RetroNewbie
Experienced Member
After getting my QBUS PDP-11 assembled from boards up and running, I decided to slowly get all the bargains that I can on UNIBUS cards to hopefully (one day) replicate what I did with QBUS, even if I know it'll be much harder. I still have to learn a lot about UNIBUS and I wanted to know your opinion about what big differences should I be in the lookout for between the two buses.
Some of my questions are:
The boards
This is the only really interesting board, it's an M8727-CX. It should have 256KB of memory, and I have some questions about it:
This should be one board out of two that is part of a controller for SDI disk driver.
I also got two RA81 SERVO CONTROL board that I was planning on using to scavange parts, unless anyone needs them for replacement parts or anything else.
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Thank you in advance for the help!
Some of my questions are:
- is board compatibility as straight forward as in qbus systems?
- is wire-wrapping the backplane needed for a working system and it is always configuration dependant?
The boards
This is the only really interesting board, it's an M8727-CX. It should have 256KB of memory, and I have some questions about it:
- does it need a controller board to get interfaced with a system?
- Does anyone have a part number or a datasheet for this RAM ic?
This should be one board out of two that is part of a controller for SDI disk driver.
- How hard would it be to get the other board?
- Is it even worth it and usable?
I also got two RA81 SERVO CONTROL board that I was planning on using to scavange parts, unless anyone needs them for replacement parts or anything else.
'
Thank you in advance for the help!