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r32069 Thursday 11th September, 2014 at 23:45:38 UTC by hap
small cleanup

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

trunk/src/mame/includes/skyfox.h

r32068	r32069
9	9	public:
10	10	skyfox_state(const machine_config &mconfig, device_type type, const char *tag)
11	11	: driver_device(mconfig, type, tag),
12		m_spriteram(*this, "spriteram"),
13	12	m_maincpu(*this, "maincpu"),
	13	m_audiocpu(*this, "audiocpu"),
14	14	m_gfxdecode(*this, "gfxdecode"),
15	15	m_screen(*this, "screen"),
16		m_palette(*this, "palette") { }
	16	m_palette(*this, "palette"),
	17	m_spriteram(*this, "spriteram")
	18	{ }
17	19
18		/* memory pointers */
19		required_shared_ptr<UINT8> m_spriteram;
20
21		/* video-related */
22		UINT8      m_vreg[8];
23		int        m_bg_pos;
24		int        m_bg_ctrl;
25
26		/* misc */
27		int        m_palette_selected;
28
29		/* devices */
	20	/* devices/memory pointers */
30	21	required_device<cpu_device> m_maincpu;
	22	required_device<cpu_device> m_audiocpu;
31	23	required_device<gfxdecode_device> m_gfxdecode;
32	24	required_device<screen_device> m_screen;
33	25	required_device<palette_device> m_palette;
	26	required_shared_ptr<UINT8> m_spriteram;
34	27
35		DECLARE_READ8_MEMBER(skyfox_vregs_r);
	28	int m_bg_pos;
	29	int m_bg_ctrl;
	30
36	31	DECLARE_WRITE8_MEMBER(skyfox_vregs_w);
37	32	DECLARE_INPUT_CHANGED_MEMBER(coin_inserted);
38	33	DECLARE_DRIVER_INIT(skyfox);

trunk/src/mame/video/skyfox.c

r32068	r32069
41	41
42	42	/***************************************************************************
43	43
44		Memory Handlers
45
46		***************************************************************************/
47
48		#ifdef UNUSED_FUNCTION
49		READ8_MEMBER(skyfox_state::skyfox_vregs_r)// for debug
50		{
51		return m_vreg[offset];
52		}
53		#endif
54
55		WRITE8_MEMBER(skyfox_state::skyfox_vregs_w)
56		{
57		m_vreg[offset] = data;
58
59		switch (offset)
60		{
61		case 0: m_bg_ctrl = data;   break;
62		case 1: soundlatch_byte_w(space, 0, data);  break;
63		case 2: break;
64		case 3: break;
65		case 4: break;
66		case 5: break;
67		case 6: break;
68		case 7: break;
69		}
70		}
71
72
73
74		/***************************************************************************
75
76	44	Convert the color PROMs into a more useable format.
77	45
78	46	There are three 256x4 palette PROMs (one per gun).
r32068	r32069
89	57	PALETTE_INIT_MEMBER(skyfox_state, skyfox)
90	58	{
91	59	const UINT8 *color_prom = memregion("proms")->base();
92		int i;
93	60
94		for (i = 0; i < 256; i++)
	61	for (int i = 0; i < 256; i++)
95	62	{
96	63	int bit0, bit1, bit2, bit3, r, g, b;
97	64
r32068	r32069
117	84	palette.set_pen_color(i, rgb_t(r, g, b));
118	85	}
119	86
120		/* Grey scale for the background??? */
121		for (i = 0; i < 256; i++)
	87	/* Grey scale for the background??? is wrong */
	88	for (int i = 0; i < 256; i++)
122	89	{
123	90	palette.set_pen_color(i + 256, rgb_t(i, i, i));
124	91	}
r32068	r32069
159	126
160	127	void skyfox_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect )
161	128	{
162		int offs;
163
	129	gfx_element *gfx = m_gfxdecode->gfx(0);
164	130	int width = m_screen->width();
165	131	int height = m_screen->height();
166	132
167	133	/* The 32x32 tiles in the 80-ff range are bankswitched */
168		int shift =(m_bg_ctrl & 0x80) ? (4 - 1) : 4;
	134	int shift = (m_bg_ctrl & 0x80) ? (4 - 1) : 4;
169	135
170		for (offs = 0; offs < m_spriteram.bytes(); offs += 4)
