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