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
|
// license:BSD-3-Clause
// copyright-holders:Luca Elia, Nicola Salmoria, AJR
/**********************************************************************
Dynax blitter, "revision 2" (TC17G032AP-0246 custom DIP64)
**********************************************************************/
#ifndef MAME_VIDEO_DYNAX_BLITTER_REV2_H
#define MAME_VIDEO_DYNAX_BLITTER_REV2_H
#pragma once
#include "dirom.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> dynax_blitter_rev2_device
class dynax_blitter_rev2_device : public device_t, public device_rom_interface<20>
{
public:
// construction/destruction
dynax_blitter_rev2_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
// static configuration
auto vram_out_cb() { return m_vram_out_cb.bind(); }
auto scrollx_cb() { return m_scrollx_cb.bind(); }
auto scrolly_cb() { return m_scrolly_cb.bind(); }
auto ready_cb() { return m_ready_cb.bind(); }
// write handlers
void pen_w(uint8_t data);
virtual void regs_w(offs_t offset, uint8_t data);
// getter
u8 blit_pen() const { return m_blit_pen; }
protected:
// delegated construction
dynax_blitter_rev2_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock);
// device-level overrides
virtual void device_resolve_objects() override;
virtual void device_start() override;
// internal helpers
void plot_pixel(int x, int y, int pen);
u32 blitter_draw(u32 src, int pen, int x, int y);
void blitter_start();
void scroll_w(u8 data);
// device callbacks
devcb_write8 m_vram_out_cb;
devcb_write8 m_scrollx_cb;
devcb_write8 m_scrolly_cb;
devcb_write_line m_ready_cb;
// internal registers
u8 m_blit_pen = 0;
u8 m_blit_wrap_enable = 0;
u8 m_blit_x = 0;
u8 m_blit_y = 0;
u8 m_blit_flags = 0;
u32 m_blit_src = 0;
};
// ======================> cdracula_blitter_device
class cdracula_blitter_device : public dynax_blitter_rev2_device
{
public:
// construction/destruction
cdracula_blitter_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
auto blit_dest_cb() { return m_blit_dest_cb.bind(); }
// write handlers
void flags_w(uint8_t data);
virtual void regs_w(offs_t offset, uint8_t data) override;
private:
// device-level overrides
virtual void device_resolve_objects() override;
// device callbacks
devcb_write8 m_blit_dest_cb;
};
// device type declarations
DECLARE_DEVICE_TYPE(DYNAX_BLITTER_REV2, dynax_blitter_rev2_device)
DECLARE_DEVICE_TYPE(CDRACULA_BLITTER, cdracula_blitter_device)
#endif // MAME_VIDEO_DYNAX_BLITTER_REV2_H
|