summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/video/hyhoo.c
blob: c0f22ba752a8e55eb5931285fc4fc6165de18470 (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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
/******************************************************************************

    Video Hardware for Nichibutsu Mahjong series.

    Driver by Takahiro Nogi <nogi@kt.rim.or.jp> 2000/01/28 -

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

#include "emu.h"
#include "includes/hyhoo.h"


WRITE8_MEMBER(hyhoo_state::hyhoo_blitter_w)
{
	switch (offset)
	{
		case 0x00:  m_blitter_src_addr = (m_blitter_src_addr & 0xff00) | data;
					m_nb1413m3->gfxradr_l_w(space, 0, data); break;
		case 0x01:  m_blitter_src_addr = (m_blitter_src_addr & 0x00ff) | (data << 8);
					m_nb1413m3->gfxradr_h_w(space, 0, data); break;
		case 0x02:  m_blitter_destx = data; break;
		case 0x03:  m_blitter_desty = data; break;
		case 0x04:  m_blitter_sizex = data; break;
		case 0x05:  m_blitter_sizey = data;
					/* writing here also starts the blit */
					hyhoo_gfxdraw();
					break;
		case 0x06:  m_blitter_direction_x = (data >> 0) & 0x01;
					m_blitter_direction_y = (data >> 1) & 0x01;
					m_flipscreen = (~data >> 2) & 0x01;
					m_dispflag = (~data >> 3) & 0x01;
					break;
		case 0x07:  break;
	}
}


WRITE8_MEMBER(hyhoo_state::hyhoo_romsel_w)
{
	int gfxlen = memregion("gfx1")->bytes();
	m_gfxrom = (((data & 0xc0) >> 4) + (data & 0x03));
	m_highcolorflag = data;
	m_nb1413m3->gfxrombank_w(space, 0, data);

	if ((0x20000 * m_gfxrom) > (gfxlen - 1))
	{
#ifdef MAME_DEBUG
		popmessage("GFXROM BANK OVER!!");
#endif
		m_gfxrom &= (gfxlen / 0x20000 - 1);
	}
}

void hyhoo_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
	switch (id)
	{
	case TIMER_BLITTER:
		m_nb1413m3->m_busyflag = 1;
		break;
	default:
		assert_always(FALSE, "Unknown id in hyhoo_state::device_timer");
	}
}

void hyhoo_state::hyhoo_gfxdraw()
{
	UINT8 *GFX = memregion("gfx1")->base();

	int x, y;
	int dx1, dx2, dy;
	int startx, starty;
	int sizex, sizey;
	int skipx, skipy;
	int ctrx, ctry;
	int gfxaddr, gfxlen;
	UINT8 color, color1, color2;
	int r, g, b;
	pen_t pen;

	m_nb1413m3->m_busyctr = 0;

	m_gfxrom |= ((m_nb1413m3->m_sndrombank1 & 0x02) << 3);

	startx = m_blitter_destx + m_blitter_sizex;
	starty = m_blitter_desty + m_blitter_sizey;

	if (m_blitter_direction_x)
	{
		sizex = m_blitter_sizex ^ 0xff;
		skipx = 1;
	}
	else
	{
		sizex = m_blitter_sizex;
		skipx = -1;
	}

	if (m_blitter_direction_y)
	{
		sizey = m_blitter_sizey ^ 0xff;
		skipy = 1;
	}
	else
	{
		sizey = m_blitter_sizey;
		skipy = -1;
	}

	gfxlen = memregion("gfx1")->bytes();
	gfxaddr = (m_gfxrom << 17) + (m_blitter_src_addr << 1);

	for (y = starty, ctry = sizey; ctry >= 0; y += skipy, ctry--)
	{
		for (x = startx, ctrx = sizex; ctrx >= 0; x += skipx, ctrx--)
		{
			if ((gfxaddr > (gfxlen - 1)))
			{
#ifdef MAME_DEBUG
				popmessage("GFXROM ADDRESS OVER!!");
#endif
				gfxaddr = 0;
			}

			color = GFX[gfxaddr++];

			dx1 = (2 * x + 0) & 0x1ff;
			dx2 = (2 * x + 1) & 0x1ff;
			dy = y & 0xff;

			if (m_highcolorflag & 0x04)
			{
				// direct mode

				if (color != 0xff)
				{
					if (m_highcolorflag & 0x20)
					{
						/* least significant bits */

