diff options
Diffstat (limited to 'src/devices/bus/pce_ctrl/xhe3.cpp')
-rw-r--r-- | src/devices/bus/pce_ctrl/xhe3.cpp | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/devices/bus/pce_ctrl/xhe3.cpp b/src/devices/bus/pce_ctrl/xhe3.cpp new file mode 100644 index 00000000000..2484ffb259f --- /dev/null +++ b/src/devices/bus/pce_ctrl/xhe3.cpp @@ -0,0 +1,92 @@ +// license:BSD-3-Clause +// copyright-holders:Vas Crabb +/*********************************************************************** + + Micom Soft XHE-3 PC Joystick Adapter for PC Engine emuation + +***********************************************************************/ + +#include "emu.h" +#include "xhe3.h" + +#include "bus/msx/ctrl/ctrl.h" + + +namespace { + +INPUT_PORTS_START( pce_xhe3 ) + PORT_START("BUTTONS") // using IPT_START/IPT_SELECT would steal a player index + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Select") + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Run") +INPUT_PORTS_END + + + +class pce_xhe3_device : public device_t, public device_pce_control_port_interface +{ +public: + pce_xhe3_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock); + + virtual u8 peripheral_r() override; + virtual void sel_w(int state) override; + virtual void clr_w(int state) override; + +protected: + virtual void device_add_mconfig(machine_config &config) override ATTR_COLD; + virtual ioport_constructor device_input_ports() const override { return INPUT_PORTS_NAME(pce_xhe3); } + virtual void device_start() override ATTR_COLD; + +private: + required_device<msx_general_purpose_port_device> m_port; + required_ioport m_buttons; + + u8 m_sel_in; +}; + + +pce_xhe3_device::pce_xhe3_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock) : + device_t(mconfig, PCE_XHE3, tag, owner, clock), + device_pce_control_port_interface(mconfig, *this), + m_port(*this, "joy"), + m_buttons(*this, "BUTTONS"), + m_sel_in(1) +{ +} + + +u8 pce_xhe3_device::peripheral_r() +{ + if (m_sel_in) + return bitswap<4>(m_port->read(), 2, 1, 3, 0); + else + return bitswap<2>(m_port->read(), 5, 4) | (m_buttons->read() << 2); +} + + +void pce_xhe3_device::sel_w(int state) +{ + m_sel_in = state ? 1 : 0; +} + + +void pce_xhe3_device::clr_w(int state) +{ + m_port->pin_8_w(state); +} + + +void pce_xhe3_device::device_add_mconfig(machine_config &config) +{ + MSX_GENERAL_PURPOSE_PORT(config, m_port, msx_general_purpose_port_devices, "xe1ap"); +} + + +void pce_xhe3_device::device_start() +{ + save_item(NAME(m_sel_in)); +} + +} // anonymous namespace + + +DEFINE_DEVICE_TYPE_PRIVATE(PCE_XHE3, device_pce_control_port_interface, pce_xhe3_device, "pce_xhe3", "Micom Soft XHE-3 PC Joystick Adapter for PC Engine") |