1 // license:LGPL-2.1+ 2 // copyright-holders:Angelo Salese 3 /*************************************************************************** 4 5 Seibu CRTC device 6 7 ***************************************************************************/ 8 9 #ifndef MAME_VIDEO_SEIBU_CRTC_H 10 #define MAME_VIDEO_SEIBU_CRTC_H 11 12 #pragma once 13 14 15 //************************************************************************** 16 // TYPE DEFINITIONS 17 //************************************************************************** 18 19 // ======================> seibu_crtc_device 20 21 class seibu_crtc_device : public device_t, 22 public device_memory_interface, 23 public device_video_interface 24 { 25 public: 26 // construction/destruction 27 seibu_crtc_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); 28 decrypt_key_callback()29 auto decrypt_key_callback() { return m_decrypt_key_cb.bind(); } layer_en_callback()30 auto layer_en_callback() { return m_layer_en_cb.bind(); } layer_scroll_callback()31 auto layer_scroll_callback() { return m_layer_scroll_cb.bind(); } reg_1a_callback()32 auto reg_1a_callback() { return m_reg_1a_cb.bind(); } layer_scroll_base_callback()33 auto layer_scroll_base_callback() { return m_layer_scroll_base_cb.bind(); } 34 35 // I/O operations 36 void write(offs_t offset, uint16_t data); 37 void write_alt(offs_t offset, uint16_t data); 38 uint16_t read(offs_t offset); 39 uint16_t read_alt(offs_t offset); 40 void decrypt_key_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0); 41 void layer_en_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0); 42 uint16_t reg_1a_r(); 43 void reg_1a_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0); 44 void layer_scroll_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0); 45 void layer_scroll_base_w(offs_t offset, uint16_t data, uint16_t mem_mask = ~0); 46 47 void seibu_crtc_vregs(address_map &map); 48 protected: 49 // device-level overrides 50 virtual void device_validity_check(validity_checker &valid) const override; 51 virtual void device_start() override; 52 virtual void device_reset() override; 53 virtual space_config_vector memory_space_config() const override; 54 55 private: 56 devcb_write16 m_decrypt_key_cb; 57 devcb_write16 m_layer_en_cb; 58 devcb_write16 m_layer_scroll_cb; 59 devcb_write16 m_reg_1a_cb; 60 devcb_write16 m_layer_scroll_base_cb; 61 const address_space_config m_space_config; 62 inline uint16_t read_word(offs_t address); 63 inline void write_word(offs_t address, uint16_t data); 64 65 uint16_t m_reg_1a; 66 }; 67 68 69 // device type definition 70 DECLARE_DEVICE_TYPE(SEIBU_CRTC, seibu_crtc_device) 71 72 #endif // MAME_VIDEO_SEIBU_CRTC_H 73