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Section C:
Utility Programs
****************
*
$COPY
*
****************
A
few examples:
To obtain a listing of the file "TEXT.DAT
11
directly on
the printer, you would type:
$COPY TEXT.DAT X:LSTOUT
Should you make up your mind to manually create a file, here
is the way
to go:
$COPY X:CONIN TYPEIN
Now
all input from the keyboard is directly stored in the file
11
TYPEIN
11
unless you type Ctrl-Z.
C.4.6.l. Data Communications
This
paragraph
is a very essential one,
By means of
$COPY,
you
can
transfer data from one computer to another via a long data line. Connect
both computers using modems and their RS-232 interfaces,
Use=> $DEVICE
to assign the serial interface to the AUXIN:
and AUXOUT:
devices. Then
you are ready to enter the command
$COPY filename X:AUXOUT
to
transmit a file,
and the machine at the other end of the line
will
receive by
$COPY X:AUXIN filename
For
the knowledgeable:
An XON/XOFF protocol is used with the AUXIN de-
vice. When the internal buffer becomes full {usually after 32 KBytes, if
there are no function modules loaded), $COPY sends the control character
Ctr:l-S
(XOFF) via the AUXOUT channel,
After the buffer
contents
have
been written to disk and $COPY is ready to receive new data,
it sends a
Ctrl-Q (XON) character:.
If the serial interface at the transmitter side
is
also
configured
to the XON/XOFF -protocol,
transmission
is
thus
automatically suspended and resumed again.
EOS User's manual
Daeumling & Zimmermann
Page 5B
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