INT 2F - PC-DOS Econet v1.05 - ADD EVENT HANDLER AX = C503h DS:DX -> event handler (see #03046) Return: AX = return code (see #03037) Note: the interrupt-enable state will be preserved, but interrupts may be enabled during processing of this function SeeAlso: AX=C500h,AX=C504h,AX=C505h,AX=C508h