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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************

    RCA CDP1863 CMOS 8-Bit Programmable Frequency Generator emulation

**********************************************************************
                            _____   _____
                _RESET   1 |*    \_/     | 16  Vdd
                 CLK 2   2 |             | 15  OE
                 CLK 1   3 |             | 14  OUT
                   STR   4 |   CDP1863   | 13  DO7
                   DI0   5 |             | 12  DI6
                   DI1   6 |             | 11  DI5
                   DI2   7 |             | 10  DI4
                   Vss   8 |_____________| 9   DI3

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

#ifndef MAME_SOUND_CDP1863_H
#define MAME_SOUND_CDP1863_H

#pragma once




//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

// ======================> cdp1863_device

class cdp1863_device :  public device_t,
						public device_sound_interface
{
public:
	// construction/destruction
	cdp1863_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	// inline configuration helpers
	void set_clock2(int clock2) { m_clock2 = clock2; }
	void set_clock2(const XTAL &xtal) { xtal.validate("selecting cdp1863 clock"); set_clock2(xtal.value()); }

	DECLARE_WRITE8_MEMBER( str_w ) { write_str(data); }
	void write_str(uint8_t data) { m_latch = data; }

	DECLARE_WRITE_LINE_MEMBER( oe_w );

	void set_clk1(int clock);
	void set_clk2(int clock);

protected:
	// device-level overrides
	virtual void device_start() override;

	// internal callbacks
	virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;

private:
	sound_stream *m_stream;

	int m_clock1;                   // clock 1
	int m_clock2;                   // clock 2

	// sound state
	int m_oe;                       // output enable
	int m_latch;                    // sound latch
	int16_t m_signal;                 // current signal
	int m_incr;                     // initial wave state
};


// device type definition
DECLARE_DEVICE_TYPE(CDP1863, cdp1863_device)

#endif // MAME_SOUND_CDP1863_H