	136	for (int offs = 0; offs < m_spriteram.bytes(); offs += 4)
171	137	{
172	138	int xstart, ystart, xend, yend;
173	139	int xinc, yinc, dx, dy;
174	140	int low_code, high_code, n;
175	141
176		int y = m_spriteram[offs + 0];
177		int x = m_spriteram[offs + 1];
178		int code = m_spriteram[offs + 2] + m_spriteram[offs + 3] * 256;
	142	int code = m_spriteram[offs + 3] << 8 | m_spriteram[offs + 2];
179	143	int flipx = code & 0x2;
180	144	int flipy = code & 0x4;
	145	int y = m_spriteram[offs + 0];
	146	int x = m_spriteram[offs + 1] << 1 | (code & 1);
181	147
182		x = x * 2 + (code & 1); // add the least significant bit
183
184	148	high_code = ((code >> 4) & 0x7f0) + ((code & 0x8000) >> shift);
185	149
186		switch( code & 0x88 )
	150	switch (code & 0x88)
187	151	{
188		case 0x88:  n = 4; low_code = 0;                                        break;
189		case 0x08:  n = 2; low_code = ((code & 0x20) ? 8 : 0) + ((code & 0x10) ? 2 : 0);    break;
190		default:    n = 1; low_code = (code >> 4) & 0xf;
	152	case 0x88:  n = 4; low_code = 0; break;
	153	case 0x08:  n = 2; low_code = (code & 0x20) >> 2 | (code & 0x10) >> 3; break;
	154	default:    n = 1; low_code = (code >> 4) & 0xf; break;
191	155	}
192	156
193		#define DRAW_SPRITE(DX,DY,CODE) \
194		m_gfxdecode->gfx(0)->transpen(bitmap,\
195		cliprect, \
196		(CODE), \
197		0, \
198		flipx,flipy, \
199		x + (DX),y + (DY), 0xff);
200		if (m_bg_ctrl & 1)   // flipscreen
	157	if (m_bg_ctrl & 1) // flipscreen
201	158	{
202	159	x = width  - x - (n - 1) * 8;
203	160	y = height - y - (n - 1) * 8;
r32068	r32069
217	174	for (dy = ystart; dy != yend; dy += yinc)
218	175	{
219	176	for (dx = xstart; dx != xend; dx += xinc)
220		DRAW_SPRITE(dx * 8, dy * 8, code++);
	177	{
	178	gfx->transpen(bitmap, cliprect, code, 0, flipx, flipy, dx*8 + x, dy*8 + y, 0xff);
	179	code++;
	180	}
221	181
222		if (n == 2) code += 2;
	182	if (n == 2)
	183	code += 2;
223	184	}
224	185	}
225	186	}
226	187
227	188
228	189
229
230
231	190	/***************************************************************************
232	191
233	192	Background Rendering
r32068	r32069
236	195
237	196	void skyfox_state::draw_background(bitmap_ind16 &bitmap, const rectangle &cliprect)
238	197	{
239		UINT8 *RAM = memregion("gfx2")->base();
240		int x, y, i;
	198	UINT8 *rom = memregion("gfx2")->base();
241	199
242	200	/* The foreground stars (sprites) move at twice this speed when
243		the bg scroll rate [e.g. (skyfox_bg_reg >> 1) & 7] is 4 */
	201	the bg scroll rate [e.g. (m_bg_ctrl >> 1) & 7] is 4 */
244	202	int pos = (m_bg_pos >> 4) & (512 * 2 - 1);
245	203
246		for (i = 0 ; i < 0x1000; i++)
	204	for (int i = 0; i < 0x1000; i++)
247	205	{
248		int pen, offs, j;
	206	int offs = (i * 2 + ((m_bg_ctrl >> 4) & 0x3) * 0x2000) % 0x8000;
249	207
250		offs    = (i * 2 + ((m_bg_ctrl >> 4) & 0x3) * 0x2000) % 0x8000;
	208	int pen = rom[offs];
	209	int x = rom[offs + 1] * 2 + (i & 1) + pos + ((i & 8) ? 512 : 0);
	210	int y = ((i / 8) / 2) * 8 + (i % 8);
251	211
252		pen = RAM[offs];
253		x = RAM[offs + 1] * 2 + (i & 1) + pos + ((i & 8) ? 512 : 0);
254		y = ((i / 8) / 2) * 8 + (i % 8);
255
256		if (m_bg_ctrl & 1)   // flipscreen
	212	if (m_bg_ctrl & 1) // flipscreen
257	213	{
258	214	x = 512 * 2 - (x % (512 * 2));
259	215	y = 256     - (y % 256);
260	216	}
261	217
262		for (j = 0 ; j <= ((pen & 0x80) ? 0 : 3); j++)
263		bitmap.pix16(
264		(((j / 2) & 1) + y) % 256,
265		((j & 1)     + x) % 512) = 256 + (pen & 0x7f);
