2014-12-29[1.6A]
 	1. Apply new CPU version
	2. Add a function code of Modbus/TCP(FC43/14)
	3. Fix bugs about HTTP and DHCP
	4. Improve HTTP function
	5. Improve RFC2217 function
	6. Support separator function in UDP mode

2013-08-14   [1.5A]
 	1. support CIE-H14
	2. support HTTP pulse tag
	3. support initialize output according to modbus session close
	4. support e-mail notification (CIE-H12/H14 Only)
	5. support frame delimiter
	6. improve HTTP performance (dynamic TCP send window queue)
	7. add AT+PLS(link status) command in AT command mode
	8. fix minor bugs

2011-07-27   [1.4B]
 	1. support CIE-H12
	2. decrease tcp segment under winq_size/2 to avoid late ACK from windows
	3. support multi-connection(max 8) modbus net
	4. add AT+PPNG(ping test) command
	5. telnet No Operation command bug fix
	6. UDP zero checksum bug fix
	7. PPPoE align bug fix
	8. support Modbus/TCP class 1(code 1, 2, 4, 5, 6 and 7)
	9. support Modbus/TCP class 2(code 15)
	10. support Modbus/TCP a new function (code 105)
	11. add modbus exception code 6 | slave device busy
	12. sio | zero FIFO size bug fix
	13. multiple input change notification bug fix
	14. add mac address and DDNS state fields to ezManager status
	15. ATC ESC character bug fix
	16. TCP fast retransmit bug fix
	17. SCFG corrupted frame bug fix
	18. invalid modbus header length bug fix
	19. rcvd modbus data loss bug fix
	20. support http 403 reply for macro & pulse
	21. support macro mode for each port
	22. U2S water mark bug fix
	23. telnet password mismatch bug fix
	24. add option for disable FIFO
	25. decrease queue sizes
		> HTTP(1460->512), Mbus(768->384), sio0(6144->4096), tty(2048->1024)
	26. decrease sio buffer to 2048 from 4096 to avoid out of memory
	27. increase max http session 4 -> 8
	28. change modbus addressing from byte to word
	29. increase arp table size 4 -> 16
	30. ATC invalid command parameter bug fix
	31. SCFG invalid command parameter bug fix
	32. prevent to enter SCFG mode with no uart env
	33. HTML corrupted binary bug fix

2009-08-31   [1.3E]
 	1. 401 reply string bug fix

2009-07-10   [1.3D]
 	1. sio0 PDC_tx on DSR bug fix
	2. http flushing peer bug fix
	3. add lsh sc(session control) command
	4. limit tcp mss to MIN(TCP_LOCAL_MSS, ppp_send_mru, ppp_recv_mru)
	5. add arp table field to ezManager status
	6. DNS peer_ip (ATC mode) bug fix
	7. add AT+PSE(send escape) command
	8. mac_id support
	9. disable HTTP/Modbus output update if macro is enabled

2009-06-11   [1.3C]
	1. http winq overflow bug fix
	2. add 'struct tcp' arg inside tcp->notify_sent/rcvd paramenter
	3. M10/H10 product message bug fix

2009-05-21   [1.3B]
	1. Modbus read multiple regs byte ordering bug fix.
	2. 'brace in string' bug fix.

2009-04-24   [1.3A]
	1. webpage script support
	2. dynamic TCP session management support
	3. modified - tcp.c winq.c tty.c iptrap.c lsh.c scfg.c init.c
	4. add 'length field' to env write len

2008-07-30   [1.2C]
	1. IP Change Trap - UDP bug fix
	2. sio mark/space support
	3. duplicate local port bug fix

2008-06-10   [1.2B]
	1. modify ddns update period

2008-05-30   [1.2A]
	1. dynamic memory management support
	2. disable UDP dest_ip comparison when ezl_local_ip is zero
	3. TCP MSS bug fix
	4. U2S net_tx, net_rx update bug fix
	5. add icmp frag needed message processing routine
	6. add IO comment facility over http

2008-02-05   [1.1F]
	1. tcp urg pointer bug fix
	2. dhcpc sends broadcast if server is not in subnet

2008-01-14   [1.1E]
	1. ip_trap(DDNS/TCP/UDP) support
	2. dynamic IP telnet support
	3. lsh series command bug fix
	4. add arp refresh code in lookup.c iptrap.c u2s.c
	5. add http port number field

2007-11-16   [1.1D]
	1. add CTS & PDC_PTSR monitoring loop
	2. is_ip_broadcast() 0xe0 comparison bug fix
	3. is_ip_broadcast() broadcast detection bug fix

2007-09-12   [1.1C]
	1. Dynamic DNS(DDNS) support
	2. DNS stat->end comparison bug fix
	3. PPP down bug fix

2007-08-29   [1.1B]
	1. telnet com port control option support
	2. reply none zero length keep-alive
	3. reset processor after ezcfg write

2007-08-23   [1.1A]
	1. seq_gap bug fix
	2. emac TBQP bug fix
	3. disable H/W flow-control
	4. RTS vibration bug fix
	5.intr pending bug fix by setting AIC protect mode
	6. receive time-out frame loss bug fix
	7. PDC start_tx atomic bug fix
	8. infinite PDC tx intr bug fix

2007-07-06   [1.0B]
	1. Infinite RST bug fix
	2. Stopbit bug fix

2006-04-12   [1.0A]
	1. Initial touch.