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