COMMENT ⊗   VALID 00007 PAGES
C REC  PAGE   DESCRIPTION
C00001 00001
C00002 00002	Introduction
C00003 00003	Use of DM Hardware
C00005 00004	Use of DM Software
C00019 00005	Use of DMs via TIPs
C00025 00006	Use of DMs from TENEX/TOPS20 Hosts
C00027 00007	Use of DMs from ITS Hosts
C00030 ENDMK
C⊗;
Introduction


This file, DM.ME[UP,DOC], lists some  facts and procedures of interest  to
users of the Datamedia  Elite 2500A display  terminal equipped with  SUMEX
keyboard (hereafter abbreviated "DM").
Use of DM Hardware


When using terminal with 300 baud modem:

(1) Connect pins 2, 3, and 7 of the DM LINE connector to pins 2, 3, and 7,
respectively, of the modem's TERMINAL connector.

(2) Switch the terminal's speed selector to 300, and dial in.

(3) To disconnect, hang up the phone.


When using terminal with internal 1200/150 modem:

(1) Connect stub cable coming out of back of terminal into the  terminal's
LINE connector.

(2) Plug white cable into jack at back of terminal.

(3) If your phone doesn't have a jack, remove the cover of the little  box
where the wire goes into the  wall and replace with the adapter  provided,
creating a phone jack.

(4) Plug other end of white cable into your phone jack.

(5) If the phone has a  plug, plug it into the  back of the plug you  just
inserted.

(6) Switch the terminal's speed selector to SEL.

(7) Push the small switch next to the speed selector to the left.

(8) Now dial SU-AI or AMES-TIP (or whatever).  When the modem answers with
a tone, switch the small switch to the right and hang up the phone.

(9) To disconnect, push the break key  on the terminal for a few  seconds,
and then push the small switch to the left and the line will be released.
Use of DM Software


[Note:  If you have trouble with  typeout at any time, especially if  tabs
in the typeout don't seem  to work, type [BREAK] P  (see below for how  to
type this), which will  clear and refresh  your screen, including  setting
your DM's tab stops.  If your DM doesn't have tab stops, type the  monitor
command TTY NO TABS  and then type  [BREAK] P.  If  you have trouble  with
your line editor, type [ESC] R.]

DM terminals are considered full display  terminals by the system, and  as
such they have  virtually all  the capabilities  possessed by  DD and  III
displays except (1) keyboard and screen mapping, (2) audio switch control,
and (3) vector displaying.  In  particular, the line editor, the  wholine,
and the full Stanford AI Lab character set with CONTROL and META bits  are
available on DMs, although a few  Stanford characters must be quoted  (see
below) in order to be input.

To have a list of DM keyboard commands printed on the XGP, type HELP DMKEY
to the monitor and follow instructions; this  can only be done on a DD  or
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People who wish to use DMs on ITS should first declare their terminal type
to ITS via

	:tctyp Datamedia

If using a baud  rate greater than  1200, the user  should also include  a
PADCR value of 1 to 4 as necessary for the user's baud rate.

All of the ITS display facilities are  now available to the user.  A  user
can then use ITS user TELNET's DM simulator to connect to SU-AI.  The most
straightforward way of doing this  is to run TELNET  as SA or SAIL,  which
will set TELNET  up in  magic mode automatically,  saving the  user a  few
commands that otherwise would be  necessary (including telling SU-AI  that
you are a DM!).

There is no way currently to get EDIT sent down to SU-AI, as there are  no
real DMs locally  at Cambridge  where this can  be tested  at the  present
time.

A very  desirable alternative  is to  use one  of the  TVs there.   TELNET
checks to  see if  the terminal  has a  bucky bit  keyboard and  the  SAIL
graphics set in addition to insert/delete mode (these are options not  all
ITS displays may have; i/d  mode is required to use  any of the TELNET  DM
stuff), and if the terminal fits all of these requirements, TELNET  enters
a special mode in which all the TV keys are mapped into their DM bucky bit
protocol equivalents.  ITS ↔ SU-AI  mappings are done invisibly such  that
the Knight keyboard appears  to be a funny  Stanford keyboard.  Thus,  the
user at an ITS TV can be, more or less, a SU-AI TV.