On Thu, Jul 5, 2018 at 4:43 PM, Noel Chiappa via cctalk <cctalk@classiccmp.org> wrote: > >> I'll add the info to the MSV11-J page on the CHWiki, once I have it. > > > Alas, it's down at the moment ... but once it's back, I'll get them > > right up. > > It's back, and I've added the chip info for the low 1MB bank: > > http://gunkies.org/wiki/MSV11-J_QBUS_memory#Technical_information > > I'll do the other bank 'soon' (I first have to tweak my 'scope loop program, > to turn on memory mapping, to get to the high bank). Here's my test rig, BTW: > > http://ana-3.lcs.mit.edu/~jnc/tech/pdp11/jpg/MSV11JTester.jpg > > Simple, but it did the job! > > Noel
I don't see any chip info update at that #Technical_information page. It currently says "This page was last modified on 26 December 2016, at 19:13" What signal were you probing on the M8186 KDF11-A board? If you run the XXDP VMJAB0 diagnostic and there are failures, does it tell you which data bit and/or ECC bit positions have failures? I suppose it must, otherwise there wouldn't have been much point in the bit mapping exercise.
