--- libelwix/inc/elwix/acrc.h	2019/12/18 20:00:18	1.6.28.1
+++ libelwix/inc/elwix/acrc.h	2019/12/30 18:11:16	1.7
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: acrc.h,v 1.6.28.1 2019/12/18 20:00:18 misho Exp $
+* $Id: acrc.h,v 1.7 2019/12/30 18:11:16 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -83,13 +83,21 @@ unsigned int crcCalc(unsigned char * __restrict psBuf,
 		unsigned int initCRC, unsigned int xorCRC);
 
 /*
- * crc16() - Checksum in X/Y modem communication
+ * crc16() - Checksum calculation in X/Y modem communication
  *
  * @buf = Data for calculation
  * @bufLen = Length of data
  * return: Checksum
  */
 unsigned short crc16(unsigned char * __restrict buf, int bufLen);
+/*
+ * crc16_ext() - Checksum ver.2 calculation in X/Y modem communication
+ *
+ * @buf = Data for calculation
+ * @bufLen = Length of data
+ * return: Checksum
+ */
+unsigned short crc16_ext(unsigned char * __restrict buf, int bufLen);
 /*
  * crcIP() - Checksum in IP communication
  *