| kristianpaul | so.. migen is used at cern? | 00:55 |
|---|---|---|
| wpwrak | kristianpaul: it'll be blamed for the black holes eating the planet they're producing these days | 01:41 |
| wpwrak | of course, it won't be blamed for very long | 01:42 |
| kristianpaul | lol | 01:50 |
| Thihi | I just visited a local hackerspace. They had a box for higg's bosons. | 02:12 |
| wolfspraul | oops, seems emotions are flying high on the myhdl list | 04:26 |
| wolfspraul | seems everybody's nerves are a bit irritated :-) | 04:27 |
| wolfspraul | is either migen or myhdl a superset of each other, or are they trying to solve different problems? | 04:37 |
| wolfspraul | superset conceptually, not necessarily today... | 04:37 |
| cladamw | wpwrak, sorry. I don't understand your U18(ADV7125)'s central pad's connection to ground ? It's LQFP, if it's LFCSP_VQ then needs a central pad to ground. Did you mean this ? or I misunderstood ? | 06:00 |
| wpwrak | cladamw: oh, i see. right, it's not QFN. i was confused by the data sheet that shows the pin configuration only for QFN. didn't realize we had LQFP instead. sorry. | 08:01 |
| cladamw | wpwrak, R142, since 530 Ohm is not standard value but I checked http://www.yageo.com.tw/, there's 523 Ohm and 536 Ohm: http://octopart.com/partsearch#search/requestData&q=RC0402FR-07536RL | 08:25 |
| cladamw | so a 536 Ohm is okay to you ? | 08:25 |
| wpwrak | (R142) do you think it matters whether we have 530 or 560 ? it's almost within the 5% tolerance band anyway :) | 08:39 |
| cladamw | wpwrak, could you check "REFERENCE INPUT" on page 12 of ADV7125 ? there's a 560 Ohm mentioned: "Use of a fixed 560 © RSET resistor yields the analog output levels quoted in the Specifications section" | 08:40 |
| wpwrak | my reasoning is like this: a different value for Rset affects the VGA current/voltage. it should this change the intensity of the respective color channel. now, given that the receiving device (screen, etc.) has brightness and contrast controls anyway, i would expect that you can compensate for such issues easily | 08:40 |
| cladamw | i see your points, since tso i think 530 Ohm is deriving from Equation 1 for IOG (mA), so AD also knows a 560 Ohm is the most popular value in market that can get easily, so i think AD mentions a 560 Ohm. but true that if we change to 536 Ohm to close it. ;-) | 08:44 |
| Fallenou | 19:26 < sh4rm4> Fallenou, once the MMU is finished i'd be interested if musl libc could be ported to milkymist-linux < I haven't head about musl libc before, looks interesting though :) MMU is far from finished it needs tests, work, bugfix. I just implemented a few (16) tests, which are not yet passing for a reason I don't yet understand. I have been quite busy those days and I didn't work much on the MMU unfortunately. :/ | 08:48 |
| lekernel | kristianpaul: not as far as I know | 08:53 |
| lekernel | rhino != cern | 08:53 |
| lekernel | wolfspraul: yeah, amazing heh? "let's keep our tiny group closed and oblivious of what others are doing, because they might exploit us..." :) | 09:14 |
| lekernel | anyway, don't feed the troll ... | 09:14 |
| larsc | I bet some people consider you to be the troll ;) | 09:27 |
| lekernel | probably :) | 09:29 |
| Fallenou | he's tall, he's the troll ! | 09:32 |
| Fallenou | =) | 09:32 |
| wolfspraul | well, let's work on bringing people together | 12:33 |
| wolfspraul | it's not easy [talking about migen & myhdl] | 12:33 |
| wolfspraul | start with diversity, some are old, some young, some students, some industry veterans, some have 2h/week, some have nothing else to do, some know a lot, some know little, some want a lot, some want little. and so on and so on. | 12:34 |
| wolfspraul | maybe it's a miracle that any collaboration happens in this mess :-) | 12:34 |
| Fallenou | hehe | 12:42 |
| GitHub125 | [rtems-yaffs2] sebhub pushed 2 new commits to master: https://github.com/milkymist/rtems-yaffs2/compare/1a9b2b8...cbe7492 | 13:14 |
| GitHub125 | [rtems-yaffs2/master] Change mode of root and lost+found directory - Sebastian Huber | 13:14 |
| GitHub125 | [rtems-yaffs2/master] Update due to API changes - Sebastian Huber | 13:14 |
| lekernel | ah, great :) | 13:18 |
| lekernel | API changes at last | 13:20 |
| roh | baaah | 15:13 |
