Aucbvax.1514
fa.info-terms
utzoo!duke!decvax!ucbvax!ARPAVAX.mark@Berkeley
Wed Jun  3 20:45:53 1981
tvi 950
I actually have one in front of me right now, having borrowed it
to termcap ize it for a week or so.

It doesn't need any padding for ins/del line at 1200 baud, and it
has been claimed (by a tvi engineer, I am told) not to need any at all.

It has the same awful keyboard the other tvi's have.  It also has the
"magic cookie" glitch for standout modes.  Other braindamage:

The "edit group" keys, which include the arrow keys, ins/del line/char
keys, send, print, tab, backspace, clear screen, line erase, page erase,
and home, as a group can be made to work in local or to transmit the
code instead.  Most people would like tab and backspace to transmit the
code all the time, and send, print, etc to work in local all the time.
Too bad - you wanna backspace and tab key, you give up send and print.
I haven't had much luck with send anyway, it seems to hang the terminal
(after it's done sending, any char I type just beeps).

It has a 25th "user line" which can support the h19sys program to keep
status displayed there.  But you just load 80 bytes into it, if you try
escape sequences (like standout, or even tab) they display as control
characters.  So h19sys has to be left justified in unstandout mode.

There is a status line you can have instead of the user line, which shows
a menu (the terminal seems to have copied some things, like the looks of
the monitor, and setup mode, from the vt100).  Hitting setup moves the
cursor to the status line so you can see what you're doing.  But if you
have the user line up instead, you have to setup blindly, since it still
display the user line instead of the status line.

Any attempt to change the page size (you can have 4 24 line pages, 2 48
line pages, or 1 96 line page, if you have all the optional extra memory)
clears the screen.  To get cursor addressing to work right (it's memory
relative, not screen relative) you have to be in a 24 line page.  So to
use all of memory and also vi, you have to clear the screen upon exit
from vi, instead of leaving you with context like the concept.

It has a no scroll key that buffers and sends ^S for a quick stop.
Hitting it again sends ^Q and goes again.  Trouble is, the key is right
above escape, so if you hit it by accident, you freeze the terminal,
and you have to think to hit no scroll, since other characters won't affect
the display.

The keyboard is detachable, the monitor is pretty good.  There are lots of
options you can set to whatever mode you like.  There are 11 function keys
you can program with up to 256 bytes total (you can also program the 11
shifted function keys) but you can't program any of the other keys.

All in all, I think the h19 is a better terminal for less money.
However, you MIT types will be interested to know that it is possible
to turn off the xon/xoff handshaking.

       Mark



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