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DEC Server 550 converted to 11/83


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  DEC Server 550 converted to 11/83 by Bill Degnan - 03/13/2018 23:12
This thread is a collection of notes taken to get started with this DecServer 550 with 11/83 cards (left three slots). The remaining cards currently in the slots would need to be removed and replaced with others suited to a 11/83. As I got the machine the cards were not plugged in.

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M8190 AE (CPU)
M8637 EH (or EA?) RAM
M8637 EH RAM

need to complete build using QBUS cards on hand.


look to see if I can find RA72 drives and cables within my inventory. I have the correct controller cards: M7164 qbus sdi disk adapter 1 of 2
M7165 qbus sdi disk adpater 2 of 2

I read one can make a SDI cable from an ethernet cable if I don't have an actual SDI cable.

Even better, I have these as my best candidate cards to attempt to use SCSI storage in the 11/83 (installed in a Decserver 550 chassis):

KZQSA M5976 -SA SCSI - I thought this was not compatible, but I have seen some evidence that it may be.!

EMULEX QT1410402-00 REV C SCSI - VAX CARD or QBUS or both?

I have to get educated. Up to this point I put off dealing with QBus and stuck to UNIBUS or Vax/Alpha. I also have a M7504 QBUS Ethernet Adapter that I believe I can put in there. Might make for a nice tweener DEC PDP/11 with modern capabilities.



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