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Re:Reverse-engineering the flag circuits in the 8085 processor by kogir on Thursday July 18, 2013 @04:59PM (#6066446)
I find stuff like this fascinating and marvel at how it's even possible to do via visual inspection alone.

It's also sobering to think about how long it would take using a similar process to understand a modern, 20 nanometer chip.

Re:Reverse-engineering the flag circuits in the 8085 processor by fein on Thursday July 18, 2013 @07:12PM (#6067175)
I always look at things like this and say that I wish I understood every step of the process, from electrical theory to fabrication.

I have the same approach to software, but I have to keep reminding myself that the things I'm trying to understand took hundreds of people to complete. It's an incredibly annoying internal struggle. I have no idea how to deal with it aside from grinding it all out until I die.

Re:Reverse-engineering the flag circuits in the 8085 processor by kens on Thursday July 18, 2013 @07:58PM (#6067398)
Author here: I don't understand every step of the process either :-) But old chips like this at least seem theoretically possible to comprehend in their entirety. I expect it would be pretty much impossible to reverse-engineer and understand a present-day processor with billions of transistors instead of thousands. But I could be surprised - 35 years from now people may be reverse-engineering Xeon chips for fun. And perhaps posting about interesting things they found in Intel's random number circuitry.