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
|
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
RCA Cosmac VIP Byte Input/Output port emulation
**********************************************************************
A IN 0
B IN 1
C IN 2
D IN 3
E IN 4
F IN 5
H IN 6
J IN 7
K INST
L _EF4
M OUT 0
N OUT 1
P OUT 2
R OUT 3
S OUT 4
T OUT 5
U OUT 6
V OUT 7
W Q
X _EF3
Y +5 V
Z GND
**********************************************************************/
#ifndef MAME_BUS_VIP_BYTEIO_H
#define MAME_BUS_VIP_BYTEIO_H
#pragma once
//**************************************************************************
// CONSTANTS
//**************************************************************************
#define VIP_BYTEIO_PORT_TAG "byteio"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> vip_byteio_port_device
class device_vip_byteio_port_interface;
class vip_byteio_port_device : public device_t, public device_single_card_slot_interface<device_vip_byteio_port_interface>
{
public:
// construction/destruction
template <typename T>
vip_byteio_port_device(const machine_config &mconfig, const char *tag, device_t *owner, T &&opts, const char *dflt)
: vip_byteio_port_device(mconfig, tag, owner, 0)
{
set_options(std::forward<T>(opts), dflt, false);
}
vip_byteio_port_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
auto inst_callback() { return m_write_inst.bind(); }
// computer interface
uint8_t in_r();
void out_w(uint8_t data);
int ef3_r();
int ef4_r();
void q_w(int state);
// cartridge interface
void inst_w(int state) { m_write_inst(state); }
protected:
// device_t implementation
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
devcb_write_line m_write_inst;
device_vip_byteio_port_interface *m_cart;
};
// ======================> device_vip_byteio_port_interface
// class representing interface-specific live c64_expansion card
class device_vip_byteio_port_interface : public device_interface
{
public:
virtual uint8_t vip_in_r() { return 0xff; }
virtual void vip_out_w(uint8_t data) { }
virtual int vip_ef3_r() { return CLEAR_LINE; }
virtual int vip_ef4_r() { return CLEAR_LINE; }
virtual void vip_q_w(int state) { }
protected:
// construction/destruction
device_vip_byteio_port_interface(const machine_config &mconfig, device_t &device);
vip_byteio_port_device *m_slot;
};
// device type declaration
DECLARE_DEVICE_TYPE(VIP_BYTEIO_PORT, vip_byteio_port_device)
// slot devices
#include "vp620.h"
void vip_byteio_cards(device_slot_interface &device);
#endif // MAME_BUS_VIP_BYTEIO_H
|