1 // license:BSD-3-Clause 2 // copyright-holders:Nigel Barnes 3 /********************************************************************** 4 5 Hybrid Music 4000 Keyboard 6 7 https://www.retro-kit.co.uk/page.cfm/content/Hybrid-Music-4000-Keyboard/ 8 http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Hybrid_Music4000.html 9 10 **********************************************************************/ 11 12 13 #ifndef MAME_BUS_BBC_USERPORT_M4000_H 14 #define MAME_BUS_BBC_USERPORT_M4000_H 15 16 #pragma once 17 18 #include "userport.h" 19 20 //************************************************************************** 21 // TYPE DEFINITIONS 22 //************************************************************************** 23 24 // ======================> bbc_m4000_device 25 26 class bbc_m4000_device : 27 public device_t, 28 public device_bbc_userport_interface 29 { 30 public: 31 // construction/destruction 32 bbc_m4000_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); 33 34 protected: 35 // device-level overrides 36 virtual void device_start() override; 37 38 // optional information overrides 39 virtual ioport_constructor device_input_ports() const override; 40 41 virtual uint8_t pb_r() override; 42 virtual void write_cb1(int state) override; 43 virtual void write_cb2(int state) override; 44 45 private: 46 required_ioport_array<8> m_kbd; 47 48 int m_clk; 49 int m_dsb; 50 uint8_t m_out; 51 }; 52 53 54 // device type definition 55 DECLARE_DEVICE_TYPE(BBC_M4000, bbc_m4000_device) 56 57 58 #endif // MAME_BUS_BBC_USERPORT_M4000_H 59