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ND 113 MOS MEMORY, 32 Kw/22 BITS

ND 115 MOS MEMORY, 64 Kw/22 BITS

INTRODUCTION

The ND 113/115 MOS Memory Modules are used as primary storage in the NORD-100 Computer System. ND 113 and ND 115 may be mixed in the same system to provide flexible expansion in steps of 32 Kw/22 bits or 64 Kw/22 bits. ND 113/115 require one slot in the NORD-100 rack.

FEATURES

  • 6 bit Error Correction Code increases data reliability
    • all single bit errors are corrected
    • all double bit errors are reported
  • Modular and flexible design
  • Requires one crate position
  • Lower power requirements
  • Small physical dimensions
  • Internal cycle control/timing
  • Asynchronous operation
  • Internal refresh address register
  • Maintenance test features

Diagram

flowchart TB
    A(NORD-100 Bus BD 0-23) -->|0-23 MPX Address/Data Bus| B(6 bit ECC Generation)
    B -->|22 bit Data/ECC to Memory| C[Memory Address]
    C --> D[Memory Timing/Control and Refresh Network]
    B --> E[32 Kword/22 bit or 64 Kword/22 bit Memory Array]
    A -->|BD 0-21| F[Error Detect and Correction Network]
    F -->|16| G(Data)
    F -->|16| H(Error Code)
    H --> F
    F -->|22 bit Data/ECC from Memory| E
    A -->|16| B
    A -->|Module Module Selection| I[Thumbwheel]
    I --> J[Lower Limit]
    J --> L[Add Module Size]
    L -->|Upper Limit| M[Display]
    I --> N[Module Module Selection]

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Product Description

The ND 113 and ND 115 memory modules are designed according to user requirements, data reliability, high density, and flexibility.

For each 16-bit word, 6 Error Correction Control (ECC) bits are generated. The 6 ECC bits guarantee that single bit errors are corrected and double bit errors are detected. All single bit errors are assigned an error code, making it possible to log all memory failures.

The ND 113 and ND 115 memory modules may be freely used in all address ranges up to 1 Mword. The address range for a particular module is defined either by module crate position if switches are set to 88 or by appropriate setting of thumbwheels.

For minimum interaction with other system parts, the modules contain refresh and memory cycle control logic.

Specifications

Specification Detail
Data format 16 bit data
6 Error Correction Control bits
Memory cycle times:
- Read Access time 320 ns
- Write Access time 180 ns
- Bus Hold time 550 ns
Power requirements +5V, 12V
Stand-by power 15 minutes

Please add 40 ns if Error Correction must be performed.

Contact Information

Norway: NORSK DATA A.S
Jerikovien 20, Box 4 Lindeberg gård
OSLO 10
Tel. 02-391601, Tlx. 18661 nd n

Denmark: NORSK DATA ApS
Overvej 5
2840 HOLTE
Tel. 02-420525, Tlx. 37725 nd dk

West Germany: NORSK DATA DEUTSCHLAND
Abraham-Lincoln-Str. 30
6200 WIESBADEN
Tel. 06121-764220, Tlx. 4186370 noda d

Sweden: ND NORSK DATA AB
Kanalvägen 3, Box 2031
19402 UPPLANDS VASBY
Tel. 0760-86050, Tlx. 13528 nordata s

France: NORSK DATA FRANCE
"Le Brevent", Avenue du Jura
01210 FERNEY-VOLTAIRE
Tel. 050-408576, Tlx. 385653 nordata ferny

U.S.A.: NORSK DATA N.A., Inc.
65, William Street
Wellesley, MASS. 02181
Tel. 0617-237.7945, Tlx. 921740 norsik well

Sweden: ND NORSK DATA AB
Klangfärgsgatan 11, Box 9052
42109 VÄSTRA FRÖLUNDA
Tel. 031-299350

France: NORSK DATA FRANCE
120, Bureaux de la Colline
92213 SAINT-CLOUD-CEDEX
Tel. 01-6023366, Tlx. 201108 nd paris

England: RICHARD NORTON (NORD) Ltd.
NORD House, 17 Balfe Street, King's Cross
LONDON N1 9EB
Tel. 01-2785501, Tlx. 299537 norton g

Note: NORSK DATA reserves the right to change specifications at any time without given notice.