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// license:BSD-3-Clause
// copyright-holders:Sergey Svishchev
/*********************************************************************
agat7video.h
Implementation of Agat-7 onboard video.
*********************************************************************/
#ifndef MAME_VIDEO_AGAT7_H
#define MAME_VIDEO_AGAT7_H
#pragma once
#include "machine/ram.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class agat7video_device : public device_t
{
public:
// construction/destruction
agat7video_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE8_MEMBER(write);
ram_device *m_ram_dev;
uint8_t *m_char_ptr;
int m_char_size;
protected:
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_add_mconfig(machine_config &config) override;
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(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
void graph_update_lores(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
void graph_update_hires(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int beginrow, int endrow);
private:
void do_io(int offset);
uint32_t m_start_address;
enum {
TEXT_LORES = 0,
TEXT_HIRES,
GRAPHICS_LORES,
GRAPHICS_HIRES,
GRAPHICS_MONO
} m_video_mode;
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);
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
DECLARE_PALETTE_INIT(agat7);
required_device<palette_device> m_palette;
};
// device type definition
DECLARE_DEVICE_TYPE(AGAT7VIDEO, agat7video_device)
#endif // MAME_VIDEO_AGAT7_H
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