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Tech riderRev. 21 Sept 2026

minimal64

Ch 126.3of 30 Commodore 64 Emulators
  1. 1Runs onAPI, Web
  2. 2CostsNot stated by the maker
  3. 3Supported platformsWeb
  4. 4Disk and tape formatsPRG; CRT; Standard 8KB cartridges; Standard 16KB cartridges; Ocean Type 1; C64GS; Magic Desk
  5. 5Emulated C64 variantsCommodore 64
4 lines stated Written from the maker's own pages: github.com
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Overview

minimal64 is ranked #12 of 30 in Commodore 64 emulators on Specifiction. It runs on API, Web.

Compared on Commodore 64 emulators

Supported platforms
Webgithub.com
Disk and tape formats
PRG; CRT; Standard 8KB cartridges; Standard 16KB cartridges; Ocean Type 1; C64GS; Magic Deskgithub.com
Emulated C64 variants
Commodore 64github.com

Facts

Purpose
minimal64 is a plain C emulator for running Commodore 64 programs that do not use the Kernal, BASIC or Character ROMs.github.com · 4 Oct 2026
Intended use
The project is intended to run new software rather than the C64 back catalog.github.com · 4 Oct 2026
Cycle accuracy
Cycle accuracy is listed as an aim of the project.github.com · 4 Oct 2026
Web build
The build includes JavaScript and WebAssembly files that can be used in an HTML document.github.com · 4 Oct 2026
Program formats
The emulator supports PRG files and selected CRT cartridge formats, including standard 8KB and 16KB cartridges, Ocean Type 1, C64GS and Magic Desk.github.com · 4 Oct 2026
Custom Kernal
minimal64 includes a 252-byte custom Kernal and does not include BASIC or Character ROM data.github.com · 4 Oct 2026
User-supplied ROMs
The project provides functions to load user-supplied Kernal, BASIC and Character ROMs.github.com · 4 Oct 2026
Color
It uses RGB values for the C64's 16 colors instead of emulating PAL/NTSC color encoding or CRT effects, and provides functions to set those values.github.com · 4 Oct 2026
Emulation limits
Datasette, disk drives, analog color encoding, CRT effects, the user port and parallel port are not emulated.github.com · 4 Oct 2026
Compatibility caveat
Programs that rely on minimal64's custom Kernal will not run on real C64 hardware.github.com · 4 Oct 2026
API
The repository points to JavaScript wrappers as the API example.github.com · 4 Oct 2026
License and author
The repository identifies nopsta as the author and lists a GPL-2.0 license.github.com · 4 Oct 2026

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Where it ranks on Specifiction

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Sources