From: thester@nyx.cs.du.edu (Uncle Fester)
Subject: PC to ATARI File Transfers (CHEAP!)
Organization: Nyx, Public Access Unix @ U. of Denver Math/CS dept.
Date: Thu, 10 Sep 92 01:20:32 GMT


	Here is a way for those people without a double-
	density drive for the Atari to transfer files
	from a PC to an Atari 8-bit.  (810 drives or
	stock 1050)
	This method _does_ require that you have a modem
	for both machines.
	I used to do this a couple of years ago before 
	I discovered the 'util' programs that are for
	transferring files via a MY-DOS formatted double-
	density disk with a PC's 360K drive.
	I used both BobTerm and 1030 Express! with my
	1030 modem.  My PC uses Telix.
	You will need three lengths of telephone line
	with a RJ11C connector plug at each end and one
	'Y' adaptor plug (splitter).
	Hook things up as per the following:
	
	----                                     ----
	 PC ------------------------------------ Atari
	----                                     ----
          \                                       /
            \                                   /
              \                               /
                \                           /
                  \                       /
                    \                   /
                      \               /
                        \           /
                          \       /
                            \   /
                              \/
                         Splitter at Phone
                             Jack (wall plug)

	Hook the PC modem to the Atari modem via the 'line' 
 	jacks or the 'to telephone' jacks.
	From the splitter at the phone jack, run a wire to
	each of the remaining jacks on the PC and Atari
	modems.  This will provide the needed 'carrier'
	that a modem requires for its signal.
	Boot your comm programs on each computer.
	With the comm program of each machine, set one to
	'originate' and the other to 'answer'.  Follow your
	comm programs instructions on establishing the 
	connection. NOTE: On some telephone systems, when
	you attempt this, it will disconnect after a short
	time. (NO CARRIER).  This is because some systems 
	have an automatic "alarm" to draw attention to the
	fact that you have left the phone off the hook.  This
	is actually what you are doing when you use this
	method.  It then "hangs up".  To get around this, you
	need to have a phone hooked up to one side of the
	line from the PC to ATARI line connection.  Yes, you
	need another splitter.  Hold that phone 'off hook' and
	listen to the nice beeps and buzzes that the phone
	company so nicely provided to keep you from accidentally
	leaving your phone off hook.  Wait until it is
	completely through having this fit, and then while still
	holding it off hook, establish your connection as 
	outlined previously.  Once the two computers are
	connected via your comm software, go ahead and put the
	phone back down.  They will now be properly 'connected'.
	Make sure your parity and duplex are set properly. Type
	a word from each keyboard and see that the other responds
	in the same manner and that one keyboard is not producing
	'echoed' lines of your text.
	Now you can tranfer files between the two computers using
	whatever protocol both comm programs support between the
	two.  Just like you dialed up your favorite BBS, this
	method will only transfer the files at whatever baud rate
	your receiving modem can support.  1030, 835, and XM301
	modems only support 300 baud.  This is a very slow way
	to transfer files, but IT WORKS.  
	I have used this method many, many times in the past and
	there was no damage to either my modems or computer.
	You may have to 'play' with the arrangement in order for
	it to work properly.  For example, if you have the two
	modems hooked together via the plug marked 'line jack',
	you may have to change so that they are hooked together via
	the 'to telephone' plugs.  The lines from the splitter
	will of course go the the remaining plugs.
	This is an economical way to do things as compared to
	the cost of finding and buying an XF551 double-density
	drive or a modified 1050, or some other 3rd party drive.
	It is also cheaper than a 'null modem' cable arrangement
	but not as fast.  No 850 interface or equivalent required.
	While I emphatically state that no damage was done to any
	of my equipment, I will not be responsible nor take any
	responsibility should things turn out differently for you.
	Modems were designed to hook up to telephone lines, just not
	in this manner.  The principle is still the same though and
	there should not be any problems as a result of doing this.
	For best results on the Atari side, you really should use
	BobTerm.  
	
	Good Luck!!

	Uncle Fester
		

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