Ken Shirriff's blog

Computer history, restoring vintage computers, IC reverse engineering, and whatever

Showing posts with label intel. Show all posts
Showing posts with label intel. Show all posts

Inside the Intel 1405: die photos of a shift register memory from 1970

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In 1970, MOS memory chips were just becoming popular, but were still very expensive. Intel had released their first product the previous yea...
3 comments:

Intel x86 documentation has more pages than the 6502 has transistors

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Microprocessors have become immensely more complex thanks to Moore's Law, but one thing that has been lost is the ability to fully under...
5 comments:

Reverse-engineering the flag circuits in the 8085 processor

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Processors all have status flags to keep track of conditions such as a zero value, a carry, or a negative value. Whenever you write a loop o...
4 comments:

Silicon reverse engineering: The 8085's undocumented flags

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The 8085 microprocessor has two undocumented status flags: V and K. These flags can be reverse-engineered by looking at the silicon of the ...
7 comments:
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