Appendix B. Terminal Remote Control (Trc); Introduction; System Variations; System Configuration Between Programmer And Terminal Remote Control - Data I/O 298 Manual

APPENDIX B
TERMINAL REMOTE CONTROL (TRC)
8.1 INTRODUCTION
This section summarizes the commands available for data
transfer, editing, or review via Terminal Remote Control
(TRC) for the 298 Programmer.
Figure B-1 shows the link between the 298 programmer
and the remote system. When in Terminal Remote Control,
all data manipulations are controlled remotely, either by a
computer, manual data entry, or by a data transferring
device, such as a tape reader. Existing RAM data is edited
by any of the editing commands or by the various
commands invoked while the programmer is in the Memory
Mode. Edited RAM data can then be programmed into a
device.
Data blocks transferred between the programmer and a
device are in binary. Data blocks transferred between the
remote system and the programmer are coded in a format
specified by the operator (see the appendix A for
description of the various data translation formats).
The programmer, under control of the terminal, executes
the commands entered at the terminai and returns the
prompt character
(>)
to the terminal upon successful
execution of a command. When in the memory mode the
current RAM address location and the data at that location
are displayed.
TELETYPE
TERMINAL
CURRENT LOOP DATA LINK
PAP~~T;APE """~-------~~
READER
AND PUNCH
8.2 SYSTEM VARIATIONS
The TRC system is not recommended for newly designed
computer controlled programming systems; whereas, the
CRC remote system is recommended (see subsection
3.9.1). However, since TRC has been widely used in the
past with the System 19, it has been adapted to operate
with the 298. The few differences in operation between the
System 19 and the Model 298 TRC are listed below;
however, these should not require any significant changes
in existing TRC programming system software and drivers.
1. All memory address related commands will take longer
with 298 because it allows for up to 64k addressing
which requires more software execution because of
page addressing. These commands include all the
major commands: "PG" (Program), "LD" (Load),
"VF" (Verify), "DI" (Data Input), "DC" (Data
Compare), and "DO" (Data Output) as well as less
significant commands such as "SC" (Sumcheck),
"CA" (Clear All RAM), "CM" (Complement Memory),
"SN" (Swap Nibbles), and "SD" (Split RAM Data).
2. Memory mode commands which manipulate or search
all 64k bytes of memory will require at least four times
more time to perform their operation. These
commands include: I (Insert Data), D (Delete Data), U
(Fill Unprogrammed Data), S (Search Data), 8
(Substitute DataL
Programmer
- - - - - - - - - - -1
PROGRAMMING ELECTRONICS
SOCKET ADAPTER
INPUT LOAD
DEVICE
REMOTE
CONTROL
OR
SERIAL PORT
i....;.;.:IN;...;:PU:...:..T___;~ :~~~S~M
._'-V_E_Rl_FY--i
B
COMPARE MEMORY
RS232 DATA LINK OUTPUT
PROGRAM
TERMINAL - - - - - - - - - ...______..
,
__
- - - -
-
-
- - - - -
-
- -·
-
- -
-
-
Figure B-1. System Configuration Between Programmer and Terminal Remote Control
8-1
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