- if(shift) {
- r >>= shift;
- g >>= shift;
- b >>= shift;
- }
-
- outp(VGA_DAC_DATA, r);
- outp(VGA_DAC_DATA, g);
- outp(VGA_DAC_DATA, b);
- }
-}
-
-static unsigned int get_mask(int sz, int pos)
-{
- unsigned int i, mask = 0;
-
- for(i=0; i<sz; i++) {
- mask |= 1 << i;
- }
- return mask << pos;
-}
-
-void print_mode_info(FILE *fp, struct vbe_mode_info *mi)
-{
- fprintf(fp, "resolution: %dx%d\n", mi->xres, mi->yres);
- fprintf(fp, "color depth: %d\n", mi->bpp);
- fprintf(fp, "mode attributes: %x\n", mi->mode_attr);
- fprintf(fp, "bytes per scanline: %d\n", mi->scanline_bytes);
- fprintf(fp, "number of planes: %d\n", (int)mi->num_planes);
- fprintf(fp, "number of banks: %d\n", (int)mi->num_banks);
- fprintf(fp, "mem model: %d\n", (int)mi->mem_model);
- fprintf(fp, "red bits: %d (mask: %x)\n", (int)mi->rmask_size, get_mask(mi->rmask_size, mi->rpos));
- fprintf(fp, "green bits: %d (mask: %x)\n", (int)mi->gmask_size, get_mask(mi->gmask_size, mi->gpos));
- fprintf(fp, "blue bits: %d (mask: %x)\n", (int)mi->bmask_size, get_mask(mi->bmask_size, mi->bpos));
- fprintf(fp, "framebuffer address: %x\n", (unsigned int)mi->fb_addr);