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-rw-r--r--src/mame/machine/mulcd.h46
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diff --git a/src/mame/machine/mulcd.h b/src/mame/machine/mulcd.h
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+// license:BSD-3-Clause
+// copyright-holders:R. Belmont, Olivier Galibert
+
+// HD44780/LCD image combo used in the yamaha mu, vl70m, fs1r and
+// probably others
+
+#ifndef MAME_MACHINE_MULCD_H
+#define MAME_MACHINE_MULCD_H
+
+#pragma once
+
+#include "video/hd44780.h"
+#include "screen.h"
+
+class mulcd_device : public device_t
+{
+public:
+ mulcd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
+
+ void set_contrast(float contrast) { m_contrast = contrast; }
+ void set_leds(u8 leds) { m_leds = leds; }
+ u8 data_read() { return m_lcd->data_read(); }
+ u8 control_read() { return m_lcd->control_read(); }
+ void data_write(u8 data) { m_lcd->data_write(data); }
+ void control_write(u8 data) { m_lcd->control_write(data); }
+
+
+protected:
+ virtual void device_start() override;
+ virtual void device_reset() override;
+ virtual const tiny_rom_entry *device_rom_region() const override;
+ virtual void device_add_mconfig(machine_config &config) override;
+
+private:
+ required_device<hd44780_device> m_lcd;
+
+ float m_contrast;
+ u8 m_leds;
+
+ float lightlevel(const u8 *src, const u8 *render);
+ u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
+};
+
+DECLARE_DEVICE_TYPE(MULCD, mulcd_device)
+
+#endif