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// license:BSD-3-Clause
// copyright-holders:smf
/***************************************************************************
NEC uPD4701
Incremental Encoder Control
***************************************************************************/
#ifndef __UPD4701_H__
#define __UPD4701_H__
/***************************************************************************
MACROS / CONSTANTS
***************************************************************************/
class upd4701_device : public device_t
{
public:
upd4701_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void x_add( int16_t data );
void y_add( int16_t data );
void switches_set( uint8_t data );
DECLARE_WRITE_LINE_MEMBER( cs_w );
DECLARE_WRITE_LINE_MEMBER( xy_w );
DECLARE_WRITE_LINE_MEMBER( ul_w );
DECLARE_WRITE_LINE_MEMBER( resetx_w );
DECLARE_WRITE_LINE_MEMBER( resety_w );
DECLARE_READ16_MEMBER( d_r );
DECLARE_READ_LINE_MEMBER( cf_r );
DECLARE_READ_LINE_MEMBER( sf_r );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
// internal state
int m_cs;
int m_xy;
int m_ul;
int m_resetx;
int m_resety;
int m_latchx;
int m_latchy;
int m_startx;
int m_starty;
int m_x;
int m_y;
int m_switches;
int m_latchswitches;
int m_cf;
};
extern const device_type UPD4701;
#define MCFG_UPD4701_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, UPD4701, 0)
#endif /* __UPD4701_H__ */
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