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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()); }
void str_w(uint8_t data) { m_latch = data; }
void oe_w(int state);
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, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) 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
stream_buffer::sample_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
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