IBM 3270 User Manual page 51

field. See display field.
field attribute. A control character stored in the
character buffer in the first character position of a field.
For those devices supporting the 3270 data stream, a
field attribute defines protected/unprotected,
alphanumeric/numeric, detectabie/nondetectabie,
dispiay/nondisplay, intensity, and modified data tag
(MDT).
file.
unit.
A named set of records stored or processed as a
fixed disk.
I drive.
A rigid magnetic disk used in a fixed disk
frame. (1) The portion of a tape, on a line
perpendicular to the reference edge, on which binary
characters can be written or read simultaneously.
(2) A housing for machine elements. (3) The hardware
support structure, covers, and all electrical parts
mounted therein that are packaged as one entity for
shipping. (4) A formatted display. See display frame.
multidrop (network). A network configuration in which
there are one or more intermediate nodes on the path
between a central node and an endpoint node.
N
native mode. A 3179 or 3180 operational mode that
uses the full capabilities of those models' display and
keyboard.
network. (1) An arrangement of nodes and connecting
branches. Connections are made between data
stations. (2) A configuration of data processing
devices and software connected for information
interchange.
operator information area (OIA). The area below the
line near the bottom of the display area where graphics
and alphanumeric characters are displayed to define
the status of the terminal or the system to the operator.
I get. in 3174 central site customizing, to select the type
! of data you want and store it in working copy.
parameter. (1) A variable that is given a constant
value for a specified application and that may denote
the application. (2) An item in a menu for which the
user specifies a value or for which the system provides
a value when the menu is interpreted. (3) Data passed
between programs or procedures.
local. Pertaining to a device accessed directly without
use of a telecommunication line. Synonym for
channel-attached. Contrast with remote.
location. With reference to a 3174, a place within the
3174 chassis where a particular card or adapter is
inserted.
protected field. (1) In word processing, preset data or
an area that cannot be changed or overridden by an
operator without altering the program. (2) On a display
device, a display field in which a user cannot enter,
modify, or erase data. Contrast with unprotected field.
put. In 3174 central site customizing, to store data
from the working copy into a library member.
M
main storage. Program-addressable storage from
which instructions and other data can be loaded
directly into registers for subsequent processing.
memory. Program-addressable storage from which
instructions and other data can be loaded directly into
registers for subsequent execution or processing.
Synonymous with main storage.
microcode. (1) One or more microinstructions. (2) A
code, representing the instructions of an instruction
set, that is implemented in a part of storage that is not
program-addressable. (3) To design, write, and also to
test one or more microinstructions.
remote. Pertaining to a system, program, or device
that is accessed through a telecommunication line.
request for price quotation (RPQ). An alteration or
addition to the functional capabilities that the controller
provides.
ring interface adapter. A device that assumes the
basic data transmission functions of node, such as
frame recognition, address decoding, error checking,
buffering of frames, fault detection, and, in Token-Ring
Networks, token generation.
ring network. A network configuration where a series
of attaching devices are connected by unidirectional
transmission links to form a closed path.
Glossary X-5