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[00:11:44] <Tom_L> possible new position sensor:
http://www.mouser.com/new/Texas-Instruments/ti-ldc1000-data-converter/?utm_medium=email&utm_source=september2013&utm_campaign=cm-enews-general&utm_content=featuredlm
[00:12:18] <Tom_L> inductance to digital converter
[00:12:46] <jdh> an uncased prox switch?
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[00:15:11] <Tom_L> possibly a spindle encoder?
[00:15:20] <Tom_L> etc
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[01:05:07] <andypugh> It appears to need a coil, and seems to require an SPI interface for setup.
[01:05:21] <Jymmm> http://www.businessinsider.com/cop-tickets-blackhawk-pilot-2013-9
[01:14:51] <archivist_> it will be ok for a paint/coating/anodizing thickness meter
[01:19:29] <andypugh> Two of them at 90 degrees and an eccentric ring should give a decent absolute encoder.
[01:19:56] <andypugh> Like a cheap resolver.
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[01:20:12] <andypugh> Time to snooze.
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[12:33:17] <DJ9DJ> tag
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[16:11:16] <andypugh> archivist:
http://www.youtube.com/watch?v=kJ8kyC_bpHs
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[16:13:55] <archivist> A H.R. Robinson design, cnc would be so much easier
[16:14:34] <andypugh> It is based on a 1920s design (perhaps earlier)
[16:14:52] <andypugh> Though the addition of chase-screwcutting is novel, I think.
[16:16:36] <archivist> I though most moved the tool not the work
[16:17:17] <andypugh> The fact that the work stops while the cut resets is quite a plus. That is something that a CNC X-axis couldn't do.
[16:20:26] <archivist> if the tool is retracted quick enough, no need to pause the work
[16:22:28] <archivist> I do wonder if a hal geared version would be more accurate as I can see a small rocking(rotation) motion there
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[16:26:01] <archivist> and can hear some chatter
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[16:48:05] <andypugh> Retracting tools quickly on a CNC lathe isn't all that easy.
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[16:48:26] <andypugh> Though back-gears on the lathe would help.
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[16:48:44] <andypugh> (when I do silly things like hexagons I have to turn the spindle by hand)
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[16:52:51] <archivist> a cam on a servo
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[16:57:47] <IchGuckLive> hi all
[17:01:02] <uw> HELLO
[17:01:06] <IchGuckLive> B)
[17:01:12] <jdh> HI THERE!!!
[17:01:42] <jdh> if you were uvw, you could be 3-phase.
[17:01:54] <IchGuckLive> or Foam
[17:02:16] <IchGuckLive> EDM as well
[17:02:18] <JT-Shop> or plastic if you were uhmw
[17:02:35] <uw> i think my motors 3 phase, but i'm only running on 2 winding :S
[17:02:47] <jdh> that's why you are unbalanced.
[17:04:05] <uw> could be...could be
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[17:30:15] <IchGuckLive> friday BBQ im off by
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[18:59:14] <kengu> i was today printing a vinyl cutter blade holder attachment for a reprap (mendel90)
[18:59:29] <kengu> an improved version of older one
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[19:00:14] <kengu> and then I did come around a dremel holder for same kind of purpose
[19:00:29] <kengu> I will need to test that some day
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[19:26:53] <Jymmm> HAHAHAHAHA
http://www.usatoday.com/media/cinematic/video/2882837/spying-on-lovers-at-the-nsa-usa-now-video/
[19:26:55] <Jymmm> disable adblock to see the video
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[19:30:33] * JT-Shop can't look
[19:45:35] <kengu> i did see the video with adblock on
[19:46:02] <kengu> but yeah. just ordered some more goodies from china
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[19:52:20] <CaptHindsight> http://www.3ders.org/articles/20130926-startup-developing-direct-to-metal-3d-printer-for-makers.html unfortunately slow and expensive Liquid Metal Jet Printing (LMJP)
[19:56:03] <CaptHindsight> Build Speed: 20 mL/h
[19:56:04] <ChristianS> CaptHindsight: as for metal 3d printing, is there a more affordable way?
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[19:57:10] <CaptHindsight> ChristianS: laser or casting
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[19:59:41] <ChristianS> CaptHindsight: direct metal laser sintering? don't know any makers/open source projects in that area yet, though it would be very cool...
