Texas Instruments 990 User Manual page 257

Glossary
Polling
An operation conducted by the polling software on the
FCCCboard that controls the flow of data between stations
in the network. The polling operation scans the secondary
stations on a nonprioritized, roll call basis to determine
if any of the stations require communications services.
Preprocessing
A procedure performed on the operating system
alone program for a secondary staton to
downloading· over the communications line
preprocessor) •
Primary station
or a stand-
forma t i t for
(see download
A Model 990/10 or /12 Computer system with a DXlO operating
system (version 3.4). communications package software and
hardware (FCCC and cable), and input/output devices.
Control of the communications package is maintained at the
primary station.
Remote SCI
Remote SCI provides a
secondary station from
station. The Remote
DXIO SCI command set.
means of interacting with a TX5
a terminal at the DXlO primary
SCI command set is modeled after the
Secondary station
A Model 990/5 Computer system or a remote processing device
that is connected to and communicates with the primary
station via a communications line.
Session Control
The level of software in the communications package
handles all applications
programs~
requests
establishing, operating, and terminating a session.
SID (source identification)
that
for
The network ID assigned to a station or applications program
that sends data to another location in the network.
Source ID
See SID.
Station
A 990 computer system, including all input/output devices
such as a printer or terminal that are locally-connected to
the computer or any other device that can be connected to
the networ k.
Station ID
The network ID assigned to the LLM board in the secondary
station.
2270526-9701
Glossary-5