GIGI/ReGIS Handbook

This document is the GIGI™/ReGIS Handbook from Digital Equipment Corporation, published in June 1981. It serves as a comprehensive guide for programmers and users of the GIGI graphics terminal, focusing on its hardware features, graphics capabilities, and programming.

The manual is structured into three main parts:

1. Getting Started: Introduces the GIGI terminal's components, architecture, and dual operating modes (text and graphics). It details the keyboard layout, program function keys, supported monitors and printers (like the DECwriter IV), graphics tablets, and extensively covers "set-ups" – customizable terminal control features that adapt GIGI to various operating environments (e.g., transmission speeds, keyboard behavior, display settings).
2. GIGI Graphics: Provides in-depth information on ReGIS (Remote Graphics Instruction Set), GIGI's proprietary graphics language. This section explains how to code and execute ReGIS commands to draw pictures (lines, curves, circles, text), manage screen concepts (coordinate system, pixels, cursor positioning, color, shading, and text attributes), and use features like macrographs. It also delves into the technical aspects of how GIGI displays images using video memory.
3. Programming GIGI: Offers practical programming guidance, including examples in BASIC and PASCAL for creating graphics. It also covers how to program the auxiliary keypad, utilize "locator mode" for graphical input (e.g., with a graphics tablet), and implement terminal control and graphics renditions using GIGI-specific and ANSI escape sequences.

Appendices include technical references for GIGI key codes, GIGI BASIC commands and statements, ASCII codes, and a comprehensive glossary. The handbook is intended for programmers responsible for developing applications and customizing the GIGI terminal.