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[20:00:48] <CaptHindsight> oh for DIY, I gave up keeping track, they even managed to make a SLA printer worse than a glue gun
[20:01:22] <CaptHindsight> http://www.kickstarter.com/projects/117421627/the-peachy-printer-the-first-100-3d-printer-and-sc
[20:01:52] <CaptHindsight> one step forward, two steps back
[20:02:04] <ChristianS> well, for the cost it's a pretty cool project, and with some novel ideas
[20:02:28] <CaptHindsight> similar to a lava lamp, fun to look at
[20:02:56] <CaptHindsight> but pretty useless
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[20:13:51] <PCW> micges: you need version 14 firmware to have space 4
[20:14:28] <micges> yes I got 13
[20:14:40] <micges> is it in zip file configs?
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[20:15:43] <PCW> not yet, building all configs now (takes hours)
[20:16:18] <micges> ok, so what space 4 do?
[20:16:25] <PCW> new 7i80 manuals show whats there
[20:17:01] <micges> ok
[20:17:10] <PCW> space 4 is all timing related
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[20:18:10] <PCW> only 2 functions work without DPLL component (WaituS and Timestamp)
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[20:18:48] <micges> I see
[20:19:45] <PCW> other functions all wait for DPLL related time (with programmable timeout)
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[20:21:32] <PCW> V14 also has TP0 wired to RXPKT and TP1 wired to TXPKT (if you have a scope)
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[20:22:59] <micges> serious changes
[20:23:12] <micges> 7i76E support for mf was trivial
[20:23:22] <PCW> well nothing incompatible
[20:24:06] <PCW> 7I76E is basically just a 7I80 grafted onto a 7I76 (with a different name)
[20:25:30] <micges> 7i77e any soon?
[20:25:38] <PCW> what 7I80 do you have?
[20:25:49] <PCW> Yes 7I77E is coming along
[20:26:01] <micges> HD and DB
[20:26:13] <PCW> all the hd16s are done
[20:26:31] <micges> ok hd16 for me
[20:27:08] <PCW> also sserial updated to V42
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[20:35:17] <ries> Hey guys, anybody happen to know/have a pythin script that makes from a square piece of wood a round piece of wood efficiently, eg, start at the corners etc..
[20:37:58] <PCW> ok 7i80.zip has the hd16 version updated to V14, LBP16 V3
[20:38:47] <micges> what was lbp changes?
[20:39:02] <PCW> just adding space 4
[20:39:10] <micges> ah ok
[20:39:58] <PCW> V14 allows setting all mac address bits from EEPROM (for issy)
[20:40:43] <PCW> (or anyone else that has their own mac addresses)
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[20:42:22] <PCW> did you clean up the hm2 printout?
[20:42:49] <PCW> the version I have is pretty sketchy
[20:43:25] <micges> yes I have
[20:44:19] <micges> mf on email
[20:44:48] <PCW> let my try it on my 32 bit xenomai 12.04 system here
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[20:48:28] <PCW> works for me
[20:48:50] <micges> good
[20:49:25] <DJ9DJ> gn8
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[20:50:37] <PCW> works on 10.04 but hm2 option segv's ;-(
[20:51:17] <micges> shit, will check it in few min
[20:51:30] <micges> I've updated firmware but still have v13 and v2
[20:51:36] <PCW> (with 5i25)
[20:51:44] <PCW> cycle power?
[20:51:48] <micges> yes
[20:52:04] <micges> few times
[20:52:10] <micges> both on db and hd
[20:53:09] <micges> still hang on space 4
[20:53:57] <PCW> DB is not updated only HD16
[20:53:58] <micges> flashed with 7i80hd_16_svst4_8.bit
[20:54:19] <PCW> and what date does mesaflash say for the bit file?
[20:55:01] <micges> Design date: 2013/02/25
[20:55:31] <micges> Checking file... OK
[20:55:31] <micges> File type: BIT file
[20:55:31] <micges> Design name: TopEthernetHostMot2.ncd;UserID=0xFFFFFFFF
[20:55:31] <micges> Part name: 6slx16ftg256
[20:55:31] <micges> Design date: 2013/02/25
[20:55:32] <micges> Design time: 14:12:32
[20:55:34] <micges> Config Length: 464476
[20:56:21] <PCW> hmm...
