# CE-Programming/CEmu

Third-party TI-84 Plus CE / TI-83 Premium CE emulator, focused on developer features

Repository: https://github.com/CE-Programming/CEmu
Canonical: https://ross.abutalabs.com/products/ce-programming-cemu
Homepage: https://ce-programming.github.io/CEmu/
Language: C++
License: NOASSERTION
License Family: other
Topics: calculator, ti-84-plus-ce, ti-83-premium-ce, emulator, ez80, emulation
Last push: 2026-08-24T20:45:50+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 8, longevity 100
- inputs: {"age_days": 3946, "days_push": 9, "days_rel": 727, "gap_med": null, "n_releases_24m": 1}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1305, forks 90 (observed 2026-08-28T04:04:18.717960+00:00)

## What it is
CEmu is a third-party emulator for the eZ80-based TI-84 Plus CE and TI-83 Premium CE graphing calculators, built with a C core and a Qt/C++ GUI. It emphasizes developer features such as breakpoints, a disassembler, memory/CPU viewers, and TI-Basic debugging.

## Use cases
- emulate a TI-84 Plus CE calculator on my desktop
- debug eZ80 assembly programs for TI-CE calculators
- test calculator programs without a physical TI-84
- dump and run a ROM from my own TI calculator
- step through TI-Basic code with breakpoints
- capture screen recordings of calculator programs
- profile and benchmark calculator code with a cycle counter

## When to choose
- you develop assembly or TI-Basic software for TI-84 Plus CE / TI-83 Premium CE calculators and need debugging tools
- you want fast, accurate emulation with screen capture and state saving on Windows, macOS, or Linux
- you need hardware-revision-specific emulation (ASIC variants) or USB transfer emulation

## When to avoid
- you need an officially TI-licensed emulator for classroom compliance (use TI-SmartView CE instead)
- you want to emulate older TI calculators like the TI-84 Plus (non-CE) or TI-83
- you don't have access to a physical calculator to dump a ROM from, since CEmu requires your own ROM

## Facets
- artifact type: application
- maturity: active
- function: simulation, developer-tools, cli, gui
- domain: developer-tools, embedded-systems, hardware, education
- platform: windows, cpp, c
- tags: emulator, ti-84-plus-ce, ti-83-premium-ce, ez80, calculator, debugger, disassembler, qt, macos, linux

## Member repositories
- CE-Programming/CEmu (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:18.717960+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:51:00.211792+00:00, confidence not recorded.
  - readme: https://github.com/CE-Programming/CEmu (fetched 2026-08-28T04:04:18.717960+00:00, sha 7b82e2c9a274)
  - homepage: https://ce-programming.github.io/CEmu/ (fetched 2026-08-29T12:08:46.349801+00:00, sha 1c858793b279)
- Data as of 2026-08-30T08:39:29.467469+00:00.