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This dude pulled out a microscope and said "there's your problem." Super impressive work. Really great micro-read.
by perdomon 2y ago
This dude pulled out a microscope and said "there's your problem." Super impressive work. Really great micro-read.
- layer8 2y agoTo be fair, he knew what the problem was (errors in the lookup table) beforehand.
- pests 2y agoIt’s not like the microscope is going to show “a lookup table” though. You need to know how it was implemented in silicon, how transistors are integrated into the silicon, etc to even start identifying the actual physical mistake.
- sgerenser 2y agoI wonder what node generation doing this type of thing becomes impossible (due to features being too small to be visible with an optical microscope)? I would have guessed sometime before the first Pentium, but obviously not.
- poizan42 2y agoI think the limit for discernible features when using an optical microscope is somewhere around 200nm. This would put the limit somewhere around the 250nm node size, which was used around 1993-1998.