On 1/11/19 2:25 PM, Allison Parent via cctalk wrote: > Most Probable cause is interrupt grant is broken. For most microspheres > backplanes the first three slots are different than remaining.
Yes, that's true. But the problem doesn't occur until the 5th slot. And a quick look at the C-D edges of the board shows that the BUS Grant lines are jumpered. So the 2 A-B slots should pass the grants just fine. I saw no mention about these not working in A-B/A-B backplanes. The only mention the docs make at all is that the only lines used on C-D slots is power. bill > > > Phoned this in! > > > On Jan 11, 2019, at 12:28 PM, Bill Gunshannon via cctalk > <cctalk@classiccmp.org> wrote: > > > Well, it has been so long since I had to put together an > entire system I forgot what fun it can be. > > With almost documentation I was able to configure 4 1meg > memory modules and I tested them all in my 11/23+ box. > > > KDJ11-B with 4 different (but similar) memory cards. > "MAP" option of the KDJ11 shows 4 meg (minus the I/O > Page) and all the right CSR's for the first four blocks. > > Really wanted to make this a deskside so I moved the > cards to a MicroPDP box (Yes, I have a coule of the > deskside pedestals). Power on, Memory CSR error. > Move then back to the 11/23+ works fine. If I only > put the first three in the MicroPDP box it works. > But as soon as I try to put in a fourth module I > get the memory CSR error. Tried different cards > (although working in the 11/23+ box would make me > think it is not a problem with the card) no help. > > Anybody care to take a stab at what might be causing > this problem? > > bill >
