173 lines
7.8 KiB
Plaintext
173 lines
7.8 KiB
Plaintext
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Version 1.01
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UNREGISTERED 30 DAY EVALUATION
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Copyright (c)1994 Part & Kent Co.
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Welcome to Lightning Z-Modem 1.01, this program is a breakthrough
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in transfer protocol! Many utilities today claim to boost your
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modem speed, but in reality they are not effective and in some
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cases they are hoaxes!
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Introducing our new L-Zmodem 1.01, this advanced state of the
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art lightning fast transfer protocol will save you $100's of dollars in modem
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upgrades! This is probably the LAST protocol you will ever need!
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It took 3 years of research and programming to create this protocol.
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WHAT IS SO SPECIAL ABOUT THIS ZMODEM ?
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======================================
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Regular Z-Modems will usually transfer at average between 1500-1600 CPS!
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Some Z-Modems will transfer even up to 1800 CPS! on a 14.4K modem! We
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discovered that Z-Modem protocol has built-in hidden features and it
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is actually possible to make use of this hidden feature. This makes
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L-Zmodem 1.01 compatible with *ANY* version of regular Z-Modem!
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This new transfer protocol will not only assure CLEAN error-free
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transfer but it will actually transfer at speeds 4-10 times faster
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than regular Z-MODEM !!!
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TECHNICALLY THIS IS IMPOSSIBLE !
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================================
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When we first released this program, we got many letters from modem
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companies, individuals, companies and BBS System Operators telling
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us that this is all a *HOAX* and it can't be possible on a 14.4k modem !!!
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Of course we do understand that it is IMPOSSIBLE! The secret most
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people do not know is, the way L-Zmodem 1.01 operates! We are not
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about to reveal the formula, but we will explain to you the basics
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of how this all works.
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I'm sure you have heard of Fractal Compression ? No ? Well this
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technology was experimented a few years ago with no success as the
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compression technique would be too slow and often it would be
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almost impossible to decompress the compressed file also resulting
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in decompressed files being corrupt. We have worked upon this
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technology and improved it. We use special compression modules
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that work in conjonction with your V42 BIS and LAP-M modem protocols
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to provide the best compression possible. Not only that, with
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artificial intelligent realtime block-compression technique
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we are able to compress data a fraction of its size before being
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sent through the com port. We do not use only fractal compression
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here as it is mostly used as an experiment on image files. When
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sending a file through modem, the software will constantly ANALYSE
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the file being sent and determine the best compression method!
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Other complex methods are used also!
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AGAIN THIS SOUNDS IMPOSSIBLE!
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=============================
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We have eliminated all the overhead associated with regular Z-modem!
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adding our own 16 BIT CRC check! Why not 32 BIT ? To save overhead
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time we have included another 16 BIT CRC check within the
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compression/decompression, all in 100% ASM code for fast operation!
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LET'S TALK RESULTS NOW!
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=======================
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The importance here is NOT in the way L-Zmodem 1.01 works, it's
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the results it gives! L-Zmodem 1.01 will work as a stand-alone
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protocol from DOS, or can be used and integrated with virtually
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*ANY* terminal program or BBS software, easally, either using
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BATCH FILES or direct calls !!!
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It's not necessary for both parties to have L-Zmodem 1.01 installed,
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but the speed will be normal Z-MODEM! In order to assure 100% accuracy,
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an increased speed and a clean transfer, you HAVE to have L-Zmodem 1.01
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installed on both end to assure compatibility !
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Here's the results you can expect when using L-Zmodem 1.01 protocol
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in both ends.
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PLEASE NOTE: This transfer protocol will work ONLY with 14400 baud modems!
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set in V42 BIS LAP-M, and preferably clean lines!
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AVERAGE CPS RATE
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Regular un-compressed image, sound, 15000-20000 CPS
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documents, and other files (No mistake here !!)
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Results vary according
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to different file types
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Tightly-compressed .ZIP,.ARJ,.LZH 4000-7000 CPS
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and other compressed files The file is DE-COMPRESSED
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and re-compressed using our
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special module, all is done
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in realtime!
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NOTE: If both ends do not have L-Zmodem 1.01, for example the user
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has L-Zmodem 1.01, and remote has ZMODEM, then L-ZMODEM will
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transfer at regular ZMODEM speed since it is backward compatible
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with ALL ZMODEM protocol!
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There is no special knowledge needed to use this protocol, it
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is FULLY AUTOMATIC, and will detect if it's being used from
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DOS or on a BBS system!
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Always make sure you have your COM PORT BAUD RATE set at 57600
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eventhough you have a 14.4k modem!
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STILL NOT CONVINCED ?
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=====================
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Please do not think to yourself that a 14.4k modem cannot
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transfer at speeds more than 14.4k! The hardware part cannot
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of course.
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BUT HOW CAN YOUR L-ZMODEM PROTOCOL SURPASS THE 28.8k and even the 57.6K?
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========================================================================
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Usually the 14.4K V42 BIS modem has a throughout capacity of 57.6Kbauds!
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So how can data be sent FASTER ? Actually IT WON'T data will be
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sent at SAME SPEED!
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It's all in the way the data is sent. Please remember that when
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you get high CPS speeds, your modem technically is NOT running
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faster, it cannot, that's impossible, it is simply sending data
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differently, the data is being shortened before it's sent
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so it's sent in reduced size and de-compressed on the remote end.
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30 DAY EVALUATION
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=================
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You have an initial 30 DAY EVALUATION PERIOD for this unregistered
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copy. If you find this program useful, and I'm sure you will
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be convinced, then you must register! By registering you help
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us do more research and create new products to help boost performence
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of your computer.
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We are in the process of writing an integrated terminal program which
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will support L-Zmodem! You will receive a complete instructions
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manual and the registered copy which will include more features,
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a graphical display and the ability to SEND & RECEIVE files
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at high speeds, and will also include FAX capability!
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To register, please write us a letter, with your complete name,
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adress and phone number and enclose $49,95 US funds to:
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Part & Kent Co.
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156 5th Ave, #323
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New York, NY 10010
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USA
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Compare $49,95 with the price of a new HS-MODEM !
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