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Alan Turing's Automatic Computing EngineThe Master Codebreaker's Struggle to build the Modern Computer$
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B. Jack Copeland

Print publication date: 2005

Print ISBN-13: 9780198565932

Published to Oxford Scholarship Online: January 2008

DOI: 10.1093/acprof:oso/9780198565932.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 13 April 2021

The Pilot ACE instruction format

The Pilot ACE instruction format

(p.209) 9 The Pilot ACE instruction format
Alan Turing's Automatic Computing Engine

Henry John Norton

Oxford University Press

This chapter begins with the author's recollections about Alan M. Turing while working at the National Physical Laboratory. It then discusses the Pilot ACE Instruction Set Architecture (ISA). The ISA is an important abstraction for the interface between the hardware and the low level software. It standardizes instructions, machine language bit patterns, among other things. It allows for the use of different implementations of the same architecture on different machines.

Keywords:   Alan M. Turing, Pilot ACE, Instruction Set Architecture, computing

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