	218	for (int j = 0; j <= ((pen & 0x80) ? 0 : 3); j++)
	219	bitmap.pix16((((j / 2) & 1) + y) % 256, ((j & 1) + x) % 512) = 256 + (pen & 0x7f);
266	220	}
267	221	}
268	222
269	223
270	224	/***************************************************************************
271	225
272
273	226	Screen Drawing
274	227
275
276	228	***************************************************************************/
277	229
278
279	230	UINT32 skyfox_state::screen_update_skyfox(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
280	231	{
281	232	bitmap.fill(255, cliprect); // the bg is black

trunk/src/mame/drivers/skyfox.c

r32068	r32069
16	16	Verified Dip locations and recommended settings with manual
17	17
18	18	***************************************************************************/
	19
19	20	#include "emu.h"
20	21	#include "cpu/z80/z80.h"
21	22	#include "sound/2203intf.h"
r32068	r32069
24	25
25	26	/***************************************************************************
26	27
27
28	28	Main CPU
29	29
30
31	30	***************************************************************************/
32	31
	32	WRITE8_MEMBER(skyfox_state::skyfox_vregs_w)
	33	{
	34	switch (offset)
	35	{
	36	case 0:
	37	m_bg_ctrl = data;
	38	break;
33	39
34		/***************************************************************************
35		Sky Fox
36		***************************************************************************/
	40	case 1:
	41	soundlatch_byte_w(space, 0, data);
	42	break;
37	43
	44	default:
	45	break;
	46	}
	47	}
	48
38	49	static ADDRESS_MAP_START( skyfox_map, AS_PROGRAM, 8, skyfox_state )
39		AM_RANGE(0x0000, 0xbfff) AM_ROM                         // ROM
40		AM_RANGE(0xc000, 0xcfff) AM_RAM                         // RAM
41		AM_RANGE(0xd000, 0xd3ff) AM_RAM AM_SHARE("spriteram")   // Sprites
42		AM_RANGE(0xd400, 0xdfff) AM_RAM                         // RAM?
43		AM_RANGE(0xe000, 0xe000) AM_READ_PORT("INPUTS")         // Input Ports
44		AM_RANGE(0xe001, 0xe001) AM_READ_PORT("DSW0")           //
45		AM_RANGE(0xe002, 0xe002) AM_READ_PORT("DSW1")           //
46		AM_RANGE(0xe008, 0xe00f) AM_WRITE(skyfox_vregs_w)       // Video Regs
47		AM_RANGE(0xf001, 0xf001) AM_READ_PORT("DSW2")           //
48		//  AM_RANGE(0xff00, 0xff07) AM_READ(skyfox_vregs_r)        // fake to read the vregs
	50	AM_RANGE(0x0000, 0xbfff) AM_ROM
	51	AM_RANGE(0xc000, 0xcfff) AM_RAM
	52	AM_RANGE(0xd000, 0xd3ff) AM_RAM AM_SHARE("spriteram")
	53	AM_RANGE(0xd400, 0xdfff) AM_RAM // ?
	54	AM_RANGE(0xe000, 0xe000) AM_READ_PORT("INPUTS")
	55	AM_RANGE(0xe001, 0xe001) AM_READ_PORT("DSW0")
	56	AM_RANGE(0xe002, 0xe002) AM_READ_PORT("DSW1")
	57	AM_RANGE(0xe008, 0xe00f) AM_WRITE(skyfox_vregs_w)
	58	AM_RANGE(0xf001, 0xf001) AM_READ_PORT("DSW2")
49	59	ADDRESS_MAP_END
50	60
51	61
52	62	/***************************************************************************
53	63
54
55	64	Sound CPU
56	65
57
58	66	***************************************************************************/
59	67
60
61		/***************************************************************************
62		Sky Fox
63		***************************************************************************/
64
65
66	68	static ADDRESS_MAP_START( skyfox_sound_map, AS_PROGRAM, 8, skyfox_state )
67		AM_RANGE(0x0000, 0x7fff) AM_ROM                             // ROM
68		AM_RANGE(0x8000, 0x87ff) AM_RAM                             // RAM
69		//  AM_RANGE(0x9000, 0x9001) AM_WRITENOP                        // ??
