// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** ColecoVision controller port emulation ********************************************************************** **********************************************************************/ #ifndef MAME_BUS_COLECO_CTRL_H #define MAME_BUS_COLECO_CTRL_H #pragma once //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class colecovision_control_port_device; // ======================> device_colecovision_control_port_interface class device_colecovision_control_port_interface : public device_interface { public: virtual uint8_t joy_r() { return 0xff; } virtual void common0_w(int state) { m_common0 = state; } virtual void common1_w(int state) { m_common1 = state; } protected: // construction/destruction device_colecovision_control_port_interface(const machine_config &mconfig, device_t &device); colecovision_control_port_device *m_port; int m_common0; int m_common1; }; // ======================> colecovision_control_port_device class colecovision_control_port_device : public device_t, public device_single_card_slot_interface { public: // construction/destruction template colecovision_control_port_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&opts, char const *dflt) : colecovision_control_port_device(mconfig, tag, owner) { option_reset(); opts(*this); set_default_option(dflt); set_fixed(false); } colecovision_control_port_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock = XTAL()); // static configuration helpers auto irq() { return m_write_irq.bind(); } // computer interface uint8_t read() { uint8_t data = 0xff; if (exists()) data = m_device->joy_r(); return data; } DECLARE_WRITE_LINE_MEMBER( common0_w ) { if (exists()) m_device->common0_w(state); } DECLARE_WRITE_LINE_MEMBER( common1_w ) { if (exists()) m_device->common1_w(state); } bool exists() { return m_device != nullptr; } void irq_w(int state) { m_write_irq(state); } protected: // device-level overrides virtual void device_start() override; device_colecovision_control_port_interface *m_device; private: devcb_write_line m_write_irq; }; // device type definition DECLARE_DEVICE_TYPE(COLECOVISION_CONTROL_PORT, colecovision_control_port_device) void colecovision_control_port_devices(device_slot_interface &device); #endif // MAME_BUS_COLECO_CTRL_H