We couldn’t find any functional emulators for the Entex Adventure Vision system for PC, Mac, or Linux.
The Entex Adventure Vision was a short-lived handheld console released in 1982, and there are not many emulators available for it, especially for modern operating systems.
However, if you are still interested in playing games for the Entex Adventure Vision, you may be able to find some original hardware on online auction sites or retro game stores.