Jeff Jetton
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jeffjetton.bsky.social
Jeff Jetton
@jeffjetton.bsky.social
46 followers 72 following 120 posts
He’s an accordionist and pianist. You might see him tweeting about bikes, old computers, and data science too.
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jeffjetton.bsky.social
I'm probably the only person on the planet who currently needs this, but here's a 6502 Opcode Reference... in octal!

#ChuckPeddleDay
A table of 6502 CPU machine language instructions along with their octal opcodes
November 25, 2025 at 5:44 PM
jeffjetton.bsky.social
Celebrating #ChuckPeddleDay with a 65C02.
Photo of an electronics breadboard with several IC chips and wires. The chip in the upper left is a 65C02 CPU. An alphanumeric LCD screen in the lower right is displaying "Happy Chuck Peddle Day!"
November 25, 2025 at 5:41 PM
jeffjetton.bsky.social
Our generation's "The Ultimate Confrontation"?
The 1967 black-and-white photo "The Ultimate Confrontation: The Flower and the Bayonet", showing a 17-year-old girl holding a chrysanthemum in front of a line of bayonet-wielding soldiers, during an anti-war march in Washington, DC.
October 12, 2025 at 10:43 PM
jeffjetton.bsky.social
Les McCann too!
Black and white photo of singer/pianist Les McCann on stage, singing and playing a Fender Rhodes electric piano with an Arp Pro Soloist synthesizer on top.
September 23, 2025 at 2:07 PM
jeffjetton.bsky.social
Celebrating the 6502's 50th anniversary the best way I know how...
Photo of a homemade 6502-based computer, built on a breadboard. There is a 16-key membrane keypad and a small LCD display connected to it. The display is showing the status of the CPU registers.
September 17, 2025 at 10:08 PM
jeffjetton.bsky.social
I've got the same radio in my kitchen, in a different color scheme. It sounds pretty great for the size.

(And yeah, sometimes I hook an 8-Track player up to it.)
A Tivoli Audio Model One analog radio setting on top of an 8-Track cassette player.
September 7, 2025 at 8:00 PM
jeffjetton.bsky.social
I had the Six Million Dollar Man one too, and also this one...
A '70s-era metal lunchbox based on the TV show "Emergency"
September 6, 2025 at 9:21 PM
jeffjetton.bsky.social
Lookie what just arrived in the mail! Anyone else get their copy?
A hand holding a new copy of the first issue of "Compute's Gazette" magazine.
July 23, 2025 at 6:10 PM
jeffjetton.bsky.social
Did I transcribe Dugga Doo? Yes. Yes I did.
A leadsheet for the song "Dugga Doo"
May 29, 2025 at 3:21 AM
jeffjetton.bsky.social
Cartoon of a robot with a human female. Human: "Robobert... do you think I'm pretty?". Robot: "Babe, you are a one zero". (It is ambiguous as to whether he said the word "ten" or "one zero"). Human: "Wait... in base ten or binary? Which one, Robobert?" The last panel shows the robot sweating and short circuiting.
May 16, 2025 at 2:55 PM
jeffjetton.bsky.social
Wow...
Google AI Overview that reads: The saying "don't drain the bathtub after midnight" is a superstition, and while there's no scientific basis for it, it's rooted in the idea of avoiding negative consequences or bad luck after that time. Some explanations point to the idea that midnight marks the transition to a new day, and draining the tub afterward could symbolically drain away good luck or energy for the day ahead. Others see it as a way to avoid disturbing the spirits that may be active at night. Ultimately, it's a belief passed down through culture and tradition, and its meaning is more about the symbolic act of avoiding negative energy than any literal effect.
April 23, 2025 at 2:04 PM
jeffjetton.bsky.social
Okay, this is both hilarious and a good example of why you should always treat AI output with a healthy does of skepticism...
Screenshot of AI output. It reads: The saying "two farts are worth more than a sack of potatoes" is a hyperbolic, humorous way of saying that something seemingly worthless or insignificant can be more valuable or valuable than a tangible possession, like a sack of potatoes. It highlights the subjective nature of value and the potential for things to be worth more than their material worth.
April 23, 2025 at 2:00 PM
jeffjetton.bsky.social
I know it from its starring role in "The Apple", my all-time favorite "bad" movie!
Shot of the front of the ICC from the 1980 movie "The Apple" Shot of the ICC's Level 0, from the 1980 movie "The Apple" Shot of the main foyer of the ICC, from the 1980 movie "The Apple" Shot of Room 6 (the "spaceship") from the 1980 movie "The Apple"
February 24, 2025 at 9:55 PM
jeffjetton.bsky.social
Computers from the '60s looked like this:
Front panel of a "straight 8" PDP-8 minicomputer.
February 23, 2025 at 3:51 PM
jeffjetton.bsky.social
I've been an a-ha fan for 40 years and only just now noticed that there's a dog on the cover.
The cover of a-ha's 1985 album "Hunting High and Low". A red box has been drawn in the lower-left corner to highlight that, among the people in the cover's black-and-white photo, there's a dog just laying on its side on a bench, chilling.
January 23, 2025 at 12:11 AM
jeffjetton.bsky.social
That last panel needs to become a meme.
Comic strip drawing of a hand reaching into a bag, with the words "...and fate draws again from his bag of tricks"
December 20, 2024 at 4:36 PM
jeffjetton.bsky.social
I'm imaging Mom unwrapping a white album with "JAZZ RECORD" printed on the front in big, black letters.
Photo of a collection of generic products, perhaps from the early 1980s, each simply labeled with the name of the item.
December 19, 2024 at 8:35 PM
jeffjetton.bsky.social
Screenshots of two Indiana Jones video games, 42 years apart:
Screenshot of the 1982 Atari video game "Raiders of the Lost Ark". It's a mostly plain screen, with few flat, blocky objects in a handful of colors, barely recognizable as representing people and items. Screenshot of the new video game "Indiana Jones and the Great Circle", showing Indiana Jones manipulating some mechanical device in an ancient temple. The look is very nearly photo-realistic, with burning flames causing accurate light and shadow in a fully three-dimensional environment.
December 9, 2024 at 11:22 PM
jeffjetton.bsky.social
Giving Forth a try. Seemed appropriate to do it retro-style. #programming #forthlang
Photo of a black-and-white CRT monitor displaying several lines written in the programming language Forth. A older-style computer keyboard sits in front of it. Off to the side is an iPad displaying a page from Leo Brodie's book "Going Forth".
December 6, 2024 at 11:11 PM
jeffjetton.bsky.social
A still from the move "Wayne's World" with the word "NOT!" superimposed onto it in large, white letters.
December 4, 2024 at 5:15 PM
jeffjetton.bsky.social
Wife's out of town this weekend, so it's time to get rowdy!!!

(By which I mean, finally getting around to refurbing some speakers I bought at a yard sale last year.)
Two medium-sized stereo speaker cabinets, partially dismantled. The speaker from one has been removed and is next to the cabinet. Parts of it are deteriorated. A screwdriver, a tube of glue, and two replacement foam gaskets are nearby. Two bare speakers in their metal frames. The frames have been mostly cleaned of glue and other residue.
December 1, 2024 at 4:51 PM
jeffjetton.bsky.social
* Ahem *

From my elementary school yearbook. Not me in the photo, but that's the very DEC Writer I used to play Star Trek and Wumpus on.
A low-resolution, black-and-white photo of two young children using a printer-based computer terminal, circa 1980. A caption at the bottom reads "At the Computer".
November 12, 2024 at 10:40 PM