MLSI-CR11 Card Reader Controller

The MLSI-CR11 Card Reader Controller is a dual module designed to interface various card readers with DEC PDP-11-type processors via the MDB BPA-84 Backplane/Cardguide Assembly. The manual details:

• Installation: Procedures for unpacking, module installation in the backplane, and cabling connections.
• Jumper Connections: Configuration settings to adapt the controller for different card reader logic levels (high-true or low-true).
• Programming Information: Descriptions of device registers (Status Register and Data Buffer Register) and their memory-mapped addresses.
• Theory of Operation: A detailed look at the Controller/Bus and Controller/Card Reader interfaces, the operating cycle, and interrupt logic.
• Maintenance: Guidelines for troubleshooting and information on required diagnostic software.

The manual also includes detailed logic diagrams and assembly drawings for technical support.