Repo brief: hneemann/Digital

Generated by RepoPilot · document generated 2026-09-15 · concise human review Evidence snapshot · analyzed 2026-09-15T03:18:13.629Z · commit 535812dacb7c

Verdict

Mixed — Slowing — last commit 9mo ago

• Last commit 9mo ago
• 8 active contributors
• GPL-3.0 licensed
• CI configured
• 1 more receipt on the live page

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests

What it is

Digital is a Java-based digital logic designer and circuit simulator for educational purposes, allowing users to visually design, simulate, and analyze combinatorial and sequential logic circuits. It supports schematic drawing, gate-level simulation at 120 kHz clock speeds, VHDL/Verilog component integration via ghdl and Icarus Verilog, and exports designs to hardware description languages. Core capability: teach and verify digital logic from simple gates to complex processors (example: a MIPS-like single-cycle CPU) with timing analysis and test case validation. Monolithic Maven JAR project: src/main/java contains core simulator engine, src/main/dig/ houses pre-built circuit examples (74xx…

Start here

Open these first:

• pom.xml — Maven build configuration defining all project dependencies, plugins, and build lifecycle; essential for understanding the…
• src/main/dig/74xx/CrazySmallCPU.dig — Example digital circuit design file demonstrating the core .dig format that the simulator parses and executes; critical for…
• README.md — Project overview, feature list, and installation instructions; essential context for why the codebase exists and its…
• distribution/Digital.exe — Primary Windows distribution artifact; indicates the application entry point and packaging strategy for the simulator.
• .travis.yml — CI/CD pipeline configuration; shows how the project is tested and built across platforms automatically.

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

Check README for instructions.

Daily commands:

mvn clean package
java -jar target/digital-1.0-SNAPSHOT.jar

Or after release build, double-click Digital.jar on Windows/macOS, or run ./Digital.sh on Linux (distribution/linux/Digital.sh).

Key cautions & unknowns

• Slowing — last commit 9mo ago
• Single-maintainer risk — top contributor 91% of recent commits
• GPL-3.0 is copyleft — check downstream compatibility
• External tool dependency: VHDL and Verilog simulation require ghdl and Icarus Verilog installed separately on the system PATH—no bundled vendoring. JAR-to-EXE conversion: Windows distribution uses Launch4j…
• Published-advisory coverage was unavailable for the captured dependencies.
• Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

• Repository source
• Open issues
• Recent pull requests

Evidence note

Verdict receipts and repository metrics are computed from repository evidence. Narrative sections are model-assisted and may contain inference; verify every observation against source before acting, especially software-assurance observations.

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