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With a null modem, it is similar. First, you need to tell both sides
that they are online. Reading the manual is strongly encouraged! This
is easy for some programs, where you can just start them or set an
option, and they're running. Other, like Windows 95's Hyperterminal,
are almost dead set on dialing a modem first. You'll also need to set
both sides to communicate at the same speed and connection parameters
(8 bits, no parity, 1 stop bit, aka '8N1' is customary). When you've
got that done successfully, you can type on either computer's keyboard
and have it appear on the other's screen.
Once the null modem connection is set up, you can transfer files. From
the receiving end, issue the command(s) to receive a file in some
protocol, such as Kermit, X-Modem, or Z-Modem. Then, from the sending
side, issue the command(s) to send a file in that same protocol. The
file should then be transferred. (As above, reading the manuals and/or
documentation for the software used is highly encouraged).
A very nice null modem is the CrossWorks product, which has been taken
over by Sequential Systems. It is a null modem cable as well as Apple
II and IBM PC software that lets you translate certain types of files
between both sides, such as Appleworks files, and keep the formatting
roughly intact. See the vendors lists below.
5.7 How do I read/write files from other platforms with an Apple II?
As noted above, Apple II drives write differently at a hardware level
than IBM PC drives; you will not be able to write to IBM PC 5.25"
disks or 720K 3.5" disks from Apple IIs unless you have special
hardware.
If you have an Apple //e, the Bluedisk from ///SHH systeme, which lets
you plug in IBM PC 3.5" and 5.25" drives to an Apple II; you should be
ablt to transfer files with standard file copy programs. Another
option is the AE PC Transporter card, which had PC disk drive support
for 5.25" and 3.5" drives, as well as the software to translate
between the two. You also get the ability to run a number of IBM PC
programs on your Apple.
If you have a 3.5" drive on your system capable of reading 800K or
1.44MB disks, you can read Mac (HFS) disks of the right size directly
with some pieces of software:
ftp://apple2.archive.umich.eduapple2/8bit/util/a2fx.8.bsq
ftp://apple2.archive.umich.edu/apple2/8bit/util/hfslink.b3.bsq
Null modem's also an option if your Apple II has a serial port. Such a
port is built into the //c, IIc+ and IIGS; you will need to purchase a
card such as the Super Serial Card to add such functionality to a ][,
][+ or //e.
5.8 How do I read/write files from other platforms with an Apple IIGS?
With support for both 3.5" and 5.25" drives, the Apple IIGS is the
best all-round platform for transferring files between various setups.
First, all of the Apple II programs and methods are available to it;
see the section just above this for those.