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diff --git a/src/mame/video/agat9.h b/src/mame/video/agat9.h
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+// license:BSD-3-Clause
+// copyright-holders:Sergey Svishchev
+/*********************************************************************
+
+ agat9video.h
+
+ Implementation of Agat-9 onboard video.
+
+*********************************************************************/
+
+#ifndef MAME_VIDEO_AGAT9_H
+#define MAME_VIDEO_AGAT9_H
+
+#pragma once
+
+#include "machine/ram.h"
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class agat9video_device : public device_t, public device_palette_interface
+{
+public:
+ template <typename T, typename U>
+ agat9video_device(const machine_config &mconfig, const char *tag, device_t *owner, T &&ram_tag, U &&char_tag)
+ : agat9video_device(mconfig, tag, owner, (uint32_t)0)
+ {
+ m_ram_dev.set_tag(std::forward<T>(ram_tag));
+ m_char_region.set_tag(std::forward<U>(char_tag));
+ }
+
+ agat9video_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+ DECLARE_READ8_MEMBER(read);
+ DECLARE_WRITE8_MEMBER(write);
+ DECLARE_READ8_MEMBER(apple_read);
+ DECLARE_WRITE8_MEMBER(apple_write);
+
+ bool m_page2;
+ bool m_flash;
+ bool m_mix;
+ bool m_graphics;
+ std::unique_ptr<uint16_t[]> m_hires_artifact_map;
+
+protected:
+ virtual void device_start() override;
+ virtual void device_reset() override;
+ virtual void device_add_mconfig(machine_config &config) override;
+
+ virtual u32 palette_entries() const override { return 16; }
+
+ void text_update_lores(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
+ void text_update_hires(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
+ void graph_update_mono_lores(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
+ void graph_update_mono_hires(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
+ void graph_update_color_lores(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
+ void graph_update_color_hires(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
+
+ void text_update_apple(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
+ void hgr_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
+
+private:
+ void do_io(int offset);
+ void do_apple_io(int offset);
+
+ void plot_text_character(bitmap_ind16 &bitmap, int xpos, int ypos, int xscale, uint32_t code, const uint8_t *textgfx_data, uint32_t textgfx_datalen, int fg, int bg);
+ void plot_text_character_apple(bitmap_ind16 &bitmap, int xpos, int ypos, int xscale, uint32_t code, const uint8_t *textgfx_data, uint32_t textgfx_datalen, int fg, int bg);
+
+ uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+
+ required_device<screen_device> m_screen;
+ required_device<ram_device> m_ram_dev;
+ required_memory_region m_char_region;
+
+ uint8_t *m_char_ptr;
+ int m_char_size;
+ uint32_t m_start_address;
+ enum {
+ TEXT_LORES = 0,
+ TEXT_HIRES,
+ GRAPHICS_COLOR_LORES,
+ GRAPHICS_COLOR_HIRES,
+ GRAPHICS_MONO_LORES,
+ GRAPHICS_MONO_HIRES,
+ APPLE
+ } m_video_mode;
+ int m_mode;
+ int palette_index;
+};
+
+// device type definition
+DECLARE_DEVICE_TYPE(AGAT9VIDEO, agat9video_device)
+
+#endif // MAME_VIDEO_AGAT9_H