Bingo! You’re back with the A>! And from there you go on to WordStar,
etc.
If you’re using the IBM version of MODEM7, you use the command =DOS=
instead of =CPM= (unless your menu says otherwise).
TO TRANSMIT MATERIAL ON YOUR DISK WITHOUT ERROR CHECKING—WITHOUT A
MODEM7-STYLE PROGRAM AT THE OTHER END
MODEM7 uses the Ward Christensen Protocol—sometimes called the XMODEM
Protocol—to help make sure the material is going from computer to
computer okay.
If you don’t use error checking in transmitting files, the static on the
phone lines may garble some words. Your computer, after all, is just
squirting your file over the phone without bothering to find out if the
other machine is receiving it right. You want error checking if you’re
transmitting or receiving software; just one electronic goof, just a
single messed-up “one” or “zero,” can throw the whole program out of
whack.
But sometimes, when you aren’t dealing with programs, you’ll want to
skip error checking. That way, the transmission will go faster. And
it’ll be easier for computers with different communications programs to
talk to one another.
There’s still no guarantee you’ll communicate, but with an industry
standard like MODEM7 you have a good shot at it.
Here, then, is what you do to send a file to someone without a
MODEM7-style program: