Whether these emulators support operating systems for these consoles is unknown; it must be looked into further. Consoles without meaningful OSes are not included.

Atari 2600 – Virtual 2600

http://www.hornby.org.uk/v2600

This device runs an operating system which is known to emulate various devices with EOPs. See the Acorn RISC OS and MSX pages.

Whether these emulators support operating systems for these computers is unknown; it must be looked into further. PCs without meaningful OSes are not included.

Acorn RISC series – ArcEM 1.50

https://sourceforge.net/projects/arcem/files/arcem/1.50/

Amstrad CPC – Arnold, SDLMESS, A-CPC, Ami-CPC, Emu-CPC, CPE

https://www.cpcwiki.eu/index.php/Emulators#AmigaOS

Commodore 64/128 – VICE, Frodo

https://vice-emu.sourceforge.io/index.html#download https://frodo.cebix.net/

Commodore PETs – VICE

https://vice-emu.sourceforge.io/index.html#download

Commodore Plus/4 – VICE

https://vice-emu.sourceforge.io/index.html#download

Commodore VIC-80 – VICE

https://vice-emu.sourceforge.io/index.html#download

CHIP-8 – Vision-8

http://www.komkon.org/~dekogel/vision8.html

Megazeux GCS – Megazeux (has CHIP-8!)

http://aminet.net/package/game/misc/pfp-mgzx https://www.digitalmzx.com/forums/index.php?showtopic=9709

MSXs – fMSX

https://web.archive.org/web/19990915190321/http://www.xs4all.nl/~roderick/fmsx/