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diff --git a/src/mame/includes/mz80.h b/src/mame/includes/mz80.h
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+// license:BSD-3-Clause
+// copyright-holders:Miodrag Milanovic
+/*****************************************************************************
+ *
+ * includes/mz80.h
+ *
+ ****************************************************************************/
+
+#ifndef MZ80_H_
+#define MZ80_H_
+
+#include "emu.h"
+#include "cpu/z80/z80.h"
+#include "machine/i8255.h"
+#include "machine/pit8253.h"
+#include "imagedev/cassette.h"
+#include "sound/speaker.h"
+#include "sound/wave.h"
+
+class mz80_state : public driver_device
+{
+public:
+ mz80_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_pit(*this, "pit8253"),
+ m_ppi(*this, "ppi8255"),
+ m_cassette(*this, "cassette"),
+ m_speaker(*this, "speaker"),
+ m_p_ram(*this, "p_ram"),
+ m_p_videoram(*this, "p_videoram"){ }
+
+ required_device<cpu_device> m_maincpu;
+ required_device<pit8253_device> m_pit;
+ required_device<i8255_device> m_ppi;
+ required_device<cassette_image_device> m_cassette;
+ required_device<speaker_sound_device> m_speaker;
+ DECLARE_READ8_MEMBER(mz80k_strobe_r);
+ DECLARE_WRITE8_MEMBER(mz80k_strobe_w);
+ DECLARE_READ8_MEMBER(mz80k_8255_portb_r);
+ DECLARE_READ8_MEMBER(mz80k_8255_portc_r);
+ DECLARE_WRITE8_MEMBER(mz80k_8255_porta_w);
+ DECLARE_WRITE8_MEMBER(mz80k_8255_portc_w);
+ DECLARE_WRITE_LINE_MEMBER(pit_out0_changed);
+ DECLARE_WRITE_LINE_MEMBER(pit_out2_changed);
+ bool m_mz80k_vertical;
+ bool m_mz80k_tempo_strobe;
+ UINT8 m_speaker_level;
+ bool m_prev_state;
+ UINT8 m_mz80k_cursor_cnt;
+ UINT8 m_mz80k_keyboard_line;
+ required_shared_ptr<UINT8> m_p_ram;
+ const UINT8 *m_p_chargen;
+ required_shared_ptr<UINT8> m_p_videoram;
+ DECLARE_DRIVER_INIT(mz80k);
+ virtual void machine_reset();
+ virtual void video_start();
+ UINT32 screen_update_mz80k(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ UINT32 screen_update_mz80kj(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ UINT32 screen_update_mz80a(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+ TIMER_DEVICE_CALLBACK_MEMBER(ne555_tempo_callback);
+};
+
+
+/*----------- defined in video/mz80.c -----------*/
+
+extern const gfx_layout mz80k_charlayout;
+extern const gfx_layout mz80kj_charlayout;
+
+#endif /* MZ80_H_ */