Travis Geiselbrecht

@tkgeisel
206 Followers
61 Following
23 Posts
Low level bit-wrangler. Worked on a medley of OSes over the years: BeOS, DangerOS, iOS, Jawbone OS, Fuchsia. Author of the little known but widely used Little Kernel. Gamer, musician on the side.
Pronouns: he/him/they
Githubhttps://github.com/travisg
Webhttps://tkgeisel.com/
IRCirc://libera.chat/osdev user geist

This MITS Altair 8800 kit was partial assembled with some errors but never completed. It sat for decades but now it has finally been corrected and completed with a new power supply. Here it is running its first game program.

https://icm.museum

#retrocomputing #vintagecomputing #retrogaming

It's not my homelab, it's my emotional support production environment.
Raise your hand if you ever made a paper snake out of tear-off tractor-feed margins.
The public is skeptical of tech and its potential dangers to humanity—but to assuage that—let’s have our Apple guy explain new chips by tenting his fingers in Dr. Frankenstein’s murder laboratory situated on a volcanic island only accessible by helicopter

“My god. The weapon is armed, the countdown has begun, and the only known copy of the override code is stored on this old Nokia 5510 with an empty battery. We’re doomed.”

“Everybody chill the fuck out. I got this. Just gotta crack open the old cable drawer. Here you go.”

“You have a Nokia 5510 charger, but why?! That phone hasn’t been sold in over 20 years!”

“Let’s just say, I always knew this day would come.”

“Wow. Your decision to never throw away cables just saved humanity honey…honey…time to wake up honey…”

thought that i should finally work on my cool OS architecture idea and then i quickly found out that the design i sketched is literally just Zircon

TIL: lace cards

It’s a computer punch card with every possible spot punched out, so what remains is a flimsy filamentous net of paper that instantly tears and jams up the card reader.

Old-school denial of service attack.

https://en.m.wikipedia.org/wiki/Lace_card

Lace card - Wikipedia

I really enjoy sitting in a corner and building just-the-right-thing that has as few bugs as I can manage, that sits quietly doing its job for a couple of years without troubling anybody. And when I learn after the fact that I've managed to do this, I feel very good about it.

It can take a while to figure out what just the right thing to build is, and it can take a bit of quiet not-rushed work to build it to my satisfaction, but it pays off when I'm allowed to do this.

"Allowed to". I don't like that phrase any more.

Fascinating book! How did I not know about this until today?!

"10 PRINT is a book about a one-line Commodore 64 BASIC program, published in November 2012."

Full PDF (CCA-NC-SA) available from the book's website: https://10print.org/

#books #retrocomputing #c64 #basic

10 PRINT CHR$(205.5+RND(1)); : GOTO 10

About 10 PRINT CHR$(205.5+RND(1)); : GOTO 10, a book from the MIT Press

10 PRINT CHR$(205.5+RND(1)); : GOTO 10