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Further reading □ Overview □ About Ferranti □ Brochure □ Architecture □ Architecture □ 1-Level Storage □ Words □ Instructions □ Order Code □ Animated □ Hardware □ Fixed Store □ Supervisor □ Overview □ Scheduler □ Core Memory □ Atlas Card □ Atlas Console □ Console Details □ Chilton □ Chilton Atlas □ Downstairs □ Manchester □ Manchester Atlas □ London □ London Atlas □ London Software □ Atlas II □ Atlas 2 Brochure □ Titan Autocode □ Cambridge Atlas □ Closure □ Atlas Closure
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⟶ ACL ⟶ Technology ⟶ ATLAS
⟶ ACL ⟶ Technology ⟶ ATLAS
ACL ACD C&A INF CCD CISD Archives
Further reading ⇓

□ Overview □ About Ferranti □ Brochure
Architecture
□ Architecture □ 1-Level Storage □ Words □ Instructions □ Order Code □ Animated
Hardware
□ Fixed Store □ Supervisor □ Overview □ Scheduler □ Core Memory □ Atlas Card □ Atlas Console □ Console Details
Chilton
□ Chilton Atlas □ Downstairs
Manchester
□ Manchester Atlas
London
□ London Atlas □ London Software
Atlas II
□ Atlas 2 Brochure □ Titan Autocode □ Cambridge Atlas
Closure
□ Atlas Closure

Chilton Atlas Downstairs

Engineer in front of console with bays 12b and 12c behind. Lift is at far end of room

Engineer in front of console with bays 12b and 12c behind. Lift is at far end of room
Full image ⇗
© UKRI Science and Technology Facilities Council

The downstairs part of Atlas was situated behind the engineers' workshops and was normally only accessible to the engineers and senior operations staff. The diagram below shows the layout of the bays and which bays still exist.

Air Conditioning Plant Room G48 G47 G46 Workshop Post Room Lift Atlas Processor 12c 12b 12a 8 5b 5a 3 2 1 E D C B A 10 11 7 6 4 9 Smaller Units A: PTR B: Teleprinter C: Console D: CCTV E: Filing Cabinet Cabinets now at the National Museum of Scotland Main Logic Cabinets (cb = cooling bay at one end of cabinet) 1: Fixed Store 2: CPU (3 bays + cb) 3: Core Store co-ord, PARs (3 bays + cb) 4: Drums(4), electronics (3 bays) 5a: Core store, stacks 0-5 (3 bays + 2 cbs) 5b: Core Store, stacks 6-11 (3 bays + 2 cbs) 6: Peripheral and drum coordinators, 1K working store (3 bays + cb) 7: Mag tape Coordinator (3 bays + cb) 8: IBM tape controller 9: Plessey 4K word core store (added 1968) 10: Mag Tape Exchange (2 bays) 11: Hard Disk (added 1968) 12a,b,c: Switching, power supply, monitoring etc

Looking towards the console area from the lift. Bays 5a and 5b containing the core store are on the left

Looking towards the console area from the lift. Bays 5a and 5b containing the core store are on the left
Full image ⇗
© UKRI Science and Technology Facilities Council

This shows part of the downstairs area at Chilton. The operators console is shown to the left. The arithmetic unit and B-Registers are shown behind. Normally the doors would be closed on the cabinets.

Engineers at Work

Engineers at Work
Full image ⇗
© UKRI Science and Technology Facilities Council
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