summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/video/uv201.h
blob: 8aca9b35656b4046ef14a70afd938ef34118fc2d (plain) (blame)
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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************

    VideoBrain UV201/UV202 video chip emulation

**********************************************************************
                            _____   _____
                   GND   1 |*    \_/     | 40  DMAREQ
                     G   2 |             | 39  /CE
                     I   3 |             | 38  RESET
                     B   4 |             | 37  BISTROBE
                     R   5 |             | 36  UMIREQ0
                   BA0   6 |             | 35  BRCLK
                   BA1   7 |             | 34  HBLANK
                   BA2   8 |             | 33  VBLANK
                   BA3   9 |             | 32  R/W
                   BA4  10 |    UV201    | 31  keypad column 8
                   BA5  11 |             | 30  EXT INT
                   BA6  12 |             | 29  FIELD
                   BA7  13 |             | 28  BD7
                   BA8  14 |             | 27  BD6
                   BA9  15 |             | 26  BD5
                  BA10  16 |             | 25  BD4
                  BA11  17 |             | 24  BD3
                  BA12  18 |             | 23  BD2
                   +5V  19 |             | 22  BD1
                  +12V  20 |_____________| 21  BD0

                            _____   _____
               UMIREQ1   1 |*    \_/     | 40  BISTROBE
               UMIREQ0   2 |             | 39  CPUREQ1
               CPUREQ0   3 |             | 38  GND
                   XIN   4 |             | 37  /800-BFF
                  XOUT   5 |             | 36  RST
               DMAREQ0   6 |             | 35  DMAREQ1
               CPU CLK   7 |             | 34  COLCLK
                  WACK   8 |             | 33  BRCLK
                    D0   9 |             | 32  D7
                   BD0  10 |    UV202    | 31  BD7
                    D1  11 |             | 30  D6
                   BD1  12 |             | 29  BD6
                    D2  13 |             | 28  D5
                   BD2  14 |             | 27  BD5
                    D3  15 |             | 26  D4
                   BD3  16 |             | 25  BD4
                HBLANK  17 |             | 24  FIELD
                VBLANK  18 |             | 23  SCANLINE
                 BURST  19 |             | 22  +12V
                CSYNCH  20 |_____________| 21  +5V

**********************************************************************/

#pragma once

#ifndef __UV201__
#define __UV201__

#include "emu.h"



//**************************************************************************
//  INTERFACE CONFIGURATION MACROS
//**************************************************************************

#define MCFG_UV201_ADD(_tag, _screen_tag, _clock, _config) \
	MCFG_SCREEN_ADD(_screen_tag, RASTER) \
	MCFG_SCREEN_UPDATE_DEVICE(_tag, uv201_device, screen_update) \
	MCFG_SCREEN_RAW_PARAMS(_clock, 232, 18, 232, 262, 21, 262) \
	MCFG_DEVICE_ADD(_tag, UV201, _clock) \
	MCFG_VIDEO_SET_SCREEN(_screen_tag)


#define MCFG_UV201_EXT_INT_CALLBACK(_write) \
	devcb = &uv201_device::set_ext_int_wr_callback(*device, DEVCB_##_write);

#define MCFG_UV201_HBLANK_CALLBACK(_write) \
	devcb = &uv201_device::set_hblank_wr_callback(*device, DEVCB_##_write);

#define MCFG_UV201_DB_CALLBACK(_read) \
	devcb = &uv201_device::set_db_rd_callback(*device, DEVCB_##_read);



//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

// ======================> uv201_device

class uv201_device :    public device_t,
						public device_video_interface
{
public:
	// construction/destruction
	uv201_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	template<class _Object> static devcb_base &set_ext_int_wr_callback(device_t &device, _Object object) { return downcast<uv201_device &>(device).m_write_ext_int.set_callback(object); }
	template<class _Object> static devcb_base &set_hblank_wr_callback(device_t &device, _Object object) { return downcast<uv201_device &>(device).m_write_hblank.set_callback(object); }
	template<class _Object> static devcb_base &set_db_rd_callback(device_t &device, _Object object) { return downcast<uv201_device &>(device).m_read_db.set_callback(object); }

	DECLARE_READ8_MEMBER( read );
	DECLARE_WRITE8_MEMBER( write );

	DECLARE_WRITE_LINE_MEMBER( ext_int_w );
	DECLARE_READ_LINE_MEMBER( kbd_r );

	uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);

protected:
	// device-level overrides
	virtual void device_start() override;
	virtual void device_reset() override;
	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;

private:
	enum
	{
		TIMER_Y_ODD,
		TIMER_Y_EVEN,
		TIMER_HBLANK_ON,
		TIMER_HBLANK_OFF
	};

	void initialize_palette();
	int get_field_vpos();
	int get_field();
	void set_y_interrupt();
	void do_partial_update();

	devcb_write_line   m_write_ext_int;
	devcb_write_line   m_write_hblank;
	devcb_read8        m_read_db;

	rgb_t m_palette_val[32];
	uint8_t m_ram[0x90];
	uint8_t m_y_int;
	uint8_t m_fmod;
	uint8_t m_bg;
	uint8_t m_cmd;
	uint8_t m_freeze_x;
	uint16_t m_freeze_y;
	int m_field;

	// timers
	emu_timer *m_timer_y_odd;
	emu_timer *m_timer_y_even;
	emu_timer *m_timer_hblank_on;
	emu_timer *m_timer_hblank_off;
};


// device type definition
extern const device_type UV201;



#endif