VT510 Video Terminal

This document provides comprehensive information for programmers developing applications for the VT510 video terminal. It details the terminal's three models (North American, International, Low Emission) and its versatile hardware features, including various communication ports (RS-232, MMJ, Centronics parallel) and keyboard options (VT and enhanced PC layouts with reprogrammable keys and user-defined keys).

The manual covers an extensive Terminal Set-Up system, including menu-based configuration, power-on defaults, error messages, and context-sensitive features. It also describes Desktop Productivity Features such as a calculator, clock, and character set tables.

A significant portion of the document is dedicated to ANSI Mode and ASCII Emulation, providing in-depth details on:

• ANSI Control Functions: A thorough summary and detailed descriptions of control characters, escape sequences, control sequences, and device control strings for various operations like text processing, terminal management, keyboard processing, and communications.
• Character Sets: Support for a wide array of graphic and control character sets, including ISO Latin, Cyrillic, Greek, Hebrew, Turkish, Eastern European languages, and IBM PC code pages, along with their mappings and structure in VT and PCTerm modes.
• Keyboard Processing: Information on keyboard layouts, modifier keys, editing and numeric keypads, local function key defaults, language switching, and scan codes for both VT and enhanced PC keyboards.
• Communications: Details on serial asynchronous communications, physical links, data link layer protocols (7-bit VT100/8-bit VT510 operation, flow control options), and supported modem configurations.
• Printer Port: Features, serial and parallel port flow control, various print modes, and methods for transmitting print data using DEC ANSI or IBM ProPrinter protocols.
• ASCII Emulations: Specifics on emulations for popular ASCII terminals (WYSE, Televideo, ADDS A2), including their control functions, escape sequences, and character font definition and loading.

The document highlights the VT510's enhanced flexibility in keyboard and communication, ergonomic design, and field-upgradable firmware, serving as a technical reference for developing robust applications.