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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
// license:BSD-3-Clause
// copyright-holders:Angelo Salese
/***************************************************************************
Flower custom sound chip
***************************************************************************/
#ifndef MAME_AUDIO_FLOWER_H
#define MAME_AUDIO_FLOWER_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> flower_sound_device
class flower_sound_device : public device_t,
public device_sound_interface,
public device_memory_interface
{
public:
// construction/destruction
flower_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
// I/O operations
void lower_write(offs_t offset, u8 data);
void upper_write(offs_t offset, u8 data);
// virtual void lower_map(address_map &map);
// virtual void upper_map(address_map &map);
void regs_map(address_map &map);
protected:
// device-level overrides
//virtual void device_validity_check(validity_checker &valid) const override;
//virtual void device_add_mconfig(machine_config &config) override;
virtual void device_start() override;
virtual void device_reset() override;
virtual space_config_vector memory_space_config() const override;
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
address_space *m_iospace;
private:
const address_space_config m_io_space_config;
sound_stream *m_stream;
static constexpr unsigned MAX_VOICES = 8;
static constexpr int defgain = 48;
u8 m_io_regs[0x80] = {0}; // for debug purpose
std::vector<s16> m_mixer_table;
s16 *m_mixer_lookup;
std::vector<short> m_mixer_buffer;
struct fl_sound_channel
{
u8 start_nibbles[6] = {0};
u8 raw_frequency[4] = {0};
u32 start_address = 0;
u32 position = 0;
u16 frequency = 0;
u8 volume = 0;
u8 volume_bank = 0;
//u8 effect = 0;
bool enable = false;
bool repeat = false;
};
/* data about the sound system */
fl_sound_channel m_channel_list[MAX_VOICES];
void make_mixer_table(int voices, int gain);
required_region_ptr<u8> m_sample_rom;
required_region_ptr<u8> m_volume_rom;
void frequency_w(offs_t offset, u8 data);
void repeat_w(offs_t offset, u8 data);
void unk_w(offs_t offset, u8 data);
void volume_w(offs_t offset, u8 data);
void start_address_w(offs_t offset, u8 data);
void sample_trigger_w(offs_t offset, u8 data);
};
// device type definition
DECLARE_DEVICE_TYPE(FLOWER_CUSTOM, flower_sound_device)
#endif // MAME_AUDIO_FLOWER_H
|