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// license:BSD-3-Clause
// copyright-holders:hap
/******************************************************************************
*
* Novag chess machines base class
*
******************************************************************************/
#include "sound/beep.h"
#include "video/hd44780.h"
class novagbase_state : public driver_device
{
public:
novagbase_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_beeper(*this, "beeper"),
m_lcd(*this, "hd44780"),
m_inp_matrix(*this, "IN.%u", 0),
m_display_wait(33),
m_display_maxy(1),
m_display_maxx(0)
{ }
// devices/pointers
required_device<cpu_device> m_maincpu;
optional_device<beep_device> m_beeper;
optional_device<hd44780_device> m_lcd;
optional_ioport_array<8> m_inp_matrix; // max 8
// misc common
u16 m_inp_mux; // multiplexed keypad mask
u16 m_led_select;
u16 m_led_data;
u8 m_lcd_control;
u16 read_inputs(int columns);
// display common
int m_display_wait; // led/lamp off-delay in microseconds (default 33ms)
int m_display_maxy; // display matrix number of rows
int m_display_maxx; // display matrix number of columns (max 31 for now)
u32 m_display_state[0x20]; // display matrix rows data (last bit is used for always-on)
u16 m_display_segmask[0x20]; // if not 0, display matrix row is a digit, mask indicates connected segments
u32 m_display_cache[0x20]; // (internal use)
u8 m_display_decay[0x20][0x20]; // (internal use)
TIMER_DEVICE_CALLBACK_MEMBER(display_decay_tick);
void display_update();
void set_display_size(int maxx, int maxy);
void set_display_segmask(u32 digits, u32 mask);
void display_matrix(int maxx, int maxy, u32 setx, u32 sety, bool update = true);
DECLARE_PALETTE_INIT(novag_lcd);
HD44780_PIXEL_UPDATE(novag_lcd_pixel_update);
protected:
virtual void machine_start() override;
virtual void machine_reset() override;
};
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