[20:56:35] <micges> hold on letme try again from scratch
[20:56:58] <PCW> E:\XFER\7I80>mesaflash --device 7i80 --ip 192.168.1.122 --write e:\DIST\7i80\con
[20:57:00] <PCW> figs\hostmot2\7i80hd_16_svst4_8.bit
[20:57:01] <PCW> Checking file... OK
[20:57:03] <PCW> File type: BIT file
[20:57:04] <PCW> Design name: TopEthernetHostMot2.ncd;UserID=0xFFFFFFFF
[20:57:06] <PCW> Part name: 6slx16ftg256
[20:57:08] <PCW> Design date: 2013/09/26
[20:57:19] <PCW> maybe i messed up the ftp
[21:00:56] <Jymmm> I hope you meant sftp
[21:01:38] <PCW> scp or whatever
[21:01:43] <Jymmm> =)
[21:02:01] <Jymmm> as long as there is an 's' in there somewhere =)
[21:02:38] <PCW> the correct file is www.mesanet.com/software/parallel/7i80.zip
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[21:03:26] <micges> still latest are from feburary in zip file
[21:03:51] <micges> latest configs*
[21:05:57] <PCW> must have missed a step somewhere...
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[21:11:24] <PCW> redoing...
[21:14:15] <PCW> so mesaflash 7i80 hm2 printout works fine on 12.04 and 10.04
[21:14:16] <PCW> but prints garbage values and eventually segv's with a PCI card (on 10.04)
[21:14:50] <PCW> ok zip file ought to be correct now
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[21:27:10] <micges> PCW: still no
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[21:30:53] <PCW> caching issue?
[21:31:21] <micges> no idea
[21:32:42] <micges> chekcing other browsers
[21:33:58] <micges> it ok now, sorry probably stupid opera..
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[21:35:53] <micges> yep firmware v14
[21:39:16] <andypugh> CaptHindsight: That direct metal printer is rather disappointing. If they don't have a print head yet, then they don't have anything yet.
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[21:40:05] <andypugh> But I am very serioulsy considering making a sand-core printer. I have a tame foundry, patterns are the hard part.
[21:40:31] <andypugh> So, printing patterns (or even just the cores) is very tempting.
[21:45:42] <CaptHindsight> andypugh: yes, I'm reading more hyped up articles lately that don't mention any specifics except for some new possible breakthrough to just get some attention
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[21:47:19] <CaptHindsight> andypugh: sand types use inkjets to deposit a binder, the problem with DIY is getting an inkjet to work the way you want
[21:47:31] <andypugh> I have a printer for transparent aloominum. Well, I have the XYZ axes, I am still working on the print head.
[21:48:12] <andypugh> CaptHindsight: I am thinking in terms of a fuel injector and sodoum silicate
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[21:48:23] <CaptHindsight> that will work
[21:48:52] <CaptHindsight> you don't need the high pressure since you're not injecting into a cylinder
[21:49:06] <andypugh> And if I need smaller nozzles, I know a man who can make tiny fuel injectors:
http://www.f1-2000.co.uk/index.php?f=fuel_injectors
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[21:49:53] <andypugh> The high pressure in fuel injection is about atomisation and flow rates more than cylinder pressure.
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[21:53:02] <PCW> "micges yep firmware v14" thats good, I thought I was going crazy (still a possibility)
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[21:53:02] <CaptHindsight> depending on the resolution you want you could look for a used CIJ head or valvejet
[21:53:02] <micges> PCW: yeah once again sorry
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[21:59:21] <CaptHindsight> http://www.ebay.com/itm/Xaar-128-80-Printhead-/161114500308?pt=LH_DefaultDomain_0&hash=item25832c2cd4 80pL 128 nozzle piezo printhead
[21:59:28] <CaptHindsight> andypugh: ^^
[22:00:10] <CaptHindsight> very popular in China, you'll just need the interface specs
[22:00:24] <andypugh> I was rather expecting to build the whole machine for less than thet
[22:00:35] <CaptHindsight> oh but those don't handle water, they need non-conductive fluids only
[22:00:59] <andypugh> PCW: Not quite. I can probably push without docs in an hour or so.
[22:00:59] <CaptHindsight> andypugh: ok, if you only want the one nozzle
[22:01:35] <andypugh> PCW, or now, I guess, with hm2dpll not exactly working
[22:02:12] <andypugh> (the Fanuc should still work with num)_hm2_dpll=0 as that forces the creation of the global-start HAL function.
[22:03:33] <PCW> does it do the automatically if no DPLL is present?
[22:04:00] <andypugh> I think so. That was the intention, but hasn't been tested.
