// license:BSD-3-Clause
// copyright-holders:Angelo Salese
/***************************************************************************
Namco 6-speed Gearbox device
Ridge Racer Clutch Pedal assembly part # 88800032,
6 Speed Gear Shift assembly part # 88300672 + 88300683
Used in Ridge Racer 1,2,Rave Racer deluxe cabinet and Driver's Eyes
User side gear scheme:
1 3 5
|-|-|
2 4 6
Being a mechanical part there are currently two methods hooked up,
emulated and natural.
First one just uses whatever is read in the inputs, second one
simulates clutch lock as in a real car.
On the arcade cabinet(goes for Ridge Racer), the clutch isn't mechanically
or electronically connected to the shifter. The clutch pedal simply connects
to a microswitch. The shifter itself is basically a loose 8-way joystick with
a panel on top to restrict movement. There is no software-controlled lock,
maybe magnets.
TODO:
- Better way to lock current gear via MAME's input system; no clutch involved
- gear output for artwork system;
***************************************************************************/
#include "emu.h"
#include "namcoio_gearbox.h"
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
// device type definition
DEFINE_DEVICE_TYPE(NAMCOIO_GEARBOX, namcoio_gearbox_device, "namcoio_gearbox", "Namco I/O Gearbox")
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// namcoio_gearbox_device - constructor
//-------------------------------------------------
namcoio_gearbox_device::namcoio_gearbox_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, NAMCOIO_GEARBOX, tag, owner, clock)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void namcoio_gearbox_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void namcoio_gearbox_device::device_reset()
{
m_gearbox_state = 0xf;
}
static INPUT_PORTS_START( gearbox_inputs )
PORT_START("GEARBOX")
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_NAME("Gearbox Up")
PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_NAME("Gearbox Down")
PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_NAME("Gearbox Left")
PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_NAME("Gearbox Right")
PORT_START("CLUTCH")
PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_NAME("Clutch Pedal")
PORT_START("CONFIG")
PORT_CONFNAME( 0x01, 0x01, "Clutch Mode" )
PORT_CONFSETTING( 0x01, "Emulated" )
PORT_CONFSETTING( 0x00, "Natural" )
PORT_CONFNAME( 0x02, 0x02, "Gearbox Debug")
PORT_CONFSETTING( 0x02, DEF_STR( Yes ) )
PORT_CONFSETTING( 0x00, DEF_STR( No ) )
INPUT_PORTS_END
ioport_constructor namcoio_gearbox_device::device_input_ports() const
{
return INPUT_PORTS_NAME( gearbox_inputs );
}
//**************************************************************************
// READ/WRITE HANDLERS
//**************************************************************************
//static const ioport_value gearbox_table[] = { 0x0f, 0x0a, 0x09, 0x0e, 0x0d, 0x06, 0x05 };
CUSTOM_INPUT_MEMBER( namcoio_gearbox_device::in_r )
{
if(ioport("CONFIG")->read() & 1)
return ioport("GEARBOX")->read() & 0xf;
bool clutch_pressed = (ioport("CLUTCH")->read() & 1) == 0;
const char gearbox_output[16] = { '-', '-', '-', '-',
'-', '6', '5', 'N',
'-', '2', '1', 'N',
'-', '4', '3', 'N' };
if(ioport("CONFIG")->read() & 2)
popmessage("%c %c",gearbox_output[m_gearbox_state],clutch_pressed == true ? '*' : '.');
if(clutch_pressed == false)
return m_gearbox_state;
m_gearbox_state = ioport("GEARBOX")->read() & 0xf;
return 0xf; // return neutral while changing gear
}
READ_LINE_MEMBER( namcoio_gearbox_device::clutch_r )
{
return ioport("CLUTCH")->read() & 1;
}