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
|
// license: GPL-2.0+
// copyright-holders: Dirk Best
/***************************************************************************
VTech Laser/VZ Memory Expansion Slot
44-pin slot
22 GND 23 NC
21 +5VDC 24 A11
20 /IORQ 25 A12
19 /RD 26 A13
18 /NMI 27 A14
17 /WAIT 28 A15
16 /MI 29 CLK
15 /RFSH 30 D4
14 D7 31 D3
13 D2 32 D5
12 A1 33 D6
11 A2 34 NC
10 A3 35 A0
9 A4 36 D0
8 A5 37 D1
7 A6 38 /INT
6 A7 39 /HALT
5 A8 40 /MERQ
4 A9 41 /WR
3 A10 42 /NC
2 /RESET 43 +9VDC
1 GND 44 NC
***************************************************************************/
#ifndef MAME_BUS_VTECH_MEMEXP_MEMEXP_H
#define MAME_BUS_VTECH_MEMEXP_MEMEXP_H
#pragma once
#include "machine/bankdev.h"
// include here so drivers don't need to
#include "carts.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class device_vtech_memexp_interface;
class vtech_memexp_slot_device : public device_t, public device_single_card_slot_interface<device_vtech_memexp_interface>
{
friend class device_vtech_memexp_interface;
public:
// construction/destruction
vtech_memexp_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock = XTAL());
virtual ~vtech_memexp_slot_device();
template <typename T> void set_memspace(T &&tag, int spacenum) { m_memspace.set_tag(std::forward<T>(tag), spacenum); }
template <typename T> void set_iospace(T &&tag, int spacenum) { m_iospace.set_tag(std::forward<T>(tag), spacenum); }
// callbacks
auto int_handler() { return m_int_handler.bind(); }
auto nmi_handler() { return m_nmi_handler.bind(); }
auto reset_handler() { return m_reset_handler.bind(); }
// called from cart device
DECLARE_WRITE_LINE_MEMBER( int_w ) { m_int_handler(state); }
DECLARE_WRITE_LINE_MEMBER( nmi_w ) { m_nmi_handler(state); }
DECLARE_WRITE_LINE_MEMBER( reset_w ) { m_reset_handler(state); }
protected:
// device-level overrides
virtual void device_start() override;
private:
required_address_space m_memspace;
required_address_space m_iospace;
devcb_write_line m_int_handler;
devcb_write_line m_nmi_handler;
devcb_write_line m_reset_handler;
device_vtech_memexp_interface *m_module;
};
// class representing interface-specific live memexp device
class device_vtech_memexp_interface : public device_interface
{
public:
// construction/destruction
device_vtech_memexp_interface(const machine_config &mconfig, device_t &device);
virtual ~device_vtech_memexp_interface();
virtual uint8_t mreq_r(offs_t offset) { return 0xff; }
virtual void mreq_w(offs_t offset, uint8_t data) { }
virtual uint8_t iorq_r(offs_t offset) { return 0xff; }
virtual void iorq_w(offs_t offset, uint8_t data) { }
protected:
vtech_memexp_slot_device *m_slot;
};
// base memory expansion device
class vtech_memexp_device : public device_t, public device_vtech_memexp_interface
{
public:
// construction/destruction
vtech_memexp_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, const XTAL &clock);
// from host
virtual uint8_t mreq_r(offs_t offset) override;
virtual void mreq_w(offs_t offset, uint8_t data) override;
virtual uint8_t iorq_r(offs_t offset) override;
virtual void iorq_w(offs_t offset, uint8_t data) override;
protected:
virtual void device_add_mconfig(machine_config &config) override;
virtual void device_start() override;
virtual void mem_map(address_map &map) { }
virtual void io_map(address_map &map) { }
required_device<address_map_bank_device> m_mem;
required_device<address_map_bank_device> m_io;
};
// device type definition
DECLARE_DEVICE_TYPE(VTECH_MEMEXP_SLOT, vtech_memexp_slot_device)
#endif // MAME_BUS_VTECH_MEMEXP_MEMEXP_H
|