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
|
// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
BBC analogue port emulation
**********************************************************************
Pinout:
+5V 1
9 LPSTB
0V 2
10 PB1
0V 3
11 VREF
CH3 4
12 CH2
Analogue GND 5
13 PB0
0V 6
14 VREF
CH1 7
15 CH0
Analogue GND 8
**********************************************************************/
#ifndef MAME_BUS_BBC_ANALOGUE_ANALOGUE_H
#define MAME_BUS_BBC_ANALOGUE_ANALOGUE_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> bbc_analogue_slot_device
class device_bbc_analogue_interface;
class bbc_analogue_slot_device : public device_t, public device_slot_interface
{
public:
// construction/destruction
template <typename T>
bbc_analogue_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&slot_options, const char *default_option)
: bbc_analogue_slot_device(mconfig, tag, owner)
{
option_reset();
slot_options(*this);
set_default_option(default_option);
set_fixed(false);
}
bbc_analogue_slot_device(machine_config const &mconfig, char const *tag, device_t *owner, uint32_t clock = 0);
// callbacks
auto lpstb_handler() { return m_lpstb_handler.bind(); }
DECLARE_WRITE_LINE_MEMBER(lpstb_w) { m_lpstb_handler(state); }
uint8_t ch_r(int channel);
uint8_t pb_r();
protected:
// device-level overrides
virtual void device_validity_check(validity_checker &valid) const override;
virtual void device_start() override;
virtual void device_reset() override;
device_bbc_analogue_interface *m_card;
private:
devcb_write_line m_lpstb_handler;
};
// ======================> device_bbc_analogue_interface
class device_bbc_analogue_interface : public device_slot_card_interface
{
public:
virtual uint8_t ch_r(int channel) { return 0x00; };
virtual uint8_t pb_r() { return 0x30; };
protected:
device_bbc_analogue_interface(const machine_config &mconfig, device_t &device);
bbc_analogue_slot_device *m_slot;
};
// device type definition
DECLARE_DEVICE_TYPE(BBC_ANALOGUE_SLOT, bbc_analogue_slot_device)
void bbc_analogue_devices(device_slot_interface &device);
#endif // MAME_BUS_BBC_ANALOGUE_ANALOGUE_H
|