Summary of
Changes
for
the
Fourth Edition
This book
has
been
revised to include
the
following
changes
and
enhancements:
• This booksupports
IBM
3174Configuration Support B Release 2.
• This bookhas been reorganized to enhance the retrievability ofthe material.
Specifically,
information
on
3270
terminals
and
ASCII
terminals
is
now
covered
in
separate
chapters.
• Two editing functions have
been
added:
-
Type
Ahead
allows
you
to
continue
typing
while
the host
computer
is
busy
processing
keystrokes.
This
helps
you
toenter
keystrokes
faster.
— Youcan now use a sequence of keys to turn Enhanced Null/Space
Processing
on
and
off.
Both of
these
functions
are
described in detail in Chapter 1, "Getting Started.
• Additional
ASCII
terminals can be used to communicate with
IBM
or
ASCII
hosts.
•
Control
codes and escape sequences have been removed
from
this bookand
are now contained in3174Asynchronous EmulationAdapter Description and
Reference.
• In this release, 3270terminals can now be used as Data General Dasher
D210**
or
DEC
VT220"
terminals.
•
Appendix
A,
"Terminal
Keyboard
Maps,"
contains
additional
keyboard
maps.
•
Appendix
B,
"Using
a
Modem
andan
ASCII
Terminal
With
the
3174
Asynchronous
Emulation
Adapter,"
contains
switch
settings
for
additional
terminals.
Technical
changestothetextand
illustrations
are
indicated
by
vertical
linesinthe
left margin next to
the
text or illustration.
© Copyright
IBM
Corp. 1987.1990
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