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Section C:
Utility Programs
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•
$DEVICE
•
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C.7. $DEVICE- Definitions of External Devices
This
program lets you configure your CRT screen,
keyboard and
printer
environment.
It offers various facilities for the different
interfaces
and
assigns
physical
devices to the five logical
devices
which
are
defined within
EOS.
Your HZ-35111111 has a number of physical devices built in, which are listed
by $DEVICE in the left column of its initial menu. The devices are:
SCREEN
-
the CRT screen
KEYBD
- the keyboard
RS232
-
the serial interface
CENTRO
- the parallel Centronics interface
CE332P
-
the parallel interface for the CE-332P printer
GRAPH
- the graphics interpreter
DUMMY
-
a
dummy device which will accept any kind
of
wise) undesired output. On input, DUMMY returns
The second column indicates the I/0 modes of the devices:
input
output
i/o
- Input device
- Output device
- Input/Output device
(other-
Ctrl-Z.
The contents of the third column can be changed by you.
Its first three
lines can be selected by means of the cursor keys.
When you select
one
of
them and press ENTER,
you will see that the text changes each time,
offering you another option for that device.
Following options are
at
your disposal.
SCREEN: You
may choose between the standard ASCII character
set
or
the German character set, including umlauts. This feature is,
however
only
available
together with a
special
character
gernerator ROM which is available from SHARP.
KEYBD:
Select between upper case and lower case mode.
Normally, you
would
write
lower case letters and press the SHIFT
key
to
obtain
upper case letters.
You may invert this by means
of
this option, e.g. for entering programs.
RS232:
Here
you may select from various transfer speeds and
proto-
cols. The protocols CTS and XON/XOFF are available.
EOS User's manual
Daeumling & Zimmermann
Page 64
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