| --- Mon Dec 9 2013 | 00:00 | |
| larsc | hm, does somebody know if there is a possibility to tell par to be a bit more conservative with placement regarding to timing | 09:29 |
|---|---|---|
| larsc | I often have the problem that the post routing timing check fails with a couple of picoseconds off. And it is more or less random when this happens and where this happens | 09:29 |
| ysionneau | anyone has any idea about my issue with PSW.dtlbe being cleared somehow? | 10:18 |
| ysionneau | it seems that running a bit of code leads to PSW.dtlbe being cleared | 10:20 |
| ysionneau | I thought it was caused by some exception code, but I don't see where since dtlb miss only reads PSW and never writes to it | 10:20 |
| ysionneau | so exception followed by eret should do the usual edtlbe <= dtlbe; dtlbe <= 0; and upon eret : dtlbe <= edtlbe; | 10:21 |
| larsc | yeay, just got my mixxeo board | 12:26 |
| larsc | it's smaller than it looks in the brochures though ;) | 12:26 |
| ysionneau | ah! | 13:20 |
| ysionneau | larsc: ask for a refund! :p | 13:21 |
| ysionneau | you've been lied to | 13:21 |
| ysionneau | I think since lekernel started to play with MEMS things he likes to do small things ;) | 13:21 |
| larsc | but it is right on time, friday is the last day of work before a month vacation | 13:31 |
| ysionneau | ah :) enjoy vacation ! | 13:32 |
| ysionneau | going somewhere? or just enjoying sitting idly in front of some screen @home? | 13:32 |
| larsc | first week will be my week off with nothing to do at all | 13:33 |
| larsc | and then the usual christmas roundtrip | 13:33 |
| larsc | visiting family, friends, etc | 13:34 |
| larsc | bought my four day 30c3 ticket yesterday, so I also have no excuse no to go there | 13:35 |
| ysionneau | héhé :) | 13:35 |
| ysionneau | it's cool that now you can buy tickets normally without destroying your mouse by overclicking | 13:36 |
| larsc | yep | 13:36 |
| wpwrak | because of larger space ? | 13:40 |
| ysionneau | yes | 13:44 |
| ysionneau | soon it's going to be the same for EHSM :) | 13:44 |
| Action: ysionneau is ordering a new mouse | 13:44 | |
| ysionneau | wpwrak: you should come by ! | 13:45 |
| wpwrak | EHSM ? yeah, would be tempting | 13:52 |
| ysionneau | :) | 13:54 |
| ysionneau | come on, to visit the particule accelerator | 13:54 |
| ysionneau | or show us in real life some anelok prototypes! | 13:54 |
| ysionneau | you could probably even do a presentation at ehsm about it | 13:55 |
| wpwrak | phew. if i'm still at the prototype level in june, then i'm already well past declaring defeat :) | 13:56 |
| ysionneau | eheh sure | 13:58 |
| ysionneau | anyway, you could present your work, (investigation, how you chosed components, the criteria etc) | 13:58 |
| ysionneau | pcb process, case process | 13:58 |
| ysionneau | I'm sure it would be as interesting as those TLDR (as Too Long Do Read) emails of yours :) | 13:59 |
| larsc | hm, just wondered what WSH3 is... | 14:05 |
| ysionneau | dunno, what is it? | 14:06 |
| larsc | but turns out I was just holding the card upside down | 14:06 |
| ysionneau | ahah :) | 14:10 |
| larsc | http://metafoo.de/wsh3.jpg | 14:10 |
| wpwrak | very easy to get wrong ;-)) | 14:13 |
| Action: ysionneau has a big EHSM poster in his appartment | 14:13 | |
| ysionneau | very nice on a white wall | 14:14 |
| ysionneau | with a bullet passing through a graphic card's PCB :) | 14:14 |
| wpwrak | ysionneau: (tl;dr) bah. and i try to lighten them up with pictures. maybe i should get a kitten. then the internet will be all over the project :) | 14:14 |
| ysionneau | ahahah | 14:14 |
| ysionneau | your mails are very good! | 14:14 |
