1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
/**********************************************************************
Sega Saturn Racing Wheel emulation
**********************************************************************/
#include "emu.h"
#include "racing.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
DEFINE_DEVICE_TYPE(SATURN_WHEEL, saturn_wheel_device, "saturn_racing", "Sega Saturn Racing Wheel")
static INPUT_PORTS_START( saturn_racing )
PORT_START("JOY")
PORT_BIT(0x8000, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT)
PORT_BIT(0x4000, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT)
PORT_BIT(0x2000, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN)
PORT_BIT(0x1000, IP_ACTIVE_LOW, IPT_JOYSTICK_UP)
PORT_BIT(0x0800, IP_ACTIVE_LOW, IPT_START)
PORT_BIT(0x0400, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("A")
PORT_BIT(0x0200, IP_ACTIVE_LOW, IPT_BUTTON3) PORT_NAME("C")
PORT_BIT(0x0100, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_NAME("B")
PORT_BIT(0x0080, IP_ACTIVE_LOW, IPT_BUTTON8) PORT_NAME("R")
PORT_BIT(0x0040, IP_ACTIVE_LOW, IPT_BUTTON4) PORT_NAME("X")
PORT_BIT(0x0020, IP_ACTIVE_LOW, IPT_BUTTON5) PORT_NAME("Y")
PORT_BIT(0x0010, IP_ACTIVE_LOW, IPT_BUTTON6) PORT_NAME("Z")
PORT_BIT(0x0008, IP_ACTIVE_LOW, IPT_BUTTON7) PORT_NAME("L")
// Note: unused bits must stay high, Bug 2 relies on this.
PORT_BIT(0x0007, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("ANALOG_X")
PORT_BIT( 0xff, 0x80, IPT_AD_STICK_X ) PORT_MINMAX(0x00, 0xff) PORT_SENSITIVITY(25) PORT_KEYDELTA(200) PORT_NAME("Racing Stick X")
INPUT_PORTS_END
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
ioport_constructor saturn_wheel_device::device_input_ports() const
{
return INPUT_PORTS_NAME( saturn_racing );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// saturn_wheel_device - constructor
//-------------------------------------------------
saturn_wheel_device::saturn_wheel_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) :
device_t(mconfig, SATURN_WHEEL, tag, owner, clock),
device_saturn_control_port_interface(mconfig, *this),
m_joy(*this, "JOY"),
m_anx(*this, "ANALOG_X")
{
m_ctrl_id = 0x13;
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void saturn_wheel_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void saturn_wheel_device::device_reset()
{
}
//-------------------------------------------------
// read_ctrl
//-------------------------------------------------
uint8_t saturn_wheel_device::read_ctrl(uint8_t offset)
{
uint8_t res = 0;
switch (offset)
{
case 0:
default:
res = m_joy->read() >> 8;
break;
case 1:
res = m_joy->read() & 0xff;
break;
case 2:
res = m_anx->read();
break;
}
return res;
}
|