Reverse Engineering of ALU of Microprocessor 8085 : Surprisingly Complex.
I just found a very interesting stuff from Ken Shirrif's blog on Reverse Engineering of Arithmetic Logic Unit Microprocessor 8085.
To anyone who wants to read the full detail on how the ALU really works & to people who like to play on with gates,take a look on : Inside the ALU of the 8085 microprocessor
This dude has very interesting blog 👍
To anyone who wants to read the full detail on how the ALU really works & to people who like to play on with gates,take a look on : Inside the ALU of the 8085 microprocessor
This dude has very interesting blog 👍
Replies
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aruncharyawesome engineering, good stuff Troll its really help for me to teach in my internship thanks for you kind information.. -
Abhishek Rawal
You would love to read this too Silicon reverse engineering: The 8085's undocumented flagsaruncharyawesome engineering, good stuff Troll its really help for me to teach in my internship thanks for you kind information..
Undocumented Flags V & K of 8085 explained ! -
Abhishek RawalHow 8085 Microprocessor decodes instructions internally ?
The set of PLAs are used to decode the instruction.
Arrangement of PLA in the chip is shown in figure given below :
The instruction ROM decodes into 48 other instruction groups.
Check this image :
Image from Ken Shirrif's blog.
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