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
|
// license:BSD-3-Clause
// copyright-holders:Wilbert Pol, Miodrag Milanovic
#pragma once
#ifndef __ISA_MDA_H__
#define __ISA_MDA_H__
#include "emu.h"
#include "isa.h"
#include "video/mc6845.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> isa8_mda_device
class isa8_mda_device : public device_t,
public device_isa8_card_interface
{
public:
friend class isa8_hercules_device;
// construction/destruction
isa8_mda_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
isa8_mda_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const override;
virtual const tiny_rom_entry *device_rom_region() const override;
DECLARE_WRITE_LINE_MEMBER(hsync_changed);
DECLARE_WRITE_LINE_MEMBER(vsync_changed);
virtual DECLARE_READ8_MEMBER(io_read);
virtual DECLARE_WRITE8_MEMBER(io_write);
virtual DECLARE_READ8_MEMBER(status_r);
virtual DECLARE_WRITE8_MEMBER(mode_control_w);
WRITE_LINE_MEMBER(pc_cpu_line);
virtual MC6845_UPDATE_ROW( crtc_update_row );
MC6845_UPDATE_ROW( mda_text_inten_update_row );
MC6845_UPDATE_ROW( mda_text_blink_update_row );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
public:
int m_framecnt;
UINT8 m_mode_control;
int m_update_row_type;
UINT8 *m_chr_gen;
UINT8 m_vsync;
UINT8 m_hsync;
std::vector<UINT8> m_videoram;
UINT8 m_pixel;
required_device<palette_device> m_palette;
};
// device type definition
extern const device_type ISA8_MDA;
// ======================> isa8_hercules_device
class isa8_hercules_device :
public isa8_mda_device
{
public:
// construction/destruction
isa8_hercules_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const override;
virtual const tiny_rom_entry *device_rom_region() const override;
virtual DECLARE_READ8_MEMBER(io_read) override;
virtual DECLARE_WRITE8_MEMBER(io_write) override;
virtual DECLARE_READ8_MEMBER(status_r) override;
virtual DECLARE_WRITE8_MEMBER(mode_control_w) override;
virtual MC6845_UPDATE_ROW( crtc_update_row ) override;
MC6845_UPDATE_ROW( hercules_gfx_update_row );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
public:
UINT8 m_configuration_switch; //hercules
};
// device type definition
extern const device_type ISA8_HERCULES;
// ======================> isa8_ec1840_0002_device
class isa8_ec1840_0002_device :
public isa8_mda_device
{
public:
// construction/destruction
isa8_ec1840_0002_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const override;
virtual DECLARE_WRITE8_MEMBER(mode_control_w) override;
virtual MC6845_UPDATE_ROW( crtc_update_row ) override;
MC6845_UPDATE_ROW( mda_lowres_text_inten_update_row );
MC6845_UPDATE_ROW( mda_lowres_text_blink_update_row );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
public:
std::unique_ptr<UINT8[]> m_soft_chr_gen;
};
// device type definition
extern const device_type ISA8_EC1840_0002;
#endif /* __ISA_MDA_H__ */
|