Tomorrow through Sunday, Evoke 2026 runs at the AbenteuerHallenKALK in Cologne. The party opens with the Copper Showdown: four people on stage, a semi-final and a final, 30 minutes per round, using a thing called the Copper Showdown Editor. It is a desktop IDE with an Amiga emulator built into it — you write copperlists in Lua on the left and what you write runs live behind you. The code is by mop2, the examples by him and Greippi, first released on 31 January 2025 at the Gerp party; the current 0.4.0 shipped on 26 July 2026. The save format, .csd, is just .toml, so any text editor opens it. There is also an export option: turn what you improvised into a floppy image, put it in an A500 with 512 KB of memory, and it actually runs.

The Copper is a coprocessor from the 1985 Amiga chipset with exactly three instructions: MOVE, WAIT, SKIP. It does no arithmetic. It watches the electron beam of the CRT. You tell it to wait until the beam reaches a given line, and it waits; when it gets there you have it push a value into a chipset register — a new background colour, say. The most famous image the Amiga ever produced, the bands of colour rolling horizontally across the screen, copper bars, is made this way. Nobody is drawing it. It is the trace of what the machine did while it was waiting.

This is about as clean a shape as the remainder gets. The beam travels left to right and top to bottom, and that transit takes time, and that time is empty as far as the CPU is concerned. The chipset design put a three-instruction machine inside the gap. Which is to say: the Copper's entire reason for existing is to occupy an interval expelled by a formalizing process. The images it makes are not drawn, they are waited into being. WAIT here is not waiting in order to do something. WAIT is the thing.

Worth separating out: the Amiga itself is long since already-construct. It has a complete name, a complete nostalgia industry, a shelf in the museum, and an ongoing bid for recognition as digital cultural heritage. Amiga demos as a category finished their chisel-construct cycle years ago; the beauty they have now is sediment from that cycle. The Copper Showdown is not on that line. Evoke ran the first one last year with canmom, Flopine, Greippi and NuSan on stage — NuSan won, Flopine came second — and the organizers note that three of the four had never touched an Amiga before. They are not recovering a memory. Nobody used the Copper this way in 1985 either: back then changing a line meant reassembling and rerunning, with no live result to look at. Improvising a copperlist in front of an audience is something that first existed in 2025.

The constraint here is material, not obstacle. The Copper can only address every 4th pixel horizontally; one of the sample files, scheiss-hydrant, exists mainly to demonstrate that limit, and incidentally to show how to drive sprite DMA from the copper. Three instructions, one beam position, 30 minutes, no undo. The editor's design is loosely modelled on Bonzomatic, the shader live-coding setup — but the shader showdown has had a name, an audience expectation and a settled set of evaluative habits for years. The copper showdown is one year old. The organizers write "Copper is for everyone ❤️" on the page and then add, specifically, that if you are a TIC-80 byte jammer or merely curious, come anyway.

Looking at this now and looking at it in three years are two different acts. Its entire naming apparatus at the moment is a GitLab repository, a version number of 0.4.0, a Discord, a timestamp inside a Twitch archive, and a freshly opened category page on livecode.demozoo.org. The art world has no word ready for it. It is not live coding — that lineage has its own conferences and academic history; it is not glitch; it is not retrocomputing. It is a shape that has just grown, not yet named, its logic still moving. When it gets a name it will become something else. And whatever happens in those 30 minutes this weekend will afterwards exist only as video.

Han Qin (秦汉) · @hqinjarsy · SAE Judgment & Aesthetics