# pkimpel/retro-1620

> Web-based emulator and operating environment for the IBM 1620 Model-2 computer system, reproducing its architecture and peripherals in the browser. The project also aims to recover as much surviving software for the system as possible.

- Magnitude: 1.8 out of 10 — Steady
- Stars: 12 total · +5 stars today
- Star trust: star growth looks organic
- Category: Learning & lists · Language: JavaScript · License: MIT · Created: 2022-07-19 · Last push: 2026-09-22
- GitHub: https://github.com/pkimpel/retro-1620 · Homepage: https://www.phkimpel.us/IBM-1620/ · Page: https://gitnova.dev/en/r/pkimpel/retro-1620

## Useful for

- Run an IBM 1620 Model-2 emulation in the browser without installing software
- Study the 1620 two-address architecture and instruction set interactively
- Run recovered 1620 software from the bitsavers archive

## Why it’s here

- 5 stars today.
- Hacker News: “Web-based IBM 1620 emulator and IPL-V from 1963” — 37 points, 22 h ago.

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 1
- Issues and pull requests: 21
- Watchers: 2
- Average over the last week: 1 per day
- Usual pace: 0 per day
- Stars in the last hour (measured): 0

## Stars per day, last 30 days (oldest → newest, today is partial)

2026-08-25 … 2026-09-23: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 5

## Hacker News

- Web-based IBM 1620 emulator and IPL-V from 1963 — 37 points, 8 comments: https://news.ycombinator.com/item?id=49809935

## Spotted in now

- Spotted on Hacker News

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Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-09-23 22:36 UTC, updated every 30 minutes.