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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 30 Jun 2018
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      Guess the chip. Brought to you by a gas flame and a razor blade (yes, I'm still doing shitty decaps, and my Mighty Razor™ still does an amazing job).pic.twitter.com/MZ3TTxqQp9

      9 replies 5 retweets 62 likes
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    2. q3k‏ @q3k 30 Jun 2018
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      Replying to @marcan42

      I'm gonna guess it's the Z80-like embedded within the CPU-AGB? :P

      1 reply 0 retweets 0 likes
    3. Hector Martin‏ @marcan42 30 Jun 2018
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      Replying to @q3k

      Look closer.

      1 reply 0 retweets 0 likes
    4. R. Ou‏ @rqou_ 30 Jun 2018
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      Replying to @marcan42 @q3k

      The die ID is of a similar form to the one I have of the GBA CPU, and the pad ring looks similar, but something doesn't match up because the GBA CPU is supposed to be full of CMP fill on the top layer.pic.twitter.com/SfuQ8aMe8A

      1 reply 0 retweets 2 likes
    5. Hector Martin‏ @marcan42 30 Jun 2018
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      Replying to @rqou_ @q3k

      My Mighty Razor isn't just for decapping, it's also for delayering.

      1 reply 0 retweets 0 likes
    6. R. Ou‏ @rqou_ 30 Jun 2018
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      Replying to @marcan42 @q3k

      Huh, and it doesn't ever chip/shatter the die?

      1 reply 0 retweets 0 likes
    7. Hector Martin‏ @marcan42 30 Jun 2018
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      Replying to @rqou_ @q3k

      Sometimes it does. But hey, for the price...

      1 reply 0 retweets 1 like
    8. R. Ou‏ @rqou_ 30 Jun 2018
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      Replying to @marcan42 @q3k

      In that case, is the big denser block in the center the ARM7TDMI hard macro? I count 16/32 repeating patterns at the very bottom of it, and the overall layout very vaguely resembles the public ARM1 layout.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 30 Jun 2018
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      Replying to @rqou_ @q3k

      If you Google hard enough, you'll find a PDF with an ARM7TDMI layout which is a 1:1 match :-)

      1:40 PM - 30 Jun 2018
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