Difference between revisions of "KC11 CPU"

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(Notnmuch to say)
 
m (External links: +KC11 versions of PDP-11/15 modules; update to new locs on other two)
 
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==External links==
 
==External links==
  
* [http://www.bitsavers.org/pdf/dec/pdp11/1120/PDP11_15_KC11_Block_Diagram.pdf KC11 Block Diagram]
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* [http://www.bitsavers.org/pdf/dec/pdp11/1120/ 11/20] - documentation at [[Bitsavers]] is here
* [http://www.bitsavers.org/pdf/dec/pdp11/1120/PDP-11_15FP_KY11-C.pdf KY11-C programmer's console engineering drawings] (DEC-11-HYCA-D)
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** [http://www.bitsavers.org/pdf/dec/pdp11/1120/PDP11_15_KC11_Block_Diagram.pdf KC11 Block Diagram]
* [http://www.bitsavers.org/pdf/dec/pdp11/1120/M7218_PDP11_15_Bus_Requests.pdf M7218 Bus Requests]
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** [http://www.bitsavers.org/pdf/dec/pdp11/1120/PDP-11_15_modules/ PDP-11/15 modules] - KC11 versions
* [http://www.bitsavers.org/pdf/dec/pdp11/1120/M7217_PDP11_15_PWRFAIL_RESTART.pdf M7217 Power Fail & Restart]
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*** [http://www.bitsavers.org/pdf/dec/pdp11/1120/PDP-11_15_modules/M7218_PDP11_15_Bus_Requests.pdf M7218 Bus Requests]
 +
*** [http://www.bitsavers.org/pdf/dec/pdp11/1120/PDP-11_15_modules/M7217_PDP11_15_PWRFAIL_RESTART.pdf M7217 Power Fail & Restart]
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** [http://www.bitsavers.org/pdf/dec/pdp11/1120/PDP-11_15FP_KY11-C.pdf KY11-C programmer's console engineering drawings] (DEC-11-HYCA-D)
  
 
[[Category: PDP-11 UNIBUS Processors]]
 
[[Category: PDP-11 UNIBUS Processors]]

Latest revision as of 08:24, 8 August 2025

The KC11 CPU was the CPU of the PDP-11/15, the OEM version of the PDP-11/20. It was essentially the KA11 CPU of the PDP-11/20, with several minor emendations to justify a lower price:

  • Only one interrupt priority level on the UNIBUS
  • No power fail/restart support

Both the 4-level priority support and power fail/restart were available as options: the KF11-A (M7218) and KP11-A (M7217).

The 'basic' front panel of the PDP-11/15 was the KY11-B; it had only 'power' and 'run' lights, and 'start', 'halt' and 'continue' switches. It could be upgraded to the KY11-C, which was basically identical to the KY11-A Programmer's Console of the KA11, except that it had only 16 address switches, instead of 18.

External links