Difference between revisions of "CADR"
From Computer History Wiki
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** [http://www.stupi.se/Bilder/pdp-10/jpg1/dscn2952.jpg CPU backplane] | ** [http://www.stupi.se/Bilder/pdp-10/jpg1/dscn2952.jpg CPU backplane] | ||
** [http://www.stupi.se/Bilder/pdp-10/jpg1/dscn2945.jpg I/O box] | ** [http://www.stupi.se/Bilder/pdp-10/jpg1/dscn2945.jpg I/O box] | ||
+ | ** [https://www.computerhistory.org/collections/catalog/102803888/search/acquisition-number:2022.0073/ CADR Tester Close Up at MIT AI Lab] | ||
[[Category: Workstations]] | [[Category: Workstations]] |
Revision as of 21:02, 18 September 2025
The CADR was the first successful LISP machine, built by the MIT AI Lab as a follow-on to the prototype CONS machine. Many were produced by the AI Lab; several startups (including Symbolics and LMI) produced direct descendants.
Physically, the microcoded CPU was a single huge wire-wrap swing-out bay mounted in the front of an H960 rack. A separate backplane held main memory cards, I/O cards, etc.

The Knight keyboard was used with the MIT-AI ITS machine and CADRs; this is a rendition of the layout
External links
- CADR - AI Memo 528
- CADR - Bitsavers
- cadr2/mit/ - much MIT CADR material
- Retrocomputing - MIT CADR Lisp Machines - includes emulator, complete sources, and bootable disk images
- LM-3 --- resurrecting the MIT CADR - contains much interesting historical material, as well as current simulation work
- CADR LISP machine - from Paul Allen's collection at the LCM, includes several images
- Images