INT 60 u - HP 95LX System Manager - CHECK FOR EVENT                             
	DI = 0101h
	STACK:	2 WORDs unused dummies (for calls from high level languages)
		DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address. pointer to event record (INT 60/DI=0100h)
Return: event record filled
	STACK unchanged
Note:	this call returns immediately if no event is available
SeeAlso: INT 60/DI=0100h