On Sun, Nov 6, 2016 at 6:13 PM, Joseph Zatarski <jzat...@illinois.edu> wrote:
> >On 2014-10-26 3:07 PM, Toby Thain wrote: > >>* On 21/10/14 7:38 AM, Noel Chiappa wrote: > *>>>* > From: Toby Thain > *>>>>>>* > Looking to see what the internal self-test returns as an > error > *>>>* code > *>>>* > (that can be done with console ODT, it doesn't need a > program) is > *>>>* > probably the first step in diagnosing. > *>>>*... > *>>* OK, after powerup, the bits of the VAR register (e/w/p 2000192c) are > *>>* D800, i.e. the test result bits VAR12:10 are 1,1,0 - meaning RAM test > *>>* failed. > *> > >Hi all, > > > >As an update to this project, I can report that the DELQA has been > >repaired with four new static RAM chips, and now the MicroVAX II's > >network is fully working (including netboot). > > > >Credit due to Joe Zatarski (joe_z) who did a beautiful job of > >desoldering and putting sockets in for the four RAM chips. > > > >--Toby > > Glad to have helped :) > > Joe Zatarski > > >>>>* I must be doing something wrong running the test manually, though - > *>>>>>>>* d/w/p 2000192c 2000 > *>>>>* Just leaves 2000 in the VAR register, permanently. > *>>>>* --Toby > *>>>>>>>>>>* Noel > *>>>>>>> > I love reading stories of component-level repair. -- Ian S. King, MSIS, MSCS, Ph.D. Candidate The Information School <http://ischool.uw.edu> Dissertation: "Why the Conversation Mattered: Constructing a Sociotechnical Narrative Through a Design Lens Archivist, Voices From the Rwanda Tribunal <http://tribunalvoices.org> Value Sensitive Design Research Lab <http://vsdesign.org> University of Washington There is an old Vulcan saying: "Only Nixon could go to China."