<GitHub-m-labs>
[artiq] hartytp commented on issue #1129: @gkasprow well, since we are most likely going to scrap the HMC7043 in the next revision, is it worth tracking this down further? I'm implementing the new synchronization scheme right now... https://github.com/m-labs/artiq/issues/1129#issuecomment-422714077
<hartytp>
sb0: building sayma rtm with latest migen, I'm getting errors like "ERROR: [Synth 8-3966] non-net port hmc_spi_clk cannot be of mode inout: `default_nettype is "none" [/home/tph/scratch/artiq_sayma/rtm_gateware/rtm.v:50] "
<hartytp>
is this related to 2a7e33e9a46a4dd764faa1694b93e3223e716577
<sb0>
ah, I would have been surprised if at least one shitty EDA tool didn't choke on default nettype none
<cr1901_modern>
How many years of your life do you think you've lost trying to search for the subset of Verilog that makes all synthesizers happy?
<hartytp>
ta
<hartytp>
yes, that did it
<sb0>
right now it seems this vivado trash is miscompiling the drtio packet serialization logic for the read_reply packet, after I made unrelated changes to implement switching
<sb0>
for some reason, having large registers and doing bit shifts on them seems to tickle bugs
<sb0>
this bullshit wasted like a month when implementing DMA
<hartytp>
nasty
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<sb0>
hartytp: things other than inputs are working on the other hand
<sb0>
narrowing the problem down; it's the satellite sending the wrong packet content; the packet length is correct but all bits after and including position 32 are zeroed out
<sb0>
if I hardcode some other value there, then it goes through
<sb0>
I guess I can rewrite the value generation code in a way that makes the vivado garbage happier
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