Genera for the Initiated: Inside Symbolics Lisp Machines

An interactive presentation exploring the history of Lisp Machines and demonstrating the Symbolics Genera operating system.

The history of Lisp Machines, through a deep dive into Symbolics Genera. An interactive presentation of Lisp Machine functionality, history of their development, and a live demonstration of Symbolics Genera. === CHAPTERS === 00:00 Intro 02:04 Andrey Ershov, John McCarthy, and early international computing exchanges 06:04 The origins of Lisp and why hardware struggled with dynamic lists and garbage collection 10:04 Tom Knight, the Knight TV terminal, and the MIT AI Lab hacking culture 14:04 Developing dedicated Lisp machine hardware with tagged architectures and microcode 18:01 The commercial split between Richard Greenblatt's LMI and Symbolics 22:00 The Symbolics Ivory microprocessor and software-implemented instruction sets 26:00 Overview of Genera where every layer from kernel to GUI is pure Lisp 28:05 Live demonstration inside Genera with dynamic inspectors, error handling, and file systems 34:00 Logical pathnames, host abstraction, and networked file systems 38:03 Editing buffers, compiling TeX, and live debugging without reboots 46:01 Deep dive into interactive stack trace inspection and object browsing 50:01 Audience Q&A on the Lisp machine legacy, AI winters, and modern parallels === SPEAKER BIO === Philippe Fominykh is a Common Lisp consultant and a Lisp Machine enthusiast.