VMS Documentation CD-ROM &unibus question

From: Bill Pechter <pechter_at_bg-tc-ppp918.monmouth.com>
Date: Tue Jun 12 16:54:53 2001

>
> Also, a quickie question: how many pins are on the Unibus?

Damn a stumper.

Backplane Slots A and B are unibus...
There's DEC Standard numbering IIRC...

ABCDEFHJKLMNPRSTUV
000000000111111111 So that's 18 pins per row -- two sided AA1 AA2 etc
123456789012345678 is 36 times 2 slots an you get 72 pins -- I think.

I checked the pins with the VAX 11/750 Hardware Maintenance Handbook

AA1-AV1
AA2-AV2
BA1-BV1
BA2-BV2

>
> Thanks,
> Roger "Merch" Merchberger


Bill
(who got it wrong figuring by memory)
---
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  villain in a James Bond movie              -- Dennis Miller 
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Received on Tue Jun 12 2001 - 16:54:53 BST

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