3004

3004 is the 10 MB Disk Controller.

Introduction
What does it do?

Switches and indicators
From top of the card Device number - thumbwheel switch, with the following settings: Setting 2 - 15 is not used.
 * 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.)
 * 0 - Disk system 1, Device no. 500, Ident no. 1
 * 1 - Disk system 2, Device no. 510, Ident no. 5

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?