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Diffstat (limited to 'src/devices/bus/msx/ctrl/townspad.cpp')
-rw-r--r--src/devices/bus/msx/ctrl/townspad.cpp96
1 files changed, 96 insertions, 0 deletions
diff --git a/src/devices/bus/msx/ctrl/townspad.cpp b/src/devices/bus/msx/ctrl/townspad.cpp
new file mode 100644
index 00000000000..2a77cf94ed9
--- /dev/null
+++ b/src/devices/bus/msx/ctrl/townspad.cpp
@@ -0,0 +1,96 @@
+// license:BSD-3-Clause
+// copyright-holders:Vas Crabb
+/**********************************************************************
+
+ FM Towns Pad emulation
+
+**********************************************************************/
+
+#include "emu.h"
+#include "townspad.h"
+
+
+namespace {
+
+INPUT_PORTS_START(fm_towns_pad)
+ PORT_START("PAD")
+ PORT_BIT(0x001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_8WAY
+ PORT_BIT(0x002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_8WAY
+ PORT_BIT(0x004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_8WAY
+ PORT_BIT(0x008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_8WAY
+ PORT_BIT(0x010, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("%p A")
+ PORT_BIT(0x020, IP_ACTIVE_LOW, IPT_BUTTON2) PORT_NAME("%p B")
+ PORT_BIT(0x0c0, IP_ACTIVE_LOW, IPT_UNUSED)
+ PORT_BIT(0x100, IP_ACTIVE_LOW, IPT_START) PORT_NAME("%p Run")
+ PORT_BIT(0x200, IP_ACTIVE_LOW, IPT_SELECT)
+INPUT_PORTS_END
+
+INPUT_PORTS_START(marty_pad)
+ PORT_INCLUDE(fm_towns_pad)
+
+ PORT_MODIFY("PAD")
+ PORT_BIT(0x040, IP_ACTIVE_LOW, IPT_BUTTON3) PORT_NAME("%p Zoom") // shoulder button
+INPUT_PORTS_END
+
+
+class fm_towns_pad_device : public device_t, public device_msx_general_purpose_port_interface
+{
+public:
+ fm_towns_pad_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+ virtual u8 read() override;
+
+protected:
+ fm_towns_pad_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock);
+
+ virtual void device_start() override { }
+ virtual ioport_constructor device_input_ports() const override { return INPUT_PORTS_NAME(fm_towns_pad); }
+
+private:
+ required_ioport m_pad;
+};
+
+
+fm_towns_pad_device::fm_towns_pad_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : fm_towns_pad_device(mconfig, MSX_TOWNSPAD, tag, owner, clock)
+{
+}
+
+fm_towns_pad_device::fm_towns_pad_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock)
+ : device_t(mconfig, type, tag, owner, clock)
+ , device_msx_general_purpose_port_interface(mconfig, *this)
+ , m_pad(*this, "PAD")
+{
+}
+
+u8 fm_towns_pad_device::read()
+{
+ auto pad = m_pad->read();
+ if (!BIT(pad, 8)) // RUN activates RIGHT+LEFT
+ pad &= ~0x0c;
+ if (!BIT(pad, 9)) // SELECT activates BACK+FWD
+ pad &= ~0x03;
+ return u8(pad & 0xff);
+}
+
+
+class marty_pad_device : public fm_towns_pad_device
+{
+public:
+ marty_pad_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+protected:
+ virtual ioport_constructor device_input_ports() const override { return INPUT_PORTS_NAME(marty_pad); }
+};
+
+
+marty_pad_device::marty_pad_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
+ : fm_towns_pad_device(mconfig, MSX_MARTYPAD, tag, owner, clock)
+{
+}
+
+} // anonymous namespace
+
+
+DEFINE_DEVICE_TYPE_PRIVATE(MSX_TOWNSPAD, device_msx_general_purpose_port_interface, fm_towns_pad_device, "msx_townspad", "FM Towns 2-button Pad")
+DEFINE_DEVICE_TYPE_PRIVATE(MSX_MARTYPAD, device_msx_general_purpose_port_interface, marty_pad_device, "msx_martypad", "FM Towns Marty Pad")