HP 3000 Manuals HP 3000 Manuals
Appendix G Glossary A American Standard Code for Information Exchange (ASCII): The standard method of representing character data (seven data bits plus one bit that is sometimes used for parity checking). This method was established by the American National Standards Institute (ANSI) to achieve compatibility between data devices when they are interchanging information. ASCII: See also American Standard Code for Information Interchange. B batch mode: This mode is initiated when streamed jobs submit RJE commands and data to MPE for processing. batch processing: A technique of data processing in which jobs are collected and grouped before processing. Data is collected over a period of time, and then submitted to a host computer. A job, which is submitted as a single entity, can consist of multiple commands, such as program compilation and execution, file manipulation, or utility functions. Once submitted, no further interaction between the user and the job is necessary. binary data: A representation of numbers, alphabetic characters, and symbols in digital computers. Binary is the base-two numbering system that uses only two digits, 0s and 1s, to express numeric qualities. binary synchronous communication (BSC): A data link protocol using binary synchronous line discipline. This protocol uses a standardized set of control characters and control character sequences for synchronous transmission of binary-coded data between stations. Synchronization of characters is controlled by timing signals generated at the sending and receiving stations. bisync: See also binary synchronous communication. blank field compression: Reducing a string of blank characters to a two character sequence. For RJE, this two character sequence consists of an IGS or GS control character followed by a count specifying the number of blanks being compressed. BSC: See also binary synchronous communication. C command file: An unnumbered file that contains RJE subsystem commands. This file usually cannot contain input data unless it has also been specified as the input file when RJE is invoked. Commands are read from the command file when RJE is in command mode. Communications Subsystem: A set of intrinsics that RJE uses to communicate with the INP card. Errors that occur during the operation of the INP card are reported as CS errors. compression: The process of translating data into a more compact form so that it can be transmitted more economically or efficiently. See also blank field compression. CS: See also Communications Subsystem. CS/3000 trace facility: A utility that provides a record of the line actions, CS states, and events that occur during RJE operation, in the form of trace entries. Once invoked for a particular communications line, the CS/3000 trace facility records line activity until either RJE terminates or a new RJLINE command is issued. D data set: In IBM terminology, any file. dedicated: Refers to a device or resource that is not shared among users. device class: A collection of devices. The MPE operating system supports a means of maintaining collections of devices. E Extended Binary-Coded Decimal Interchange Code (EBCDIC): An eight-bit code that is a extension of binary-coded decimal (BCD) notation. EBCDIC can repreent up to 256 different characters. EBCDIC: See also Extended Binary-Coded Decimal Interchange Code. end-of-transmission character: A transmission control character used to indicate the conclusion of a transmission, which may have included one or more texts and any associated message headings. EOT: See also end-of-transmission character. F formal file designator: The name that commonly appears on the left side of a file equation for the purpose of redirecting input/output to or from a file or device, or defining the characteristics of a file or device. This is the name that processes will refer to rather than to the actual file or device. H HASP workstation: HASP (Houston Automatic Spooling Program) is the acronym for an early IBM job entry subsystem. HASP later became a basis for the JES2 job entry subsystem. JES2 refers to devices such as IBM 2780 or IBM 3780 remote workstations as HASP workstations. host system: In a network, the computer that primarily provides services such as computation, database access, or special programs or programming languages to other users on the network. I IBM 2780 Data Transmission Terminal: An IBM 2780 Data Transmission Terminal is a workstation that consists of a control unit, a line printer, a card reader, and optionally a card punch. It is also referred to as a Remote Batch Workstation or Remote Batch Terminal. These workstations are used to send jobs and data to a host system and receive data from that system. IBM 3780 Data Communication Terminal: An IBM 3780 Data Communication Terminal is a workstation that consists of a control unit, a line printer, a card reader, and optionally a card punch. It is also referred to as a Remote Batch Workstation or a Remote Batch Terminal. These workstations are used to send jobs and data to a host system and receive data from that system. INP: See also Intelligent Network Processor. input file: A file or device containing data to be transmitted to a remote processor during input mode. Intelligent Network Processor: A communications interface card used with HP 3000 systems operating under the MPE V operating system. It offloads the CPU of most of the communications overhead including protocol handling, data buffering, error checking, and responses to polling. interactive mode: The mode is initiated when RJE is started from the keyboard by one of the