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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/***************************************************************************
nvram.h
Generic non-volatile RAM.
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
#pragma once
#ifndef __NVRAM_H__
#define __NVRAM_H__
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_NVRAM_ADD_0FILL(_tag) \
MCFG_DEVICE_ADD(_tag, NVRAM, 0) \
nvram_device::static_set_default_value(*device, nvram_device::DEFAULT_ALL_0);
#define MCFG_NVRAM_ADD_1FILL(_tag) \
MCFG_DEVICE_ADD(_tag, NVRAM, 0) \
nvram_device::static_set_default_value(*device, nvram_device::DEFAULT_ALL_1);
#define MCFG_NVRAM_ADD_RANDOM_FILL(_tag) \
MCFG_DEVICE_ADD(_tag, NVRAM, 0) \
nvram_device::static_set_default_value(*device, nvram_device::DEFAULT_RANDOM);
#define MCFG_NVRAM_ADD_NO_FILL(_tag) \
MCFG_DEVICE_ADD(_tag, NVRAM, 0) \
nvram_device::static_set_default_value(*device, nvram_device::DEFAULT_NONE);
#define MCFG_NVRAM_ADD_CUSTOM_DRIVER(_tag, _class, _method) \
MCFG_DEVICE_ADD(_tag, NVRAM, 0) \
nvram_device::static_set_custom_handler(*device, nvram_init_delegate(&_class::_method, #_class "::" #_method, NULL, (_class *)0));
#define MCFG_NVRAM_REPLACE_0FILL(_tag) \
MCFG_DEVICE_REPLACE(_tag, NVRAM, 0) \
nvram_device::static_set_default_value(*device, nvram_device::DEFAULT_ALL_0);
#define MCFG_NVRAM_REPLACE_1FILL(_tag) \
MCFG_DEVICE_REPLACE(_tag, NVRAM, 0) \
nvram_device::static_set_default_value(*device, nvram_device::DEFAULT_ALL_1);
#define MCFG_NVRAM_REPLACE_RANDOM_FILL(_tag) \
MCFG_DEVICE_REPLACE(_tag, NVRAM, 0) \
nvram_device::static_set_default_value(*device, nvram_device::DEFAULT_RANDOM);
#define MCFG_NVRAM_REPLACE_CUSTOM_DRIVER(_tag, _class, _method) \
MCFG_DEVICE_REPLACE(_tag, NVRAM, 0) \
nvram_device::static_set_custom_handler(*device, nvram_init_delegate(&_class::_method, #_class "::" #_method, NULL, (_class *)0));
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class nvram_device;
// custom initialization for default state
typedef device_delegate<void (nvram_device &, void *, size_t)> nvram_init_delegate;
// ======================> nvram_device
class nvram_device : public device_t,
public device_nvram_interface
{
public:
// values
enum default_value
{
DEFAULT_ALL_0,
DEFAULT_ALL_1,
DEFAULT_RANDOM,
DEFAULT_CUSTOM,
DEFAULT_NONE
};
// construction/destruction
nvram_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// inline configuration helpers
static void static_set_default_value(device_t &device, default_value value);
static void static_set_custom_handler(device_t &device, nvram_init_delegate callback);
// controls
void set_base(void *base, size_t length) { m_base = base; m_length = length; }
protected:
// device-level overrides
virtual void device_start();
// device_nvram_interface overrides
virtual void nvram_default();
virtual void nvram_read(emu_file &file);
virtual void nvram_write(emu_file &file);
// internal helpers
void determine_final_base();
// configuration state
default_value m_default_value;
nvram_init_delegate m_custom_handler;
// runtime state
void * m_base;
size_t m_length;
};
// device type definition
extern const device_type NVRAM;
#endif
|