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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 26 Feb 2019
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      Thunderclap: "As far as we can ascertain, Xilinx, Lattice and Intel Cyclone FPGAs don’t allow us to replace the vendor-supplied implementation of configuration registers with our own (Intel calls it ‘config bypass’ mode) which we require." And yet we made it work on Lattice 🤔

      2 replies 10 retweets 46 likes
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    2. Sam Collinson‏ @_rezin_ 27 Feb 2019
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      Replying to @marcan42

      I’ve done it on Xilinx

      1 reply 0 retweets 2 likes
    3. Joe Fitz‏ @securelyfitz 27 Feb 2019
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      Replying to @_rezin_ @marcan42

      I think they meant to say "Intel, lattice and cyclone *PCIe blocks* don't allow us" which afaik is true, especially if you want to release your code.

      1 reply 0 retweets 3 likes
    4. This Tweet is unavailable.
      Hector Martin‏ @marcan42 27 Feb 2019
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      Replying to @snare @securelyfitz @_rezin_

      Xilinx uses hard IP for PCIe as far as I know (on the FPGAs I've looked at) and it doesn't give you enough control. You need to write your own PCIe core from scratch and just use the SERDES part.

      7:44 PM - 27 Feb 2019
      0 replies 0 retweets 0 likes
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        2. Hector Martin‏ @marcan42 27 Feb 2019
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          Replying to @snare @securelyfitz @_rezin_

          Heh, yeah, we might've been looking at 6 series at the time.

          0 replies 0 retweets 1 like
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