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
|
/* From VGAlib, changed for svgalib */
/* partially copyrighted (C) 1993 by Hartmut Schirmer */
#include <stdio.h>
#include <unistd.h> /* for usleep( long ) */
#include <string.h>
#include "vga.h"
static unsigned char line[2048 * 3];
static void testmode(int mode)
{
int xmax, ymax, i, yw, ys;
unsigned char buf[60];
vga_modeinfo *modeinfo;
vga_setmode(mode);
modeinfo = vga_getmodeinfo(mode);
printf("Width: %d Height: %d Colors: %d\n",
modeinfo->width,
modeinfo->height,
modeinfo->colors);
printf("DisplayStartRange: %xh Maxpixels: %d Blit: %s\n",
modeinfo->startaddressrange,
modeinfo->maxpixels,
modeinfo->haveblit ? "YES" : "NO");
vga_screenoff();
xmax = vga_getxdim() - 1;
ymax = vga_getydim() - 1;
vga_setcolor(vga_white());
vga_drawline(0, 0, xmax, 0);
vga_drawline(xmax, 0, xmax, ymax);
vga_drawline(xmax, ymax, 0, ymax);
vga_drawline(0, ymax, 0, 0);
for (i = 0; i <= 15; i++) {
vga_setegacolor(i);
vga_drawline(10 + i * 5, 10, 90 + i * 5, 90);
}
for (i = 0; i <= 15; i++) {
vga_setegacolor(i);
vga_drawline(90 + i * 5, 10, 10 + i * 5, 90);
}
vga_screenon();
ys = 100;
yw = (ymax - 100) / 4;
for (i = 0; i < xmax - 1; i++)
line[i] = (i + 2) % 16;
line[0] = line[xmax] = 15;
line[1] = line[xmax - 1] = 0;
for (i = 100; i < ymax - 1; i++)
vga_drawscanline(i, line);
if (getchar() == 'd')
vga_dumpregs();
vga_getcrtcregs(buf);
buf[0]=0x4d;
buf[1]=0x3f;
buf[2]=0x3f;
buf[3]=0x80;
buf[4]=0x41;
buf[5]=0x10;
vga_setcrtcregs(buf);
for(i=0;i<20;i++) {
vga_setdisplaystart(i);
usleep(200000);
vga_waitretrace();
}
vga_getch();
vga_setmode(TEXT);
}
int main(void)
{
int mode;
int i, high;
vga_init(); /* Initialize. */
mode = 4;
if (mode == -1) {
printf("Choose one of the following video modes: \n");
high = 0;
for (i = 1; i <= vga_lastmodenumber(); i++)
if (vga_hasmode(i)) {
vga_modeinfo *info;
char expl[100];
char *cols = NULL;
*expl = '\0';
info = vga_getmodeinfo(i);
cols = "16";
strcpy(expl, "4 bitplanes");
high = i;
printf("%5d: %dx%d, ",
i, info->width, info->height);
if (cols == NULL)
printf("%d", info->colors);
else
printf("%s", cols);
printf(" colors ");
if (*expl != '\0')
printf("(%s)", expl);
printf("\n");
}
}
if (vga_hasmode(mode))
testmode(mode);
else {
printf("Error: Video mode not supported by driver\n");
exit(-1);
}
return 0;
}
|
