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1994-01-31
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* The Technician's Lounge BBS 718-919-1991 New York City Online 24/7/365 *
vFAST v0.07 Beta
Copyright 1993-94 (c) International TeleCommunications
All Rights Reserved
Introduction
vFAST was designed specifically for v32, v32bis, and vFAST
modems. You should not attempt to use vFAST with a 2400 baud
modem unless your modem is error correcting. The reason, a
single error could produce a resend request for as much as
8192 bytes. It COULD be as little as 256 bytes but the risk
of 8192... well that is up to you.
vFAST needs ONE of the following:
16550 Uart
Intelligent Digiboard (2, 4, 8, or 16 port).
Intelligent Stargate.
Intelligent Arnet.
If you don't have one of the above, well try and see. You
MIGHT be able to keep up but I doubt it.
vFAST is just what the name implies, a vERY FAST protocol,
it'll run circles around Zmodem.
vFAST uses DUAL 16 bit CRC's to protect data. Each SHORT
block of data has a 16 bit CRC and every 8192 bytes has
another 16 bit crc. In short, CRC's inside of CRC's. Just as
effective as one single 32 bit crc but has much less CPU
overhead.
vFAST has RESTART recovery for aborted transfers as well as
SKIP for files you ALREADY have.
One way to BOOST speed and cut down on CPU overhead is to
reduce SCREEN writes to a bare MINIMUM. We'll only show you
enough data on the screen to let you know what is going on.
We'll only update the screen, unless an error occures, every
8192 bytes.
You can ABORT a transfer by pressing ESC (Receive Mode only).
Again, to keep CPU overhead low, we only check the keyboard
every 8192 bytes so there may be a short delay between the
time you press ESC and the program acknowledges the ESC.
Once you see the acknowledgment, nothing may appear to happen
for upwards of 10 to 12 seconds. vFAST is attempting to clear
out the RX buffer and phone lines before exiting, to prevent
garbage from spraying all over your screen.
Command Line Switches
vFAST supports the following command line switches:
-Tx Use Timeslicing when you cannot send or
receive anything. x is the TYPE of time
slicing. Valid TYPES are:
D Desqview
O OS-2
W Windows
If you use OS-2 or Windows Time Slicing, you
must have have DPMI turned on.
-Bxxxxx xxxx is the connect baud rate.
-Pxxx xxxx is the serial port, 1-4 if using the
standard internal driver.
-Lxxxx xxxx is Serial LOCK rate, 9600 - 115000.
-S <Fnames> Start Sending files. Fnames is the names of
the files to send. Each name should be
separated by a single blank space. If Fnames
is prefixed with an AT sign, @, vFAST will
ASSUME Fnames is the name of a SEND control
file.
E.g. -S @C:\TERM\SEND.CTL
SEND.CTL would be a text file listing the
files to send, one per line. Drive, path,
and DOS wildcards supported.
This must be the LAST command line switch used.
-D<TYPE> The TYPE of serial driver to use. Valid <TYPE>
are:
D Digiboard
S Stargate
A Arnet
The default is the internal (Standard DOS type
serial ports) highspeed serial driver.
-N*N If you're running vFAST as a protocol driver
with Osiris XLT, include this switch.
-R Begin Receiving, must be the LAST command line
switch used.
-K Disable Keep Aborted Transfers. The default it
to keep all partial transfers. If you use this
driver as an external protocol driver for a BBS
you'll want to include this on the command
line.
The minimum command line for RECEIVING a file would be
something like this:
vFAST -B<BaudRate> -L<LockRate> -P<Port Number> -R
The minimum command line for SENDING a file would be
something like this:
vFAST -B<BaudRate> -L<LockRate> -P<Port Number> -S <Ctl Filename>
Notice that I assumed a LOCKED serial port.
Example of an Osiris XLT Rcv cmdline:
VFAST -B*B -L*L -N*N -P*P -K -R
Example of an Osiris XLT Send cmdline:
VFAST -B*B -L*L -N*N -P*P -S @*U
Beta
As you will not doubt notice, this is BETA software. The
OFFICAL release date is Jan. 1, 1994. Use it at your OWN
risk. However, we've done a TON of transfers with it and it
seems to work just fine.
Shareware
vFAST is shareware. Meaning you can use it for up to 30 days
without registering it.
If you use vFAST longer than 30 days, you must register your
copy or stop using it.
To register send $15.00 (US Currency) to:
International TeleCommunications
302 W. Mckinley
Poplar Bluff Mo. 63901-6372
United States Of America
NOTE: You will not receive anything back from us. Shareware
means the program is fully functional so there is nothing to
send you.
* The Technician's Lounge BBS 718-919-1991 New York City Online 24/7/365 *