[22:04:23] <PCW> well let me see wart hepens
[22:05:18] <andypugh> I will push as soon as it builds and (at least) runs my SSI.
[22:07:48] <PCW> Remember your resolver interface that sent the absolute position in quadrature at startup?
[22:07:50] <PCW> turns out there's a standard absolute encoder spec like that (ISI)
[22:08:11] <andypugh> It's not the worst possible idea.
[22:08:48] <PCW> I think it has a init and busy pin
[22:09:36] <PCW> but other than that, just quadrature
[22:10:54] <andypugh> Sending all the counts on power-up would be a workable solution too.
[22:10:54] <PCW> how wide will a fuel injection nozzle spray? seems like you would need to do microsurgery to the nozzle so you get a stream
[22:11:22] <andypugh> A Diesel one would be hopeless.
[22:11:41] <andypugh> (they have 6, 7 or 8 holes in the side)
[22:11:54] <PCW> not quite what you want
[22:11:56] <andypugh> Did you look at the link?
[22:12:21] <andypugh> I think you might know Roger.
[22:14:38] <PCW> OH yeah the little Ferrari guy
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[22:15:48] <andypugh> Perfectionist. A nice chap, but sees problems everywhere.
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[22:19:19] <PCW> is he the one that had the problems with the IC-HAUS interpolator?
[22:19:28] <andypugh> Yes.
[22:19:39] <PCW> Ever sorted out?
[22:20:00] <andypugh> I think he is happy now. I can't recall what it was.
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[22:20:24] <andypugh> He was asking about your one, and if it worked with the serial interface yet.
[22:20:48] <PCW> Were making a little board with that chip so I hope its OK
[22:21:04] <PCW> not tried yet
[22:22:09] <PCW> I suspect the BISS firmware needs work Took me a while to even
[22:22:10] <PCW> understand how it was supposed to work since i did it so long ago
[22:22:41] <andypugh> BiSS is entirely an iCHaus invention as far as I can make out
[22:23:52] <PCW> Yes, but fairly common for high end encoders
[22:23:53] <PCW> (their interpolator is probably found in a lot of absolute encoders)
[22:25:23] <PCW> latest Fanuc encoders claim 16M counts/rev
[22:25:25] <PCW> The IC-Haus interpolatior coudl do this with a 2048 line wheel
[22:26:02] <andypugh> I can see that being great for the PID loop
[22:26:31] <PCW> (their 13 bit one) They have a new 16 bit one with tables for waveform correction
[22:26:41] <PCW> (no price yet)
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[22:43:05] <andypugh> is foo[0].bar equivalent to foo->bar?
[22:45:26] <micges> I think yes (with casting)
[22:46:05] <andypugh> Hmm.
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[22:46:56] <micges> andypugh: what do you have?
[22:47:14] <andypugh> It's complicated
[22:48:04] <andypugh> Normally Hostmot2 functions have a *pins pointer to an array of structs of pins.
[22:48:55] <andypugh> In the case of the hm2dpll (new) there is only one layer, ie .pins contains only one struct
[22:49:40] <andypugh> Normally you hal_malloc and index in by [index] and it just works.
[22:50:41] <andypugh> Ah! Is *foo->bar interpreted differently from *foo[2].bar ? different priorities on the indirection maybe?
[22:51:24] <micges> I have no idea about priorities
[22:52:12] <andypugh> Well, if my segfault doesn't end in cf0a the next time, that is what it was
[22:52:32] <micges> http://www.swansontec.com/sopc.html
[22:53:01] <andypugh> Ah, OK. Not that then
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[22:58:27] <andypugh> Is this right? hm2->hm2dpll.pins = hal_malloc(sizeof(hm2_hm2dpll_pins_t));
[22:58:45] <andypugh> I read that casting a malloc was bad..
[22:59:52] <micges> yes
[23:00:04] <micges> and pins is array of pins or struct of pins?
[23:00:22] <andypugh> Its a struct of pin.
[23:00:47] <andypugh> Normally it would be an array of structs of pins, but this time it is only a single struct.
[23:01:12] <micges> so *(hm2->hm2dpll.pins.pin_n) = value
[23:01:36] <andypugh> Oddly, no.
