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
132
133
134
135
136
137
138
139
140
|
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Commodore 8050/8250/SFD-1001 Disk Drive emulation
**********************************************************************/
#pragma once
#ifndef __C8050__
#define __C8050__
#include "emu.h"
#include "ieee488.h"
#include "c8050fdc.h"
#include "cpu/m6502/m6502.h"
#include "cpu/m6502/m6504.h"
#include "machine/6522via.h"
#include "machine/mos6530n.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> c8050_t
class c8050_t : public device_t,
public device_ieee488_interface
{
public:
// construction/destruction
c8050_t(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
c8050_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual const rom_entry *device_rom_region() const;
virtual machine_config_constructor device_mconfig_additions() const;
virtual ioport_constructor device_input_ports() const;
DECLARE_READ8_MEMBER( dio_r );
DECLARE_WRITE8_MEMBER( dio_w );
DECLARE_READ8_MEMBER( riot1_pa_r );
DECLARE_WRITE8_MEMBER( riot1_pa_w );
DECLARE_READ8_MEMBER( riot1_pb_r );
DECLARE_WRITE8_MEMBER( riot1_pb_w );
DECLARE_WRITE8_MEMBER( via_pb_w );
DECLARE_READ8_MEMBER( pi_r );
DECLARE_WRITE8_MEMBER( pi_w );
DECLARE_FLOPPY_FORMATS( floppy_formats );
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
// device_ieee488_interface overrides
virtual void ieee488_atn(int state);
virtual void ieee488_ifc(int state);
inline void update_ieee_signals();
required_device<m6502_device> m_maincpu;
required_device<m6504_device> m_fdccpu;
required_device<mos6532_t> m_riot0;
required_device<mos6532_t> m_riot1;
required_device<mos6530_t> m_miot;
required_device<via6522_device> m_via;
required_device<floppy_connector> m_floppy0;
optional_device<floppy_connector> m_floppy1;
required_device<c8050_fdc_t> m_fdc;
required_ioport m_address;
// IEEE-488 bus
int m_rfdo; // not ready for data output
int m_daco; // not data accepted output
int m_atna; // attention acknowledge
int m_ifc;
};
// ======================> c8250_t
class c8250_t : public c8050_t
{
public:
// construction/destruction
c8250_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const;
DECLARE_FLOPPY_FORMATS( floppy_formats );
};
// ======================> c8250lp_t
class c8250lp_t : public c8050_t
{
public:
// construction/destruction
c8250lp_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual const rom_entry *device_rom_region() const;
virtual machine_config_constructor device_mconfig_additions() const;
DECLARE_FLOPPY_FORMATS( floppy_formats );
};
// ======================> sfd1001_t
class sfd1001_t : public c8050_t
{
public:
// construction/destruction
sfd1001_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual const rom_entry *device_rom_region() const;
virtual machine_config_constructor device_mconfig_additions() const;
DECLARE_FLOPPY_FORMATS( floppy_formats );
};
// device type definition
extern const device_type C8050;
extern const device_type C8250;
extern const device_type C8250LP;
extern const device_type SFD1001;
#endif
|