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Diffstat (limited to 'src/devices/bus/msx/ctrl/hypershot.cpp')
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diff --git a/src/devices/bus/msx/ctrl/hypershot.cpp b/src/devices/bus/msx/ctrl/hypershot.cpp
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+// license:BSD-3-Clause
+// copyright-holders:Vas Crabb
+/**********************************************************************
+
+ Konami JE 502/JE 503 Hyper Shot emulation
+
+ Very simple controller with two buttons. RUN is connected to
+ both right and down, and JUMP is connected to TL. Symmetrical
+ case allows use with either button to the left. Pin 8 is used
+ as the common pin so it will work with Sega and Atari consoles.
+ It will work with MSX computers provided pin 8 is pulled low.
+
+ Known versions:
+ * JE 502 original Japanese version, metal case
+ * JE 503 cost-reduced Japanese version, plastic case
+ * JE 503-X02 cost-reduced export version, plastic case
+
+**********************************************************************/
+
+#include "emu.h"
+#include "hypershot.h"
+
+
+namespace {
+
+INPUT_PORTS_START(hypershot)
+ PORT_START("BUTTONS")
+ PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_NAME("%p Run")
+ PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("%p Jump")
+INPUT_PORTS_END
+
+
+class hypershot_device : public device_t, public device_msx_general_purpose_port_interface
+{
+public:
+ hypershot_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock);
+
+ virtual u8 read() override;
+ virtual void pin_8_w(int state) override;
+
+protected:
+ virtual void device_start() override ATTR_COLD;
+ virtual ioport_constructor device_input_ports() const override { return INPUT_PORTS_NAME(hypershot); }
+
+private:
+ required_ioport m_buttons;
+
+ u8 m_pin8_in;
+};
+
+hypershot_device::hypershot_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, MSX_HYPERSHOT, tag, owner, clock)
+ , device_msx_general_purpose_port_interface(mconfig, *this)
+ , m_buttons(*this, "BUTTONS")
+ , m_pin8_in(1)
+{
+}
+
+u8 hypershot_device::read()
+{
+ if (m_pin8_in)
+ {
+ return 0xff;
+ }
+ else
+ {
+ u8 const inputs = m_buttons->read();
+ return 0xe5 | (BIT(inputs, 1) << 4) | (BIT(inputs, 0) ? 0x0a : 0x00);
+ }
+}
+
+void hypershot_device::pin_8_w(int state)
+{
+ m_pin8_in = state ? 1 : 0;
+}
+
+void hypershot_device::device_start()
+{
+ save_item(NAME(m_pin8_in));
+}
+
+} // anonymous namespace
+
+
+DEFINE_DEVICE_TYPE_PRIVATE(MSX_HYPERSHOT, device_msx_general_purpose_port_interface, hypershot_device, "msx_hypershot", "Konami Hyper Shot (JE 502/JE 503, MSX)")