KnightOS/KnightOS
OS for z80 calculators observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5096
- days_rel: n/a
- days_push: 1949
- n_releases_24m: 0
Adoption not part of the score
1316 stars · 181 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
KnightOS is a third-party Unix-like operating system for TI z80-based graphing calculators, built on a custom kernel with an official userspace that ties together packages, settings, and upgrade files. This repository orchestrates the build of complete ROM and upgrade images for supported TI-73/83+/84+ calculator models using the KnightOS SDK.
Use cases
- install a custom operating system on a TI-84+ calculator
- build a Unix-like OS image for a z80 calculator
- run a third-party OS on a TI-83 Plus in an emulator
- create an upgrade file to flash onto a TI calculator
- develop against a custom kernel for z80 calculators
- replace the stock TI-OS with an open-source alternative
When to choose
- you own a supported TI z80 calculator (TI-73, TI-83+, TI-84+ family) and want a Unix-like alternative OS
- you want to tinker with operating system development on constrained z80 hardware
- you want to build custom ROM or upgrade images from source with the KnightOS SDK
When to avoid
- you need a modern, actively developed OS - the latest release dates to 2021 and development is largely dormant
- you have a calculator outside the supported TI z80 models, such as TI-Nspire or TI-89
- you just want calculator programs or games that run under the stock TI-OS
Facets
application · maturity maintenance
embedded developer-tools operating-systems embedded-systems education embedded cross-platform z80 ti-calculator unix-like custom-kernel assembly userspace rom
1 source
- readme: https://github.com/KnightOS/KnightOS · fetched 2026-08-28 · dd747383d02e
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| KnightOS/KnightOS | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="KnightOS/KnightOS")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem