Monday, 2019-09-16

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xobsMadHacker: I redid the address detection to pull it from the Revision field: https://github.com/im-tomu/fomu-flash/commit/5a59794d91d95ab281a689e65cd5c4b37a34b82d07:04
tpbTitle: rpi: better handling of cpu revisions · im-tomu/fomu-flash@5a59794 · GitHub (at github.com)07:04
MadHackerAh right, good shout.07:33
MadHackerI'll grab that.07:33
MadHackerYep, works fine. Thanks for that. :)07:38
xobsI provided the factory with two options for SPI flash, and now they've gone and put both on the board.  So I'm getting the test jig to accept two SPI IDs now, and making sure Fomu Flash supports both.07:38
MadHackerHeh. Two options and taking both is just being awkward. Maybe issues sourcing either in volume?07:39
xobsCould be!  Or maybe one was cheaper.  Still, it's a supported configuration.  And better to have more supply chain options.07:40
MadHackerAs you say.07:40
MadHackerPeriphally relatedly, I got 300 PCBs delivered yesterday from JLPCB for an LED project; first time I've seen a PCB mask being fixed with tippex where they've scratched it or something. :D07:41
MadHackerWhite solder mask and they apparently felt it was OK to fix it with correction fluid. :D07:41
xobsCreative.07:42
MadHackerI don't know whether to be impressed or horrified, TBH.07:42
xobsBoth seem appropriate.07:42
MadHackerhttps://www.jamiecraig.com/wp-content/uploads/2019/09/b9e70a6a-6a43-43da-8be3-f723a8355047-4523-0000035936b8c224_file-1024x768.jpg07:46
xobsThere, fixed.07:46
xobsBut if they're the PCB house I'm thinking of, that really seems in-line with their operating practices.  Cheap and fast.07:47
MadHackerThe mask seems to have misbehaved on the vias in general - some have full-on bubbles on top of them - and I think this is just where there was bare copper showing.07:47
MadHackerOh, absolutely. This was *dirt* cheap.07:47
MadHacker300 PCBs, panelised, and a framed stencil for £57, shipped.07:47
MadHackerThe quality's crappy but the turnaround time and price were both great.07:48
MadHackerUsual triangle - cheap, fast, good, pick two.07:48
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halosghosthey there everyone13:29
halosghostany word on the fomu shipping timeline?13:29
xobshalosghost: you can email [email protected] and ask them. I thought they had stock.13:31
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halosghostmm, I may; haven't received mine or gotten an email notification13:53
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halosghost(about when I should expect it)13:55
halosghostand since it's been shipping for a month or so, I was hoping to have gotten mine :P13:55
halosghostsent13:56
* halosghost is so excited to mess with it13:56
halosghostmy current plan is to try and implement some basic posit hardware on it14:48
halosghostand then I can have a posit coprocessor of sorts14:48
halosghostwould be so cool14:48
halosghostI should probably start with qnums14:48
halosghostmuch easier14:48
halosghostand also quite cool14:49
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acathlahalosghost, what's "posit hardware"?17:31
halosghostacathla: posits are an encoding of fractional numbers into binary that is meant to be a competing standard to floating-point arithmetic17:32
halosghostacathla: where floating-point acceleration hardware is quite complex to implement, posit hardware is apparently much more approachable17:33
halosghostthat's one of the purported benefits of posits over floating-point17:33
halosghostsomewhat similarly, qnums are a dramatically simpler binary format for fractional numbers17:35
halosghostthough, at least at first blush, qnums are dramatically less widely usable than posits17:35
acathlaOkay, thanks17:36
halosghostyou're quite welcome; let me know if you want links to documentation or anything :)17:37
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halosghostapparently, there was a light delay, but the next batch of fomus are expected to start shipping in the next week or so20:04
halosghosto/ :)20:04
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mithrofelix_: it would be awesome if someone got flashrom working well enough that fomu-flash could be retired20:24
felix_yep, the combination of the rather broad device support of flashrom and the additional features of fomu-flash would be awesome to have in one tool20:43
felix_will probably need enough qspi support for one or two flashrom programmer types to be able to switch spi flashes from quad to normal spi mode to use that for the currently not existing programmer to be used with my qspimux20:48
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