Contact us Heritage collections Image license terms
HOME ACL Associates Technology Literature Applications Society Software revisited
Further reading □ OverviewAbout FerrantiBrochure □ Architecture □ Architecture1-Level StorageWordsInstructionsOrder CodeAnimated □ Hardware □ Fixed StoreSupervisorOverviewSchedulerCore MemoryAtlas CardAtlas ConsoleConsole Details □ Chilton □ Chilton AtlasDownstairs □ Manchester □ Manchester Atlas □ London □ London AtlasLondon Software □ Atlas II □ Atlas 2 BrochureTitan AutocodeCambridge Atlas □ Closure □ Atlas Closure
ACD C&A INF CCD CISD Archives Contact us Heritage archives Image license terms

Search

   
ACLTechnologyATLAS
ACLTechnologyATLAS
ACL ACD C&A INF CCD CISD Archives
Further reading

OverviewAbout FerrantiBrochure
Architecture
Architecture1-Level StorageWordsInstructionsOrder CodeAnimated
Hardware
Fixed StoreSupervisorOverviewSchedulerCore MemoryAtlas CardAtlas ConsoleConsole Details
Chilton
Chilton AtlasDownstairs
Manchester
Manchester Atlas
London
London AtlasLondon Software
Atlas II
Atlas 2 BrochureTitan AutocodeCambridge 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
⇑ 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