/* 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"
static WRITE8_HANDLER( xyonix_irqack_w )
{
cputag_set_input_line(space->machine(), "maincpu", 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<xyonix_state>();
int tmp = 0;
//popmessage("Coin %d", state->m_coin);
if (coin & 1) // Coin 2 !
{
tmp = (input_port_read(machine, "DSW") & 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 = (input_port_read(machine, "DSW") & 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;
}
static READ8_HANDLER ( xyonix_io_r )
{
xyonix_state *state = space->machine().driver_data<xyonix_state>();
int regPC = cpu_get_pc(&space->device());
if (regPC == 0x27ba)
return 0x88;
if (regPC == 0x27c2)
return state->m_e0_data;
if (regPC == 0x27c7)
{
int coin;
switch (state->m_e0_data)
{
case 0x81 :
return input_port_read(space->machine(), "P1") & 0x7f;
case 0x82 :
return input_port_read(space->machine(), "P2") & 0x7f;
case 0x91:
/* check coin inputs */
coin = ((input_port_read(space->machine(), "P1") & 0x80) >> 7) | ((input_port_read(space->machine(), "P2") & 0x80) >> 6);
if (coin ^ state->m_prev_coin && coin != 3)
{
if (state->m_credits < 9) handle_coins(space->machine(), coin);
}
state->m_prev_coin = coin;
return state->m_credits;
case 0x92:
return ((input_port_read(space->machine(), "P1") & 0x80) >> 7) | ((input_port_read(space->machine(), "P2") & 0x80) >> 6);
case 0xe0: /* reset? */
state->m_coins = 0;
state->m_credits = 0;
return 0xff;
case 0xe1:
state->m_credits--;
return 0xff;
case 0xfe: /* Dip Switches 1 to 4 */
return input_port_read(space->machine(), "DSW") & 0x0f;
case 0xff: /* Dip Switches 5 to 8 */
return input_port_read(space->machine(), "DSW") >> 4;
}
}
//logerror ("xyonix_port_e0_r - PC = %04x - port = %02x\n", regPC, state->m_e0_data);
//popmessage("%02x",state->m_e0_data);
return 0xff;
}
static WRITE8_HANDLER ( xyonix_io_w )
{
xyonix_state *state = space->machine().driver_data<xyonix_state>();
//logerror ("xyonix_port_e0_w %02x - PC = %04x\n", data, cpu_get_pc(&space->device()));
state->m_e0_data = data;
}
/* Mem / Port Maps ***********************************************************/
static ADDRESS_MAP_START( main_map, AS_PROGRAM, 8 )
AM_RANGE(0x0000, 0xbfff) AM_ROM
AM_RANGE(0xc000, 0xdfff) AM_RAM
AM_RANGE(0xe000, 0xffff) AM_RAM_WRITE(xyonix_vidram_w) AM_BASE_MEMBER(xyonix_state,m_vidram)
ADDRESS_MAP_END
static ADDRESS_MAP_START( port_map, AS_IO, 8 )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x20, 0x20) AM_READNOP AM_DEVWRITE("sn1", sn76496_w) /* SN76496 ready signal */
AM_RANGE(0x21, 0x21) AM_READNOP AM_DEVWRITE("sn2", sn76496_w)
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
/* 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("screen", nmi_line_pulse)
MCFG_CPU_PERIODIC_INT(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_FORMAT(BITMAP_FORMAT_INDEXED16)
MCFG_SCREEN_SIZE(80*4, 32*8)
MCFG_SCREEN_VISIBLE_AREA(0, 80*4-1, 0, 28*8-1)
MCFG_SCREEN_UPDATE(xyonix)
MCFG_GFXDECODE(xyonix)
MCFG_PALETTE_LENGTH(256)
MCFG_PALETTE_INIT(xyonix)
MCFG_VIDEO_START(xyonix)
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("sn1", SN76496, 16000000/4)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MCFG_SOUND_ADD("sn2", SN76496, 16000000/4)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
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, 0, ROT0, "Philko", "Xyonix", 0 )