Atlas fault logging

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Dates of Creation

Scope and Content

(a). Line printer output of log tape, 7th April 1971.
(b). Store dump at 12:16:16 on 18/3/1970.
(c). More engineers’ print-outs.

These listings are contained in a buff foolscap folder marked in pencil as “Atlas sample fault logging/pm 1971 (disc)". During normal operation, Atlas periodically sent system monitoring information to a teleprinter and to a 7-track paper tape punch. The information was in compressed form. A day's run of this Log Tape could be printed out later on the line printer (as here) for inspection by the maintenance engineers. This particular Log Tape records incidents occurring in the period 09:16 on 7th April to 05:22 on 6th April. At the end is an analysis of computing time lost due to restarts (both automatic and manual). The Log Tape was also processed by an analysis program run by the Computing Service, from which end-users could be ‘charged’ for resources used by their jobs.

Archive Record|Table of contents

Eric Sunderland PapersESF

The Autocode programs developed for the Manchester University Computers. R A BrookerESF/1

Reprints of three IEE papers on computer hardware.ESF/2

R A Brooker and Frank Sumner, "The Atlas One-level Store"ESF/3

S Michaelson and D G Burnett-Hall "The Manchester Mercury Autocode system: No. 5, a glossary of terms and formulae"ESF/4

R A Brooker and D Morris, "A description of Mercury Autocode in terms of a phrase structure language"ESF/5

R A Brooker and D Morris, "Some proposals for the realization of a certain assembly language"ESF/6

The Manchester University Atlas operating system. Part I: internal organisation.ESF/7

TR5 paper tape reader logical diagram; teletype logical diagram.ESF/8

Ferranti Flexowriter codeESF/9

Atlas B Adder operating strobes.ESF/10

Set of Atlas schematic and logic diagrams.ESF/11

Summary of Atlas basic instructions.ESF/12

Atlas computer: summarised programming information. Ferranti Ltd. (later ICT) June 1963. List CS 384ESF/13

Large block diagram of AtlasESF/14

T Kilburn, R B Payne and D J Howarth, "The Atlas Supervisor"ESF/15

B Stokoe and E B Fossey, "List size restrictions in the current version of the Atlas Fortran compiler 12th February 1962".ESF/16

R A Brooker, D Morris and J S Rohl, "Trees and routines"ESF/17

R L Grimsdale, R W Mathers and F H Sumner "An investigation of computer-controlled traffic signals by simulation"ESF/18

Specification for dimensions of punched tapes used with Ferranti computers. Ferranti Ltd., List CS364ESF/19

Functional descriptions of some Atlas central processor sub-unitsESF/20

Atlas Peripheral V-Store: digits, addresses and LAM tree. Drawings OD 4.02, 4.03ESF/21

Atlas PAT tests, Mark 2.ESF/22

Atlas magnetic tape system: interrupt routines and other documentation.ESF/23

"Input and output for ICT Atlas computers 1 and 2. ICT, April 1964"ESF/24

"Preparing a complete program for Atlas 1. ICT, Aug. 1964"ESF/25

Atlas scheduling rules.ESF/26

The ICT Atlas 1 computer programming manual for Atlas Basic Language (ABL). List CS 348AESF/27

The ICT Atlas 1 computer programming manual for Atlas Basic Language (ABL). List CS 348A,ESF/28

Atlas Computer Laboratory: Users’ Handbook. January 1965.ESF/29

J B Dennis, "Segmentation and the design of multi-programmed computer systems"ESF/30

Ampex magnetic tape deck logic. Ferranti drawing LDP/0404.ESF/31

Peanut puzzle.ESF/32

Miscellaneous Atlas program notes and code fragments.ESF/33

Frank Sumner and Eric Sunderland, "Automatic program tracing"ESF/34

Atlas 1: Central computer. ICT manual EP 89 .ESF/35

Atlas Intermediate Input C.ESF/36

Intermediate Input F (IIF).ESF/37

Atlas central V-Store, E S. 20th May 1966ESF/38

R A Brooker, J S Rohl and S R Clark, "The main features of Atlas Autocode"ESF/39

D J Howarth, "Variable input code conversion at MUSE, 25th April 1967"ESF/40

On line fault monitoring on MUSE.ESF/41

E. Sunderland, "Automatic fault monitoring and restart procedure on the SRC Atlas", 16th February 1968.ESF/42

E Sunderland, "Implementation of disc versions of tests on SRC Atlas"ESF/43

E Sunderland, "MUSE disc file object program use" 22nd July 1968.ESF/44

Eleven Atlas Supervisor and engineers’ test tapes.ESF/45

Experiments to determine page usage and other run-time statistics for a range of Atlas user-programs.ESF/46

Atlas experiments: checking usage of pages between drum-to-core and core-to-drumESF/47

Atlas experiments: checking the frequency of instruction-types, etc.ESF/48

Thoughts on an MU5 instruction buffer and jump-trace unit, based on experiments on Atlas.ESF/49

Atlas fault logging. Line printer output of log tape, 28th Nov. 1969.ESF/50

Atlas fault loggingESF/51

Roll of teleprinter paper containing instructions to the magnetic tape operator, 20th March 1971.ESF/52

1905E. Internal departmental memo.ESF/53

MU5 CPU overall diagram, issue 1, 17th February 1971ESF/54

Code and data for Atlas four-part harmony musicESF/55

Generating four-part harmony music on the Ferranti Atlas computer at Manchester University.ESF/56

Reel of 8-track paper tape, labelled ‘Welsh Dirge’ESF/57

R N Ibbett., "The MU5 instruction pipeline"ESF/58

Farewell to Atlas.ESF/59

MU5 Exchange OR-gate block diagram. 4/10/Fig. 2 (Issue 1).ESF/60

Notes for a presentation on MU5ESF/61

MU5 demonstration programs for the University Open Day, 20th May 1978ESF/62

PDP 11/34s and MU6ESF/63

System architecture diagram of the Manchester University Parsifal transputer network.ESF/64

E-mail exchanges between Eric Sunderland and SHL, autumn 2012, recalling various details of the Manchester Atlas installationESF/65