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Topic: XMODEM

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	Xmodem - Search Results - MSN Encarta
		XModem, in computer science, a file-transfer protocol used in asynchronous communications.
		Developed in 1977 by Ward Christensen, XModem is widely...
		YModem, in computer science, a variation of the XModem file-transfer protocol that includes the following enhancements: the ability to transfer...
	ca.encarta.msn.com /Xmodem.html (67 words)

	XMODEM - Wikipedia, the free encyclopedia
		XMODEM is a simple file transfer protocol developed as a quick hack by Ward Christensen for use in his 1977 MODEM.ASM terminal program.
		XMODEM became extremely popular in the early bulletin board system (BBS) market, largely because it was so simple to implement.
		XMODEM was written for CP/M machines, and bears several marks of that operating system.
	en.wikipedia.org /wiki/XMODEM (2260 words)

	SBS Kermit and Xmodem - A Comparison
		Xmodem sends or receives one file each time the program is run.
		Xmodem handles file name collision by aborting the transfer, replacing or appending to the file.
		Xmodem sends an exact image of the data and requires an 8-bit line to transfer 7-bit data.
	www.sbsw.com /Articles/kermxmod.htm (1165 words)

	Xmodem - Glossary - CNET.com
		This is a protocol for transferring files during direct dial-up communications.
		Developed by Ward Christensen in 1977, Xmodem has basic error checking to ensure that information isn't lost or corrupted during transfer; it sends data in 128-byte blocks.
		Xmodem has undergone a couple of enhancements: Xmodem CRC uses a more reliable error-correction scheme, and Xmodem-1K transfers data faster by sending it in 1,024-byte blocks.
	www.cnet.com /Resources/Info/Glossary/Terms/xmodem.html (64 words)

	Cisco - Xmodem Console Download Procedure Using ROMmon
		Xmodem can be used on a group of routers (see Components Used) and is used in disaster recovery situations where the router has no valid Cisco IOS software or bootflash image to boot from and hence, only boots up in ROMmon.
		Here is the command syntax for xmodem as per the Command Reference Manual for Cisco IOS version 12.2.
		Xmodem is a slow transfer protocol, and the transfer of a file as large as a Cisco IOS software image could take an unacceptably long time.
	www.cisco.com /warp/public/130/xmodem_generic.html (2628 words)

	Xmodem definition - isp.webopedia.com - The Glossary for Internet Service Providers
		Originally developed in 1977 by Ward Christensen, Xmodem is one of the most popular file-transfer protocols.
		Although Xmodem is a relatively simple protocol, it is fairly effective at detecting errors.
		Xmodem can be implemented either in software or in hardware.
	isp.webopedia.com /TERM/X/Xmodem.html (190 words)

	Telecomputing Today: Inside XMODEM
		After notifying the remote system that you want to download a certain file with XMODEM, the other system prepares the file for transmission and then waits for your signal that things are ready to begin.
		Although the original standards for XMODEM file transfers are well established, not all terminal programs that advertise XMODEM capability actually conform to the standard.
		What they don't know is that their implementation of XMODEM was not strictly by the book.
	www.atarimagazines.com /compute/issue61/321_1_TELECOMPUTING_TODAY.php (727 words)

	[No title]
		XMODEM Xmodem is a popular error recovery type protocol for transferring files between computers via serial, asynchronous communications.
		Xmodem Initiation Prior to entering the protocol, both the transmitting and receiv- ing computer must know where to get the data (what file is to be transmitted) and where to put the data (file to store the data or buffer area).
		In Xmodem one side of the file transmission is always in charge (local computer), asking the other side (remote computer) to either transmit a file or to accept a file.
	artofhacking.com /IET/COMM/WXMODEM.DOC (2092 words)

