Return to the Sintran homepage Return to your previous page

Norsk Data hardware - ND-5001.4.1.7 - Norsk Data hardware - ND-500


322505 - PCB 5005 - N-500 Memory Management

Description

  • The Memory Management System (MMS 1) in the ND-500/1 CPU.
  • Maintains the physical segment and capability tables.
  • Using 8 pieces of SRAM chip for the MMS tables, 4096 x 1 bit x 8 pieces (total 4 KB).
  • Using 14 pieces of SRAM chip for the MMS tables, 1024 x 4 bits x 14 pieces (total 7 KB).
  • Print: D   ECO: U
  • PCB size 405 x 280 mm, 4 layers
  • Release date xx. xxx. xxxx

Chipset

  • D2147 - SRAM x 8 pieces
  • D2148 - SRAM x 14 pieces
  • SN74154 - Decoders/Demultiplexers x 2 pieces

LEDs

  • LD1 (yellow) - Memory management system on (paging on)

Straps

  • None

Switches

  • None

Connectors

  • (A) Standard ND-500 bus
  • (B) Standard ND-500 bus
  • (C) Standard ND-500 bus
  • (D) Standard ND-500 bus
ND-322505
Component side, PCB version D

ND-322505
Solder side, PCB version D

This page was last updated 27. Jan. 2025
Copyright © Sintran Data
../valid HTML code ../valid CSS code
Mail us