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MAC PDP-6 DECtape File Structure
(1965-07-01)
The MAC system programs, MACDMP, TECO, and MIDAS, assume a certain data structure on DECtapes which they handle. Each DECtape has 1100 blocks of 200 words, numbered 0 through 1077. Block 0 and blocks 1070 through 1077 are ...
Computer Experiments in Finite Algebra-II
(1965-12-01)
In a previous memo (Computer Experiments in Finite Algebra, MAC-M-245) we described a computer system for the handling of finite groups, semigroups, subsets, finite maps, and constants. This system has been extended to ...
PDP-6 LISP Input-Output for the Display
(1965-06-01)
An intermediate level language for display programming has been embedded in LISP 1.5 The language is intended as a basis for higher analysis of display information. Through the construction of a hierarchy of LISP functions ...
PDP-6 TECO
(1965-07-01)
TECO is a scope-keyboard text- editor. It uses an on-line command language (which permits macro-definitions, corditional, etc.) as well as text operations. The macro language permits the most sophisticated search, ...
A Theory of Computer Instructions
(1965-09-01)
This paper has arisen from an attempt to determine the nature of computer instructions from a viewpoint of general function and set theory. Mathematical machines, however the term is understood, are not adequate models for ...
A Useful Algebraic Property of Robinson's Unification Algorithm
(1965-11-01)
This memo presupposes some acquaintance with "A Machine Oriented Logic Based on the Resolution Principle", J.A. Robinson, JACM Jan65. The reader unfamiliar with this paper should be able to get a general idea of the ...
Syntax and Display of Mathematical Expressions
(1965-07-01)
A LISP program converts a mathematical expression stored in list structure form, into a text-book style visual display. To do this, requires the selection and positioning of the individual symbols which make up the expression, ...
Use of MACDMP
(1965-07-01)
MACIMP is a PDP-6 program which can load from DECtape to core memory, dump core onto DECtape, or verify a previously dumped filel against memory. Normally, just before it loads, it clears all of memory to 0 (except itself ...
MACTAP: A PDP-6 DECtape Handling Package
(1965-09-01)
MACTAP is a set of PDP-6 subroutines to read and write DECtape in the MAC file format (see MAC-M-249). Programmers can call these subroutines for input or output of ASCII data, which will be compatible with TECO files; or ...
Design of the Hand
(1965-08-01)
The following scheme for designing a general-purpose manipulator organ has many theoretical attractions. The basic idea is perhaps best conceived as a theoretical, or mathematical, idea. While it is unlikely that the actual ...