VAXstation 2000 and MicroVAX 2000 Technical Manual Addendum: DHT32 Asynchronous Serial Line Option

This document is a technical manual addendum for the DHT32 Asynchronous Serial Line Option. It details the hardware components, including the controller module and the driver/receiver module, and their interfaces with the MicroVAX 2000 system. The manual provides:

• Physical and Electrical Specifications: Details on the modules, connector pinouts, and power/environmental requirements.
• Functional Description: An overview of the controller, interrupt handling, and register definitions (e.g., status, receive buffer, line parameters).
• Internal Diagnostics: Information on self-test procedures, error codes, and background testing.
• Reset State: Summaries of the system status following a reset.