3009 is the Local I/O bus card.
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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.
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