[fa.info-mac] mackermit through a tac

info-mac@uw-beaver (info-mac) (11/16/84)

From: Stewart_French <french%ti-eg.csnet@csnet-relay.arpa>
For those interested,

I connect into an ARPA TAC here in the Dallas area and connect to USC-ECLB
where I have an account.  I have been able to transfer .HEX and .DL files
without problems.  But .RSRC file transfer had been out of reach.
I formed a question and mailed to info-mac but it was either never
received or never posted.  Maybe this message will make it onto the
BBoard.

I have figured out how to transfer executable images up and down through
an ARPA TAC.  I call into the local TAC at 1200 baud, 8-bits, no parity.

The commands that you must give the TAC are:

@B O S
@B I S

I do not know what it does, however it does work.  Macintosh Kermit can 
transfer 8 bit data after executing this command.  Note that @B I S causes 
the '@' to lose any significance so this must be the last command that 
you execute.  Also,  nothing else must be done.  No special commands to 
kermit, at either end.  When you logout from the host at the other end of 
the TAC the '@' regains its significance.

Stewart French
french%ti-eg @ csnet-relay

info-mac@uw-beaver (info-mac) (11/17/84)

From: cracraft@sri-tsca
I think @B O S and @B I S mean binary output set and binary input set,
e.g. they enable 8-bit. Does that sound logical?

	Stuart

info-mac@uw-beaver (info-mac) (11/17/84)

From: Devon S. McCullough <DEVON@MIT-ML>
@Binary Output Start makes your TAC send the TELNET command sequence
IAC DO TRBIN, requesting your host to send you 8-bit binary data
instead of 7-bit ASCII.  The host replies with IAC WILL TRBIN, which
turns off padding and suchlike which are normally done by the TAC.

@Binary Input Start makes the TAC send IAC WILL TRBIN, telling your
host you will now be sending 8 bit binary data, the host responds with
IAC DO TRBIN, and the TAC sends 8 bits without intercepting @, etc.

The right way to do this is to have it done by the program on the host,
so that the user need never know it was even necessary.  When the program
exits it can send the IAC DONT TRBIN and IAC WONT TRBIN which correspond
to the TAC commands @Binary Input End and @Binary Output End, restoring
the TELNET connection to a normal state.  Modem programs typically check
to see if the user is on a TELNET connection and do this, and double all
hex FF data characters so they won't be taken as IAC's by the arpanet.

I just logged into the MIT-TAC and it asked me for a password, after
telling me a guest password to use.  When real passwords are installed
in a month or so I fear that's the last y'all will be hearing from me.
Anyone have UUCP for the Mac yet?

				--Devon