summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/ql/rom.h
blob: bfd06793d8cdf2c1b55c9eb33c553d2dab10bb96 (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
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************

    Sinclair QL ROM cartridge port emulation

**********************************************************************

                              A     B
                              *  1  *   VDD
                        A12   *  2  *   A14
                         A7   *  3  *   A13
                         A6   *  4  *   A8
                         A5   *  5  *   A9
                       SLOT      6      SLOT
                         A4   *  7  *   A11
                         A3   *  8  *   ROMOEH
                         A2   *  9  *   A10
                         A1   * 10  *   A15
                         A0   * 11  *   D7
                         D0   * 12  *   D6
                         D1   * 13  *   D5
                         D2   * 14  *   D4
                        GND   * 15  *   D3

**********************************************************************/

#ifndef MAME_BUS_QL_ROM_H
#define MAME_BUS_QL_ROM_H

#pragma once

#include "softlist_dev.h"


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

// ======================> device_ql_rom_cartridge_card_interface

class ql_rom_cartridge_slot_device;

class device_ql_rom_cartridge_card_interface : public device_interface
{
	friend class ql_rom_cartridge_slot_device;

public:
	// construction/destruction
	virtual ~device_ql_rom_cartridge_card_interface();

	virtual void romoeh_w(int state) { m_romoeh = state; }
	virtual uint8_t read(offs_t offset, uint8_t data) { return data; }
	virtual void write(offs_t offset, uint8_t data) { }

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

	virtual void interface_post_start() override;

	std::unique_ptr<uint8_t[]> m_rom;

	ql_rom_cartridge_slot_device *const m_slot;

	int m_romoeh;
};


// ======================> ql_rom_cartridge_slot_device

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

	// computer interface
	uint8_t read(offs_t offset, uint8_t data) { if (m_card) data = m_card->read(offset, data); return data; }
	void write(offs_t offset, uint8_t data) { if (m_card) m_card->write(offset, data); }
	DECLARE_WRITE_LINE_MEMBER( romoeh_w ) { if (m_card) m_card->romoeh_w(state); }

protected:
	// device-level overrides
	virtual void device_resolve_objects() override;
	virtual void device_start() override;

	// image-level overrides
	virtual image_init_result call_load() override;
	virtual const software_list_loader &get_software_list_loader() const override { return rom_software_list_loader::instance(); }

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

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

	device_ql_rom_cartridge_card_interface *m_card;
};


// device type definition
DECLARE_DEVICE_TYPE(QL_ROM_CARTRIDGE_SLOT, ql_rom_cartridge_slot_device)

void ql_rom_cartridge_cards(device_slot_interface &device);

#endif // MAME_BUS_QL_ROM_H