[durasj]

Chips and Code now provides one Learn / Tools / About interface, from a first signal through a working computer and a learner-written assembler. The original branding and minimal layout remain. Legacy URLs redirect into this interface, including saved experiments.

The homepage follows a scroll-driven journey from a complete laptop into its components, processor, and binary signals. Mobile and reduced-motion views retain the sequence as stills. Learning starts with signals, NOT, and AND before NAND and optional theory.

The guided path adds 31 tasks across Nand2Tetris Projects 1–6: buses and routing, arithmetic and the ALU, clocked memory, machine language (Mult and Fill), Memory/CPU/Computer, and two-pass assembly. Hardware construction supports Visual, Code, and Split views with real validation, local drafts, and progress. The assembler project runs learner JavaScript in an isolated worker with a timeout. Full reading covers the same material and links back to each layer.

All six official Web IDE tool types are available:

• Hardware simulator: structural HDL, buses/slices, custom chips, tick/tock, ROM/devices, and bounded TST execution with CMP comparisons.
• CPU emulator and assembler in one workspace: assembly/binary loading, symbols/source maps, stepping and bounded execution, registers/RAM, screen/keyboard, and .hack export.
• VM emulator: multiple files, stack/segments/calls, native OS services, screen/keyboard, execution, and reset.
• Jack compiler: multi-class compilation, source diagnostics, and persistent transfer into the VM.
• Bitmap editor: pointer/keyboard drawing, resizing, JSON drafts, and positioned Jack/assembly/screen-word output.

Saved HDL experiments, Boolean functions, and bus/routing exploration remain under Tools. Guided lessons stop at Project 6; VM and compiler tools are available for further exploration.

VM/Jack/runtime code is pinned to nand2tetris/web-ide commit 2070cd8, with retained MIT attribution and documented integration patches. Official project fixtures retain their notices and license. Educational adaptations retain Nisan/Schocken attribution and CC BY-NC-SA terms. Source and content audits document coverage.

The optional 48-second film has captions and a transcript. Its master remains silent: the connected Runway Free workspace still exposes no speech models. No account plan or credit settings were changed.

Validation on 17da6de: 494 unit tests pass (one existing todo), with 98.19% first-party line coverage; all 56 browser tests pass across nine specs; Svelte reports zero errors and warnings; Cypress TypeScript and production build pass. Browser coverage includes the original navigation and beginner journey, guided construction/progress, clocked hardware and comparison scripts, CPU execution, assembler-worker timeout/recovery, multi-file Jack → VM → reload → execution, and bitmap keyboard editing → assembly → screen memory. Mobile accessibility checks remain enabled without global exclusions. Desktop and 320-pixel screenshots were reviewed. The pinned vendor runtime is excluded from first-party coverage; its public adapter is integration-tested. Repository-wide lint still contains pre-existing violations; scoped checks for the new implementation passed.

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Project	Deployment	Actions	Updated
chipsandcode	Ready	Preview	Nov 7, 2026 3:28pm UTC

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