: Compatible with Windows NT through Windows 8.

If your goal is specifically to run (the Microchip assembler) on a non-Windows machine, you should: Wine - ArchWiki

(legacy, but includes full MPASM suite)

To download mpasmwin.exe (the Windows-based version of the MPASM assembler), the most reliable method is to install a legacy version of the MPLAB X IDE or the older MPLAB IDE v8.x , as Microchip no longer supports MPASM in newer releases. CircuitBread Top Ways to Get MPASM MPLAB X IDE v5.35 (Recommended)

Don’t download MPASMWIN.exe alone. Get the full MPLAB IDE v8.92 from Microchip. It’s the safest, most complete, and still fully functional solution for legacy PIC assembly work.