| wpwrak | "can i haz anelok ?" | 14:14 |
| ysionneau | the pictures are a very good idea | 14:14 |
| larsc | only if the kitten solders the board | 14:15 |
| ysionneau | I wouldn't be against 1 or 2 lolcat though :D | 14:15 |
| ysionneau | if you incist ;) | 14:15 |
| lekernel | ysionneau, you should get a 2014 poster, with a custom-made X-ray photograph of a hand soldering a board :) | 14:15 |
| ysionneau | oh, I just noticed it's a 2014 edition picture | 14:16 |
| ysionneau | picture looks really good :) | 14:16 |
| wpwrak | larsc: hmm, maybe a baby dragon then. they should be pretty good at soldering :) | 14:20 |
| larsc | do I understand this correctly? when I have a OSERDES should fCLK = DATA_WIDTH x fCLKDIV | 15:18 |
| larsc | ? | 15:19 |
| lekernel | yes | 15:19 |
| lekernel | and you have to use PLL + BUFPLL to generate those, and deal with a bunch of bugs, restrictions and various annoyances | 15:21 |
| wpwrak | the curse of success: eventually, people will want to run your stuff under windows ... | 15:22 |
| ysionneau | :D | 15:22 |
| lekernel | the behaviour of those is very confusing at times. for example, the BUFPLL will never lock unless its *output* clock is properly connected to a ISERDES/OSERDES ... | 15:23 |
| larsc | hm, ok thanks | 15:29 |
| lekernel | https://events.ccc.de/congress/2013/Fahrplan/events/5417.html "Extracting keys from FPGAs, OTP Tokens and Door Locks" | 17:54 |
| larsc | hm, I get the feeling that my laptop is not able to provide enough power on the usbport for the mixxeo board | 19:46 |
| rjo | larsc: some usb hubs do in fact enforce the negotiated current limits. apple keyboard for example. others don't | 20:23 |
| davidc__ | Some enforce at 500ma; and some just have anti-short protection (usually a PTC) | 20:24 |
| davidc__ | .... and then the really cheap ones are limited by the maximum output of their power supply | 20:25 |
| larsc | the board just keeps reseting itself during the boot sequence | 20:36 |
| lekernel | larsc, try reflashing the ftdi-chip with the maximum current limit | 20:42 |
| lekernel | and good luck with the libftdi shitware... I'd recommend trying the windows tool | 20:42 |
| lekernel | boards were flashed with "MaxPower 0mA". doesn't cause problems on any of my computers. | 20:43 |
| davidc__ | yeah, don't touch libftdi with a million foot pole | 20:43 |
| davidc__ | Last time I had to do MFG-time serialization and programming of FTDI parts, I ended up rewriting libftdi in python since it wouldn't reliably program the EEPROM | 20:44 |
| davidc__ | (nor did it even use the right format!) | 20:44 |
| davidc__ | I might be able to dredge up + open-source that code if there's demand for it | 20:44 |
| lekernel | yeah, the quantity of bugs per line of code is mindboggling. I'd even bet it's higher than ISE's. | 20:45 |
| lekernel | if all else fails, this sort of thing can also help: http://www.streakwave.com/Itemdesc.asp?ic=5VUSB | 20:51 |
| larsc | I think I'll try a hub first | 20:53 |
| larsc | it worked when I booted the board for the first time, I got a bios promt and everything | 20:53 |
| larsc | but then at somepoint it started resetting itself | 20:53 |
| larsc | now after some cooldown time it is working again | 20:54 |
| mumptai | i can only recommand those 7-port hubs with 4A PSUs | 21:24 |
| rjo | anyone: any pointers to "the best USB hub"? 8-ports, supporting both self-powered and upstream-powered operation, stable, cascadable to the USB spec max, etc | 23:18 |
| rjo | or 1-to-6 ports. | 23:18 |
| --- Tue Dec 10 2013 | 00:00 | |
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