3009

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ND-100 Local I/O bus board

3009 is the Local I/O bus card.

Introduction

What does it do?

Switches and indicators

There is a DIP switch with four switches on this card.

  • switch 1 off - 0 <= device no. <= 1777, 0 <= ident no. <= 377
  • switch 1 on - 2000 <= device no. <= 3777, 400 <= ident no. <= 777
  • switch 2 off - normal
  • switch 2 on - block all interfaces on this bus.

Switches 3 and 4 are not used. IOX address bit 15 active will block this card.

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?

Daughter cards

There are connectors for two daughter cards on this card. Mine only has one. Here are two pictures of it:
3009 daughtercard, view 1
3009 daughtercard, view 2

Reference