summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/msx/ctrl/joystick.cpp
blob: e5d792c8590c049a0ba759e7fab47a3839a19374 (plain) (blame)
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
// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
/**********************************************************************

    MSX Digital Joystick emulation

**********************************************************************/

#include "emu.h"
#include "joystick.h"


namespace {

INPUT_PORTS_START(msx_joystick)
	PORT_START("JOY")
	PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_8WAY
	PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_8WAY
	PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_8WAY
	PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_8WAY
	PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1)
	PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_BUTTON2)
	PORT_BIT(0xc0, IP_ACTIVE_LOW, IPT_UNUSED)
INPUT_PORTS_END


class msx_joystick_device : public device_t, public device_msx_general_purpose_port_interface
{
public:
	msx_joystick_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);

	virtual u8 read() override { return m_joy->read(); }

protected:
	virtual void device_start() override { }
	virtual ioport_constructor device_input_ports() const override { return INPUT_PORTS_NAME(msx_joystick); }

private:
	required_ioport m_joy;
};


msx_joystick_device::msx_joystick_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
	: device_t(mconfig, MSX_JOYSTICK, tag, owner, clock)
	, device_msx_general_purpose_port_interface(mconfig, *this)
	, m_joy(*this, "JOY")
{
}

} // anonymous namespace


DEFINE_DEVICE_TYPE_PRIVATE(MSX_JOYSTICK, device_msx_general_purpose_port_interface, msx_joystick_device, "msx_joystick", "MSX Digital Joystick")