/* if frame tail not needed (incorrect number or received twice), it won't store, but CRC will be calculated  */
static int skip_tail(unsigned int, unsigned int, u32)
/* if frame tail not needed (incorrect number or received twice), it won't store, but CRC will be calculated  */
static int skip_tail(unsigned int, unsigned int, u32)
{
	while( tail_len-- )
		crc = CRC32( inb( ioaddr + DAT ), crc );
	return  crc == CRC32_REMAINDER;
}