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
|
// remaining gfx glitches
// layer priority register not fully understood
#include "driver.h"
#include "includes/drgnmst.h"
static TILE_GET_INFO( get_drgnmst_fg_tile_info )
{
drgnmst_state *state = (drgnmst_state *)machine->driver_data;
int tileno, colour, flipyx;
tileno = state->fg_videoram[tile_index * 2] & 0xfff;
colour = state->fg_videoram[tile_index * 2 + 1] & 0x1f;
flipyx = (state->fg_videoram[tile_index * 2 + 1] & 0x60)>>5;
SET_TILE_INFO(1, tileno, colour, TILE_FLIPYX(flipyx));
}
WRITE16_HANDLER( drgnmst_fg_videoram_w )
{
drgnmst_state *state = (drgnmst_state *)space->machine->driver_data;
COMBINE_DATA(&state->fg_videoram[offset]);
tilemap_mark_tile_dirty(state->fg_tilemap, offset / 2);
}
static TILE_GET_INFO( get_drgnmst_bg_tile_info )
{
drgnmst_state *state = (drgnmst_state *)machine->driver_data;
int tileno, colour, flipyx;
tileno = (state->bg_videoram[tile_index * 2]& 0x1fff) + 0x800;
colour = state->bg_videoram[tile_index * 2 + 1] & 0x1f;
flipyx = (state->bg_videoram[tile_index * 2 + 1] & 0x60) >> 5;
SET_TILE_INFO(3, tileno, colour, TILE_FLIPYX(flipyx));
}
WRITE16_HANDLER( drgnmst_bg_videoram_w )
{
drgnmst_state *state = (drgnmst_state *)space->machine->driver_data;
COMBINE_DATA(&state->bg_videoram[offset]);
tilemap_mark_tile_dirty(state->bg_tilemap, offset / 2);
}
static TILE_GET_INFO( get_drgnmst_md_tile_info )
{
drgnmst_state *state = (drgnmst_state *)machine->driver_data;
int tileno, colour, flipyx;
tileno = (state->md_videoram[tile_index * 2] & 0x7fff) - 0x2000;
colour = state->md_videoram[tile_index * 2 + 1] & 0x1f;
flipyx = (state->md_videoram[tile_index * 2 + 1] & 0x60) >> 5;
SET_TILE_INFO(2, tileno, colour, TILE_FLIPYX(flipyx));
}
WRITE16_HANDLER( drgnmst_md_videoram_w )
{
drgnmst_state *state = (drgnmst_state *)space->machine->driver_data;
COMBINE_DATA(&state->md_videoram[offset]);
tilemap_mark_tile_dirty(state->md_tilemap, offset / 2);
}
static void draw_sprites( running_machine *machine, bitmap_t *bitmap,const rectangle *cliprect )
{
drgnmst_state *state = (drgnmst_state *)machine->driver_data;
const gfx_element *gfx = machine->gfx[0];
UINT16 *source = state->spriteram;
UINT16 *finish = source + 0x800 / 2;
while (source < finish)
{
int xpos, ypos, number, flipx, flipy, wide, high;
int x, y;
int incx, incy;
int colr;
number = source[2];
xpos = source[0];
ypos = source[1];
flipx = source[3] & 0x0020;
flipy = source[3] & 0x0040;
wide = (source[3] & 0x0f00) >> 8;
high = (source[3] & 0xf000) >> 12;
colr = (source[3] & 0x001f);
if ((source[3] & 0xff00) == 0xff00) break;
if (!flipx) { incx = 16;} else { incx = -16; xpos += 16 * wide; }
if (!flipy) { incy = 16;} else { incy = -16; ypos += 16 * high; }
for (y = 0; y <= high; y++)
{
for (x = 0; x <= wide; x++)
{
int realx, realy, realnumber;
realx = xpos + incx * x;
realy = ypos + incy * y;
realnumber = number + x + y * 16;
drawgfx_transpen(bitmap, cliprect, gfx, realnumber, colr, flipx, flipy, realx, realy, 15);
}
}
source += 4;
}
}
static TILEMAP_MAPPER( drgnmst_fg_tilemap_scan_cols )
{
return (col * 32) + (row & 0x1f) + ((row & 0xe0) >> 5) * 2048;
}
static TILEMAP_MAPPER( drgnmst_md_tilemap_scan_cols )
{
return (col * 16) + (row & 0x0f) + ((row & 0xf0) >> 4) * 1024;
}
static TILEMAP_MAPPER( drgnmst_bg_tilemap_scan_cols )
{
return (col * 8) + (row & 0x07) + ((row & 0xf8) >> 3) * 512;
}
VIDEO_START(drgnmst)
{
drgnmst_state *state = (drgnmst_state *)machine->driver_data;
state->fg_tilemap = tilemap_create(machine, get_drgnmst_fg_tile_info, drgnmst_fg_tilemap_scan_cols, 8, 8, 64,64);
tilemap_set_transparent_pen(state->fg_tilemap, 15);
state->md_tilemap = tilemap_create(machine, get_drgnmst_md_tile_info, drgnmst_md_tilemap_scan_cols, 16, 16, 64,64);
tilemap_set_transparent_pen(state->md_tilemap, 15);
state->bg_tilemap = tilemap_create(machine, get_drgnmst_bg_tile_info, drgnmst_bg_tilemap_scan_cols, 32, 32, 64,64);
tilemap_set_transparent_pen(state->bg_tilemap, 15);
// do the other tilemaps have rowscroll too? probably not ..
