Difference between revisions of "KB11-C CPU"

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'''''Note''''': ''The DEC documentation contains an error here. The "PDP-11/70 Maintenance and Installation Manual", EK-11070-MM-002, refers to the M8133 in board lists for the KB11-C, where the M8123 is meant (e.g. pg. 1-3). However the KB11-C Engineering Drawings include the drawings for the M8123, not the M8133; other manuals also confirm that the KB11-C uses the M8123 (see, for example, the KB11-A,D Maintainence Manual, EK-KB11A-MM-004, pg 1-1).''
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'''''Note''''': ''The DEC documentation contains an error here. The "PDP-11/70 Maintenance and Installation Manual", EK-11070-MM-002, refers to the M8133 in board lists for the KB11-C, where the M8123 is meant (e.g. pg. 1-3). However, the KB11-C Engineering Drawings include the drawings for the M8123, not the M8133; other manuals also confirm that the KB11-C uses the M8123 (see, for example, the KB11-A,D Maintainence Manual, EK-KB11A-MM-004, pg 1-1).''
  
{{PDP-11}}
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==See also==
  
[[Category: PDP-11 Processors]]
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* [[KB11-B CPU]]
[[Category: UNIBUS Processors]]
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==External links==
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* [http://bitsavers.org/pdf/dec/pdp11/1170/EK-KB11C-TM-001_1170procMan.pdf KB11-C Processor Manual (PDP-11/70)] (EK-KB11C-TM-001)
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* [http://bitsavers.org/pdf/dec/pdp11/1170/MP0KB11-C0_1170engDrw_Nov75.pdf KB11-C 16-Bit Processor Engineering Drawings (11/1977)]
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* [http://bitsavers.org/pdf/dec/pdp11/1170/MP0KB11-C0_KB11-C_revB_cpy2_Nov1975.pdf KB11-C 16-Bit Processor Engineering Drawings] (alt copy)
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* [http://bitsavers.org/pdf/dec/pdp11/1170/KB11-C_signalIndex.pdf KB11-C Signal Index]
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[[Category: PDP-11 UNIBUS Processors]]
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[[Category: DEC Documentation Errors]]

Latest revision as of 20:03, 24 October 2022

The KB11-C CPU is the later CPU for the PDP-11/70; it is basically the same as the earlier KB11-B CPU, except that it takes the later synchronous FP11-C Floating-Point Processor, instead of the asynchronous earlier FP11-B Floating-Point Processor

Boards

The basic KB11-C consisted of fifteen hex boards, basically the same board set as the earlier KB11-B, except that two boards:

  • M8133 ROM and ROM Control
  • M8138 System Status Registers

were replaced with the:

  • M8123 ROM and ROM Control
  • M8138-YA System Status Registers

respectively.

Note: The DEC documentation contains an error here. The "PDP-11/70 Maintenance and Installation Manual", EK-11070-MM-002, refers to the M8133 in board lists for the KB11-C, where the M8123 is meant (e.g. pg. 1-3). However, the KB11-C Engineering Drawings include the drawings for the M8123, not the M8133; other manuals also confirm that the KB11-C uses the M8123 (see, for example, the KB11-A,D Maintainence Manual, EK-KB11A-MM-004, pg 1-1).

See also

External links