Felisp
84436a5ae0
http://my.svgalib.org/svgalib/svgalib-1.9.25.tar.gz http://my.svgalib.org/svgalib/
124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
|
|
/*
|
|
Simple test program for Cirrus linear addressing/color expansion.
|
|
vgagl can take advantage of it (linear addressing).
|
|
*/
|
|
|
|
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <vga.h>
|
|
#include <time.h>
|
|
#include "../src/libvga.h"
|
|
|
|
|
|
#define USE_LINEAR_ADDRESSING
|
|
/* #define USE_BY16_ADDRESSING */
|
|
|
|
|
|
unsigned char *vbuf;
|
|
|
|
#if 0
|
|
/* This function is Cirrus specific and has nothing to do with linear
|
|
* addressing. */
|
|
void by8test(void)
|
|
{
|
|
int i;
|
|
int startclock, diffclock;
|
|
|
|
/* Enable extended write modes and BY8/16 addressing. */
|
|
outb(0x3ce, 0x0b);
|
|
|
|
#ifdef USE_BY16_ADDRESSING
|
|
outb(0x3cf, inb(0x3cf) | 0x16);
|
|
#else
|
|
outb(0x3cf, inb(0x3cf) | 0x06);
|
|
#endif
|
|
/* Set extended write mode 4. */
|
|
outb(0x3ce, 0x05);
|
|
outb(0x3cf, (inb(0x3cf) & 0xf8) | 4);
|
|
|
|
/* Set pixel mask register (coincides with VGA plane mask register). */
|
|
outw(0x3c4, 0xff02);
|
|
|
|
startclock = clock();
|
|
for (i = 0; i < 248; i++) {
|
|
outw(0x3ce, 0x01 + (i << 8)); /* Set foreground color. */
|
|
#ifdef USE_BY16_ADDRESSING
|
|
outw(0x3ce, 0x11 + (i << 8)); /* Set high byte. */
|
|
memset(vbuf, 0xff, 640 * 480 / 16);
|
|
#else
|
|
memset(vbuf, 0xff, 640 * 480 / 8);
|
|
#endif
|
|
}
|
|
diffclock = clock() - startclock;
|
|
printf("Color expansion framebuffer fill speed: %dK/s\n",
|
|
640 * 480 * 248 / diffclock / 10);
|
|
}
|
|
#endif
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int i,j;
|
|
|
|
if (!(argc == 2 && strcmp(argv[1], "--force") == 0))
|
|
if (!(vga_getmodeinfo(vga_getdefaultmode())->flags & CAPABLE_LINEAR)) {
|
|
printf("Linear addressing not supported for this chipset.\n");
|
|
exit(1);
|
|
}
|
|
vga_init();
|
|
vga_setmode(vga_getdefaultmode());
|
|
vga_setpage(0);
|
|
#ifdef USE_LINEAR_ADDRESSING
|
|
if (vga_setlinearaddressing() == -1) {
|
|
vga_setmode(TEXT);
|
|
printf("Could not set linear addressing.\n");
|
|
exit(-1);
|
|
}
|
|
#endif
|
|
|
|
/* Should not mess with bank register after this. */
|
|
|
|
vbuf = vga_getgraphmem();
|
|
printf("vbuf mapped at %08lx.\n", (unsigned long) vbuf);
|
|
|
|
getchar();
|
|
|
|
#ifdef USE_LINEAR_ADDRESSING
|
|
memset(vbuf, 0x88, 640 * 480);
|
|
sleep(1);
|
|
|
|
memset(vbuf, 0, 640 * 480);
|
|
for (i = 0; i < 100000; i++)
|
|
*(vbuf + (rand() & 0xfffff)) = rand();
|
|
#endif
|
|
|
|
#if 0
|
|
if (vga_getcurrentchipset() == CIRRUS)
|
|
/* Show the bandwidth of the extended write modes of the */
|
|
/* Cirrus chip. */
|
|
by8test();
|
|
#endif
|
|
|
|
getchar();
|
|
for(i = 0;i < 44;i++){
|
|
*(vbuf + i) = 0x1c;
|
|
*(vbuf + 640*17 + i) = 0x1c;
|
|
*(vbuf + 640*480 - i) = 0x1c;
|
|
*(vbuf + 640*480 - 1 - 640*17 - i) = 0x1c;
|
|
for(j = 1;j < 17;j++){
|
|
*(vbuf + 640*j + i) = (i == 0 || i == 43)? 0x1c:0;
|
|
*(vbuf + 640*480 - 1 - 640*j - i) = (i == 0 || i == 43)? 0x1c:0;
|
|
}
|
|
}
|
|
for(i = 3;i < 10;i++)
|
|
for(j = 4;j < 10;j++){
|
|
*(vbuf + i + 640*j) = 0x3f;
|
|
*(vbuf + 640*480 -1 -640*j - i) = 0x3f;
|
|
}
|
|
getchar();
|
|
vga_setmode(TEXT);
|
|
return 0;
|
|
}
|