Vaxorcist: Created page with "The '''KA785 CPU''' was the CPU for the VAX-11/785. It was implemented with a large group of hex cards: {| class="wi..."

2022-07-01T14:36:24Z

Created page with "The '''KA785 CPU''' was the CPU for the VAX-11/785. It was implemented with a large group of hex cards: {| class="wi..."

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The '''KA785 CPU''' was the [[Central Processing Unit|CPU]] for the [[VAX-11/785]].

It was implemented with a large group of [[DEC card form factor|hex]] cards:

{| class="wikitable"
! Slot !! Board !! Acronym !! Function
|-
| 29 || M7455 || CIB || Console Interface Board
|-
| 23 || M7476 || USC || Microsequencer
|-
| 22 || 7014 || || Blank Module
|-
| 20 || M7475 || WCS || Writeable Control Store
|-
| 18 || M7475 || OCS || Optional Control Store
|-
| 16 || M7474 || CLK || Processor Clock
|-
| 15 || M7473 || ICL || Interrupt Control
|-
| 14 || M7472 || CEH || Condition Codes/Exceptions
|-
| 13 || M7471 || DAP || Data Path
|-
| 12 || M7470 || DCP || Data Path
|-
| 11 || M7469 || DDP || Data Path
|-
| 10 || M7468 || DEP || Data Path
|-
| 9 || M7467 || DBP || Data Path
|-
| 8 || M7466 || IRC || Instruction Decode
|-
| 7 || M7465 || IDP || Instruction Buffer
|-
| 6 || M7464 || TBM || Translation Buffer
|-
| 5 || M7463 || COM || Cache Data
|-
| 4 || M7462 || CAM || Cache Address
|-
| 3 || M7461 || SBH || SBI High Bits Interface
|-
| 2 || M7460 || SBL || SBI Low Bits Interface
|-
| 1 || M7459 || TRS || SBI Terminator and Silo
|}

==External links==

* [http://www.bitsavers.org/pdf/dec/vax/785/EK-11785-UG-PRE_VAX-11_785_Hardware_Users_Guide_1984.pdf VAX-11/785 Hardware User's Guide] (EK-11785-UG-PRE)
* [http://www.bitsavers.org/pdf/dec/vax/785/MP-01747_11785_Jan85.pdf 11785-A CPU Cabinet Field Maintenance Print Set] (MP-01747)
* [http://www.bitsavers.org/pdf/dec/vax/785/MP-01749_KA785_Oct83.pdf KA785 Field Maintenance Print Set] (MP-01749)

[[Category: DEC VAX Processors]]

KA785 CPU - Revision history

Vaxorcist: Created page with "The '''KA785 CPU''' was the CPU for the VAX-11/785. It was implemented with a large group of hex cards: {| class="wi..."