tilemap_set_scroll_rows(state->md_tilemap, 1024);
}
VIDEO_UPDATE(drgnmst)
{
drgnmst_state *state = (drgnmst_state *)screen->machine->driver_data;
int y, rowscroll_bank;
tilemap_set_scrollx(state->bg_tilemap, 0, state->vidregs[10] - 18); // verify
tilemap_set_scrolly(state->bg_tilemap, 0, state->vidregs[11]); // verify
// tilemap_set_scrollx(state->md_tilemap,0, state->vidregs[8] - 16); // rowscrolled
tilemap_set_scrolly(state->md_tilemap,0, state->vidregs[9]); // verify
tilemap_set_scrollx(state->fg_tilemap,0, state->vidregs[6] - 18); // verify (test mode colour test needs it)
tilemap_set_scrolly(state->fg_tilemap,0, state->vidregs[7]); // verify
rowscroll_bank = (state->vidregs[4] & 0x30) >> 4;
for (y = 0; y < 1024; y++)
tilemap_set_scrollx(state->md_tilemap, y, state->vidregs[8] - 16 + state->rowscrollram[y + 0x800 * rowscroll_bank]);
// todo: figure out which bits relate to the order
switch (state->vidregs2[0])
{
case 0x2451: // fg unsure
case 0x2d9a: // fg unsure
case 0x2440: // all ok
case 0x245a: // fg unsure, title screen
tilemap_draw(bitmap, cliprect, state->fg_tilemap, TILEMAP_DRAW_OPAQUE, 0);
tilemap_draw(bitmap, cliprect, state->md_tilemap, 0, 0);
tilemap_draw(bitmap, cliprect, state->bg_tilemap, 0, 0);
break;
case 0x23c0: // all ok
tilemap_draw(bitmap, cliprect, state->bg_tilemap, TILEMAP_DRAW_OPAQUE, 0);
tilemap_draw(bitmap, cliprect, state->fg_tilemap, 0, 0);
tilemap_draw(bitmap, cliprect, state->md_tilemap, 0, 0);
break;
case 0x38da: // fg unsure
case 0x215a: // fg unsure
case 0x2140: // all ok
tilemap_draw(bitmap, cliprect, state->fg_tilemap, TILEMAP_DRAW_OPAQUE, 0);
tilemap_draw(bitmap, cliprect, state->bg_tilemap, 0, 0);
tilemap_draw(bitmap, cliprect, state->md_tilemap, 0, 0);
break;
case 0x2d80: // all ok
tilemap_draw(bitmap, cliprect, state->md_tilemap, TILEMAP_DRAW_OPAQUE, 0);
tilemap_draw(bitmap, cliprect, state->bg_tilemap, 0, 0);
tilemap_draw(bitmap, cliprect, state->fg_tilemap, 0, 0);
break;
default:
tilemap_draw(bitmap, cliprect, state->bg_tilemap, TILEMAP_DRAW_OPAQUE, 0);
tilemap_draw(bitmap, cliprect, state->fg_tilemap, 0, 0);
tilemap_draw(bitmap, cliprect, state->md_tilemap, 0, 0);
logerror ("unknown video priority regs %04x\n", state->vidregs2[0]);
}
draw_sprites(screen->machine,bitmap,cliprect);
// popmessage ("x %04x x %04x x %04x x %04x x %04x", state->vidregs2[0], state->vidregs[12], state->vidregs[13], state->vidregs[14], state->vidregs[15]);
// popmessage ("x %04x x %04x y %04x y %04x z %04x z %04x",state->vidregs[0],state->vidregs[1],state->vidregs[2],state->vidregs[3],state->vidregs[4],state->vidregs[5]);
return 0;
}
|