BBRouter is a browser-based circuit design and simulation workspace, and this project is presented as Ben Eater’s 8-bit SAP-1 computer arranged on 3D breadboards. The concept is to make an educational CPU inspectable as a physical-looking build as well as a schematic: users can place components, wire breadboard holes, view nets, and move around the assembly in three dimensions. The workspace also supports notes, labels, component datasheets, schematic export, build instructions, a bill of materials, fabrication-oriented wiring maps, and version history.
The interface includes simulation controls for pausing and running at different speeds, alongside tools for editing jumpers and inspecting circuit behavior. BBRouter also offers keyboard shortcuts and can connect to AI applications through an MCP server, allowing them to open and modify a user’s projects. However, the linked page currently shows no project open and reports that the shared link no longer opens a project. As a result, the SAP-1’s actual layout, wiring, and operation cannot be examined from this page, and it provides no details about the computer’s specific components or design choices.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.
OpenIDEA is a fast, native IDE rebuilt in Rust with an IntelliJ IDEA-style keymap and interface. It includes editing, code insights, debugging, Git, terminal, database, and HTTP tools for over 60 languages. (github.com)
Vela 0.1 is the first beta of a new Linux desktop environment, bringing a complete shell, window management, settings, file manager, and Vulkan-based graphics. It adds built-in updates and Bluetooth pairing, native-resolution support for X11 apps, and signed packages for Arch, Fedora, and Ubuntu. (velade.org)
Kleene’s second recursion theorem guarantees a program that reproduces its own description, forming the basis of a quine. An untyped lambda calculus construction shows how to build one and how formalization can clarify the theorem. (emarzion.github.io)
Retro486 is a browser-based Intel 486 PC emulator built entirely in JavaScript, with configurable hardware, storage, and display options. It boots FreeDOS and supports classic games and user-provided disk images, though some bundled games produced errors during testing. (tomshardware.com)
A C++ function returns a string_view into a temporary string, causing undefined behavior that lets optimized builds incorrectly grant root permissions. The bug reproduces with both Clang and GCC, illustrating how dangling references can produce surprising results. (nablag.com)
A browser-based port of the 1987 NES game Contra converts its assembly code to C and then WebAssembly. It supports solo play and online two-player games. (epoyraz.github.io)
Today's best Hacker News stories, summarized and screenshotted, one email a day.