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
|
// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
Ralph Allen Colour VDU Card
**********************************************************************/
#ifndef MAME_BUS_TANBUS_RAVDU_H
#define MAME_BUS_TANBUS_RAVDU_H
#pragma once
#include "bus/tanbus/tanbus.h"
#include "video/saa5050.h"
#include "video/mc6845.h"
#include "screen.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class tanbus_ravdu_device :
public device_t,
public device_tanbus_interface
{
public:
static constexpr feature_type imperfect_features() { return feature::GRAPHICS; }
// construction/destruction
tanbus_ravdu_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
virtual uint8_t read(offs_t offset, int inhrom, int inhram, int be) override;
virtual void write(offs_t offset, uint8_t data, int inhrom, int inhram, int be) override;
virtual void set_inhibit_lines(offs_t offset, int &inhram, int &inhrom) override;
private:
uint8_t videoram_r(offs_t offset);
MC6845_UPDATE_ROW(crtc_update_row);
void vsync_changed(int state);
required_device<screen_device> m_screen;
required_device<mc6845_device> m_crtc;
required_device<saa5055_device> m_trom;
std::unique_ptr<uint8_t[]> m_videoram;
};
// device type definition
DECLARE_DEVICE_TYPE(TANBUS_RAVDU, tanbus_ravdu_device)
#endif // MAME_BUS_TANBUS_RAVDU_H
|