01:41 <GitHub50> [smoltcp] jhwgh1968 commented on issue #253: Since @whitequark elsewhere said that he actually looks at the full diff, I thought I might as well squash these and skip a step if he approves. https://github.com/m-labs/smoltcp/pull/253#issuecomment-408285591

07:54 <sb0> so, I received new saymas from greg today

07:54 <sb0> one RTM has broken DACs

07:55 <sb0> one AMC has broken SDRAM

07:55 <sb0> and the remaining AMC+RTM combination has the PRBS bug

07:56 <sb0> so, of course I still can't test inter-board sync

07:56 <sb0> what a mess

07:57 <sb0> oh the "broken DACs" RTM seems to have a HMC830 problem, too

07:57 <sb0> or maybe only a HMC830 problem.

08:00 <sb0> I probably told him 5 or 6 times to test before shipping, but whatever

08:01 <sb0> at least I can repro the PRBS problem now

08:05 <GitHub-m-labs> [artiq] sbourdeauducq commented on issue #1080: > Is this problem caused by the RTM side or the AMC side? (swap RTMs between working and non-working systems)... https://github.com/m-labs/artiq/issues/1080#issuecomment-408344408

08:09 <GitHub-m-labs> [artiq] sbourdeauducq commented on issue #1080: Additionally, there is a lot of DRTIO data corruption when using the RTM that has this bug with the satellite gateware. https://github.com/m-labs/artiq/issues/1080#issuecomment-408345484

08:10 <GitHub172> [smoltcp] pothos commented on pull request #236 867edfe: I think it would be better to use 18 here as correct maximal length because otherwise you could just use `EthernetFrame::<&[u8]>::header_len()` which is 14.... https://github.com/m-labs/smoltcp/pull/236#discussion_r205697863

08:20 <GitHub-m-labs> [artiq] gkasprow commented on issue #1080: @sbourdeauducq I shipped you 2 sets of boards - one AMC that has troubles with SDRAM, another AMC is working fine and 2x RTM.... https://github.com/m-labs/artiq/issues/1080#issuecomment-408347887

08:42 <sb0> of course ethernet doesn't work either ...

09:40 <sb0> now they work in the µTCA crate though. surprising!

09:42 <sb0> oh, the crate just shut down out of the blue after a few minutes. right. that's more like what I expected

09:51 <sb0> ... but that's just a mechanical problem with the PSU hotplug handle, it seems.

10:00 <GitHub-m-labs> [artiq] sbourdeauducq commented on issue #1080: > The problem appears to be triggered by the RTM side.... https://github.com/m-labs/artiq/issues/1080#issuecomment-408372833

10:06 <GitHub-m-labs> [artiq] sbourdeauducq commented on issue #1080: Though, there is still insanity with the problematic RTM. The PRBS test actually fails intermittently:... https://github.com/m-labs/artiq/issues/1080#issuecomment-408374190

12:05 <GitHub-m-labs> [artiq] hartytp commented on issue #1080: @sbourdeauducq I've got my AMC back now, so can do tests if that's helpful. But, it sounds like it might be better to wait for Xilinx to get back about the termination issues first? https://github.com/m-labs/artiq/issues/1080#issuecomment-408399471

20:10 <GitHub-m-labs> [artiq] jbqubit commented on issue #1080: > all the boards I received are broken in one way or another... https://github.com/m-labs/artiq/issues/1080#issuecomment-408526377