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/***************************************************************************

    SED1200

    A LCD controller.

    The D/F variants are a packaging difference (QFP80 vs. bare chip).
    The A/B variants are an internal CGROM difference (jis
    vs. european characters)

****************************************************************************

    Copyright Olivier Galibert
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are
    met:

        * Redistributions of source code must retain the above copyright
          notice, this list of conditions and the following disclaimer.
        * Redistributions in binary form must reproduce the above copyright
          notice, this list of conditions and the following disclaimer in
          the documentation and/or other materials provided with the
          distribution.
        * Neither the name 'MAME' nor the names of its contributors may be
          used to endorse or promote products derived from this software
          without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY OLIVIER GALIBERT ''AS IS'' AND ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL OLIVIER GALIBERT BE LIABLE FOR ANY DIRECT,
    INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
    IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

***************************************************************************/

#ifndef __SED1200_H__
#define __SED1200_H__

#define MCFG_SED1200D0A_ADD( _tag ) \
	MCFG_DEVICE_ADD( _tag, SED1200D0A, 0 )

#define MCFG_SED1200F0A_ADD( _tag ) \
	MCFG_DEVICE_ADD( _tag, SED1200F0A, 0 )

#define MCFG_SED1200D0B_ADD( _tag ) \
	MCFG_DEVICE_ADD( _tag, SED1200D0B, 0 )

#define MCFG_SED1200F0B_ADD( _tag ) \
	MCFG_DEVICE_ADD( _tag, SED1200F0B, 0 )

class sed1200_device : public device_t {
public:
	sed1200_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);

	void control_w(UINT8 data);
	UINT8 control_r();
	void data_w(UINT8 data);

	const UINT8 *render();

protected:
	virtual void device_start();

private:
	UINT8 cgram[4*8];
	UINT8 ddram[10*2];
	UINT8 render_buf[20*8];
	bool cursor_direction, cursor_blinking, cursor_full, cursor_on, display_on;
	UINT8 cursor_address, cgram_address;
	const UINT8 *cgrom;

	void soft_reset();
	void cursor_step();
};

class sed1200d0a_device : public sed1200_device {
public:
	sed1200d0a_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

protected:
	virtual const rom_entry *device_rom_region() const;
};

class sed1200f0a_device : public sed1200_device {
public:
	sed1200f0a_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

protected:
	virtual const rom_entry *device_rom_region() const;
};

class sed1200d0b_device : public sed1200_device {
public:
	sed1200d0b_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

protected:
	virtual const rom_entry *device_rom_region() const;
};

class sed1200f0b_device : public sed1200_device {
public:
	sed1200f0b_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

protected:
	virtual const rom_entry *device_rom_region() const;
};

extern const device_type SED1200D0A;
extern const device_type SED1200F0A;
extern const device_type SED1200D0B;
extern const device_type SED1200F0B;

#endif