	Xmodem
		Please note, not all implementations of Xmodem are compatible with the Xmodem implemented in the Data Pump.
		The behavior of Xmodem in Data Pump is tunable to provide compatibility with broken and bizarre implementations of Xmodem.
		After you are logged in and have given the appropriate Xmodem command on the remote computer, Xmodem file transfers are started on the local machine running Data Pump by issuing, in a script, a
	www.blast.com /software/data_pump/DP_Xmodem.html (832 words)

	xmodem
		The Xmodem protocol was created years ago as a simple means of having two computers talk to each other.
		Xmodem can be considered to be receiver driven.
		That is, the receiver sends an initial character “C” to the sender indicating that it’s ready to receive data in CRC mode.
	www.amulettechnologies.com /support/help/xmodem.htm (546 words)

	[No title]
		XMODEM's origins The XMODEM (aka MODEM7) protocol was originally devised by Ward Christensen as a protocol for communicatons between microcomputers.
		The XMODEM protocol has several assumptions implicit in its design, and these assumptions are the source of the problems people have in using XMODEM protocol on CompuServe.
		Here are some major classes of problems: 3.1 XMODEM Timing Since XMODEM was originally devised for micro-to-micro communications, it has some problems fitting into an environment where one of the computers happens to be a mainframe and the two computers are not connected over a simple phone line but via a packet switching network.
	www.umich.edu /~archive/atari/8bit/Unverified/Cislib_b/xmodem.doc (3017 words)

	Xmodem, Ymodem and Zmodem
		Xmodem sends 128 bytes and a checksum, waits for a Acknowledgment to say all is well and sends the next block.
		Xmodem is a simple protocol, as you would expect of a program written for 8-bit computers running CP/M.
		The Zmodem protocol is substantially more complex than the Xmodem protocol, but since we only seek to at most compile the code, that complexity need not concern us.
	www.tldp.org /HOWTO/Remote-Serial-Console-HOWTO/upload-zmodem.html (226 words)

	The Guide - XMODEM YMODEM and ZMODEM (Site not responding. Last check: 2007-09-02)
		The original Xmodem protocol uses 128-byte packets and a simple "checksum" method of error detection.
		Xmodem protocol always attempts to use CRC first.
		Xmodem 1K is essentially Xmodem CRC with 1K (1024 byte) packets.
	web.cecs.pdx.edu /~rootd/catdoc/guide/TheGuide_226.html (378 words)

	Commands Reference, Volume 6 - xmodem Command
		The xmodem shell command is used with the Asynchronous Terminal Emulation (ATE) program to transfer a file, designated by the FileName parameter, using the xmodem protocol.
		The xmodem protocol is an 8-bit transfer protocol to detect data transmission errors and retransmit the data.
		Use the xmodem command on the remote system in combination with the send subcommand or the receive subcommand from the ATE Connected Main Menu on the local system.
	www.ncsa.uiuc.edu /UserInfo/Resources/Hardware/IBMp690/IBM/usr/share/man/info/en_US/a_doc_lib/cmds/aixcmds6/xmodem.htm (460 words)

	[No title]
		Xmodem, CRC Xmodem, Wxmodem File Transfer Protocols Please circulate this document anyway that you see fit without alteration except on the page at the end titled: "Notes and Comments".
		The development of CRC Xmodem is a clear response to the integrity phase of a service as it reduced undetected transmission errors by many orders of magnitude.
		Xmodem, CRC Xmodem, WXmodem June 20, 1986 Page 8 ---------------------------------------------------------------------- Upon entering the Xmodem protocol, the transmitting computer waits between 10 seconds and a minute to receive an NAK character from the receiving computer.
	www.textfiles.com /programming/FORMATS/xmodem.pro (1909 words)

	HS XMODEM 1.0 C Source Library (Site not responding. Last check: 2007-09-02)
		HS XMODEM is a software library in C (supplied with full source code) that provides a programmer with the off-the-shelf support for XMODEM protocol data transfer capability.
		Xmodem module handles all protocol information flow, error recovery, acknowledgements, timeouts and so on.
		As a backup or an alternative to TFTP, Xmodem is often used in embedded devices and appliances for the purpose of software or configuration upgrade or retrieval.
	www.hillstone-software.com /hs_xmodem_details.htm (207 words)

