diff options
Diffstat (limited to 'src/emu/bus/snes_ctrl/pachinko.c')
-rw-r--r-- | src/emu/bus/snes_ctrl/pachinko.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/emu/bus/snes_ctrl/pachinko.c b/src/emu/bus/snes_ctrl/pachinko.c new file mode 100644 index 00000000000..099e4e00f57 --- /dev/null +++ b/src/emu/bus/snes_ctrl/pachinko.c @@ -0,0 +1,111 @@ +/********************************************************************** + + Nintendo Super Famicom - Sunsoft Pachinko Controller + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +**********************************************************************/ + +#include "pachinko.h" + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type SNES_PACHINKO = &device_creator<snes_pachinko_device>; + + +static INPUT_PORTS_START( snes_pachinko ) + PORT_START("DIAL") + PORT_BIT( 0x7f, 0x3f, IPT_PADDLE) PORT_SENSITIVITY(25) PORT_KEYDELTA(25) PORT_CENTERDELTA(0) PORT_MINMAX(0x18,0x7f) + + PORT_START("BUTTON") + PORT_BIT( 0x00ff, IP_ACTIVE_HIGH, IPT_UNUSED) + PORT_BIT( 0x0100, IP_ACTIVE_HIGH, IPT_BUTTON1) PORT_NAME("Button") + PORT_BIT( 0xfe00, IP_ACTIVE_HIGH, IPT_UNUSED) +INPUT_PORTS_END + + +//------------------------------------------------- +// input_ports - device-specific input ports +//------------------------------------------------- + +ioport_constructor snes_pachinko_device::device_input_ports() const +{ + return INPUT_PORTS_NAME( snes_pachinko ); +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// snes_pachinko_device - constructor +//------------------------------------------------- + +snes_pachinko_device::snes_pachinko_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, SNES_PACHINKO, "Sunsoft Pachinko Controller", tag, owner, clock, "snes_pachinko", __FILE__), + device_snes_control_port_interface(mconfig, *this), + m_dial(*this, "DIAL"), + m_button(*this, "BUTTON") +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void snes_pachinko_device::device_start() +{ + save_item(NAME(m_latch)); + save_item(NAME(m_strobe)); +} + + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void snes_pachinko_device::device_reset() +{ + m_latch = 0; + m_strobe = 0; +} + + +//------------------------------------------------- +// poll +//------------------------------------------------- + +void snes_pachinko_device::port_poll() +{ + UINT8 dial = BITSWAP8(m_dial->read() ^ 0xff,7,6,5,4,3,2,1,0); + m_latch = m_button->read() | (dial << 25) | 0xee7000; // add ID +} + +//------------------------------------------------- +// read +//------------------------------------------------- + +UINT8 snes_pachinko_device::read_pin4() +{ + UINT8 ret = m_latch & 1; + m_latch >>= 1; + return ret; +} + +//------------------------------------------------- +// write +//------------------------------------------------- + +void snes_pachinko_device::write_strobe(UINT8 data) +{ + int old = m_strobe; + m_strobe = data & 0x01; + + if (m_strobe < old) // 1 -> 0 transition + port_poll(); +} |