summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/sound/l7a1045_l6028_dsp_a.h
blob: e8d5fa415e5f63531064989ad319ce0a9e6d1569 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
// license:LGPL-2.1+
// copyright-holders:David Haywood, Angelo Salese, ElSemi
#ifndef MAME_SOUND_L7A1045_L6028_DSP_A_H
#define MAME_SOUND_L7A1045_L6028_DSP_A_H

#pragma once

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

// ======================> l7a1045_sound_device

class l7a1045_sound_device : public device_t,
							public device_sound_interface
{
public:
	l7a1045_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

//  void set_base(int8_t* base) { m_base = base; }

	DECLARE_WRITE16_MEMBER( l7a1045_sound_w );
	DECLARE_READ16_MEMBER( l7a1045_sound_r );

	DECLARE_READ8_MEMBER(dma_r_cb);
	DECLARE_WRITE8_MEMBER(dma_w_cb);
	DECLARE_READ16_MEMBER(dma_r16_cb) { m_voice[0].pos++; return 0; }
	DECLARE_WRITE16_MEMBER(dma_w16_cb) { m_voice[0].pos++; }
	DECLARE_WRITE_LINE_MEMBER(dma_hreq_cb);

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

	// sound stream update overrides
	virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;

private:
	struct l7a1045_voice
	{
		l7a1045_voice() { }

		uint32_t start = 0;
		uint32_t end = 0;
		bool mode = false;
		uint32_t pos = 0;
		uint32_t frac = 0;
		uint16_t l_volume = 0;
		uint16_t r_volume = 0;
	};

	sound_stream *m_stream;
	l7a1045_voice m_voice[32];
	uint32_t    m_key;
	required_region_ptr<uint8_t> m_rom;

	uint8_t m_audiochannel;
	uint8_t m_audioregister;

	struct l7a1045_48bit_data {
		uint16_t dat[3];
	};

	l7a1045_48bit_data m_audiodat[0x10][0x20];

	DECLARE_WRITE16_MEMBER(sound_select_w);
	DECLARE_WRITE16_MEMBER(sound_data_w);
	DECLARE_READ16_MEMBER(sound_data_r);
	DECLARE_WRITE16_MEMBER(sound_status_w);
};

DECLARE_DEVICE_TYPE(L7A1045, l7a1045_sound_device)

#endif // MAME_SOUND_L7A1045_L6028_DSP_A_H