“you thought you did something there, didn’t you?”

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Joined 1 year ago
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Cake day: September 25th, 2023

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  • You’re remembering correctly, every other logic gate can be built from NAND gates, which is the foundation of this sort of minimal-instruction-set exercise. Beyond that, you need to be able to move data and change your program counter (jump, often conditionally). Then, if you want parity with modern instruction sets beyond just being turning complete, you need return and interrupt for control flow.



  • Bookmarking your comment so I can come back to it in a couple hours, if I hopefully remember to.

    But yes, almost. I don’t think the interrupt is necessary and the return isn’t under certain architectures. I have a doc on my computer somewhere where I was investigating what the absolute minimum was to make a turning complete machine and, to my recollection, there was only 4-6 instructions that were absolutely necessary. The ones I remember off the top of my head are NAND, MOV, JUMPIF, and then I believe I included NOP in accordance with some principle. RET and INT were convenience features in this design.




  • Non-misandry/-sexism version:

    A meme was made posing the humorous rhetoric of whether sex A would rather be stuck on an island with sex B or a bear. No distinction was made about the character of the sex B persona or the bear persona, it was left as a fill-in-the-blank for those who respond to rhetoric.

    Sex B largely understood this to be stereotyping and hate speech directed towards them at large without any distinction about whom the rhetoric was implying. Audience was then divided between those who recognize equality and sexism versus those who believe either only apply to marginalized groups

    with love, from an agender