// license:LGPL-2.1+ // copyright-holders:Angelo Salese /*************************************************************************** Mitsubishi M50458 OSD chip ***************************************************************************/ #ifndef MAME_VIDEO_M50458_H #define MAME_VIDEO_M50458_H #pragma once //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> m50458_device class m50458_device : public device_t, public device_memory_interface, public device_video_interface { public: // construction/destruction template m50458_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, T &&screen_tag) : m50458_device(mconfig, tag, owner, clock) { set_screen(std::forward(screen_tag)); } m50458_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // I/O operations DECLARE_WRITE_LINE_MEMBER( write_bit ); DECLARE_WRITE_LINE_MEMBER( set_cs_line ); DECLARE_WRITE_LINE_MEMBER( set_clock_line ); uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); protected: enum m50458_state_t { OSD_SET_ADDRESS = 0, OSD_SET_DATA }; // device-level overrides virtual void device_validity_check(validity_checker &valid) const override; virtual void device_start() override; virtual void device_reset() override; virtual space_config_vector memory_space_config() const override; virtual const tiny_rom_entry *device_rom_region() const override; private: inline uint16_t read_word(offs_t address); inline void write_word(offs_t address, uint16_t data); DECLARE_WRITE16_MEMBER(vreg_120_w); DECLARE_WRITE16_MEMBER(vreg_121_w); DECLARE_WRITE16_MEMBER(vreg_122_w); DECLARE_WRITE16_MEMBER(vreg_123_w); DECLARE_WRITE16_MEMBER(vreg_124_w); DECLARE_WRITE16_MEMBER(vreg_125_w); DECLARE_WRITE16_MEMBER(vreg_126_w); DECLARE_WRITE16_MEMBER(vreg_127_w); void m50458_vram(address_map &map); const address_space_config m_space_config; int m_latch; int m_reset_line; int m_clock_line; uint16_t m_current_cmd; int m_cmd_stream_pos; uint16_t m_osd_addr; std::unique_ptr m_shadow_gfx; uint8_t m_phase; uint8_t m_scrf,m_scrr; uint8_t m_space; uint8_t m_hsz1,m_hsz2,m_hsz3; uint8_t m_vsz1,m_vsz2,m_vsz3; uint8_t m_blink; m50458_state_t m_osd_state; }; // device type definition DECLARE_DEVICE_TYPE(M50458, m50458_device) #endif // MAME_VIDEO_M50458_H