125 (NORD-1 card)

From NDWiki
Revision as of 01:44, 11 July 2016 by Gandalf (talk | contribs) (Initial page)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

125 Shift counter, is a card that is used in the NORD-1 CPU.

Component side.
Solder side.

This counter keeps track of the number of bits to shift in a shift instruction.

Introduction

The card is made in the standard NORD-1 card format.

CPU model Crate position
29 D01
35 D01

The logic diagram is documented in drawing 2A25.[1]

Switches and indicators

There are no switches or indicators on this board.

BOM

This list contains the logic circuits used, passive components are not listed.

  • 7 x 7400
  • 3 x 7402
  • 1 x 7410
  • 1 x 7420
  • 1 x 7430
  • 4 x 7450
  • 7 x 7472
  • 1 x 7473

Reference

  1. HARDWARE MANUAL NORD 1