Why not use AMIS (INT 2Dh)? It's there for the very reason you're proposing. However, it's much more involved than your simple test, but also provides many, many additional features and allows simple communication, interaction, and even cooperation between all TSRs and Device Drivers that support it.
_______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel