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10 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Operator Manual for the RCA CDS II CDP18S005
Initial Operation
,
CDS Hookups
Two I/O data terminal cables are supplied with the
Development System - one for terminals using a 20-
mA loop interface, the other for an EIA RS232C data
terminal. Each cable with
its
terminal board con-
nection is labeled. To connect the data terminal,
selei':'t the proper cable and plug its receptacle labeled
"fl"
into the appropriate connector mounted directly
on the accessible end of the terminal board, as shown
in Fig. 1. For a list of terminal interface cables and
their functions, refer to Appendix
J.
MOUNTED I/O
TYPEWRITER
CONNECTORS
CABLE
END
RECEPTACLE
CABLE
25-PIN DELTA
CONNECTOR
LABELED
"
EIA
"
LABELED
tl
TTy
ll
END
CONNECT OR
MATING EIA
CONNECTOR
-0
-9
TERMINAL PLUG -IN
MODULE (SLOT" 14)
WHITE PLASTIC
MOLEX CONNECTOR
WHITE PLASTIC
MOLEX JACK INSIDE
TELETYPE TERMINAL
IN POSITION
"2"
(J2)
92
CS
- 28 21
0 RI
Fig. 1 - Cable connection for I/O data terminals.
The two connectors on the terminal board are
labeled appropriately. The connector on the other end
of the cable plugs into the terminal. For a Teletype
terminal, remove its cover and plug the cable into
connector position 2 (J2) in the array of white plastic
Molex connectors located in the back of the unit. For
an EIA terminal, plug the EIA connector on the cable
into the receptacle on the back of the data terminal.
Fig. 1 shows these connections.
When the Silent 700 terminal is used, the cable
supplied with that device should be connected to the
CDS via the EIA cable.
Put the terminal in the Line mode, select the ap-
pr-;;pa~te baud rate and set for full-duplex operation
before attempting to use any terminal.
Appendix B gives instructions for converting a
TTY from half- to full-duplex operation. The in-
terface is a 20-mA current loop. Make necessary
changes per Appendix B to convert a TTY to 20-mA
operation. If a TTY is to be used with the assembler
program, the remote reader control circuit should be
installed in accordance with the instructions in
Appendix C. Once installed, its switch should be set
in the MANUAL position before continuing.
Install the power cable and switch power on. Press
RESET followed by R UNU. This sequence will
cause the RUN light to go ON and the system is .now
operating with UT20 in control.
This program begins by reading the first keyboard
input character to
define
for itself the terminal
character rate and whether it should "echo" typed
information to the data terminal printer. If
the
terminal is operating in the full-duplex mode, the user
should begin by pressing the RETURN key on the
keyboard. For the half-duplex mode, the user should
press the LINE FEED key instead. The system then
responds with the prompt character
(*).
It now
"knows" the essential characteristics of the I
/
O data
terminal. Reaching this stage verifies that most of
the
hardware is operating properly.
CDS Checkout Program
Even with little or no knowledge of the COS MAC
command repertoire, the user can further verify
proper system operation by loading, from the ter-
minal, an elementary test program. For example, a
•
simple time-out loop can be run in which the RUN
~
light goes off after a specific elapsed time from the
initiation of execution.
Each line of user keyboard input is terminated by a
depression of the RETURN key on the keyboard
The test time-out program can be loaded into memory
by typing in
! MO L'lF8FFB1219191913A0300(CR)
The system will reply with the prompt character. One
can verify proper loading by entering
?MOL'l A(CR)
The system will print the characters just entered
(after the memory location addressed, "0000" in this
case) and will return the prompt character again. The
time-out program can then be run either by entering
$PO(CR)
or by depressing RESET followed by RUN. In either
case, the RUN indicator should go off after ap-
proximately 2.6 seconds. This step establishes that
the read-write memory (RAM) is operational.
• In this Manual, (CR) at
the
end
o
f an example of a user
keybo
~rd
input denotes the terminating
carriage
RETURN. Spaces
man
input line will be denoted by blanks
in
the example or, for
add,-
tional emphasis, by the symbol
6.
•
i
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