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Diffstat (limited to 'src/devices/bus/msx/ctrl/joystick.cpp')
-rw-r--r--src/devices/bus/msx/ctrl/joystick.cpp53
1 files changed, 53 insertions, 0 deletions
diff --git a/src/devices/bus/msx/ctrl/joystick.cpp b/src/devices/bus/msx/ctrl/joystick.cpp
new file mode 100644
index 00000000000..e5d792c8590
--- /dev/null
+++ b/src/devices/bus/msx/ctrl/joystick.cpp
@@ -0,0 +1,53 @@
+// 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")