DL11 Asynchronous Line Interface

This manual provides comprehensive documentation for the DL11 Asynchronous Line Interface used with the PDP-11 Unibus. The DL11 consists of a character-buffered communication interface on an M7800 module, available in five options (DL11-A through DL11-E). The document covers:

• General Description: Functional differences between options (Teletype, EIA, or Dataset control), data formats, and specifications.
• Installation and Configuration: Mounting instructions, power connections, jumper settings, and cable cabling diagrams for various external devices.
• Programming Information: Device registers (RCSR, RBUF, XCSR, XBUF), interrupt handling, timing, and programming examples.
• Vector Addressing: Information on the floating vector convention and specific interrupt vectors for PDP-11 systems.