	What is Xmodem? - a definition from Whatis.com
		- Xmodem is an error-correcting protocol for modem that was created in 1978 by Ward Christensen and became a de facto standard.
		Modems that agree on using the Xmodem protocol send data in 128-byte blocks.
		Xmodem uses the checksum method of error checking.
	searchnetworking.techtarget.com /sDefinition/0,,sid7_gci213405,00.html (241 words)

	[No title]
		As author of the early 1980s batch and 1k XMODEM extensions, I assumed readers of earlier versions of this document would implement as much of the YMODEM protocol as their programming skills and computing environments would permit.
		The name XMODEM caught on partly because it is distinctive and partly because of media interest in __________ 1.
		Chapter 8 Xmodem Protocol Overview X/YMODEM Protocol Reference June 18 1988 27 8.3 Data Flow Examples with CRC Option Here is a data flow example for the case where the receiver requests transmission in the CRC mode but the sender does not support the CRC option.
	pauillac.inria.fr /~doligez/zmodem/ymodem.txt (4319 words)

	[No title]
		Files received using one of the batch modes will be stored under their transmitted names (except that any "/" characters in the file name will be converted into ":" characters, all upper-case characters will be translated into lower case and trailing dots will be expunged).
		.PP When a batch receive is requested,.I xmodem takes a wait and see attitude and can adapt to either batch protocol or even a classic XMODEM transfer (note that CRC-16 mode is automatically set under these circumstances unless the b flag is specified).
		Further note that if one of the batch protocols is used, the received file(s) will be stored under their own names and the name on the command line (if any) will be ignored.
	www.ugu.com /pub/unix/sec1/xmodem3.6/xmodem.1 (1272 words)

	Serialio - Products - Java XModem & YModem
		Use XModem and YModem with our SerialPort product, or with any serial port product that provides you with with Input/Output streams.
		X/YModem supports both 128 byte blocks using checksums (Xmodem) and 1024 byte blocks using CRC checking (Xmodem-1K).
		XModem and Ymodem are widely supported on many systems, so you can easily exchange files with legacy systems.
	www.serialio.com /products/jxmodem.htm (145 words)

	[No title]
		I suspected something was wrong when xmodem kept reporting 1200 baud modem connections as 1800 baud in the log file, but the transfers still worked OK at 1200 baud.
		On line 386 of getput.sysv.c, in the procedure getspeed(), an array is declared containing numerical constants representing the various baud rates supported by the host terminal interface.
		Based on XMODEM Version 1.0 by Brian Kantor, UCSD (3/84) (Don't blame him in any way for what follows....) Version 2.0 (CRC-16 and Modem7 batch file transfer) (5/85) (Thanks to D'Anne Thompson for the batch transfer code).
	hpux.cs.utah.edu /ftp/hpux/Users/xmodem-3.9/xmodem-3.9.README (1084 words)

	fred potter (Site not responding. Last check: 2007-09-02)
		This is the beginning of a full XModem implementation within Java - as of this writing, only receive capability is provided.
		It also only supports the bare minimum required for an XModem implementation: 128 byte data blocks with an 8-bit checksum.
		Several upgrades to the XModem protocol were released by various people following the protocol's first release in the late seventies, namely 1024 byte data blocks with a 16-bit CRC checksum.
	students.washington.edu /fpotter/code.shtml (144 words)

	Glossary Search Results
		It is also a very flexible way to exchange data over the Web and interpret and use data from other websites.
		Xmodem - A protocol for transferring files during direct dial-up communications.
		Developed by Ward Christensen in 1977, Xmodem has basic error checking to ensure that information isn't lost or corrupted during transfer.
	www.geek.com /glossary/glossary_search.cgi?x (823 words)

