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devel / comp.sys.dec / VLISP-11 manual

o VLISP-11 manualDavid Roberts

VLISP-11 manual


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Subject: VLISP-11 manual
From: (David Roberts)
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 by: David Roberts - Wed, 11 Oct 2023 20:13 UTC


I am looking for a manual for the DEC RT-11 version of VLISP-11.

No luck using the usual search engines I am afraid.

The plan is to develop an Eliza chatbot program for a museum to run as a demonstration with their PDP-11/34 computer. I have found plenty of sources for Eliza-like Lisp programs - but (true to form) none of them run on VLISP-11...

Before I go through the source MACRO-11 code and generate my own documentation - I was just wondering if anyone already had a copy?

I have found this text in the DECUS library:


110617 VLISP-11 Version: March 1984

Submitted by: Paul Mennen, Palo Alto, CA

Operating System: RT-11 V4 or later, TSX-PLUS Source Language:
MACRO-11 Memory Required: 16KW to 30KW Keywords: Floating Point
Routines, LISP, Language Interpreters, Utilities - RT-11

Abstract: VLISP-11 is a complete LISP programming environment
which will run on any model PDP-11 or LSI-11. The VLISP
interpreter is written in MACRO assembly language and
implements 160 LISP functions including several I/O
functions providing access to the RT-11 file structure.
The rest of the package is written in VLISP and includes
a pretty-printer (with parenthesis matching and
commenting facilities), a save utility, a list oriented
editor, a debugger, a file transfer utility, and an
infinite precision floating point package. Additional
versions are included which utilize the EIS or EIS/FIS

Documentation available in hardcopy only.

Media (Service Charge Code): User's Manual (EB), Three RX01 Diskettes
(KC) Format: RT-11, 600' Magnetic Tape (MA) Format: RT-11


I am trying to find the "hardcopy only" documentation... Hopefully, someone has already got the hardcopy, or already scanned it.



devel / comp.sys.dec / VLISP-11 manual


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