70		AM_RANGE(0xa000, 0xa001) AM_DEVREADWRITE("ym1", ym2203_device, read, write) // YM2203 #1
71		//  AM_RANGE(0xb000, 0xb001) AM_WRITENOP                        // ??
72		AM_RANGE(0xc000, 0xc001) AM_DEVREADWRITE("ym2", ym2203_device, read, write) // YM2203 #2
73		AM_RANGE(0xb000, 0xb000) AM_READ(soundlatch_byte_r)             // From Main CPU
	69	AM_RANGE(0x0000, 0x7fff) AM_ROM
	70	AM_RANGE(0x8000, 0x87ff) AM_RAM
	71	//  AM_RANGE(0x9000, 0x9001) AM_WRITENOP // ??
	72	AM_RANGE(0xa000, 0xa001) AM_DEVREADWRITE("ym1", ym2203_device, read, write)
	73	//  AM_RANGE(0xb000, 0xb001) AM_WRITENOP // ??
	74	AM_RANGE(0xc000, 0xc001) AM_DEVREADWRITE("ym2", ym2203_device, read, write)
	75	AM_RANGE(0xb000, 0xb000) AM_READ(soundlatch_byte_r)
74	76	ADDRESS_MAP_END
75	77
76	78
77	79	/***************************************************************************
78	80
79
80	81	Input Ports
81	82
82
83	83	***************************************************************************/
84	84
85	85	INPUT_CHANGED_MEMBER(skyfox_state::coin_inserted)
r32068	r32069
147	147	PORT_DIPSETTING(    0x02, "3" )
148	148	PORT_DIPSETTING(    0x03, "4" )
149	149	PORT_DIPSETTING(    0x04, "5" )
150		//  PORT_DIPSETTING(    0x05, "5" )
151		//  PORT_DIPSETTING(    0x06, "5" )
	150	PORT_DIPSETTING(    0x05, "5" ) // dupe
	151	PORT_DIPSETTING(    0x06, "5" ) // dupe
152	152	PORT_DIPSETTING(    0x07, "Infinite (Cheat)")
153	153	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
154	154	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
r32068	r32069
166	166
167	167	/***************************************************************************
168	168
169
170	169	Graphics Layouts
171	170
172
173	171	***************************************************************************/
174	172
175	173	/* 8x8x8 tiles (note that the tiles in the ROMs are 32x32x8, but
r32068	r32069
187	185	8*8*8
188	186	};
189	187
190		/***************************************************************************
191		Sky Fox
192		***************************************************************************/
193
194	188	static GFXDECODE_START( skyfox )
195		GFXDECODE_ENTRY( "gfx1", 0, layout_8x8x8,   0, 1 ) // [0] Sprites
	189	GFXDECODE_ENTRY( "gfx1", 0, layout_8x8x8, 0, 1 ) // [0] Sprites
196	190	GFXDECODE_END
197	191
198	192
199	193	/***************************************************************************
200	194
201
202	195	Machine Drivers
203	196
204
205	197	***************************************************************************/
206	198
207
208		/***************************************************************************
209		Sky Fox
210		***************************************************************************/
211
212	199	/* Scroll the background on every vblank (guess). */
213	200
214	201	INTERRUPT_GEN_MEMBER(skyfox_state::skyfox_interrupt)
r32068	r32069
234	221	/* basic machine hardware */
235	222	MCFG_CPU_ADD("maincpu", Z80, XTAL_8MHz/2) /* Verified at 4MHz */
236	223	MCFG_CPU_PROGRAM_MAP(skyfox_map)
237		MCFG_CPU_VBLANK_INT_DRIVER("screen", skyfox_state, skyfox_interrupt)       /* NMI caused by coin insertion */
	224	MCFG_CPU_VBLANK_INT_DRIVER("screen", skyfox_state, skyfox_interrupt)
238	225
239	226	MCFG_CPU_ADD("audiocpu", Z80, XTAL_14_31818MHz/8) /* Verified at 1.789772MHz */
240	227	MCFG_CPU_PROGRAM_MAP(skyfox_sound_map)
241	228
242
243	229	/* video hardware */
244	230	MCFG_SCREEN_ADD("screen", RASTER)