						// src xxxxxxxx_bbbggrrr
						// dst xxbbbxxx_ggxxxrrr

						r = ((color & 0x07) >> 0) & 0x07;
						g = ((color & 0x18) >> 3) & 0x03;
						b = ((color & 0xe0) >> 5) & 0x07;

						pen = MAKE_RGB(pal6bit(r), pal5bit(g), pal5bit(b));

						m_tmpbitmap.pix32(dy, dx1) = m_tmpbitmap.pix32(dy, dx1) | pen;
						m_tmpbitmap.pix32(dy, dx2) = m_tmpbitmap.pix32(dy, dx2) | pen;
					}
					else
					{
						/* most significant bits */

						// src xxxxxxxx_bbgggrrr
						// dst bbxxxggg_xxrrrxxx

						r = ((color & 0x07) >> 0) & 0x07;
						g = ((color & 0x38) >> 3) & 0x07;
						b = ((color & 0xc0) >> 6) & 0x03;

						pen = MAKE_RGB(pal6bit(r << 3), pal5bit(g << 2), pal5bit(b << 3));

						m_tmpbitmap.pix32(dy, dx1) = pen;
						m_tmpbitmap.pix32(dy, dx2) = pen;
					}
				}
			}
			else
			{
				// lookup table mode

				if (m_blitter_direction_x)
				{
					// flip
					color1 = (color & 0x0f) >> 0;
					color2 = (color & 0xf0) >> 4;
				}
				else
				{
					// normal
					color1 = (color & 0xf0) >> 4;
					color2 = (color & 0x0f) >> 0;
				}

				if (m_clut[color1])
				{
					// src xxxxxxxx_bbgggrrr
					// dst bbxxxggg_xxrrrxxx

					r = ((~m_clut[color1] & 0x07) >> 0) & 0x07;
					g = ((~m_clut[color1] & 0x38) >> 3) & 0x07;
					b = ((~m_clut[color1] & 0xc0) >> 6) & 0x03;

					pen = MAKE_RGB(pal6bit(r << 3), pal5bit(g << 2), pal5bit(b << 3));

					m_tmpbitmap.pix32(dy, dx1) = pen;
				}

				if (m_clut[color2])
				{
					// src xxxxxxxx_bbgggrrr
					// dst bbxxxggg_xxrrrxxx

					r = ((~m_clut[color2] & 0x07) >> 0) & 0x07;
					g = ((~m_clut[color2] & 0x38) >> 3) & 0x07;
					b = ((~m_clut[color2] & 0xc0) >> 6) & 0x03;

					pen = MAKE_RGB(pal6bit(r << 3), pal5bit(g << 2), pal5bit(b << 3));

					m_tmpbitmap.pix32(dy, dx2) = pen;
				}
			}

			m_nb1413m3->m_busyctr++;
		}
	}

	m_nb1413m3->m_busyflag = 0;
	timer_set(attotime::from_hz(400000) * m_nb1413m3->m_busyctr, TIMER_BLITTER);
}


void hyhoo_state::video_start()
{
	m_screen->register_screen_bitmap(m_tmpbitmap);
}


UINT32 hyhoo_state::screen_update_hyhoo(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
	if (m_dispflag)
		copybitmap(bitmap, m_tmpbitmap, m_flipscreen, m_flipscreen, 0, 0, cliprect);
	else
		bitmap.fill(RGB_BLACK, cliprect);

	return 0;
}