<whitequark>
cr1901_modern: yes, clifford does that sort of thing quite a bit
<cr1901_modern>
whitequark: I would imagine so, but (assuming I can get the EDIF generation to work) Idk whether the bug would be in yosys or Migen if I found a case where the same Migen code generated two different behaviors for migen => verilog or migen => edif
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* cr1901_modern
mulls this over a bit...
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<rqou>
so i just found out that i might potentially have an excuse to travel to China/HK for a while (aka i can get my parents to pay for the plane ticket :P )
<rqou>
whitequark: potential meetup?
<rqou>
needs a bunch of schedule juggling though
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<rqou>
hrm, i think i found a possible reason why the cable modem here is pretty unreliable
<rqou>
so there's about 60Vac between the cable shield and the chassis of a nearby computer
<rqou>
(yes, it's real and not phantom; you can feel it with your fingers)
<rqou>
(so it's not capacitive coupling)
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<jn__>
rqou: ouch
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<whitequark>
rqou: except I'm not in HK right now actually
<whitequark>
as for 60Vac
<whitequark>
so someone connected it to Vmains/2?
<whitequark>
been there seen that
<whitequark>
killed a modem accidentally
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<Guest85881>
are you sure it's not a particularily high-value capacitor (or one getting bad)?
Guest85881 is now known as gruetzkopf
<gruetzkopf>
better.
<gruetzkopf>
i've had some cases float at ~115V (europe). most of them go to zero even over 10M of a multimeter, but some were more stubborn (milliamp range of ground return current after grounded)
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<azonenberg>
gruetzkopf: i have seen worse
<azonenberg>
cable shield at 120Vrms low impedance
<gruetzkopf>
yep
<azonenberg>
A friend had a TV plugged into it
<azonenberg>
on a 2-prong plug
<azonenberg>
the entire chassis of the TV was floating at mains
<azonenberg>
then he plugged in an HDMI cable
<nats`>
i've had some cases float at ~115V (europe). <= 250
<azonenberg>
and ran it to his new desktop computer
<azonenberg>
Which had a grounded plug
<azonenberg>
there was visible arcing, when i got there to investigate the end of the cable had carbon residue on it
<azonenberg>
this was like a dead short from shield to mains, not a little bit of capacitive coupling or something
<azonenberg>
you could have powered a light bulb off that shield
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<nats`>
azonenberg I have trouble to find bufg and ibuf delay in the spartan 6 DS