[23:02:08] <andypugh> The IDE auto-corrects to *(hm2->hm2dpll.pins->pin_n) = value
[23:02:24] <andypugh> (And if I pretend I know better, then it won't compile)
[23:03:50] <micges> show me h file
[23:04:05] <micges> with all structs you use
[23:04:55] <andypugh> http://pastebin.com/CuFubfJ4
[23:05:42] <micges> ahh, second arrow is correct
[23:06:07] <micges> you have *pins in hm2dpll
[23:06:39] <andypugh> I need to be able to hal_malloc pins into shared memory, so it has to be a pointer.
[23:06:57] <micges> so its segfault where?
[23:07:57] <andypugh> reading any *...pins->pin_n
[23:08:56] <andypugh> I have done this lots of times before, but pins has always previously been an array
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[23:10:41] <andypugh> (or, more spcifically, *pins has been malloced as multiple and indexed as an array)
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[23:15:20] <andypugh> It segfaults on line 23 of this paste:
http://pastebin.com/Z6m45vqQ
[23:16:19] <andypugh> (and why they had to use * to mean two totally different things is something I simply can't understand)
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[23:23:26] <micges> buff = (u32)(*pins->base_freq * period * 1e-6) / (( 1 << *pins->ddssize) * *pins->prescale);
[23:23:29] <micges> try this
[23:23:37] <PCW> dpll size is read only (just to be used for frequency calculations)
[23:24:55] <PCW> (its 42 now)
[23:25:43] <andypugh> PCW: Yes, I am using the read-in value
[23:26:18] <andypugh> micges: I think I had that, I just thought I would try something else.
[23:26:23] <PCW> it might be different for different clocklow frequencies in the future
[23:27:10] <micges> andypugh: so I don't know
[23:27:43] <andypugh> Well, that is less helpful than you spotting an obvious error. Bit less embarassing for me.
[23:28:29] <andypugh> Fault with vec=0, signo=8 ip=f9098f0a.
[23:29:39] <micges> andypugh: try to compare pointers of allocated are and exracted pointer to pins
[23:29:41] <cradek> signal 8 is floating point exception
[23:30:02] <micges> by rtapi_print("%p")
[23:30:06] <andypugh> andypugh@dn2800:~/git/linuxcnc-dev/src$ addr2line -e hostmot2.ko 0x11F0A
[23:31:01] <andypugh> Ah! you mean that the signo= actually conveys useful information?
[23:31:19] <cradek> heh
[23:31:57] <andypugh> So, not my usual uninitialised pointer problem, probably a divide-by-zero?
[23:32:33] <andypugh> How stupid of me to imagine that I couldn't find any new ways to mess up.
[23:32:44] <cradek> fpe is often doing math with an uninitialized floating point value, or dividing by zero, acos(999), etc
[23:33:20] <cradek> a wizard could tell *which* exception it is
[23:33:29] <cradek> but you and I just have to guess :-)
[23:34:23] <cradek> I think I'm wrong about acos(999)
[23:35:09] <andypugh> The problem is likely to not so muchbe the +inf in the double, as then trying to cast it to a u32
[23:35:33] <cradek> here be dragons?
[23:36:09] <cradek> but neither of those sound like they'd generate a FPE to me
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[23:36:12] <andypugh> It's OK for a float to be Inf. but ye cannae cast it, cap'n
[23:36:47] <cradek> I'd suspect doing math on an uninitialized FP value
[23:37:21] <andypugh> :-)
[23:37:22] <andypugh> 999808 YES thread1 ( 106883, 224049 )
[23:38:00] <cradek> that looks pretty slow...
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[23:38:12] <andypugh> Yes, I am rather concerned about that
[23:38:50] <andypugh> I do hope I don't need to try to _optimise_ hm2!
[23:39:00] <cradek> eek
[23:39:29] <cradek> if you can run it in userland, I bet you can profile it
[23:39:46] <cradek> (never ever guess what to optimize)
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[23:44:49] <PCW> BaseRateDDS := round(TwoToTheNDDS*((BaseRate)/(DPLLBaseClock/PreScale)));
[23:45:56] <andypugh> This doesn't crash now, so I want to push it. I know it doesn't work, but it needs PCW to test it. Does it make sene to push it to a new branch? That might be too complicated, and nobody else has the firmwares that will load the potentially broken modules.
[23:46:48] <PCW> as long as a DPLL module is not there it should not run any code
[23:47:05] <PCW> nothing can go wrong
[23:48:05] <andypugh> micges: Sorry for wasting your time. And thanks for being willing to look.
[23:48:20] <micges> np