Is your feature request related to a problem? Please describe.
No, it isn't.

Describe the solution you'd like
86Box emulates a great variety of machines, and this can be expanded further more on by adding the the Compaq Portable 486, to allow for emulation under 86Box.

Describe alternatives you've considered
None. I can't find an emulator that can emulate this specific machine, which could make 86Box one of the first emulators to emulate this very machine.

Additional context
Nothing that I can put here.