bmp_SetPix
bmp_SetPix(info, x, y, *(info->index+1) & 0x0f);
bmp_SetPix(info, x, y, (*(info->index+1) >>4) & 0x0f);
bmp_SetPix(info, x, y, val);
bmp_SetPix(info, x, y, *(info->index+1));
bmp_SetPix(info, x, y, *(info->index + 2 + count));
bmp_SetPix(info, x, line, *info->index);
bmp_SetPix(info, x, line, val);
bmp_SetPix(info, x, line, val);