following MPE commands :RJE or :RUN RJE.PUB.SYS. In this mode, the user has the capability of entering RJE commands from the keyboard. interrupt mode: The mode is initiated when in programmatic control and a message file has been specified with the RJLINE parameter, and an RJOUT command with INTERRUPT=YES has been issued. In interrupt mode, RJE will execute command files that have been specified to the message file. J JES2: A common IBM job entry subsystem used under the MVS operating system. JES3: An IBM job entry subsystem used under the MVS operating system that's an extension of the Asymmetric Multiprocessing System (ASP) program. JES3, which supports multiprocessing, receives jobs into the system and processes all output produced by a job. job: The basic unit of batch work on an IBM system. A job consists of a series of job control language statements. In addition to these statements, a job can include programs and input data. job entry subsystem (JES): A system facility for spooling, job queuing, and managing I/O, such as JES2, JES3, POWER, or RSCS. L ldev: See also logical device. leased line: See also nonswitched line. linkname: The name assigned to a communications line or device. link statement A statement in the configuration file that defines the name and default attributes of the specified link. list file: A file or device that receives list output during output mode. The #RJOUT and #RJLIST commands will transmit routed list output or unrouted output to the list file. local: A device or system that is connected to other devices or systems by a data link. logical device (ldev): A disk file, a set of disk files, or a physical device associated with a data stream between a host and a remote system. An HP logical device is identified either by a number or by a device class name. M message file: A type of MPE file that allows destructive reads and first-in-first-out access to records. RJE uses the message file for inter-process communication with users or programs during programmatic mode. MPE: See Multiprogramming Executive. Multiprogramming Executive: The Hewlett-Packard operating system for the Series 3000 computer. MPE consists of programs that handle exchanges between HP terminals, printers, and executing programs and the internal HP 3000 Communications Software. N nonswitched line: A telecommunications line in which connections do not have to be established by dialing. nontransparent mode: A mode of binary synchronous transmission in which all control characters are treated as control characters (that is, not treated as text). O output buffer: An area in memory that RJE uses to store data read from the input device. This buffer is also called the line buffer. This buffer is then written to the communications device (INP). With IBM 2780 emulation, the output buffer is 400 bytes. With 3780 emulation, the output buffer is 512 bytes. P POWER: Priority Output Writer, Execution processors, and input Readers. A common IBM subsystem used to improve the input and output of jobs to the VSE operating system environment. programmatic control: Regarding RJE/V, refers to the function that allows users to run the RJE/V subsystem so that application programs running concurrently with the subsystem may submit command files to it. punch file: A file or device that receives punch output during output mode. The #RJOUT command will transmit routed punch output to a punch file. The #RJPUNCH command will transmit routed punch output or other output to a punch file. R remote: Devices or systems that are connected to another device or system by a data link. Remote Job Entry (RJE): A Hewlett Packard application that emulates the major functions of an IBM 2780 Data Transmission Terminal or an IBM 3780 Data Communication Terminal. RJE can transmit batch jobs to and receive output from a host processor that can support standard IBM 2780/3780 devices. It can also exchange files between an HP 3000 and many other processors that emulate standard IBM 2780/3780 devices. Remote Spooling Communications Subsystem (RSCS): The component of VM/370 that transfers spool files between VM/370 users, remote stations, and remote and local batch systems over HASP-compatible telecommunications facilities. routed output: Data sets transmitted from a remote processor where each output record (IBM 2780) or each data set (IBM 3780) is preceded by a component select code that specifies printed or punched output. RJE/V: See Remote Job Entry. RJE/XL: See Remote Job Entry. RSCS: See also Remote Spooling Communications Subsystem. S streamed job: A batch job executed by using the MPE STREAM command. switched line: A telecommunications line in which the connection is established by dialing. T trace facility: See CS/3000 trace facility. transparent mode: A mode of binary synchronous text transmission in which data, including normally restricted data link control characters, are transmitted only as specific bit patterns. Control characters that are intended to be effective are preceded by a DLE character. truncate: Suppressing blanks from the end of input record. Such records are ended by RJE with a control character. truncated records: See also truncate. U User Subprogram Library (USL) file: A file containing the object code from a compilation. For RJE, user-written procedures are compiled into a USL and then placed into an SL (segmented library) with the Segmenter program. USL file: See also User Subprogram Library file. X X.21: The protocol that defines the physical interface between a DTE and a DCE of a public data network where the access to the network is made over synchronous digital lines.