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submitted 2 years ago* (last edited 2 years ago) by sag@lemm.ee to c/programmerhumor@lemmy.ml
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[-] davel@lemmy.ml 45 points 2 years ago

Assembly code is for writing C compilers, and C compilers are for writing Lisp interpreters.

[-] wewbull@feddit.uk 14 points 2 years ago* (last edited 2 years ago)

Only the most very basic compilers. C compilers are in C mainly.

[-] davel@lemmy.ml 11 points 2 years ago* (last edited 2 years ago)

Not the first C compiler obviously. According to this Stack Overflow post, BCPL* begat B, which begat C. Language self-hosting is pretty fascinating.

*Perhaps BCPL was originally written in assembly; I’m not certain: https://github.com/SergeGris/BCPL-compiler

[-] ulterno@lemmy.kde.social 6 points 2 years ago

Talking about bootstrap here?

[-] wewbull@feddit.uk 1 points 2 years ago
[-] Revan343@lemmy.ca 2 points 2 years ago

And that's how you get the Thompson hack

[-] RestrictedAccount@lemmy.world 4 points 2 years ago

Back in High School in the 80’s me and a buddy wrote a Z-80 editor assembler in TRS-DOS BASIC.

It was not rocket science.

[-] davel@lemmy.ml 5 points 2 years ago* (last edited 2 years ago)

I never did get very far with the TRS-80 Editor Assembler, but that was my first exposure to such things.

I also remember the BASIC code for the Dancing Daemon which was replete with PEEKs and POKEs, such that much of it was written in machine code.

[-] RestrictedAccount@lemmy.world 2 points 2 years ago

Exactly how we did it too. We created the editor/assembler that peeked to see what was there and display it in Assembly, Hexadecimal, and ASCII.

You could edit whichever version you wanted and it would Poke it into RAM.

You could also save swaths to a file.

[-] Alexstarfire@lemmy.world 2 points 2 years ago

True, it was computer science.

this post was submitted on 03 Aug 2024
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