PDP-11/34A: Difference between revisions

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==External links==
==External links==


* [http://www.vaxhaven.com/images/8/84/EK-11034-MC-003.pdf PDP-11/04/34/34A Maintenance Card] (EK-11034-MC-003)
* [https://www.pdp-11.nl/pdp11-34a/pdp11-34general.html PDP-11/34A Processor Overview]
* [https://www.pdp-11.nl/pdp11-34a/pdp11-34general.html PDP-11/34A Processor Overview]



Revision as of 13:08, 22 February 2022

The PDP-11/34A is the version of the PDP-11/34 with the upgraded KD11-EA CPU needed to supported the optional FP11-A floating point unit and/or the KK11-A cache.

A PDP-11/34 could be converted to a PDP-11/34A by simply replacing the two hex boards of the KD11-E CPU. Since the DD11-P backplane of the -11/34 was not modified, if the cache or floating point boards were added, it used a baroque system of special over the top (OTT) connectors to join up one or both to the rest of the CPU.

External links