// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
HD44102 Dot Matrix Liquid Crystal Graphic Display Column Driver emulation
**********************************************************************/
#ifndef MAME_VIDEO_HD44102_H
#define MAME_VIDEO_HD44102_H
#pragma once
///*************************************************************************
// TYPE DEFINITIONS
///*************************************************************************
// ======================> hd44102_device
class hd44102_device : public device_t,
public device_video_interface
{
public:
// construction/destruction
template <typename T>
hd44102_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, T &&screen_tag, int sx, int sy)
:hd44102_device(mconfig, tag, owner, clock)
{
set_screen(std::forward<T>(screen_tag));
set_offsets(sx, sy);
}
hd44102_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// inline configuration helpers
void set_offsets(int sx, int sy) { m_sx = sx; m_sy = sy; }
DECLARE_READ8_MEMBER( read );
DECLARE_WRITE8_MEMBER( write );
DECLARE_WRITE_LINE_MEMBER( cs2_w );
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
DECLARE_READ8_MEMBER( status_r );
DECLARE_WRITE8_MEMBER( control_w );
DECLARE_READ8_MEMBER( data_r );
DECLARE_WRITE8_MEMBER( data_w );
inline void count_up_or_down();
uint8_t m_ram[4][50]; // display memory
uint8_t m_status; // status register
uint8_t m_output; // output register
int m_cs2; // chip select
int m_page; // display start page
int m_x; // X address
int m_y; // Y address
int m_sx;
int m_sy;
};
// device type definition
DECLARE_DEVICE_TYPE(HD44102, hd44102_device)
#endif // MAME_VIDEO_HD44102_H