#milkymist IRC log for Thursday, 2012-04-12

cladamwwpwrak, i'm considering let LINE_OUT connector to adjacent to LINE-IN con. together as U23 is within them which is not good for diagnosis.08:44
wpwrakcladamw: hmm, let's see ...11:53
wpwrakcommercially available dual 3.5 mm jacks have a center to center distance of 15 mm11:54
wpwraklike we do in M1rc311:54
wpwrakadam really needs a permanent internet connection ...11:56
cladamwawpwrak, no, i have two laptops. ;-) In Windows I also installed an irc server, sorry11:58
cladamwawpwrak, i prefer to use current two con.  rather than finding a dual 3.5 jack11:59
wpwrakoh sure, two connectors is okay12:00
cladamwawpwrak, or place parts in bottom side( which is not I want ).12:00
wpwraki just looked for indications of what distances are used12:00
cladamwai see12:00
cladamwawpwrak, http://en.qi-hardware.com/wiki/File:M1r4_j1j2u23.png12:01
cladamwasince the case should already being not same as rc3. so i planned to like this.12:02
wpwrakif we consider that a user may want to connect 6.3 mm jacks, then at least about 15 mm center-to-center distance would be reasonable. a 6.3 mm jack has an outer diameter of about 13-14 mm12:06
wpwrak(6.3 mm jacks) via adapters, of course12:06
cladamwahmm ... 6.3 mm jack seems a popular one for the musical instruments. I hope you are not serious on this, are you ?12:10
wpwraksemi-serious :)12:12
wpwraki'm not entirely sure whether professional users would trust a 6.3 mm to 3.5 mm adapter12:12
wpwrakbut i've seen a fair bit of 6.3 mm in higher end equipment. so i can very well imagine that someone out want to connect to that12:13
wpwrakand if the spacing is too tight, things get messy12:13
wpwraklooking at dual 3.5 mm stereo connectors ... they look a bit scary. quite tall (24.0-26.7 mm) and probably need a screw for stress relief12:15
wpwraklike this  http://products.cui.com/GetSpecForDigiKey.aspx?MFGNum=SJD-3512-45  or this  http://products.cui.com/GetSpecForDigiKey.aspx?MFGNum=SJD-3510-4512:16
cladamwawpwrak, yes, when i went to a swimming poor which they play music by huge speakers with 6.3 mm pluger, their instruments can set a lot audio effects and equalizers.12:16
wpwrakso that's probably not a viable alternative. both would have 15.0 mm center-to-center, though12:16
cladamwathe rear of intruments are all 6.3mm receiptacles.12:17
cladamwawpwrak, yeah...the length can't be used in m1, too waste space.12:17
wpwrakhow about moving U23 under the expansion board ? between J21 and U1 ? there seems to be a bit of free space12:19
cladamwawpwrak, the expansion board can do such 6.3mm CD-in then use SPDIF-out. :-)12:20
cladamwasure, why not. :) but i was just considering to free space under expansion area. Since who knows will build great extra-value-added for m1 though expansion. I know like you are !12:23
wpwraki'm not so much worried about free space in general but about the maximum height of the things under the expansion board. it seems that U23 wouldn't make a difference in this regard12:24
cladamwaso i meant if m1r4's case doesn't need to same as rc3 as dvi-i connector-variant there.12:25
cladamwaoah...yeah. the U23's height is not too tall, so if you prefer to place there, then we go there. :-)12:26
wpwrakyes, i'd rather have U23 under the expansion board than the two audio jacks very close to each other12:32
wpwrakeven without 6.3 mm adapters, it's not very convenient to have very closely spaced connectors12:33
wpwrak(case) yeah. it'll be a new design. that much is certain :)12:33
wpwrakunless xiangfu wants to try his disc-cutting drill ;-)12:34
cladamwawpwrak, like this. http://en.qi-hardware.com/wiki/File:M1r4_j1j2u23.png :-)12:35
