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