3004

3004 is the 10 MB Disk Controller.

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Introduction

What does it do?

Switches and indicators

From top of the card

• Read - yellow LED - indicating read transfer.
• Write - yellow LED - indicating write transfer.
• Parity - yellow LED - indicating read parity.
• Compare - yellow LED - indicating compare transfer.
• Op. Ind. - yellow LED - indicating start or active set by control word bit 2 (activate).
• Error - red LED - indicating different error conditions (timeout, address mismatch, etc.)

Device number - thumbwheel switch, with the following settings:

• 0 - Disk system 1, Device no. 500, Ident no. 1
• 1 - Disk system 2, Device no. 510, Ident no. 5

Setting 2 - 15 is not used.

IOX address bit 15 active will inhibit 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?

Reference

Norsk Data Document ND–06.015.02 ND-100 FUNCTIONAL DESCRIPTION

• Norsk Data Document ND–30.008.3 EN ND-100 Hardware Maintenance