Contact us Heritage collections Image license terms

HOME ACL Associates Technology Literature Applications Society Software revisited ACD C&A INF CCD CISD Archives Contact us Heritage archives Image license terms

Search

ACL ACD C&A INF CCD CISD Archives

Applications Associates Literature Society Technology Software revisited

Algol □しろいしかく Animation □しろいしかく Astrophysics □しろいしかく Biology □しろいしかく Compiler-Compiler (CC) □しろいしかく Non-numeric applications □しろいしかく Crystallography □しろいしかく Engineering □しろいしかく Graphics □しろいしかく FORTRAN/Hartran □しろいしかく Information retrieval □しろいしかく Microdensitometer service □しろいしかく Number theory and mathematics □しろいしかく Physics □しろいしかく Quantum chemistry (QC) □しろいしかく Satellite data processing □しろいしかく Applied maths and statistics □しろいしかく Weather forecasting

Further reading ⇓

□しろいしかく Overview □しろいしかく 1962: An outline of Fortran □しろいしかく 1962: Operating experience with Fortran □しろいしかく 1962: Implementation of Fortran on Atlas □しろいしかく 1962: Proposed target language (BAS) □しろいしかく 1962: BAS binary card □しろいしかく 1963: Intermediate Atlas symbolic programming language (INTERASP) □しろいしかく 1963: Addendum □しろいしかく 1963: A primer for Fortran programming □しろいしかく 1964: Atlas Fortran manual: Part I □しろいしかく 1964: Part II □しろいしかく 1964: Using HARTRAN □しろいしかく 1965: System note 4 □しろいしかく 1966: Fortran on Atlas
Atlas 2 at AWRE
□しろいしかく 1965: BAS subroutines □しろいしかく 1965: System notes □しろいしかく 1966: S3 Fortran
Titan
□しろいしかく 1966: System note 1 □しろいしかく 1966: System note 2 □しろいしかく 1966: Fortran on Titan □しろいしかく 1966: Compile Master on Titan □しろいしかく 1966: System Note 3 □しろいしかく 1966: Differences between S3 dialect and Fortran II □しろいしかく 1966: Magnetic tape library subroutines □しろいしかく 1967: T3 Fortran reference manual

Hartran: Overview

The papers in this section are mainly provided by Brian Chapman.

A large part of the anticipated workload for Atlas was expected to come from Harwell and the Rutherford Laboratory. Both organisations had made use of IBM computers both at Aldermaston and Risley. In consequence, a large body of programs already existed written in Fortran. Getting a Fortran system up and running as soon as Atlas arrived was essential. The only way to ensure that at the time was to write a compiler and loading system for Atlas (called Hartran) that would be available as soon as the machine arrived.

Ian Pyle of Harwell was in charge of the team working on the project with Bart Fossey and Barbara Stokoe, who both moved to the Atlas Computer Laboratory, being heavily involved.

The Hartran loading system was made available on the Atlas II at Aldermaston using a modified version of the S2 Fortran compiler (S3) originally developed for the IBM 7030 (Stretch).

This system was then made available on the Cambridge Titan. Cambridge also produced a Fortran compiler called T3 aimed at compiling student jobs.

[画像:Barbara Stokoe, Jack Howlett, Bart Fossey: 1965]

The set of people who worked on Hartran were:

Initial Project Design

Alan Curtis and Ian Pyle

BAS Specification

Alan Curtis and Ian Pyle

ASP Specification

Ian Pyle

Fortran Compiler Design

Ian Pyle

Fortran Compiler Phase 1

Ian Pyle and Barbara Stokoe

Fortran Compiler Phase 2

Brian Chapman

Fortran Compiler Phase 3

Bart Fossey and Paul Bryant

ASP Assembler

Bob McLatchie

BAS Loader

Arthur Trice

Hartran Interface

Bart Fossey

Others who did some work include Bob Hopgood (Library Routines and Debugging), Bob Conrod (assembler).

Additional information on Hartran can be found here:

• Memories of Atlas Fortran., Ian Pyle November, 2012
• My life on Atlas 1 and 2, Brian Chapman, August, 2014

⇑ Top of page

© Chilton Computing and UKRI Science and Technology Facilities Council webmaster@chilton-computing.org.uk
Our thanks to UKRI Science and Technology Facilities Council for hosting this site