summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/a800/a800_slot.h
blob: 0951c4a2c3dc93164e9ad9415c1ef944a761b3dc (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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
#ifndef MAME_BUS_A800_A800_SLOT_H
#define MAME_BUS_A800_A800_SLOT_H

#pragma once

#include "softlist_dev.h"


/***************************************************************************
 TYPE DEFINITIONS
 ***************************************************************************/

#define A800SLOT_ROM_REGION_TAG ":cart:rom"

/* PCB */
enum
{
	A800_8K = 0,
	A800_8K_RIGHT,
	A800_16K,
	A800_OSS034M,
	A800_OSS043M,
	A800_OSSM091,
	A800_OSS8K,
	A800_PHOENIX,
	A800_XEGS,
	A800_BBSB,
	A800_DIAMOND,
	A800_WILLIAMS,
	A800_EXPRESS,
	A800_SPARTADOS,
	A800_BLIZZARD,
	A800_TURBO64,
	A800_TURBO128,
	A800_TELELINK2,
	A800_MICROCALC,
	A800_CORINA,
	A5200_4K,
	A5200_8K,
	A5200_16K,
	A5200_32K,
	A5200_16K_2CHIPS,
	A5200_BBSB
};


// ======================> device_a800_cart_interface

class device_a800_cart_interface : public device_interface
{
public:
	// construction/destruction
	virtual ~device_a800_cart_interface();

	// memory accessor
	virtual uint8_t read_80xx(offs_t offset) { return 0xff; }
	virtual uint8_t read_d5xx(offs_t offset) { return 0xff; }
	virtual void write_80xx(offs_t offset, uint8_t data) {}
	virtual void write_d5xx(offs_t offset, uint8_t data) {}

	void rom_alloc(uint32_t size, const char *tag);
	void ram_alloc(uint32_t size);
	void nvram_alloc(uint32_t size);
	uint8_t* get_rom_base() { return m_rom; }
	uint8_t* get_ram_base() { return &m_ram[0]; }
	uint8_t* get_nvram_base() { return &m_nvram[0]; }
	uint32_t get_rom_size() { return m_rom_size; }
	uint32_t get_ram_size() { return m_ram.size(); }
	uint32_t get_nvram_size() { return m_nvram.size(); }

protected:
	device_a800_cart_interface(const machine_config &mconfig, device_t &device);

	// internal state
	uint8_t *m_rom;
	uint32_t m_rom_size;
	std::vector<uint8_t> m_ram;
	std::vector<uint8_t> m_nvram; // HiScore cart can save scores!
	// helpers
	int m_bank_mask;
};


// ======================> a800_cart_slot_device

class a800_cart_slot_device : public device_t,
								public device_image_interface,
								public device_single_card_slot_interface<device_a800_cart_interface>
{
public:
	// construction/destruction
	template <typename T>
	a800_cart_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&opts, char const *dflt)
		: a800_cart_slot_device(mconfig, tag, owner, (uint32_t)0)
	{
		option_reset();
		opts(*this);
		set_default_option(dflt);
		set_fixed(false);
	}
	a800_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
	virtual ~a800_cart_slot_device();

	// image-level overrides
	virtual image_init_result call_load() override;
	virtual void call_unload() override;

	virtual iodevice_t image_type() const noexcept override { return IO_CARTSLOT; }
	virtual bool is_readable()  const noexcept override { return true; }
	virtual bool is_writeable() const noexcept override { return false; }
	virtual bool is_creatable() const noexcept override { return false; }
	virtual bool must_be_loaded() const noexcept override { return false; }
	virtual bool is_reset_on_load() const noexcept override { return true; }
	virtual const char *image_interface() const noexcept override { return "a8bit_cart"; }
	virtual const char *file_extensions() const noexcept override { return "bin,rom,car"; }

	// slot interface overrides
	virtual std::string get_default_card_software(get_default_card_software_hook &hook) const override;

	int get_cart_type() { return m_type; };
	int identify_cart_type(const uint8_t *header) const;
	bool has_cart() { return m_cart != nullptr; }

	// reading and writing
	uint8_t read_80xx(offs_t offset);
	uint8_t read_d5xx(offs_t offset);
	void write_80xx(offs_t offset, uint8_t data);
	void write_d5xx(offs_t offset, uint8_t data);

protected:
	a800_cart_slot_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;

	// device_image_interface implementation
	virtual const software_list_loader &get_software_list_loader() const override { return rom_software_list_loader::instance(); }

private:
	device_a800_cart_interface*       m_cart;
	int m_type;
};


// The variants below are added to handle the additional formats for a5200, and to give more
// clear error messages if you try to load an A5200 game into an A800 or a XEGS, etc.

// ======================> a5200_cart_slot_device

class a5200_cart_slot_device : public a800_cart_slot_device
{
public:
	// construction/destruction
	template <typename T>
	a5200_cart_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&opts, char const *dflt)
		: a5200_cart_slot_device(mconfig, tag, owner, (uint32_t)0)
	{
		option_reset();
		opts(*this);
		set_default_option(dflt);
		set_fixed(false);
	}
	a5200_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
	virtual ~a5200_cart_slot_device();

	virtual const char *file_extensions() const noexcept override { return "bin,rom,car,a52"; }

	// slot interface overrides
	virtual std::string get_default_card_software(get_default_card_software_hook &hook) const override;
};

// ======================> xegs_cart_slot_device

class xegs_cart_slot_device : public a800_cart_slot_device
{
public:
	// construction/destruction
	template <typename T>
	xegs_cart_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&opts, char const *dflt)
		: xegs_cart_slot_device(mconfig, tag, owner, (uint32_t)0)
	{
		option_reset();
		opts(*this);
		set_default_option(dflt);
		set_fixed(false);
	}
	xegs_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
	virtual ~xegs_cart_slot_device();

	virtual const char *file_extensions() const noexcept override { return "bin,rom,car"; }

	// slot interface overrides
	virtual std::string get_default_card_software(get_default_card_software_hook &hook) const override;
};

// device type definition
DECLARE_DEVICE_TYPE(A800_CART_SLOT,  a800_cart_slot_device)
DECLARE_DEVICE_TYPE(A5200_CART_SLOT, a5200_cart_slot_device)
DECLARE_DEVICE_TYPE(XEGS_CART_SLOT,  xegs_cart_slot_device)

#endif // MAME_BUS_A800_A800_SLOT_H