KD11-E CPU: Difference between revisions
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[[Image:KD11-E M7265.jpg|250px|right|thumb|M7265 Data Paths card]] | [[Image:KD11-E M7265.jpg|250px|right|thumb|M7265 Data Paths card]] | ||
The '''KD11-E CPU''' was the first [[Central Processing Unit|CPU]] version for the [[PDP-11/34]]; it consisted of two [[DEC card form factor|hex]] [[printed circuit board]]s, the M7265 Data Paths module and the M7266 Control module. They plugged into a modified [[Modified UNIBUS Device|MUD]] [[backplane]], the [[DD11-P backplane]], which was customized for the KD11-E. | The '''KD11-E CPU''' was the first [[Central Processing Unit|CPU]] version for the [[PDP-11/34]]; it consisted of two [[DEC card form factor|hex]] [[printed circuit board]]s, the '''M7265''' Data Paths module and the '''M7266''' Control module. They plugged into a modified [[Modified UNIBUS Device|MUD]] [[backplane]], the [[DD11-P backplane]], which was customized for the KD11-E. | ||
Although it supported the [[KY11-LB Programmer's Console]], including the [[diagnostic]] functionality which allow the CPU's [[microcode]] to be [[single-step]]ped, it did not support the [[FP11-A Floating-Point Processor|FP11-A]] [[FP11 floating point|floating point]] unit or the [[KK11-A Cache Memory|KK11-A]] [[cache]]; a PDP-11/34 system needed the upgraded [[KD11-EA CPU]] for that. | Although it supported the [[KY11-LB Programmer's Console]], including the [[diagnostic]] functionality which allow the CPU's [[microcode]] to be [[single-step]]ped, it did not support the [[FP11-A Floating-Point Processor|FP11-A]] [[FP11 floating point|floating point]] unit or the [[KK11-A Cache Memory|KK11-A]] [[cache]]; a PDP-11/34 system needed the upgraded [[KD11-EA CPU]] for that. | ||
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The microcode diagnostic interface to the KY11-LB is carried over two 10-wire [[flat cable]]s with female [[Berg connector]]s connected to [[wire-wrap]] pin groups (denominated J1 and J2) in the upper left corner of the M7266 module. (The main functionality of the KY11-B is done over the UNIBUS, and a pair of backplane lines.) | The microcode diagnostic interface to the KY11-LB is carried over two 10-wire [[flat cable]]s with female [[Berg connector]]s connected to [[wire-wrap]] pin groups (denominated J1 and J2) in the upper left corner of the M7266 module. (The main functionality of the KY11-B is done over the UNIBUS, and a pair of backplane lines.) | ||
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==See also== | ==See also== | ||
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* [[KD11-E/EA microcode]] | * [[KD11-E/EA microcode]] | ||
==External links== | |||
* [http://www.bitsavers.org/pdf/dec/pdp11/1134/EK-KD11E-TM-001_KD11-E_Central_Processor_Maintenance_Manual_Dec76.pdf KD11-E central processor maintenance manual] (EK-KD11E-TM-001) | |||
* [http://www.bitsavers.org/pdf/dec/pdp11/1134/MP00082_1134_Vol2_Sep76.pdf 11/34 Vol. 2 Field Maintenance Print Set] (MP00082) - KD11-E is covered on pp. 41-62 | |||
[[Category: PDP-11 Processors]] | [[Category: PDP-11 Processors]] | ||
[[Category: UNIBUS Processors]] | [[Category: UNIBUS Processors]] | ||
Revision as of 12:44, 12 January 2022
The KD11-E CPU was the first CPU version for the PDP-11/34; it consisted of two hex printed circuit boards, the M7265 Data Paths module and the M7266 Control module. They plugged into a modified MUD backplane, the DD11-P backplane, which was customized for the KD11-E.
Although it supported the KY11-LB Programmer's Console, including the diagnostic functionality which allow the CPU's microcode to be single-stepped, it did not support the FP11-A floating point unit or the KK11-A cache; a PDP-11/34 system needed the upgraded KD11-EA CPU for that.
KY11-LB Interface
The microcode diagnostic interface to the KY11-LB is carried over two 10-wire flat cables with female Berg connectors connected to wire-wrap pin groups (denominated J1 and J2) in the upper left corner of the M7266 module. (The main functionality of the KY11-B is done over the UNIBUS, and a pair of backplane lines.)
See also
External links
- KD11-E central processor maintenance manual (EK-KD11E-TM-001)
- 11/34 Vol. 2 Field Maintenance Print Set (MP00082) - KD11-E is covered on pp. 41-62
