Delete comment from: Ken Shirriff's blog

Unknown said...

You mention that the 4004 supported subtraction, and that the 8008 used two's complement. Can you confirm that the 4004 also used two's complement? If not, do you know of any 4-bit CPU that implemented two's complement and could deal with signed integers from -8 through 7?

Oct 11, 2021, 2:46:23 PM

Posted to Reverse-engineering the surprisingly advanced ALU of the 8008 microprocessor