On Fri, 2020-06-19 at 12:24 -0700, Robert Armstrong via cctech wrote: > It appears that my RK8E has a problem - it fails the diskless > control test > with > > .R DHRKAE.DG > SR= 0000 > > COMMAND REGISTER ERROR > PC:1160 GD:0000 CM:0001 > DHRKAE FAILED PC:6726 AC:0000 MQ:7777 FL:0000 > WAITING > > Ok, maybe a bad bit in the command register so I'll check it > out. But then > it dawns on me - how do you work on this thing? It's three boards > connected > with "over the top" connectors - you can't use a module extender on > it. > Worse, the M7105 Major Registers board is the middle one of the > stack! Is > there some secret to working on this thing? Has anybody fixed > one? Any > suggestions? > > I hadn't thought about it before, but the KK8E CPU would have the > same > problem. Fingers crossed that one never dies... >
I seem to recall that there were some "special" (read unobtanium) over the top connectors that permitted one of the boards in a board set to be up on an extender. TTFN - Guy
