Difference between revisions of "PDP-11/34"

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The '''PDP-11/34''' was [[DEC]]'s lower-cost replacement to the [[PDP-11/40]] as the low-end [[PDP-11]] system capable of running [[time-sharing]], using [[virtual memory]]; it had the [[PDP-11_Memory_Management|limited virtual memory capabilities]] of the PDP-11/40, though. It was a [[UNIBUS]] machine; as such, it was normally limited to 248KB of [[main memory]].
 
The '''PDP-11/34''' was [[DEC]]'s lower-cost replacement to the [[PDP-11/40]] as the low-end [[PDP-11]] system capable of running [[time-sharing]], using [[virtual memory]]; it had the [[PDP-11_Memory_Management|limited virtual memory capabilities]] of the PDP-11/40, though. It was a [[UNIBUS]] machine; as such, it was normally limited to 248KB of [[main memory]].
  
The [[CPU]] came in two variants: the [[KD11-E CPU|KD11-E]], and the plug-compatible replacement [[KD11-EA CPU|KD11-EA]] (M8265 and M8266). The latter had provision for the [[FP11-A Floating Point Processor|FP11-A]] [[FP11 floating point|floating point]] unit, and the [[KK11-A Cache Memory|KK11-A]] [[cache]] (the system could use either, or both).
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The [[CPU]] came in two variants: the [[KD11-E CPU|KD11-E]], and the plug-compatible replacement [[KD11-EA CPU|KD11-EA]] (M8265 and M8266). The latter had provision for the [[FP11-A Floating-Point Processor|FP11-A]] [[FP11 floating point|floating point]] unit, and the [[KK11-A Cache Memory|KK11-A]] [[cache]] (the system could use either, or both).
  
 
It could be provided with either the [[KY11-LA Operator's Console]] (a limited functionality console with only halt and boot functionality), or the [[KY11-LB Programmer's Console]].
 
It could be provided with either the [[KY11-LA Operator's Console]] (a limited functionality console with only halt and boot functionality), or the [[KY11-LB Programmer's Console]].

Revision as of 17:28, 6 December 2017


PDP-11/34
Manufacturer: Digital Equipment Corporation
Architecture: PDP-11


A PDP-11/34 partially disassembled; the board on the left is for the KY11-LB Programmer's Console

The PDP-11/34 was DEC's lower-cost replacement to the PDP-11/40 as the low-end PDP-11 system capable of running time-sharing, using virtual memory; it had the limited virtual memory capabilities of the PDP-11/40, though. It was a UNIBUS machine; as such, it was normally limited to 248KB of main memory.

The CPU came in two variants: the KD11-E, and the plug-compatible replacement KD11-EA (M8265 and M8266). The latter had provision for the FP11-A floating point unit, and the KK11-A cache (the system could use either, or both).

It could be provided with either the KY11-LA Operator's Console (a limited functionality console with only halt and boot functionality), or the KY11-LB Programmer's Console.

Apparently it was cloned in the Soviet Union as the SM 1420.