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
|
/**********************************************************************
Commodore PET Memory Expansion Port emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************
**********************************************************************/
#pragma once
#ifndef __PET_EXPANSION_SLOT__
#define __PET_EXPANSION_SLOT__
#include "emu.h"
//**************************************************************************
// CONSTANTS
//**************************************************************************
#define PET_EXPANSION_SLOT_TAG "exp"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_PET_EXPANSION_SLOT_ADD(_tag, _clock, _slot_intf, _def_slot, _def_inp) \
MCFG_DEVICE_ADD(_tag, PET_EXPANSION_SLOT, _clock) \
MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, _def_inp, false)
#define MCFG_PET_EXPANSION_SLOT_DMA_CALLBACKS(_read, _write) \
downcast<pet_expansion_slot_device *>(device)->set_callbacks(DEVCB2_##_read, DEVCB2_##_write);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> pet_expansion_slot_device
class device_pet_expansion_card_interface;
class pet_expansion_slot_device : public device_t,
public device_slot_interface
{
public:
// construction/destruction
pet_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual ~pet_expansion_slot_device();
template<class _read, class _write> void set_callbacks(_read rd, _write wr) {
m_read_dma.set_callback(rd);
m_write_dma.set_callback(wr);
}
// computer interface
int norom_r(address_space &space, offs_t offset, int sel);
UINT8 read(address_space &space, offs_t offset, UINT8 data, int sel);
void write(address_space &space, offs_t offset, UINT8 data, int sel);
DECLARE_READ_LINE_MEMBER( diag_r );
DECLARE_WRITE_LINE_MEMBER( irq_w );
// cartridge interface
UINT8 dma_bd_r(offs_t offset);
void dma_bd_w(offs_t offset, UINT8 data);
int phi2();
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
device_pet_expansion_card_interface *m_card;
devcb2_read8 m_read_dma;
devcb2_write8 m_write_dma;
};
// ======================> device_pet_expansion_card_interface
class device_pet_expansion_card_interface : public device_slot_card_interface
{
friend class pet_expansion_slot_device;
public:
// construction/destruction
device_pet_expansion_card_interface(const machine_config &mconfig, device_t &device);
virtual ~device_pet_expansion_card_interface();
protected:
// runtime
virtual int pet_norom_r(address_space &space, offs_t offset, int sel) { return 1; }
virtual UINT8 pet_bd_r(address_space &space, offs_t offset, UINT8 data, int sel) { return data; };
virtual void pet_bd_w(address_space &space, offs_t offset, UINT8 data, int sel) { };
virtual int pet_diag_r() { return 1; }
virtual void pet_irq_w(int state) { }
pet_expansion_slot_device *m_slot;
};
// device type definition
extern const device_type PET_EXPANSION_SLOT;
#endif
|