	XMODEM (Site not responding. Last check: 2007-09-02)
		This option allows you to transmit a file to a notebook through a RS232 communication link using the XMODEM protocol.
		This dialog allows you to specify the transmission parameters before the transmission is started.
		The dialog's title is: XMODEM Transmit to followed by the name of the notebook selected for the transfer (In the dialog above the notebook that is used is Modem).
	www.osginformatique.com /english/ManVGFD/sendxmodem.htm (172 words)

	Basic XModem Transfer Protocol - AtariAge Forums
		From: Lompoc, CA Trying to do a basic send only Xmodem transfer protocol and having a few problems getting a good description of the checksum calculations.
		I'm looking at the XModem 128 byte using the original checksum method and/or the CRC method.
		Trying to do a basic send only Xmodem transfer protocol and having a few problems getting a good description of the checksum calculations.
	www.atariage.com /forums/index.php?showtopic=10807 (255 words)

	Xmodem Console Download Procedure Using ROMmon (Site not responding. Last check: 2007-09-02)
		Xmodem can be used on a group of routers (see
		Components Used) and is used in disaster recovery situations where the router has no valid Cisco IOS software or bootflash image to boot from and hence, only boots up in ROMmon.
		Note It is also important to note that the -sdata-rate option is only available on the Cisco 1600 series routers and was implemented to overcome the console baud rate limitation of 9600 bps.
	www-tss.cisco.com /eservice/compass/common/task_xmodem_console_download.htm (1635 words)

	FileLink: Async (ZModem, XModem, YModem) plus FTP File Transfers
		The FileLink script language provides all the features you need to automatically dial your modem, recognize host prompts, send logon and password strings, send and receive text and binary files using multiple file transfer protocols (Kermit, XModem, ZModem, YModem and FTP), detect and handle error conditions, log results, and wait for the next session.
		Automated FileLink transfers can be launched from a desktop icon, DOS command line, script file, batch file or run continuously as a system service on Windows NT, 2000, XP, or Server 2003.
		Each protocol's special features are supported as well, including Configurable Zmodem Sliding Window, "over-write" file control and crash recovery for Zmodem.
	www.serengeti.com /async-file-transfer-zmodem-ymodem-xmodem.php3 (495 words)

	Best free xmodem downloads. XModem/YModem/ZModem/Kermit .Net Compact Framework Class Library. ...
		Xmodem software: XModem/YModem/ZModem/Kermit.Net, XModem/YModem/ZModem/Kermit.Net Control, Serial Communication Library For Pocket PC and more.
		It supports ZModem, YModem, and XModem file transfer protocols as well as modem communication.
		It was developed with eMbedded Visual C++ 3.0 which includes a Pocket PC emulator that behaves virtually identically to any of the Pocket PCs on the market today.
	www.freedownloadmanager.org /downloads/xmodem_software (692 words)

	Serial Communication MSDOS INT14 Driver (ZMODEM / XMODEM / YMODEM file tranfer)
		A device driver (commdrv.drv) that allows any application or program the ability to write to the serial port if it can open, read, and write to a standard file.
		It may also be executed from any tool, application, or language that has the ability to run or spawn other executable programs(e.g., QuickBasic, Magic, BBS programs, etc.).
		The file transfers currently supported are ZModem, XModem, and YModem in their various flavors.
	www.wcscnet.com /CdrvDBro.htm (1079 words)

	Serial communication library for PocketPC (Zmodem, Xmodem, YModem, Modem)
		Support any baud rate in excess of 460K baud that is supported by the underlying hardware.
		File transfer libraries allow Xmodem, Ymodem, and Zmodem file transfers on multiple ports at the same time.
		Output bytes to serial port and wait for a token that matches one in a table of tokens.
	www.wcscnet.com /CdrvCBroStandard.htm (461 words)

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