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From: rf@wu1.UUCP
Newsgroups: net.info-terms
Subject: Ann Arbor Ambassador termcap man page
Message-ID: <205@wu1.UUCP>
Date: Tue, 13-Dec-83 16:13:58 EST
Article-I.D.: wu1.205
Posted: Tue Dec 13 16:13:58 1983
Date-Received: Sat, 17-Dec-83 02:29:45 EST
Organization: Western Union Telegraph, Mahwah, NJ
Lines: 223

.TH AAA 7 "terminal"
.ad b
.SH NAME
aaa - description of Ann Arbor Ambassador terminals

.SH SYNOPSIS
.TP 10
aaa30
Ann Arbor Ambassador - 30-line screen
.TP
aaa48
Ann Arbor Ambassador - 48-line screen
.TP
aaa
Ann Arbor Ambassador template description

.SH DESCRIPTION

.PP
The Ann Arbor Ambassador is a video terminal with the following
features:
.RS
.IP - 2
15 inch green screen
.IP -
detached keyboard
.IP -
sufficient memory to store sixty lines of eighty characters each
.IP -
display of eighteen to sixty lines on the screen
.IP -
bold, blink, blank, reverse-video, and underscore
.IP -
48 programmable keys including the traditional arrow
keys, twelve keys labeled pf1 through pf12, and a red reset key
.IP -
block mode
.IP -
console mode setting - no switches
.IP -
ANSI X3.64 cursor control sequences
with additions to support screen size changes and keyboard programming.
.RE
.PP
.I Aaa48
sets the terminal to use 60 lines of screen memory while displaying 48.
.I Aaa30
sets the terminal to use 60 lines of screen memory while displaying 30.
Lines which have scrolled off the screen but are still stored in the
screen memory may be called back using the Ambassador's "move up" and
"move down" keys.
When the screen-oriented text editor
.I vi
is invoked,
the screen memory is shrunken to match the
displayed memory, since
.I vi
will not otherwise work.
When
.I vi
exits, the screen memory is expanded to 60 lines again.
.PP
The Ambassador has more function keys than the file of terminal
capabilities,
.IR termcap ,
can describe.
Which keys are used are set out in this table:
.RS
.TP 28
termcap description
terminal key
.TP
===================
============
.TP
arrow and home keys
arrow and home keys
.TP
function key 0
reset
.TP
function keys 1-9
pf1 through pf9
.TP
erase, edit, delete, insert
erase, edit, delete, insert
.TP
none
pf10 through pf12
.TP
none
shift pf1 through pf12
.TP
none
print, send (if you have a local printer, shift-print
will start and stop it)
.TP
none
t-clr, t-set, ssa, esa
.RE
.PP
Keys not described in
.I termcap
sometimes have unexpected side effects in
.IR vi .
When this happens, damage to your file may be repaired by first hitting
"esc" to complete the spurious command, waiting for at least one second, and
then hitting "u" to undo the spurious command.
.PP
The terminal can underline.
Standout mode is reverse video.
.PP
Aaa is the template entry to which all of the others refer.
.PP
When using an Ambassador with Unix, the "start transmission" character
should be set to control-q and the "stop transmission" character
should be set to control-s.
The "-start ^q" and "-stop ^s" options of the
.I stty
terminal setup program may be used
to do this.
The following terminal setup options are suggested:
.bp
.RS
.IP off
Margin bell
.IP off
Return key CRLF
.IP on
Function key initialize
.IP on
Send/receive mode
.IP off
Half duplex
.IP off
Keyboard action mode
.IP on
Auto XON/XOFF
.IP 17
XON code
.IP 19
XOFF code
.IP off
Invisible cursor
.IP off
Wrap backward (to prevent back space from carrying you to the
previous line)
.IP on
Destructive backspace (to erase characters you backspace over)
.IP off
Scroll-page (scroll mode)
.IP on
VT52/ANSI (ANSI mode)
.RE
.SH FILES
.nf
/etc/termcap
/usr/lib/tabset/aaa
.fi
.SH SEE ALSO

aag(7), aag100(7), ex(1), stty(1), termcap(5), vi(1)
.br
Ann Arbor Terminals User Guide

.SH AUTHOR

Randolph Fritz (Western Union Telegraph, 3 February 1983)

.SH BUGS
.PP
.I Vi
and
.I ex
use the cursor-addressing commands before sending the
.I vi
startup command string to the terminal - the
.I termcap
"vs" string.
This causes funny things to happen on the screen
since the last line of the Ambassador's memory is not the same
as the last line displayed on the screen until the "vs" command string
has been sent.
.PP
When the computer's input buffer overflows,
.I vi
often confuses arrow
key depressions with other commands.
When this happens to left and right arrow key depressions, it is particularly
disconcerting, since such are often converted into "delete rest of
line" commands.
The resulting damage may be repaired by first hitting "esc" to
complete the spurious command, waiting for at least one second, and
then hitting "u" to undo the spurious command.
.PP
The
.I aaa
template
.I termcap
entry gives the "as" (alternate character set start)
and "ae" (alternate character set end) items.
These are only valid for Ambassadors with DEC mode.
.PP
The
.I termcap
entries all have the same two-letter type code (Mc) and will
not work on Unix v6.
.PP
These
.I termcap
entries do not completely describe the Ambassador.
Since only ten function keys are allowed, the pf10, pf11, pf12, print, and
send keys must be omitted, as are all the shift pf keys and t-clr,
t-set, ssa, and esa.
The
.I termcap
entries also cannot indicate which keyboard keys are programmable,
nor give any clue to the terminal commands which can program them.
Insert character, delete character, and certain other functions may be
given repeat counts; this cannot be described.
Finally, the terminal may store more lines than it displays.
This is very useful for text editing programs but cannot be described in
.I termcap.