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/***************************************************************************
Hitachi HD44352 LCD controller
***************************************************************************/
#pragma once
#ifndef __hd44352_H__
#define __hd44352_H__
#define MCFG_HD44352_ADD( _tag, _clock, _config) \
MCFG_DEVICE_ADD( _tag, HD44352, _clock ) \
MCFG_DEVICE_CONFIG( _config )
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> hd44352_interface
struct hd44352_interface
{
devcb_write_line m_on_cb; // ON line
};
// ======================> hd44352_device
class hd44352_device :
public device_t,
public hd44352_interface
{
public:
// construction/destruction
hd44352_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// device interface
UINT8 data_read();
void data_write(UINT8 data);
void control_write(UINT8 data);
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
virtual void device_config_complete();
virtual void device_validity_check(validity_checker &valid) const;
private:
UINT8 compute_newval(UINT8 type, UINT8 oldval, UINT8 newval);
UINT8 get_char(UINT16 pos);
static const device_timer_id ON_TIMER = 1;
emu_timer *m_on_timer;
UINT8 m_video_ram[2][0x180];
UINT8 m_control_lines;
UINT8 m_data_bus;
UINT8 m_par[3];
UINT8 m_state;
UINT16 m_bank;
UINT16 m_offset;
UINT8 m_char_width;
UINT8 m_lcd_on;
UINT8 m_scroll;
UINT32 m_contrast;
UINT8 m_custom_char[4][8]; // 4 chars * 8 bytes
UINT8 m_byte_count;
UINT8 m_cursor_status;
UINT8 m_cursor[8];
UINT8 m_cursor_x;
UINT8 m_cursor_y;
UINT8 m_cursor_lcd;
devcb_resolved_write_line m_on; // ON line callback
};
// device type definition
extern const device_type HD44352;
#endif
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