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| MoeIcenowy | where's reliable way to buy iCE40UP5K-SG48? | 08:21 |
|---|---|---|
| MoeIcenowy | just use digikey? | 08:21 |
| daveshah | MoeIcenowy: yeah, unless it's more than a few thousand parts | 08:43 |
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| tnt | Both digikey and mouser keep it stocked in thousands, so seems pretty reliable source. | 12:38 |
| MoeIcenowy | yes | 13:03 |
| MoeIcenowy | unfortunately the Chinese electronic part supermarket LCSC doesn't have iCE49 | 13:03 |
| MoeIcenowy | s/49/40 | 13:03 |
| MoeIcenowy | so I must suffer from international shipment when buying iCE40 | 13:04 |
| tnt | you're in china ? | 13:21 |
| MoeIcenowy | tnt: yes | 13:44 |
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| sxpert | MoeIcenowy: can't those things be found in Huaquangbai ? | 14:42 |
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| corecode | MoeIcenowy: do you typically buy from lcsc? i thought that was the outlet to the west | 15:05 |
| MoeIcenowy | corecode: yes | 15:14 |
| MoeIcenowy | sxpert: many of them have no stocks, and need 10 days to order | 15:15 |
| MoeIcenowy | and not cheaper than digikey | 15:15 |
| MoeIcenowy | then why not digikey? | 15:15 |
| MoeIcenowy | iCE40 is quite unpopular in China | 15:15 |
| MoeIcenowy | things like EP4CE6 can be get quite easily and cheap | 15:16 |
| corecode | yea | 15:33 |
| corecode | ofc take something domestic | 15:33 |
| MoeIcenowy | in fact when something is not found on Chinese ver of lcsc, it will provide a way to order on Digikey/Mouser | 15:44 |
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| mrec | does anyone know a cheap source for the ICE40UP5K-SG48I part? | 16:16 |
| daveshah | No, not unless you are looking at 10-100k+ | 16:18 |
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| mrec | the cheapest part on mouser is 5$ it seems (100) | 16:23 |
| daveshah | yeah, I don't think you can do better at low quantity | 16:26 |
| tnt | I'd call 5$ cheap .. but then again that's just me. | 16:48 |
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| sxpert | MoeIcenowy: guess you could start a documentation project for the EP4* ;-) | 18:40 |
| sxpert | MoeIcenowy: and then add that to next-pnr ;-) | 18:40 |
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| sxpert | my head is about to explode with all these crazy FSMs ;-) | 19:33 |
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| corecode | sxpert: what crazy fsm? | 22:46 |
| tnt | Oh damnit :/ https://github.com/YosysHQ/yosys/issues/647 | 22:48 |
| tpb | Title: Internal module wires are not accessible using dot notation · Issue #647 · YosysHQ/yosys · GitHub (at github.com) | 22:48 |
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| emeb | gah | 23:08 |
| emeb | I've *never* used dot notation for accessing signals in synthesizable code. | 23:08 |
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| emeb | only ever for debugging / testbenches | 23:08 |
| emeb | at the ASIC shops I worked in that was a big no-no in the coding standards, mostly due to readability / reuse issues. | 23:09 |
| emeb | if you wanted a signal accessible at higher levels of hierarchy, you put it in the real port list | 23:10 |
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| tnt | emeb: well, this was for debugging ... but on hw. | 23:33 |
| tnt | wanted to route some internal signals to external gpios. | 23:33 |
| emeb | yeah - I've done that too. | 23:33 |
| emeb | lately using VHDL though and there's no equivalent to dot notation there. | 23:34 |
| emeb | so I we have to pull signals out for debug by adding ports at all levels. :P | 23:35 |
| daveshah | I think VHDL does have some kind of hierarchical signal access | 23:36 |
| emeb | hmm... | 23:36 |
| daveshah | Don't know if anything actually supports it | 23:36 |
| emeb | Modelsim has an add-on library for that which we sometimes use in testbenches | 23:37 |
| emeb | but no synthesis supports it | 23:37 |
| daveshah | https://www.doulos.com/knowhow/vhdl_designers_guide/vhdl_2008/vhdl_200x_ease/#hierarchicalnames | 23:38 |
| tpb | Title: VHDL-2008 Ease of Use (at www.doulos.com) | 23:38 |
| daveshah | I think it was part of 2008 | 23:38 |
| emeb | looks similar to the modelsim stuff. | 23:39 |
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