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
|
#include "emu.h"
#include "includes/xyonix.h"
PALETTE_INIT( xyonix )
{
int i;
for (i = 0;i < machine.total_colors();i++)
{
int bit0,bit1,bit2,r,g,b;
/* red component */
bit0 = (color_prom[i] >> 0) & 0x01;
bit1 = (color_prom[i] >> 1) & 0x01;
bit2 = (color_prom[i] >> 2) & 0x01;
r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
/* green component */
bit0 = (color_prom[i] >> 5) & 0x01;
bit1 = (color_prom[i] >> 6) & 0x01;
bit2 = (color_prom[i] >> 7) & 0x01;
g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
/* blue component */
bit0 = (color_prom[i] >> 3) & 0x01;
bit1 = (color_prom[i] >> 4) & 0x01;
b = 0x4f * bit0 + 0xa8 * bit1;
palette_set_color(machine,i,MAKE_RGB(r,g,b));
}
}
static TILE_GET_INFO( get_xyonix_tile_info )
{
xyonix_state *state = machine.driver_data<xyonix_state>();
int tileno;
int attr = state->m_vidram[tile_index+0x1000+1];
tileno = (state->m_vidram[tile_index+1] << 0) | ((attr & 0x0f) << 8);
SET_TILE_INFO(0,tileno,attr >> 4,0);
}
WRITE8_HANDLER( xyonix_vidram_w )
{
xyonix_state *state = space->machine().driver_data<xyonix_state>();
state->m_vidram[offset] = data;
tilemap_mark_tile_dirty(state->m_tilemap,(offset-1)&0x0fff);
}
VIDEO_START(xyonix)
{
xyonix_state *state = machine.driver_data<xyonix_state>();
state->m_tilemap = tilemap_create(machine, get_xyonix_tile_info, tilemap_scan_rows, 4, 8, 80, 32);
}
SCREEN_UPDATE(xyonix)
{
xyonix_state *state = screen->machine().driver_data<xyonix_state>();
tilemap_draw(bitmap, cliprect, state->m_tilemap, 0, 0);
return 0;
}
|