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Diffstat (limited to 'src/devices/bus/snes_ctrl/multitap.cpp')
-rw-r--r--src/devices/bus/snes_ctrl/multitap.cpp154
1 files changed, 154 insertions, 0 deletions
diff --git a/src/devices/bus/snes_ctrl/multitap.cpp b/src/devices/bus/snes_ctrl/multitap.cpp
new file mode 100644
index 00000000000..7b5ad87bfbc
--- /dev/null
+++ b/src/devices/bus/snes_ctrl/multitap.cpp
@@ -0,0 +1,154 @@
+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+/**********************************************************************
+
+ Nintendo Super Famicom & SNES Multitap Adapter
+
+**********************************************************************/
+
+#include "multitap.h"
+#include "joypad.h"
+#include "twintap.h"
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type SNES_MULTITAP = &device_creator<snes_multitap_device>;
+
+
+static INPUT_PORTS_START( snes_multitap )
+ PORT_START("CONFIG")
+ PORT_CONFNAME( 0x01, 0x00, "Number of players")
+ PORT_CONFSETTING( 0x00, "3-5P" )
+ PORT_CONFSETTING( 0x01, "2P" )
+INPUT_PORTS_END
+
+
+//-------------------------------------------------
+// input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor snes_multitap_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( snes_multitap );
+}
+
+
+static SLOT_INTERFACE_START( snes_multitap )
+ SLOT_INTERFACE("joypad", SNES_JOYPAD)
+ SLOT_INTERFACE("twintap", SNES_TWINTAP)
+SLOT_INTERFACE_END
+
+static MACHINE_CONFIG_FRAGMENT( multi5p )
+ MCFG_SNES_CONTROL_PORT_ADD("port1", snes_multitap, "joypad")
+ MCFG_SNES_CONTROL_PORT_ADD("port2", snes_multitap, "joypad")
+ MCFG_SNES_CONTROL_PORT_ADD("port3", snes_multitap, "joypad")
+ MCFG_SNES_CONTROL_PORT_ADD("port4", snes_multitap, "joypad")
+MACHINE_CONFIG_END
+
+
+//-------------------------------------------------
+// machine_config_additions - device-specific
+// machine configurations
+//-------------------------------------------------
+
+machine_config_constructor snes_multitap_device::device_mconfig_additions() const
+{
+ return MACHINE_CONFIG_NAME( multi5p );
+}
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// snes_multitap_device - constructor
+//-------------------------------------------------
+
+snes_multitap_device::snes_multitap_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, SNES_MULTITAP, "Nintendo SNES / SFC Multitap Adapter", tag, owner, clock, "snes_multitap", __FILE__),
+ device_snes_control_port_interface(mconfig, *this),
+ m_port1(*this, "port1"),
+ m_port2(*this, "port2"),
+ m_port3(*this, "port3"),
+ m_port4(*this, "port4"),
+ m_cfg(*this, "CONFIG")
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void snes_multitap_device::device_start()
+{
+ save_item(NAME(m_select));
+}
+
+void snes_multitap_device::device_reset()
+{
+ m_select = 1;
+}
+
+//-------------------------------------------------
+// poll
+//-------------------------------------------------
+
+void snes_multitap_device::port_poll()
+{
+ m_port1->port_poll();
+ if (m_cfg->read() == 0) // 4P
+ {
+ m_port2->port_poll();
+ m_port3->port_poll();
+ m_port4->port_poll();
+ }
+}
+
+//-------------------------------------------------
+// read
+//-------------------------------------------------
+
+UINT8 snes_multitap_device::read_pin4()
+{
+ UINT8 ret = 0;
+
+ if (m_cfg->read() == 0) // 4P
+ ret |= m_select ? m_port1->read_pin4() : m_port3->read_pin4();
+ else // 1P
+ ret |= m_select ? m_port1->read_pin4() : 0;
+
+ return ret;
+}
+
+UINT8 snes_multitap_device::read_pin5()
+{
+ UINT8 ret = 0;
+
+ if (m_cfg->read() == 0) // 4P
+ ret |= m_select ? m_port2->read_pin4() : m_port4->read_pin4();
+ return ret;
+}
+
+//-------------------------------------------------
+// write
+//-------------------------------------------------
+
+void snes_multitap_device::write_strobe(UINT8 data)
+{
+ m_port1->write_strobe(data);
+ if (m_cfg->read() == 0) // 4P
+ {
+ m_port2->write_strobe(data);
+ m_port3->write_strobe(data);
+ m_port4->write_strobe(data);
+ }
+}
+
+void snes_multitap_device::write_pin6(UINT8 data)
+{
+ m_select = data & 1;
+}