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Dev tools · August 11, 2025

AS

A Sinclair ZX81 retro web assembler+simulator

Lots of fun to do. I would have not taken the time without the speedup provided by Claude. https://andyrosa.github.io/Sinclaude/simulator.html

A Sinclair ZX81 retro web assembler+simulator launched on August 11, 2025 with 80 votes, #433 of 8,530 launches that month and more than 95% of that year's launches.

Alternativestop 5% of August 2025

In plain words

A Sinclair ZX81 Retro Web Assembler and Simulator is a browser-based tool that allows users to write, assemble, and run code for the classic 1980s ZX81 computer. It is designed for retro computing enthusiasts and developers interested in exploring vintage assembly language programming. The tool combines an assembler with a working simulator of the original hardware, enabling users to test and execute ZX81 programs directly in a web browser.

written from the facts on this page · September 2026

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