home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The World of Computer Software
/
World_Of_Computer_Software-02-385-Vol-1of3.iso
/
z
/
zr245l1.zip
/
ZYRION.WHY
< prev
Wrap
Text File
|
1992-11-24
|
4KB
|
151 lines
Draft 111092
Why ZyRion<Tm>
Released By DreamScape "Another break in the wall of Communications"
Copyright 1990,91,92 By International Communication Research Holland
ZyRion Version 2.45.1.0 [ Level-1 ]
INTRO PROTOCOLS
---------------
Asynchronous communications, refers to serial data transfers characterized
by irregular transmission of data segments.
This form of data link control is character-oriented-each set of data bits
transmitted constitutes one character and each character is provided with
its own framing data.
A start bit and a stop bit frame the character's data bits and act as sync -
flags for the receiving device.
After receiving a start bit, the receiving device must be able to accuratly
measure a total of NINE bits (eight data bits and a stop bit) to determine
whether each is a logical 1 or 0.
Because of this character-by-character resynchronization, Asynchronous com-
munication allows some tolerance for inaccuracies between the clocks of the
transmitter and receiver.
Many Asynchronous protocols are on the marked today, and ALL using the method
above plus as check between each Block CRC either 16 or 32 bits.
The best one was a while ago "XMODEM", and still you'll find this public domain
protocol on a lot BBS systems.
ZMODEM is the lead protocol today, while before XMODEM was the lead protocol -
for the past.
A lot programmers in communication have try to break the baricade "extra bits"
and compression was the only way to get the job done, IF a file can be
compressed it will look faster, since the time frame has been changed, compared
with the filesize and normal time.
But what about files that can't be compressed any futher?
ZYRION WHY?
-----------
So as I said before, First XMODEM, then ZMODEM and now ZYRION "Why NOT?"!
ZyRion uses a complete other method then only compression, it works like
a ASCII to internal matrix DFC code translator.
In simple words so you can understand this ZyRion will send a byte that has
a complete other binary code, depended on wich character the size from each
byte.
Some times one byte is only 5 bits long, sometimes its 6 or 8 bits long, -
ofcource you need to add the stop and start bit so one complete data segment
is between 7 and 10 bits, you'll understand that the througput without RLE
or compression is still high enough to handle complete compressed files.
And IF a file can be compressed ZyRion will use also compression!
Five years of research and the result is DFC a new standard for CRC and Bit
code translation, this makes ZyRion FAST, even so fast that the data will be
checked at 64 bits level!
ZyRion uses also TimeSync Framed access to stay in sync with the receiver, -
even if the two links are "delayed" because long distance calls or whatsoever.
Maybe you'll NOT understand all above, but in short ZyRion is reliable and -
fast, and that is our goal!
NOT to make fancy protocols with chat and so on, Please people it is your -
money, its your time, each minute, second counts, special on LD Calls agree?
So therefore ZyRion.
Be logical, there are games enough to play with, think about your phone -
bill!
One of our testers asked me, how can I tell my users to register ZyRion?
They using ZModem, "GSZ,DSZ" and thats for free.
Wrong, "GSZ,DSZ,YAM,GYAM" is NOT for free, but the most people don't pay -
for it, thats an complete other story don't you think so?
I did, I payed for ProYam, and it is a PERFECT communication tool!
And IF you want that programmers like myself, and a lot other programmers -
proceed to make your live easy in communication, Please consider registrations,
you need to pay your phone bill aswell IF NOT You'll be disconnected.
╔══════════════╗
║ ╔════════╗ ║
║ ║ ║ ║
╚══╝ ╚══╝
A message From
Frans Lupschen programmer for
International Communication
Research
╔══╗ ╔══╗
║ ║ ║ ║
║ ╚════════╝ ║
╚══════════════╝