wpwrakthat's the same as before ?12:36
cladamwaupdated. :-) alright, collecting feedbacks here: http://en.qi-hardware.com/wiki/Milkymist_One_R4_Layout_History12:37
cladamwasorry that they are in Chinese. :)12:38
wpwrakyeah, the update looks good12:38
wpwrak(cn) ;-)12:39
cladamwayour internal usb (with atusb dongle) I'll add it.12:39
cladamwawpwrak, another question, where we supposedly place those un-used LEDs ?12:45
cladamwawpwrak, current TPs for LEDs-M are under bottom side. I'm thinking to place them to top side for easy. Is it okay to you ?12:46
wpwraki don't have a place for them. what could be a little interesting is to have a few of them on the pcb edge, below the eastern edge of the expansion board12:47
wpwrakthat way, they could be used to signals things there, if someone wants that12:48
wpwraktop side is fine with me12:49
cladamwastill have 8 un-used LEDs, so few of them to the eastern edge of expansion board, or all ?12:50
wpwrakyour choice :)12:50
cladamwa(LEDs TPs on top) okay. tks.12:50
cladamwa(reserved leds) http://en.qi-hardware.com/wiki/File:M1r4_place_for_unused_leds.png12:56
wpwrakah, and we can DNP the "reserved" LEDs anyway. i would place them in the prototype run, to check things, but then we can save wolfgang a few cents :)12:56
wpwraknice :)12:56
cladamwaplace them as the idea you gave, but we DNP them in m1r4.12:57
wpwrakbut there's not enough room for all of them. at least not if we design for side-facing leds, which have their long side parallel to the pcb's edge12:57
wpwrakactually ... they may just fit :)12:58
wpwrakthe green area is 60 mm on my screen and you can probably have one LED every 8 mm, so that would work12:58
cladamwarough just for illustration for house, I'll tell them to centralize them. :-)13:01
GitHub185[llvm-lm32] jpbonn pushed 1 new commit to master: http://git.io/c4y35w19:28
GitHub185[llvm-lm32/master] Added note on building CompilerRT, corrected some PATHS in directions. - jpbonn19:28
[florian]hey there19:39
[florian]anyone seen sebastien recently?19:39
larscseen on IRC?19:41
wpwraki think he's traveling at the moment19:49
kristianpaulhey!, milkymist is mentioned here  http://michelebavaro.blogspot.com/2012/04/spring-news-in-gnss-and-sdr-domain.html20:16
GitHub172[llvm-lm32] jpbonn pushed 1 new commit to master: http://git.io/HHZCNw20:23
GitHub172[llvm-lm32/master] Added note for OSX. - jpbonn20:23
Fallenounice link kristianpaul :)20:26
FallenouI finally got the MMU to work on the FPGA20:27
FallenouI mean, to pass the 15 test cases without crashing the soc :)20:27
FallenouWill commit very soon20:27
kristianpaulFallenou: oh !20:36
kristianpaulwhat you did it to make it work=20:36
kristianpaulsorry i havent read logs since sunday..20:36
FallenouI forgot to take into account some internal signaling of the pipeline20:38
FallenouI am not totally sure that it's working 100% correctly, I only tested 15 different load/store configurations20:44
FallenouI will add more tests with more instructions to stress test the pipeline a little bit20:44
FallenouI tested all the instructions sequences of store (nop)* load (nop)* with 6 instructions (the pipeline size)20:46
Fallenoulike store load nop nop nop nop , store nop load nop nop nop etc20:46
FallenouAnd puuuush https://github.com/fallen/milkymist-mmu/compare/5b90cf4bb2...5cf64084e321:46
Fallenougn8 !21:46
wpwrakhello traveling salesman ;-)22:02
wolfspraulFallenou: wow congrats!23:17
wolfsprauland safe travels Sebastien...23:17
wolfspraulsafe and happy :-)23:18
--- Fri Apr 13 201200:00

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