aps@decvax.UUCP (Armando P. Stettner) (08/24/84)
> From: Doug Kingston <dpk@BRL-TGR.ARPA> > > 4.2 WILL run on a 785 but only with the fixes for the 64K > memory controller (the new memory controller). Your local > 4.2BSD system hacker should be able to obtain these fixes. > They are widely available. > > -Doug- Doug, I do believe that 4.2 will come up on the 785 (or a 780 with the MS780-E) with out the fixes for the new memory controller. I think that certain error reporting "tasks" will not work or be started in the kernel and that the annoying message of unknown Nexus type will be printed at auto-configure time. Let me know if this is not the case. Armando.
chris@umcp-cs.UUCP (08/25/84)
> From: aps@decvax.UUCP (Armando P. Stettner) > > From: Doug Kingston <dpk@BRL-TGR.ARPA> > > > > 4.2 WILL run on a 785 but only with the fixes for the 64K > > memory controller (the new memory controller). Your local > > 4.2BSD system hacker should be able to obtain these fixes. > > They are widely available. > > > > -Doug- > I do believe that 4.2 will come up on the 785 (or a 780 with > the MS780-E) with out the fixes for the new memory controller. > I think that certain error reporting "tasks" will not work > or be started in the kernel and that the annoying message of > unknown Nexus type will be printed at auto-configure time. > Let me know if this is not the case. If the 785 really is ``bug-compatible'' with the 780 (I like that phrase!), then Armando Stettner has got it exactly. The only thing that happens if autoconf doesn't recognize the nexus type is that it gets ignored. For memory controllers, this just means you don't get soft ECC reports. (Hard errors cause SBI faults anyway, so you *do* get notified about those, if kinda ``the hard way''.) -- In-Real-Life: Chris Torek, Univ of MD Comp Sci (301) 454-7690 UUCP: {seismo,allegra,brl-bmd}!umcp-cs!chris CSNet: chris@umcp-cs ARPA: chris@maryland
kermit@BRL-VGR.ARPA (08/28/84)
From: Chuck Kennedy <kermit@BRL-VGR.ARPA>
Armando has correctly diagnosed the result. I know since our
64K memory controller worked on our 780 without modification.
However, it's nice to have the ECC error reporting!
Best,
-Chuck Kennedy
(301) 278-6640
AV 283-6640
FTS 939-6640
Arpanet: Kermit @ BRL
UUCP: ...!{decvax,cbosgd}!brl-bmd!kermit
Postal:
Charles M. Kennedy
Advanced Computer Systems Team
Vulnerability Methodology Branch
Vulnerability/Lethality Division
U.S. Army Ballistic Research Laboratory
Attn: DRXBR-VLD-V (Kennedy)
APG, MD 21005