summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/machine/pc9801_86.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mame/machine/pc9801_86.c')
-rw-r--r--src/mame/machine/pc9801_86.c227
1 files changed, 227 insertions, 0 deletions
diff --git a/src/mame/machine/pc9801_86.c b/src/mame/machine/pc9801_86.c
new file mode 100644
index 00000000000..1416e01fd4b
--- /dev/null
+++ b/src/mame/machine/pc9801_86.c
@@ -0,0 +1,227 @@
+// license:BSD-3-Clause
+// copyright-holders:Angelo Salese
+/***************************************************************************
+
+ NEC PC-9801-86 sound card
+
+ Almost the same thing as PC-9801-86, but this one has YM2608 instead of
+ YM2203
+
+ TODO:
+ - joystick code should be shared between -26, -86 and -118
+
+***************************************************************************/
+
+#include "emu.h"
+#include "machine/pc9801_86.h"
+#include "machine/pic8259.h"
+#include "sound/2608intf.h"
+
+#define MAIN_CLOCK_X1 XTAL_1_9968MHz
+
+//**************************************************************************
+// GLOBAL VARIABLES
+//**************************************************************************
+
+// device type definition
+const device_type PC9801_86 = &device_creator<pc9801_86_device>;
+
+
+READ8_MEMBER(pc9801_86_device::opn_porta_r)
+{
+ if(m_joy_sel & 0x80)
+ return ioport(m_joy_sel & 0x40 ? "OPNA_PA2" : "OPNA_PA1")->read();
+
+ return 0xff;
+}
+
+WRITE8_MEMBER(pc9801_86_device::opn_portb_w){ m_joy_sel = data; }
+
+WRITE_LINE_MEMBER(pc9801_86_device::pc9801_sound_irq)
+{
+ /* TODO: seems to die very often */
+ machine().device<pic8259_device>(":pic8259_slave")->ir4_w(state);
+}
+
+static MACHINE_CONFIG_FRAGMENT( pc9801_86_config )
+ MCFG_SPEAKER_STANDARD_MONO("mono")
+ MCFG_SOUND_ADD("opna", YM2608, MAIN_CLOCK_X1*4) // unknown clock / divider
+ MCFG_YM2608_IRQ_HANDLER(WRITELINE(pc9801_86_device, pc9801_sound_irq))
+ MCFG_AY8910_PORT_A_READ_CB(READ8(pc9801_86_device, opn_porta_r))
+ //MCFG_AY8910_PORT_B_READ_CB(READ8(pc9801_state, opn_portb_r))
+ //MCFG_AY8910_PORT_A_WRITE_CB(WRITE8(pc9801_state, opn_porta_w))
+ MCFG_AY8910_PORT_B_WRITE_CB(WRITE8(pc9801_86_device, opn_portb_w))
+ MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
+MACHINE_CONFIG_END
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor pc9801_86_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( pc9801_86_config );
+}
+
+// RAM
+ROM_START( pc9801_86 )
+ ROM_REGION( 0x100000, "opna", ROMREGION_ERASE00 )
+ROM_END
+
+const rom_entry *pc9801_86_device::device_rom_region() const
+{
+ return ROM_NAME( pc9801_86 );
+}
+
+
+//-------------------------------------------------
+// input_ports - device-specific input ports
+//-------------------------------------------------
+
+static INPUT_PORTS_START( pc9801_86 )
+ PORT_START("OPNA_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( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("OPNA_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( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("OPNA_DSW")
+ PORT_CONFNAME( 0x01, 0x01, "PC-9801-86: Port Base" )
+ PORT_CONFSETTING( 0x00, "0x088" )
+ PORT_CONFSETTING( 0x01, "0x188" )
+INPUT_PORTS_END
+
+ioport_constructor pc9801_86_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( pc9801_86 );
+}
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// pc9801_86_device - constructor
+//-------------------------------------------------
+
+pc9801_86_device::pc9801_86_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, PC9801_86, "pc9801_86", tag, owner, clock, "pc9801_86", __FILE__),
+// m_maincpu(*owner, "maincpu"),
+ m_opna(*this, "opna")
+{
+}
+
+
+//-------------------------------------------------
+// device_validity_check - perform validity checks
+// on this device
+//-------------------------------------------------
+
+void pc9801_86_device::device_validity_check(validity_checker &valid) const
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void pc9801_86_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-9801-86: Bus width %d not supported\n", buswidth);
+ }
+}
+
+
+void pc9801_86_device::device_start()
+{
+}
+
+
+//-------------------------------------------------
+// device_reset - device-specific reset
+//-------------------------------------------------
+
+void pc9801_86_device::device_reset()
+{
+ UINT16 port_base = (ioport("OPNA_DSW")->read() & 1) << 8;
+ install_device(port_base + 0x0088, port_base + 0x008f, 0, 0, read8_delegate(FUNC(pc9801_86_device::pc9801_86_r), this), write8_delegate(FUNC(pc9801_86_device::pc9801_86_w), this) );
+// install_device(0xa460, 0xa463, 0, 0, read8_delegate(FUNC(pc9801_86_device::pc9801_86_ext_r), this), write8_delegate(FUNC(pc9801_86_device::pc9801_86_ext_w), this) );
+
+}
+
+
+//**************************************************************************
+// READ/WRITE HANDLERS
+//**************************************************************************
+
+
+READ8_MEMBER(pc9801_86_device::pc9801_86_r)
+{
+ if((offset & 1) == 0)
+ return m_opna->read(space, offset >> 1);
+ else // odd
+ {
+ printf("PC9801-86: Read to undefined port [%02x]\n",offset+0x188);
+ return 0xff;
+ }
+}
+
+
+WRITE8_MEMBER(pc9801_86_device::pc9801_86_w)
+{
+ if((offset & 1) == 0)
+ m_opna->write(space, offset >> 1,data);
+ else // odd
+ printf("PC9801-86: Write to undefined port [%02x] %02x\n",offset+0x188,data);
+}
+
+#if 0
+READ8_MEMBER( pc9801_86_device::pc9801_86_ext_r )
+{
+ if(offset == 0)
+ {
+ printf("OPNA EXT read ID [%02x]\n",offset);
+ return 0xff;
+ }
+
+ printf("OPNA EXT read unk [%02x]\n",offset);
+ return 0xff;
+}
+
+WRITE8_MEMBER( pc9801_86_device::pc9801_86_ext_w )
+{
+ if(offset == 0)
+ {
+ printf("OPNA EXT write mask %02x -> [%02x]\n",data,offset);
+ return;
+ }
+
+ printf("OPNA EXT write unk %02x -> [%02x]\n",data,offset);
+}
+#endif