1 // license:BSD-3-Clause
2 // copyright-holders:Sandro Ronco
3 /*****************************************************************************
4  *
5  *   includes/tvc.h
6  *
7  ****************************************************************************/
8 
9 #ifndef MAME_AUDIO_TVC_H
10 #define MAME_AUDIO_TVC_H
11 
12 #pragma once
13 
14 
15 //**************************************************************************
16 //  TYPE DEFINITIONS
17 //**************************************************************************
18 
19 // ======================> tvc_sound_device
20 
21 class tvc_sound_device : public device_t, public device_sound_interface
22 {
23 public:
24 	// construction/destruction
25 	tvc_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
26 
sndint_wr_callback()27 	auto sndint_wr_callback() { return m_write_sndint.bind(); }
28 
29 	void write(offs_t offset, uint8_t data);
30 	void reset_divider();
31 
32 protected:
33 	// device-level overrides
34 	virtual void device_start() override;
35 	virtual void device_reset() override;
36 	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
37 	virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
38 
39 private:
40 	static const device_timer_id TIMER_SNDINT = 0;
41 
42 	sound_stream *  m_stream;
43 	int             m_freq;
44 	int             m_enabled;
45 	int             m_volume;
46 	int             m_incr;
47 	int             m_signal;
48 	uint8_t           m_ports[3];
49 	emu_timer *     m_sndint_timer;
50 	devcb_write_line   m_write_sndint;
51 };
52 
53 // device type definition
54 DECLARE_DEVICE_TYPE(TVC_SOUND, tvc_sound_device)
55 
56 #endif // MAME_AUDIO_TVC_H
57