| roh | wolfspraul: in opensource there ALWAYS need to be 2 slightly different implementations for the same problem | 15:14 |
| roh | gcc and llvm... kde and gnome ... qt and gtk .... emacs and vim... | 15:14 |
| roh | ;) | 15:14 |
| qi-bot | The firmware (using branch) build was successful, checkout the VERSIONS for detail, see images here: http://fidelio.qi-hardware.com/~xiangfu/build-milkymist/milkymist-firmware-20120313-1456/ | 15:36 |
| lekernel | http://inst.eecs.berkeley.edu/~cs250/fa11/handouts/tutorial.pdf | 17:07 |
| Action: wpwrak hates half-day blackouts | 17:49 | |
| larsc | don't party so hard ;) | 17:54 |
| wpwrak | i'll tell that to my electricity company ... | 17:55 |
| larsc | ah, a power blackout and not a wpwrak blackout | 17:57 |
| kristianpaul | lol | 17:57 |
| kristianpaul | but, whas it scheduled? | 17:57 |
| kristianpaul | may be adverticed on local the radio, by 4AM ;) | 17:58 |
| kristianpaul | oh hard words.. | 18:01 |
| kristianpaul | :| | 18:03 |
| Action: lekernel wonders what Buenos Aires is like. should travel there someday... :) | 18:04 | |
| wpwrak | kristianpaul: scheduled ? you're kidding, right ? ;-) | 18:07 |
| kristianpaul | wpwrak: perhaps | 18:07 |
| kristianpaul | but half-day sounds serious for not been schedule/warned perhaps?? | 18:07 |
| kristianpaul | ;-) | 18:07 |
| wpwrak | lekernel: it's definitely worth a visit :) and we don't always have blackouts. although we'll probably see more of them for a while | 18:08 |
| wpwrak | kristianpaul: i doubt it was planned. i don't think they do any scheduled maintenance. if it fails, they fix it. maybe. | 18:09 |
| Action: kristianpaul want vist la patagonia | 18:09 | |
| kristianpaul | ok | 18:09 |
| kristianpaul | so you may consider arrange energy alternative sources considering the wind aroud :-) | 18:10 |
| qi-bot | The firmware build was successful, see images here: http://fidelio.qi-hardware.com/~xiangfu/build-milkymist/milkymist-firmware-20120313-1746/ | 18:26 |
| wolfspraul | roh: oh sure [several alternatives for same problem] I was trying to understand migen & myhdl better | 23:41 |
| lekernel | you'll probably learn on this topic as much from this thread as from your local pub's counter :-) | 23:43 |
| wolfspraul | that's why I'm asking here | 23:43 |
| wolfspraul | I could go through the myhdl archives, seems the clue is there - but I'm a little lazy :-) if no answer now, it will become clearer over time | 23:44 |
| wolfspraul | will there be a big 'switch-day' where the m1 soc switches to migen? | 23:44 |
| lekernel | in a few words, myhdl is very close to what verilog/vhdl can already do, while migen allows you to use more python features, and also comes with some library components | 23:46 |
| lekernel | also, myhdl can model asynchronous designs while migen cannot (but it can be interfaced easily to asynchronous bits) | 23:46 |
| lekernel | and up until recently, migen had no way to write test benches in python, while this was always an interesting feature of myhdl | 23:48 |
| lekernel | and yes, there will be a big switch-day. | 23:48 |
| lekernel | wpwrak: yeah, they're not consistent about that resistor value | 23:51 |
| wpwrak | they're not even consistent about their voltage reference ;-) | 23:51 |
| wpwrak | at least the general configuration (termination resistances, and single vs. doubled ended) seems to be correct | 23:52 |
| wolfspraul | lekernel: ah nice, that's very helpful. thanks! | 23:56 |
| lekernel | interesting ethernet findings... btw, some rc1 boards have the original Molex P/N, and ethernet works on them | 23:56 |
| wolfspraul | huh? problem with Ethernet? | 23:57 |
| wpwrak | hmm. the SN75HVD12 is a bit weird. what on earth is that little NAND gate doing there ? the function tables are remarkably silent about it | 23:57 |
| lekernel | wolfspraul: well, the chip deals with it... see Werner's email | 23:58 |
| wpwrak | lekernel: i think ethernet is extremely robust. so "works" may mean a number of things :) | 23:58 |
| wolfspraul | can we improve something in R4? (will read mails of course...) | 23:58 |
| wpwrak | what i'm not sure about is how those transformers work. we'll need joerg for that :) | 23:59 |
| wpwrak | wolfspraul: dunno. it could also be an incorrect data sheet | 23:59 |
| --- Wed Mar 14 2012 | 00:00 | |
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