CADR

A CADR

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
  • Lisp Machine System Release History
  • Lisp Machine Manual Editions
• Images
  • CPU backplane
  • I/O box