix, xyonix, driver_device, 0, ROT0, "Philko", "Xyonix", 0 )
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