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ND 10069 ND IDT CDC 200 Multidrop Emulator

INTRODUCTION

The Remote Job Entry approach to data processing offers several significant advantages. Without having to incur large capital outlays, an RJE terminal user may share the processing power of a host mainframe computer and gain access to centrally stored programs and data.

The ND IDT CDC 200 Multidrop Emulator is specifically designed for remote job entry to CDC CYBER 6000 series systems, and provides a range of options that afford the user the freedom to configure his RJE terminal in accordance with his particular applications and functional requirements. For instance, it is possible to perform such typical operations as data entry and program editing locally at the terminal site, while file updating routines and compilations are submitted to the host mainframe.
The ND 10069 gives the users full interactive access to CDC 6000 computers in addition to the usual batch input and output features. Up to 11 interactive terminals can be connected.

With several years of experience in the field, NORSK DATA can offer RJE terminals for all major makes of mainframes, from simple core-only configurations to multiple remote operation systems with elaborate spooling facilities.

FEATURES

  • Space compression expansion can reduce transmission time by up to 50 percent and motivate the use of faster peripherals.
  • Full Duplex transmission
  • Transmission rates from 1200 to 9600 bauds
  • Communication via private lines
  • Comprehensive repertoire of both local and remote commands
  • Up to 11 interactive terminals may have simultaneous access to a program system residing in a central site (host) computer
  • The user may switch between local background and CDC 200 processing

PRODUCT DESCRIPTION

The ND IDT CDC 200 Multidrop Emulator is a software system running on NORD-10S or ND-100 under the SINTRAN III/VS operating system with spooling of I/O files, alternatively available as a core-only system running under SINTRAN III RT.

The software package consists of a set of asynchronous real-time programs, each assigned a specific task. By designing a high degree of modularity into the software, bottlenecks related to slow peripherals are prevented from occurring in the system.

The ND IDT CDC 200 Multidrop Emulator enables the NORD-10S or ND-100 computer to communicate with Control Data Corporation CYBER 6000 series host computer systems and handles such functions as spooling, job priority scheduling and operation of peripheral equipment.

Standard peripherals consist of card reader, line printer and operator console, however, these may be substituted by alternative ND devices. The SINTRAN III VS also supports spooling of I/O files on disk.

COMMAND SUMMARY

The command repertoire for the ND IDT CDC 200 Multidrop Emulator has been developed with special regards to the following objectives:

  • to simplify operation of the terminal
  • to ensure a continuous job flow
  • to improve the operator's overview
  • high throughput

All commands, such as requests for status information, device assignments etc. can be entered via the operator console. Likewise, messages and acknowledgements from the system are also routed to the console, providing smooth and uninterrupted operation of the terminal and boosting terminal throughput. Consequently, the operator is relieved from such time-consuming chores as card punching and halting of input and output streams.

10069-A1-3000-0881

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Commands

The following list contains a few sample commands available for the master terminal. These are the same as for the ND 10026 ND IDT CDC 200 User:

Local Commands

  • :CO
    Copy from current input unit to current output unit
  • :XXXIN
    Change input unit number to octal value XXX
  • :XXXUT
    Change output unit number to octal value XXX
  • :AB
    Abort terminal - release peripheral units and close files

Remote Commands

  • LOGIN
    Establish contact with host computer
  • FILES
    List all files
  • Q
    Display number of jobs in different queues
  • DROP (jobname)
    Drop a job from input, execute or dependency queue
  • M
    Message - transmit message to central site operator

In addition to the local and remote IDT 200 User commands, a time-sharing user may submit jobs for batch processing and manipulate his local files by the following SINTRAN III commands:

  • APPEND-REMOTE-QUEUE
    Permits the user to submit a job to the host computer
  • LIST-REMOTE-QUEUE
    Lists the job entries in the input queue to the host computer
  • DELETE-REMOTE-QUEUE-ENTRY
    Deletes a job from the remote batch queue before execution has started

Once the terminal has been logged on to the host computer, it remains in this mode until the operator decides to terminate the session by issuing the LOGOUT command.

Requirements

The ND 10069 ND IDT CDC 200 Multidrop Emulator consists of:

  • IDT-2192 IDT 200 Multidrop Program size: 10-14 Kw (depending on number of terminals)
  • IDT-2175 IDT DEBUG
  • IDT-2194 CYBER

Prerequisite: ND 10048.

References

  • SINTRAN III User's Guide - ND-60.050
  • ND IDT 200 USER - ND-60.061