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
|
// 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
**********************************************************************/
#pragma once
#ifndef __CDP1863__
#define __CDP1863__
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_CDP1863_ADD(_tag, _clock, _clock2) \
MCFG_DEVICE_ADD(_tag, CDP1863, _clock) \
cdp1863_device::static_set_clock2(*device, _clock2);
//**************************************************************************
// 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 clock);
// inline configuration helpers
static void static_set_clock2(device_t &device, int clock2);
DECLARE_WRITE8_MEMBER( str_w );
void str_w(UINT8 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();
// internal callbacks
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
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 m_signal; // current signal
int m_incr; // initial wave state
};
// device type definition
extern const device_type CDP1863;
#endif
|