Oct 12, 2025
elk cloner! the program with a personality!
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elk cloner! the program with a personality!
Anya is live and ready to show you everything. Watch her strip, dance, and perform exclusive shows just for you. Interact in real-time and make your fantasies come true.
Free to watch • No registration required • HD streaming
Fantasy Language Creator (Classic Mac, Dan F. Zappone, 1994)
You can run it in your browser here.
(^Commodore Colt)
From 1984-1991, Commodore manufactured and sold their own PC computers, alongside their own C64/128 and Amiga computers.
"The Commodore PC compatible systems are a range of IBM PC compatible personal computers introduced in 1984 by home computer manufacturer Commodore Business Machines. Incompatible with Commodore 64 and Amiga architectures, they were generally regarded as good, serviceable workhorse PCs with nothing spectacular about them, but the well-established Commodore name was seen as a competitive asset. In 1984, Commodore signed a deal with Intel to second source manufacture the Intel 8088 CPU used in the IBM PC."
You might have heard of 32-bit and 64-bit applications before, and if you work with older software, maybe 16-bit and even 8-bit computers. But what came before 8-bit? Was it preceded by 4-bit computing? Were there 2-bit computers? 1-bit? Half-bit?
Well outside that one AVGN meme, half-bit isn't really a thing, but the answer is a bit weirder in other ways! The current most prominent CPU designs come from Intel and AMD, and Intel did produce 4-bit, 8-bit, 16-bit, 32-bit and 64-bit microprocessors (although 4-bit computers weren't really a thing). But what came before 4-bit microprocessors?
Mainframes and minicomputers did. These were large computers intended for organizations instead of personal use. Before microprocessors, they used transistorized integrated circuits (or in the early days even vacuum tubes) and required a much larger space to store the CPU.
And what bit length did these older computers have?
A large variety of bit lengths.
There were 16-bit, 32-bit and 64-bit mainframes/minicomputers, but you also had 36-bit computers (PDP-10), 12-bit (PDP-8), 18-bit (PDP-7), 24-bit (ICT 1900), 48-bit (Burroughs) and 60-bit (CDC 6000) computers among others. There were also computers that didn't use binary encoding to store numbers, such as decimal computers or the very rare ternary computers (Setun).
And you didn't always evolve by extending the bit length, you could upgrade from an 18-bit computer to a more powerful 16-bit computer, which is what the developers of early UNIX did when they switched over from the PDP-7 to the PDP-11, or offer 32-bit over 36-bit, which happened when IBM phased out the IBM 7090 in favor of the the System/360 or DEC phased out the PDP-10 in favor of the VAX.
Boards of Canada played on a 1959 PDP-1 Computer
Audio is produced on the PDP-1 with a clever hack done by Peter Samson as a student at MIT in the early 1960s. The PDP-1 has six "program flags", which are 6 flip-flops wired to six light bulbs on the control panel. A CPU instruction provides the ability to turn these light bulbs on or off via software. While these bulbs were originally intended to provide program status information to the computer operator, Peter repurposed four of these light bulbs into four square wave generators (or four 1-bit DACs, put another way), by turning the bulbs on and off at audio frequencies. Four wires are attached to the signal lines for these light bulbs. Resistors are used to downmix these four signals into stereo audio channels and provide impedance matching into a standard stereo amplifier, and combined with capacitors to create low pass filters to cut out the buzz of the computer noise and soften the square waves. The four light bulbs act as individual music voices. Each voice is transcribed separately using a custom DSL defined for the 1962 Harmony Compiler, and then merged into a single file which is then compiled by the original Harmony Compiler running on a PDP-1 emulator. The resulting paper tape file is then punched to physical paper tape using a tape punch, and then loaded into the real PDP-1 for music playback.
Samson also contributed to Spacewar!, one of the earliest videogames.
(via CDM, via @[email protected])
Anya is live and ready to show you everything. Watch her strip, dance, and perform exclusive shows just for you. Interact in real-time and make your fantasies come true.
Free to watch • No registration required • HD streaming
Visited the centre for computing history in Cambridge yesterday. Kudos to my patient husband who put up with me going off non stop about the exhibits. A way larger selection than I expected, including a huge silicon graphics computer and several of the BBC micros made by Acorn.
IBM System/360 mainframe assembly line in 1965
What makes a good boot sequence?
A while ago, I had my first truly viral post on Mastodon. It was this:
You might've seen it. It got almost four hundred boosts and reached beyond Mastodon to reddit and even 4chan. I even saw an edit with a spinning frog on the left screen. I knew the post would go down well with tech.lgbt but I never expected it to blow up the way it did.