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r30904 Monday 9th June, 2014 at 01:56:49 UTC by hap
fixed tilemap and 'hvc' ram size

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

trunk/src/mame/drivers/nitedrvr.c

r30903	r30904
44	44
45	45	static ADDRESS_MAP_START( nitedrvr_map, AS_PROGRAM, 8, nitedrvr_state )
46	46	AM_RANGE(0x0000, 0x00ff) AM_RAM AM_MIRROR(0x100) // SCRAM
47		AM_RANGE(0x0200, 0x027f) AM_RAM_WRITE(nitedrvr_videoram_w) AM_MIRROR(0x180) AM_SHARE("videoram") // PFW
48		AM_RANGE(0x0400, 0x05ff) AM_WRITE(nitedrvr_hvc_w) AM_SHARE("hvc") // POSH, POSV, CHAR, Watchdog
	47	AM_RANGE(0x0200, 0x027f) AM_WRITE(nitedrvr_videoram_w) AM_MIRROR(0x180) AM_SHARE("videoram") // PFW
	48	AM_RANGE(0x0400, 0x042f) AM_WRITEONLY AM_MIRROR(0x1c0) AM_SHARE("hvc") // POSH, POSV, CHAR
	49	AM_RANGE(0x0430, 0x043f) AM_WRITE(watchdog_reset_w) AM_MIRROR(0x1c0)
49	50	AM_RANGE(0x0600, 0x07ff) AM_READ(nitedrvr_in0_r)
50	51	AM_RANGE(0x0800, 0x09ff) AM_READ(nitedrvr_in1_r)
51	52	AM_RANGE(0x0a00, 0x0bff) AM_WRITE(nitedrvr_out0_w)
52	53	AM_RANGE(0x0c00, 0x0dff) AM_WRITE(nitedrvr_out1_w)
53		AM_RANGE(0x8000, 0x807f) AM_RAM AM_MIRROR(0x380) AM_SHARE("videoram") // PFR
	54	AM_RANGE(0x8000, 0x807f) AM_READONLY AM_MIRROR(0x380) AM_SHARE("videoram") // PFR
54	55	AM_RANGE(0x8400, 0x87ff) AM_READWRITE(nitedrvr_steering_reset_r, nitedrvr_steering_reset_w)
55	56	AM_RANGE(0x9000, 0x9fff) AM_ROM // ROM1-ROM2
56	57	AM_RANGE(0xfff0, 0xffff) AM_ROM // ROM2 for 6502 vectors
r30903	r30904
130	131	GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 1 )
131	132	GFXDECODE_END
132	133
133		/* Machine Initialization */
134
135	134	/* Machine Driver */
136	135
137	136	static MACHINE_CONFIG_START( nitedrvr, nitedrvr_state )
r30903	r30904
139	138	/* basic machine hardware */
140	139	MCFG_CPU_ADD("maincpu", M6502, XTAL_12_096MHz/12) // 1 MHz
141	140	MCFG_CPU_PROGRAM_MAP(nitedrvr_map)
142		MCFG_CPU_VBLANK_INT_DRIVER("screen", nitedrvr_state, irq0_line_hold)
	141	MCFG_CPU_VBLANK_INT_DRIVER("screen", nitedrvr_state, irq0_line_hold)
143	142	MCFG_WATCHDOG_VBLANK_INIT(3)
144	143
145
146	144	MCFG_TIMER_DRIVER_ADD_PERIODIC("crash_timer", nitedrvr_state, nitedrvr_crash_toggle_callback, PERIOD_OF_555_ASTABLE(RES_K(180), 330, CAP_U(1)))
147	145
148	146	/* video hardware */

