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r32527 Saturday 4th October, 2014 at 12:20:38 UTC by hap
dragrace.c: Added tachometer outputs. [Comboman]

[src/mame/drivers]	dragrace.c
[src/mame/includes]	dragrace.h
[src/mame/video]	dragrace.c

trunk/src/mame/drivers/dragrace.c

r32526	r32527
1	1	/***************************************************************************
2	2
3		Atari Drag Race Driver
	3	Atari Drag Race Driver
4	4
5	5	***************************************************************************/
6	6
r32526	r32527
14	14
15	15	TIMER_DEVICE_CALLBACK_MEMBER(dragrace_state::dragrace_frame_callback)
16	16	{
17		int i;
18	17	static const char *const portnames[] = { "P1", "P2" };
19	18
20		for (i = 0; i < 2; i++)
	19	for (int i = 0; i < 2; i++)
21	20	{
22	21	switch (ioport(portnames[i])->read())
23	22	{
24		case 0x01: m_gear[i] = 1; break;
25		case 0x02: m_gear[i] = 2; break;
26		case 0x04: m_gear[i] = 3; break;
27		case 0x08: m_gear[i] = 4; break;
28		case 0x10: m_gear[i] = 0; break;
	23	case 0x01: m_gear[i] = 1; break;
	24	case 0x02: m_gear[i] = 2; break;
	25	case 0x04: m_gear[i] = 3; break;
	26	case 0x08: m_gear[i] = 4; break;
	27	case 0x10: m_gear[i] = 0; break;
29	28	}
30	29	}
31	30
r32526	r32527
85	84	m_discrete->write(space, DRAGRACE_ATTRACT_EN, (m_misc_flags & 0x00001000) ? 1: 0); // Attract enable
86	85	m_discrete->write(space, DRAGRACE_LOTONE_EN, (m_misc_flags & 0x00002000) ? 1: 0);  // LoTone enable
87	86	m_discrete->write(space, DRAGRACE_HITONE_EN, (m_misc_flags & 0x20000000) ? 1: 0);  // HiTone enable
	87
	88	// the tachometers are driven from the same frequency generator that creates the engine sound
	89	output_set_value("tachometer", ~m_misc_flags & 0x0000001f);
	90	output_set_value("tachometer2", (~m_misc_flags & 0x001f0000) >> 0x10);
88	91	}
89	92
90	93	WRITE8_MEMBER(dragrace_state::dragrace_misc_w)
r32526	r32527
116	119	UINT8 maskA = 1 << (offset % 8);
117	120	UINT8 maskB = 1 << (offset / 8);
118	121
119		int i;
120
121		for (i = 0; i < 2; i++)
	122	for (int i = 0; i < 2; i++)
122	123	{
123	124	int in = ioport(portnames[i])->read();
124	125
r32526	r32527
139	140	int bitB[2];
140	141	static const char *const dialnames[] = { "DIAL1", "DIAL2" };
141	142
142		int i;
143
144		for (i = 0; i < 2; i++)
	143	for (int i = 0; i < 2; i++)
145	144	{
146	145	int dial = ioport(dialnames[i])->read();
147	146

trunk/src/mame/includes/dragrace.h

r32526	r32527
47	47
48	48	/* devices */
49	49	required_device<discrete_device> m_discrete;
	50	required_device<cpu_device> m_maincpu;
	51	required_device<gfxdecode_device> m_gfxdecode;
	52	required_device<screen_device> m_screen;
	53
50	54	DECLARE_WRITE8_MEMBER(dragrace_misc_w);
51	55	DECLARE_WRITE8_MEMBER(dragrace_misc_clear_w);
52	56	DECLARE_READ8_MEMBER(dragrace_input_r);
r32526	r32527
60	64	UINT32 screen_update_dragrace(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
61	65	TIMER_DEVICE_CALLBACK_MEMBER(dragrace_frame_callback);
62	66	void dragrace_update_misc_flags( address_space &space );
63		required_device<cpu_device> m_maincpu;
64		required_device<gfxdecode_device> m_gfxdecode;
65		required_device<screen_device> m_screen;
66	67	};
67	68
68	69	/*----------- defined in audio/dragrace.c -----------*/

trunk/src/mame/video/dragrace.c

r32526	r32527
1	1	/***************************************************************************
2	2
3		Atari Drag Race video emulation
	3	Atari Drag Race video emulation
4	4
5	5	***************************************************************************/
6	6
r32526	r32527
21	21
22	22	switch (code & 0xA0)
23	23	{
24		case 0x00:
25		col = 0;
26		break;
27		case 0x20:
28		col = 1;
29		break;
30		case 0x80:
31		col = (code & 0x40) ? 1 : 0;
32		break;
33		case 0xA0:
34		col = (code & 0x40) ? 3 : 2;
35		break;
	24	case 0x00:
	25	col = 0;
	26	break;
	27	case 0x20:
	28	col = 1;
	29	break;
	30	case 0x80:
	31	col = (code & 0x40) ? 1 : 0;
	32	break;
	33	case 0xA0:
	34	col = (code & 0x40) ? 3 : 2;
	35	break;
36	36	}
37	37
38	38	SET_TILE_INFO_MEMBER(((code & 0xA0) == 0x80) ? 1 : 0, num, col, 0);
r32526	r32527
47	47
48	48	UINT32 dragrace_state::screen_update_dragrace(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
49	49	{
50		int y;
51
52	50	m_bg_tilemap->mark_all_dirty();
53	51
54		for (y = 0; y < 256; y += 4)
	52	for (int y = 0; y < 256; y += 4)
55	53	{
56	54	rectangle rect = cliprect;
57	55
r32526	r32527
68	66
69	67	m_bg_tilemap->draw(screen, bitmap, rect, 0, 0);
70	68	}
	69
71	70	return 0;
72	71	}

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