245	231	MCFG_SCREEN_REFRESH_RATE(62.65)
246		MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)   // we're using PORT_VBLANK
	232	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
247	233	MCFG_SCREEN_SIZE(512, 256)
248		MCFG_SCREEN_VISIBLE_AREA(0+0x60, 320-1+0x60, 0+16, 256-1-16)    // from $30*2 to $CC*2+8
	234	MCFG_SCREEN_VISIBLE_AREA(0+0x60, 320-1+0x60, 0+16, 256-1-16) // from $30*2 to $CC*2+8
249	235	MCFG_SCREEN_UPDATE_DRIVER(skyfox_state, screen_update_skyfox)
250	236	MCFG_SCREEN_PALETTE("palette")
251	237
252	238	MCFG_GFXDECODE_ADD("gfxdecode", "palette", skyfox)
253		MCFG_PALETTE_ADD("palette", 256+256)    /* 256 static colors (+256 for the background??) */
	239	MCFG_PALETTE_ADD("palette", 256+256) /* 256 static colors (+256 for the background??) */
254	240	MCFG_PALETTE_INIT_OWNER(skyfox_state, skyfox)
255	241
256	242	/* sound hardware */
r32068	r32069
265	251
266	252
267	253
268
269
270
271	254	/***************************************************************************
272	255
273
274	256	ROMs Loading
275	257
	258	****************************************************************************
276	259
277		***************************************************************************/
278
279
280
281		/***************************************************************************
282
283	260	Sky Fox
284	261
285	262
r32068	r32069
287	264	c044-5  :   Score (BCD)
288	265	c048-9  :   Power (BCD)
289	266
290		***************************************************************************/
	267	****************************************************************************
291	268
292		/***************************************************************************
293
294	269	Exerizer [Bootleg]
295	270
296	271	malcor
r32068	r32069
417	392	ROM_END
418	393
419	394
420
421
422	395	/* Untangle the graphics: cut each 32x32x8 tile in 16 8x8x8 tiles */
423	396	DRIVER_INIT_MEMBER(skyfox_state,skyfox)
424	397	{
425		UINT8 *RAM = memregion("gfx1")->base();
426		UINT8 *end = RAM + memregion("gfx1")->bytes();
	398	UINT8 *rom = memregion("gfx1")->base();
	399	UINT8 *end = rom + memregion("gfx1")->bytes();
427	400	UINT8 buf[32 * 32];
428	401
429		while (RAM < end)
	402	while (rom < end)
430	403	{
431		int i;
432		for (i = 0; i < (32 * 32); i++)
433		buf[i] = RAM[(i % 8) + ((i / 8) % 8) * 32 + ((i / 64) % 4) * 8 + (i / 256) * 256];
	404	for (int i = 0; i < (32 * 32); i++)
	405	buf[i] = rom[(i % 8) + ((i / 8) % 8) * 32 + ((i / 64) % 4) * 8 + (i / 256) * 256];
434	406
435		memcpy(RAM, buf, 32 * 32);
436		RAM += 32 * 32;
	407	memcpy(rom, buf, 32 * 32);
	408	rom += 32 * 32;
437	409	}
438	410	}
439	411
440	412
441
442		GAME( 1987, skyfox,    0,      skyfox, skyfox, skyfox_state, skyfox, ROT90, "Jaleco (Nichibutsu USA license)", "Sky Fox" , GAME_SUPPORTS_SAVE )
	413	GAME( 1987, skyfox,    0,      skyfox, skyfox, skyfox_state, skyfox, ROT90, "Jaleco (Nichibutsu USA license)", "Sky Fox", GAME_SUPPORTS_SAVE )
443	414	GAME( 1987, exerizer,  skyfox, skyfox, skyfox, skyfox_state, skyfox, ROT90, "Jaleco", "Exerizer (Japan)", GAME_SUPPORTS_SAVE )
444		GAME( 1987, exerizerb, skyfox, skyfox, skyfox, skyfox_state, skyfox, ROT90, "bootleg", "Exerizer (Japan) (bootleg)", GAME_SUPPORTS_SAVE )
	415	GAME( 1987, exerizerb, skyfox, skyfox, skyfox, skyfox_state, skyfox, ROT90, "bootleg", "Exerizer (bootleg)", GAME_SUPPORTS_SAVE )

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