summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/ekara/rom.h
blob: 19dcca1fb36e096eb88a4baf23ca698f4afbf5d1 (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
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
// license:BSD-3-Clause
// copyright-holders:David Haywood
#ifndef MAME_BUS_EKARA_ROM_H
#define MAME_BUS_EKARA_ROM_H

#pragma once

#include "slot.h"
#include "machine/i2cmem.h"

// ======================> ekara_rom_plain_device

class ekara_rom_plain_device : public device_t,
						public device_ekara_cart_interface
{
public:
	// construction/destruction
	ekara_rom_plain_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	// reading and writing
	virtual uint8_t read_cart(offs_t offset) override;
	virtual void write_cart(offs_t offset, uint8_t data) override;

	virtual uint8_t read_extra(offs_t offset) override { return 0xff; }
	virtual void write_extra(offs_t offset, uint8_t data) override { }

	virtual uint8_t read_rom(offs_t offset);
	virtual void write_rom(offs_t offset, uint8_t data);

protected:
	ekara_rom_plain_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);

	// device-level overrides
	virtual void device_start() override { }
	virtual void device_reset() override { }
};

// ======================> ekara_rom_i2c_base_device

class ekara_rom_i2c_base_device : public ekara_rom_plain_device
{
public:
	// construction/destruction
	ekara_rom_i2c_base_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

protected:
	ekara_rom_i2c_base_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);

	// reading and writing
	virtual uint8_t read_rom(offs_t offset) override;
	virtual void write_rom(offs_t offset, uint8_t data) override;

	optional_device<i2cmem_device> m_i2cmem;

	virtual uint8_t read_extra(offs_t offset) override;
	virtual void write_extra(offs_t offset, uint8_t data) override;

	virtual void write_bus_control(offs_t offset, uint8_t data) override;

	virtual bool is_read_access_not_rom(void) override;
	virtual bool is_write_access_not_rom(void) override;

	uint8_t m_buscontrol[3];
};


// ======================> ekara_rom_i2c_24c08_epitch_device

class ekara_rom_i2c_24c08_epitch_device : public ekara_rom_i2c_base_device
{
public:
	// construction/destruction
	ekara_rom_i2c_24c08_epitch_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

protected:
	virtual bool is_read_access_not_rom(void) override;
	virtual bool is_write_access_not_rom(void) override;

	virtual void device_add_mconfig(machine_config &config) override;
};


// ======================> ekara_rom_i2c_24lc04_device

class ekara_rom_i2c_24lc04_device : public ekara_rom_i2c_base_device
{
public:
	// construction/destruction
	ekara_rom_i2c_24lc04_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

protected:
	virtual void device_add_mconfig(machine_config &config) override;
};

// ======================> ekara_rom_i2c_24lc02_device

class ekara_rom_i2c_24lc02_device : public ekara_rom_i2c_base_device
{
public:
	// construction/destruction
	ekara_rom_i2c_24lc02_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

protected:
	virtual void device_add_mconfig(machine_config &config) override;
};


// ======================> ekara_rom_i2c_24lc02_gc0010_device

class ekara_rom_i2c_24lc02_gc0010_device : public ekara_rom_i2c_base_device
{
public:
	// construction/destruction
	ekara_rom_i2c_24lc02_gc0010_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

protected:
	virtual void device_add_mconfig(machine_config &config) override;

	bool is_read_access_not_rom(void) override;
	bool is_write_access_not_rom(void) override;
	uint8_t read_extra(offs_t offset) override;
	void write_extra(offs_t offset, uint8_t data) override;
	DECLARE_WRITE_LINE_MEMBER(write_sda) override;
	DECLARE_WRITE_LINE_MEMBER(write_scl) override;
	DECLARE_READ_LINE_MEMBER(read_sda ) override;
};

// device type definition
DECLARE_DEVICE_TYPE(EKARA_ROM_PLAIN,       ekara_rom_plain_device)
DECLARE_DEVICE_TYPE(EKARA_ROM_I2C_BASE,    ekara_rom_i2c_base_device)
DECLARE_DEVICE_TYPE(EKARA_ROM_I2C_24C08_EPITCH,   ekara_rom_i2c_24c08_epitch_device)
DECLARE_DEVICE_TYPE(EKARA_ROM_I2C_24LC04,  ekara_rom_i2c_24lc04_device)
DECLARE_DEVICE_TYPE(EKARA_ROM_I2C_24LC02,  ekara_rom_i2c_24lc02_device)
DECLARE_DEVICE_TYPE(EKARA_ROM_I2C_24LC02_GC0010,  ekara_rom_i2c_24lc02_gc0010_device)

#endif // MAME_BUS_EKARA_ROM_H