trunk/src/mame/includes/nitedrvr.h

r30903	r30904
58	58	DECLARE_WRITE8_MEMBER(nitedrvr_out0_w);
59	59	DECLARE_WRITE8_MEMBER(nitedrvr_out1_w);
60	60	DECLARE_WRITE8_MEMBER(nitedrvr_videoram_w);
61		DECLARE_WRITE8_MEMBER(nitedrvr_hvc_w);
62	61	TILE_GET_INFO_MEMBER(get_bg_tile_info);
63	62	virtual void machine_start();
64	63	virtual void machine_reset();
65	64	virtual void video_start();
66	65	UINT32 screen_update_nitedrvr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
67	66	TIMER_DEVICE_CALLBACK_MEMBER(nitedrvr_crash_toggle_callback);
68		void draw_box( bitmap_ind16 &bitmap, int bx, int by, int ex, int ey );
69		void draw_roadway( bitmap_ind16 &bitmap );
70		int nitedrvr_steering(  );
	67	void draw_box(bitmap_ind16 &bitmap, const rectangle &cliprect, int bx, int by, int ex, int ey);
	68	void draw_roadway(bitmap_ind16 &bitmap, const rectangle &cliprect);
	69	int nitedrvr_steering();
71	70	};
72	71
73	72	/*----------- defined in audio/nitedrvr.c -----------*/

trunk/src/mame/video/nitedrvr.c

r30903	r30904
13	13	m_bg_tilemap->mark_tile_dirty(offset);
14	14	}
15	15
16		WRITE8_MEMBER(nitedrvr_state::nitedrvr_hvc_w)
17		{
18		m_hvc[offset & 0x3f] = data;
19	16
20		if ((offset & 0x30) == 0x30)
21		watchdog_reset_w(space, 0, 0);
22		}
23
24	17	TILE_GET_INFO_MEMBER(nitedrvr_state::get_bg_tile_info)
25	18	{
26	19	int code = m_videoram[tile_index] & 0x3f;
r30903	r30904
28	21	SET_TILE_INFO_MEMBER(0, code, 0, 0);
29	22	}
30	23
31
32
33	24	void nitedrvr_state::video_start()
34	25	{
35		m_bg_tilemap = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(nitedrvr_state::get_bg_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
	26	m_bg_tilemap = &machine().tilemap().create(m_gfxdecode, tilemap_get_info_delegate(FUNC(nitedrvr_state::get_bg_tile_info),this), TILEMAP_SCAN_ROWS, 8, 8, 32, 8);
36	27	}
37	28
38		void nitedrvr_state::draw_box( bitmap_ind16 &bitmap, int bx, int by, int ex, int ey )
	29	void nitedrvr_state::draw_box(bitmap_ind16 &bitmap, const rectangle &cliprect, int bx, int by, int ex, int ey)
39	30	{
40		int x, y;
41
42		for (y = by; y < ey; y++)
	31	for (int y = by; y < ey; y++)
43	32	{
44		for (x = bx; x < ex; x++)
45		if ((y < 256) && (x < 256))
	33	for (int x = bx; x < ex; x++)
	34	if (cliprect.contains(x, y))
46	35	bitmap.pix16(y, x) = 1;
47	36	}
48
49		return;
50	37	}
51	38
52		void nitedrvr_state::draw_roadway( bitmap_ind16 &bitmap )
	39	void nitedrvr_state::draw_roadway(bitmap_ind16 &bitmap, const rectangle &cliprect)
53	40	{
54		int roadway;
55
56		for (roadway = 0; roadway < 16; roadway++)
	41	for (int roadway = 0; roadway < 16; roadway++)
57	42	{
58		int bx, by, ex, ey;
	43	int bx = m_hvc[roadway];
	44	int by = m_hvc[roadway + 16];
	45	int ex = bx + ((m_hvc[roadway + 32] & 0xf0) >> 4);
	46	int ey = by + (16 - (m_hvc[roadway + 32] & 0x0f));
59	47
60		bx = m_hvc[roadway];
61		by = m_hvc[roadway + 16];
62		ex = bx + ((m_hvc[roadway + 32] & 0xf0) >> 4);
63		ey = by + (16 - (m_hvc[roadway + 32] & 0x0f));
64
65		draw_box(bitmap, bx, by, ex, ey);
	48	draw_box(bitmap, cliprect, bx, by, ex, ey);
66	49	}
67	50	}
68	51
69	52	UINT32 nitedrvr_state::screen_update_nitedrvr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
70	53	{
71		m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
72		draw_roadway(bitmap);
	54	bitmap.fill(0, cliprect);
	55
	56	// don't wrap playfield
	57	rectangle clip = cliprect;
	58	if (clip.max_y > 63) clip.max_y = 63;
	59
	60	m_bg_tilemap->draw(screen, bitmap, clip, 0, 0);
	61	draw_roadway(bitmap, cliprect);
	62
73	63	return 0;
74	64	}

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