3020

From NDWiki
Revision as of 15:04, 10 January 2020 by Tingo (talk | contribs) (add ECO section, add known ECO's)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

3020 is the STC magtape controller.

Imbox notice.png  This article is a stub. You can improve NDWiki by expanding it.

Introduction

What does it do?

Switches and indicators

Indicators, from top of the card

  • Error - red LED - indicating an error
  • RFT - green LED - ready for transfer
  • RDYS - green LED - ready status from formatter - selected drive is ready
  • HDENS - yellow LED - high density 6250 BPI (CGR)
  • DMAIN - yellow LED - DMA input - read from magtape
  • DMAOUT - yellow LED - DMA output - write to magtape

Device number thumbwheel switch

  • 2 - Magtape system 1, device no. 520, Ident 3
  • 3 - Magtape system 2, device no. 530, Ident 7

Other positions are unused.

Connectors

The A and B connectors are used for I/O, the C connector is used for the ND-100 Bus.

I/O Devices on the card

none?

ECO

Here is a list of known ECO's (Engineering Change Order) for this card.

  • ECO 100-771 - Wrong data is written to tape due to short pulse BUDAT-1[1]

Reference

  1. ↑ sintran.com, Norsk Data library, ECO [1]
Retrieved from "https://www.ndwiki.org/index.php?title=3020&oldid=5717"