blob: f8f7101134796927cb24b4543b8ea52514275f45 (
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:BSD-3-Clause
// copyright-holders:smf
/***************************************************************************
ATMEL AT28C16
16K ( 2K x 8 ) Parallel EEPROM
***************************************************************************/
#pragma once
#ifndef __AT28C16_H__
#define __AT28C16_H__
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_AT28C16_ADD( _tag, _interface ) \
MCFG_DEVICE_ADD( _tag, AT28C16, 0 )
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> at28c16_device
class at28c16_device :
public device_t,
public device_memory_interface,
public device_nvram_interface
{
public:
// construction/destruction
at28c16_device( const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock );
// I/O operations
DECLARE_WRITE8_MEMBER( write );
DECLARE_READ8_MEMBER( read );
DECLARE_WRITE_LINE_MEMBER( set_a9_12v );
DECLARE_WRITE_LINE_MEMBER( set_oe_12v );
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_validity_check(validity_checker &valid) const;
virtual void device_start();
virtual void device_reset();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
// device_memory_interface overrides
virtual const address_space_config *memory_space_config( address_spacenum spacenum = AS_0 ) const;
// device_nvram_interface overrides
virtual void nvram_default();
virtual void nvram_read( emu_file &file );
virtual void nvram_write( emu_file &file );
// internal state
address_space_config m_space_config;
emu_timer *m_write_timer;
int m_a9_12v;
int m_oe_12v;
int m_last_write;
};
// device type definition
extern const device_type AT28C16;
#endif
|