HDLC_SYN
*cp++ = HDLC_SYN;
*cp++ = HDLC_SYN;
if ((async->mode & MODE_HUNT) && c != HDLC_SYN)
case HDLC_SYN:
|| (c == HDLC_ESC) || (c == HDLC_SYN)) {
hot = HDLC_SYN;