To use MPASMWINEXE from any command prompt:
Microchip no longer distributes mpasm.exe separately; mpasmwin.exe has replaced it for all modern use cases. A common point of confusion is that even though mpasmwin.exe has a windowed interface, it can still be driven entirely from the command line. As one forum user correctly notes, “There is no more MPASM.EXE. The MPASMWIN.exe can be used instead – see the Command Line Interface chapter in MPASM Help”. This means that developers who prefer command‑line workflows are not forced to use a GUI. mpasmwinexe download best