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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 8 Sep 2014
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      Fun factoid: the PS3 board still has vestiges of the original PS2. http://commons.wikimedia.org/wiki/File:Mb10k_all.jpg … vs http://commons.wikimedia.org/wiki/File:PS3_NTSC_COK-001_motherboard_(60GB_version).jpg … note the EE rambus.

      2 replies 3 retweets 8 likes
    2. smart reindeer momo‏ @smartkittymomo 8 Sep 2014
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      Replying to @marcan42

      @marcan42 @twiitar wasn't this due to the old PS2 backward compatibility? It proved too hard to emulate right off a disc so they added an EE

      1 reply 1 retweet 1 like
    3. Hector Martin‏ @marcan42 8 Sep 2014
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      Replying to @smartkittymomo

      .@acostoss My point is that the board layout of the PS2 RAM chips hasn't changed in all these years. They've been copying and pasting it.

      3 replies 2 retweets 2 likes
    4. John Kelley‏ @JohnHedge 8 Sep 2014
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      Replying to @marcan42

      @marcan42 @acostoss Eh, only in an entirely macro sense, decoupling caps have changed, ground plane is completely diff, and edge traces too

      2 replies 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 8 Sep 2014
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      Replying to @JohnHedge

      @JohnHedge @acostoss Caps are in the same places (mostly), ground plane is almost the same, many top layer traces are nearly identical.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 8 Sep 2014
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      @JohnHedge @acostoss They've made changes, but I don't think it's ever been redone from scratch. Looks like minor incremental changes to me.

      1:16 PM - 8 Sep 2014
      1 reply 0 retweets 0 likes
        1. John Kelley‏ @JohnHedge 8 Sep 2014
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          Replying to @marcan42

          @marcan42 @acostoss Of course, change also incurs testing to ensure compat. How many diff ways are there to lay that out as well?

          0 replies 0 retweets 0 likes
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