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- Newsgroups: vmsnet.pdp-11
- Path: sparky!uunet!haven.umd.edu!darwin.sura.net!zaphod.mps.ohio-state.edu!caen!batcomputer!munnari.oz.au!uniwa!cujo!cc.curtin.edu.au!zrepachol
- From: zrepachol@cc.curtin.edu.au
- Subject: Re: 11/94 Upgrade problems....
- Message-ID: <1992Nov19.202849.1@cc.curtin.edu.au>
- Lines: 57
- Sender: news@cujo.curtin.edu.au (News Manager)
- Organization: Curtin University of Technology
- References: <1992Nov12.151415.21751@thijssen.nl>
- Date: Thu, 19 Nov 1992 11:28:49 GMT
-
- In article <1992Nov12.151415.21751@thijssen.nl>, geveld@thijssen.nl (Ge v.d. Veldt) writes:
- >
- > Hello,
- >
- > We experienced 2 problems while upgrading a PDP11/84 to a PDP11/94.
- > The PDP 11/84 contains very old hardware such as:
- >
- > Emulex SC21 diskcontroller with M2322 Fujitsu disk
- > RL11 diskcontroller
- > Delua ethernet controller
- > Emulex TC12 tapecontroller with M890 Cipher drive
- > DL11-W asynchronous controller
- > DZ11 asynchronous Multiplexer
- > DT07 unibusswitch
- > ICR11 I/O subsystem
- > Fisher and Porter CCM communication controller
- >
- > Problem 1:
- > The RSX11M-plus operating system crashes at random time intervals with the
- > following console message:
- >
- > XXXXXXXXX Exec. parity error stop XXXXXXXXX
- >
- > After that the CPU halts, no time to generate an errorlog entrie. The same
- > system has no problems when the CPU is a PDP11/84.
- >
-
- Have read the mail you sent, 4 ICRs!! The question that occurs first is Where
- did you get the M-Plus ICS/ICR driver? I assume you are using the DT07 as a
- manual switch between 2 CPUs.
-
- > Problem 2
- > The PDP11/94 processor seem to have another power-up sequence compared with
- > the PDP11/84. When the DT07 has selected the PDP11/94 CPU for unibus exten-
- > sion the frontpanel halt/reset tockle switch will bring the CPU in a not
- > accessable state when manipulated. The only way to get out of that state
- > (without powering down the system) is to deselect the unibusextension via the
- > DT07 frontpanel switches and restart the 11/94 again. This time the normal
- > powerup sequence will take place.
- >
- > WHO HAS ANY SUGGESTIONS FOR THESE PROBLEMS????
- >
-
- There was a simular problem with the 84 as I remember. This was fixed by an ECO
- to the CPU to increase the reset time or some such. Best refer this one to some-
- one in Utrecht I think. Good luck finding a Digit who knows what an 11 is!!
-
- As to the UDA related problem I mentioned before, I think the NPG line was the
- main culprit. The fix was to replace a couple of the wire runs in the DKs with
- twisted pair. If you have access to the 11 fische library, its in there in the
- ECO listings. You will need to do the same fix to the DT07, ICS/ICR bachplanes
- and all the DD-11s if its not been done. Can you run the system without the
- ICS/ICR? The other errors hint that exec I-space is being corrupted, poss by
- erratic DMA.
-
- ~Paul
-
-