summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/nes_ctrl/mjpanel.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/nes_ctrl/mjpanel.cpp')
-rw-r--r--src/devices/bus/nes_ctrl/mjpanel.cpp131
1 files changed, 131 insertions, 0 deletions
diff --git a/src/devices/bus/nes_ctrl/mjpanel.cpp b/src/devices/bus/nes_ctrl/mjpanel.cpp
new file mode 100644
index 00000000000..cb37aeb1c2a
--- /dev/null
+++ b/src/devices/bus/nes_ctrl/mjpanel.cpp
@@ -0,0 +1,131 @@
+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+/**********************************************************************
+
+ Nintendo Family Computer Mahjong Panel
+
+**********************************************************************/
+
+#include "mjpanel.h"
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type NES_MJPANEL = &device_creator<nes_mjpanel_device>;
+
+
+static INPUT_PORTS_START( nes_mjpanel )
+ PORT_START("MJPANEL.0")
+ PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START("MJPANEL.1")
+ PORT_BIT( 0x03, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_MAHJONG_N )
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_MAHJONG_M )
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_MAHJONG_L )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_MAHJONG_K )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_MAHJONG_J )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_MAHJONG_I )
+
+ PORT_START("MJPANEL.2")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_MAHJONG_H )
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_MAHJONG_G )
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_MAHJONG_F )
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_MAHJONG_E )
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_MAHJONG_D )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_MAHJONG_C )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_MAHJONG_B )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_MAHJONG_A )
+
+ PORT_START("MJPANEL.3")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_MAHJONG_RON )
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_MAHJONG_REACH )
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_MAHJONG_CHI )
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_MAHJONG_PON )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_MAHJONG_KAN )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_SELECT ) PORT_NAME("Mahjong Select")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_START ) PORT_NAME("Mahjong Start")
+INPUT_PORTS_END
+
+
+//-------------------------------------------------
+// input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor nes_mjpanel_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( nes_mjpanel );
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// nes_mjpanel_device - constructor
+//-------------------------------------------------
+
+nes_mjpanel_device::nes_mjpanel_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, NES_MJPANEL, "Famicom Mahjong Panel", tag, owner, clock, "nes_mjpanel", __FILE__),
+ device_nes_control_port_interface(mconfig, *this),
+ m_panel(*this, "MJPANEL")
+{
+}
+
+
+//-------------------------------------------------
+// device_start
+//-------------------------------------------------
+
+void nes_mjpanel_device::device_start()
+{
+ save_item(NAME(m_latch));
+}
+
+
+//-------------------------------------------------
+// device_reset
+//-------------------------------------------------
+
+void nes_mjpanel_device::device_reset()
+{
+ m_latch = 0;
+}
+
+
+//-------------------------------------------------
+// read
+//-------------------------------------------------
+
+UINT8 nes_mjpanel_device::read_exp(offs_t offset)
+{
+ UINT8 ret = 0;
+ if (offset)
+ {
+ ret = (m_latch & 1) << 1;
+ m_latch >>= 1;
+ }
+ else
+ logerror("Error: Mahjong panel read from $4016\n");
+
+ return ret;
+}
+
+//-------------------------------------------------
+// write
+//-------------------------------------------------
+
+void nes_mjpanel_device::write(UINT8 data)
+{
+ if (data & 0x01)
+ return;
+
+ if (data & 0xf8)
+ logerror("Error: Mahjong panel read with mux data %02x\n", (data & 0xfe));
+ else
+ m_latch = m_panel[(data & 0xfe) >> 1]->read();
+}