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- Path: sparky!uunet!decwrl!infopiz!mccall!info-pdp11-newsgate!list
- Newsgroups: vmsnet.pdp-11
- Subject: Re: Plessey memory
- Message-ID: <CMM.0.90.0.721081628.bqt@Bern.DoCS.UU.SE>
- From: Johnny Billquist <bqt@bern.docs.uu.se>
- Date: Fri, 6 Nov 92 21:27:08 MET
- Reply-To: bqt@minsk.docs.uu.se
- Organization: The Internet
- Return-Path: <pat+@transarc.com>
- In-Reply-To: Your message of 5 Nov 92 06:08:33 GMT
- CC: info-pdp11@transarc.com
- Lines: 35
-
- >In article <CMM.0.90.0.720790069.bqt@Bern.DoCS.UU.SE>, bqt@bern.docs.uu.se (Johnny Billquist) writes:
- >> Hi, I have a question about some memory I have for the 11/70.
- >> I have four memory boards, which was plugged into an 11/70, but
- >> someone has taken the memory boards out. The person who have the
- >> 11/70 said that the boards are 1Mb each, for a total of 4Mb.
- >> It is Plessey P/N 705075 Rev.A
- >> There is also four small homemade boards that goes with this, which
- >> the guy claimed was neccesary to get the memory working on the 11/70.
- >> Does anybody here have any clues they could give me?
- >
- > Hmmm. I'll try to overcome my disgust at the name Plessey - I once managed
- >an 11/34 that had _only_ the 11/34 CPU boards from DEC - everything else was
- >incompatible junk from Plessey - non-emulating disks, tapes, etc.
-
- :-)
-
- > Anyway... I assume you mean that the memory boards go into the CPU back-
- >plane, rather than in an external memory box? In that case, I'd assume that
- >the four small boards are bringing the necessary signals (probably out of
- >the slots where the cache/memory interface boards used to be) to wherever
- >the memory installs.
-
- Actually, I have no idea where the boards are supposed to be put. You
- might be right. Hmmm, this must be checked.
-
- > This sounds pretty far-fetched, though. The only company I know of that's
- >done anything like this is Setasi/DDS.
-
- Well, I don't know nothing about it. Didn't DEC come out with a new
- memory fot the 11/70 recently, which replaced the cache, and made the
- whole memory look like cache...?
-
- Johnny
- (Who is *happy*, because his ARP is now working on his RSX
- machine... :-)
-