// license:MAME // copyright-holders:Angelo Salese /*************************************************************************** NEC PC-9801-26 sound card Legacy sound card for PC-98xx family, composed by a single YM2203 TODO: - joystick code should be shared between -26, -86 and -118 ***************************************************************************/ #include "emu.h" #include "machine/pc9801_26.h" #include "machine/pic8259.h" #include "sound/2203intf.h" #define MAIN_CLOCK_X1 XTAL_1_9968MHz //************************************************************************** // GLOBAL VARIABLES //************************************************************************** // device type definition const device_type PC9801_26 = &device_creator; READ8_MEMBER(pc9801_26_device::opn_porta_r) { if(m_joy_sel & 0x80) return ioport(m_joy_sel & 0x40 ? "OPN_PA2" : "OPN_PA1")->read(); return 0xff; } WRITE8_MEMBER(pc9801_26_device::opn_portb_w){ m_joy_sel = data; } WRITE_LINE_MEMBER(pc9801_26_device::pc9801_sound_irq) { /* TODO: seems to die very often */ machine().device(":pic8259_slave")->ir4_w(state); } static const ay8910_interface ay8910_config = { AY8910_LEGACY_OUTPUT, AY8910_DEFAULT_LOADS, DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, pc9801_26_device,opn_porta_r), DEVCB_NULL,//(pc9801_state,opn_portb_r), DEVCB_NULL,//(pc9801_state,opn_porta_w), DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, pc9801_26_device,opn_portb_w), }; static MACHINE_CONFIG_FRAGMENT( pc9801_26_config ) MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("opn", YM2203, MAIN_CLOCK_X1*2) // unknown clock / divider MCFG_YM2203_IRQ_HANDLER(WRITELINE(pc9801_26_device, pc9801_sound_irq)) MCFG_YM2203_AY8910_INTF(&ay8910_config) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) MACHINE_CONFIG_END //------------------------------------------------- // machine_config_additions - device-specific // machine configurations //------------------------------------------------- machine_config_constructor pc9801_26_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( pc9801_26_config ); } //------------------------------------------------- // input_ports - device-specific input ports //------------------------------------------------- static INPUT_PORTS_START( pc9801_26 ) PORT_START("OPN_PA1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1) PORT_NAME("P1 Joystick Up") PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1) PORT_NAME("P1 Joystick Down") PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1) PORT_NAME("P1 Joystick Left") PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1) PORT_NAME("P1 Joystick Right") PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_NAME("P1 Joystick Button 1") PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_NAME("P1 Joystick Button 2") PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("OPN_PA2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2) PORT_NAME("P2 Joystick Up") PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2) PORT_NAME("P2 Joystick Down") PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2) PORT_NAME("P2 Joystick Left") PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2) PORT_NAME("P2 Joystick Right") PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_NAME("P2 Joystick Button 1") PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_NAME("P2 Joystick Button 2") PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("OPN_DSW") PORT_CONFNAME( 0x01, 0x01, "PC-9801-26: Port Base" ) PORT_CONFSETTING( 0x00, "0x088" ) PORT_CONFSETTING( 0x01, "0x188" ) INPUT_PORTS_END ioport_constructor pc9801_26_device::device_input_ports() const { return INPUT_PORTS_NAME( pc9801_26 ); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // pc9801_26_device - constructor //------------------------------------------------- pc9801_26_device::pc9801_26_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, PC9801_26, "pc9801_26", tag, owner, clock, "pc9801_26", __FILE__), // m_maincpu(*owner, "maincpu"), m_opn(*this, "opn") { } //------------------------------------------------- // device_validity_check - perform validity checks // on this device //------------------------------------------------- void pc9801_26_device::device_validity_check(validity_checker &valid) const { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void pc9801_26_device::install_device(offs_t start, offs_t end, offs_t mask, offs_t mirror, read8_delegate rhandler, write8_delegate whandler) { int buswidth = machine().firstcpu->space_config(AS_IO)->m_databus_width; switch(buswidth) { case 8: machine().firstcpu->space(AS_IO).install_readwrite_handler(start, end, mask, mirror, rhandler, whandler, 0); break; case 16: machine().firstcpu->space(AS_IO).install_readwrite_handler(start, end, mask, mirror, rhandler, whandler, 0xffff); break; case 32: machine().firstcpu->space(AS_IO).install_readwrite_handler(start, end, mask, mirror, rhandler, whandler, 0xffffffff); break; default: fatalerror("PC-9801-26: Bus width %d not supported\n", buswidth); break; } } void pc9801_26_device::device_start() { } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void pc9801_26_device::device_reset() { UINT16 port_base = (ioport("OPN_DSW")->read() & 1) << 8; install_device(port_base + 0x0088, port_base + 0x008b, 0, 0, read8_delegate(FUNC(pc9801_26_device::pc9801_26_r), this), write8_delegate(FUNC(pc9801_26_device::pc9801_26_w), this) ); } //************************************************************************** // READ/WRITE HANDLERS //************************************************************************** READ8_MEMBER(pc9801_26_device::pc9801_26_r) { if((offset & 1) == 0) { return offset & 4 ? 0xff : m_opn->read(space, offset >> 1); } else // odd { printf("Read to undefined port [%02x]\n",offset+0x188); return 0xff; } } WRITE8_MEMBER(pc9801_26_device::pc9801_26_w) { if((offset & 5) == 0) m_opn->write(space, offset >> 1, data); else // odd printf("PC9801-26: Write to undefined port [%02x] %02x\n",offset+0x188,data); }