Tuesday, 2023-04-11

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singhamFolks, are the gowin SRAM based FPGAs supported?10:16
loftysingham: #yosys-apicula 11:20
loftysingham: SOFA leverages the OpenFPGA framework to use Yosys through their own scripts, but it's not directly supported upstream because they haven't contributed anything upstream 11:33
loftyAlso, with the full disclosure that I used to work for the University of Utah who develop OpenFPGA (but not on OpenFPGA itself)11:33
loftyOpenFPGA is very definitely one of the FPGA frameworks of all time11:34
singhamWhat is yosys-apicula?11:57
singhamlofty: Don't worry about the full disclosure thing. Internet is way more untrustworthy. Today, absolutely nothing can be verified on internet without meeting the person in real life.11:59
singhamI mean so called beautiful technology AI has overriden trust in internet.11:59
loftysingham: it's a tradition for FPGA reverse engineering projects to have codenames; gives them a bit of identity11:59
loftyProject Apicula is the project to reverse engineer Gowin FPGAs, and its IRC channel is #yosys-apicula 12:00
singhamInteresting12:03
singhamI find it a bit astonishing that FLASH based FPGAs were solved before SRAM ones12:03
whitequark(solved?)12:20
singhamMeaning the way to code them was found through reverse engineering12:21
whitequarkas far as I know, SRAM ones came first12:22
whitequarkwell, unless you count GreenPAK4, which isn't really flash based (it uses an OTP ROM)12:22
singhamJust the littlebees are supported right?12:24
singhamThey're FLASH based.12:24
whitequarkoh, you mean by Gowin specifically?12:24
singhamYes12:26
whitequarkfrom a RE perspective, in my experience, SRAM based and Flash based devices don't make a lot of difference12:30
whitequarkI've RE'd a family of CPLDs which has both Flash and SRAM devices12:30
whitequarkthe bitstreams are nearly identical12:30
singhamYes, but still, I can't buy a board, and then find it is not supported by symbiflow12:33
singhamThat would be bad.12:33
* singham gotta go. Will see you folks later. Thanks lofty and whitequark12:33
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so-offishhey everybody whats up16:23
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