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go to zophar.net find a dos version.
ZSNES was my emulator of choice for MANY years back when DOS was still a thing, even though I think I've always used the Windows versions. As far as I can tell, the DOS version is still "up to date", too:
I thought there was a DOS build of SNES9x (which is my current SNES emulator of choice) but a quick search didn't turn up any recent download links.