Difference between revisions of "J-11 chip set"

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It implements the full PDP-11 memory management architecture (with split Instruction and Data address space support, as well as Supervisor mode). Although it contains built-in [[FP11]] floating-point support, it can operate with an [[FPJ11]] floating point accelerator.
 
It implements the full PDP-11 memory management architecture (with split Instruction and Data address space support, as well as Supervisor mode). Although it contains built-in [[FP11]] floating-point support, it can operate with an [[FPJ11]] floating point accelerator.
  
All uses on DEC PDP-11 CPU boards (all for the [[QBUS]]) contain an external cache.
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Most uses on DEC PDP-11 CPU boards (all for the [[QBUS]]) contain an external cache.
  
 
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Revision as of 16:23, 2 June 2016

J-11

The J-11 (formally, the DCJ11, although DEC documentation uses both names) is a high-performance CMOS implementation of the PDP-11 architecture, implemented in two chips ('Control' and 'Data') carried on a single 60-pin DIP carrier.

It implements the full PDP-11 memory management architecture (with split Instruction and Data address space support, as well as Supervisor mode). Although it contains built-in FP11 floating-point support, it can operate with an FPJ11 floating point accelerator.

Most uses on DEC PDP-11 CPU boards (all for the QBUS) contain an external cache.