INT 60 u - HP 95LX System Manager - WAIT FOR EVENT
        DI = 0100h
        STACK:  2 WORDs unused dummies (for calls from high level languages)
                DWORD   pointer to event record (see below)
Return: event record filled
        STACK unchanged
Note:   this call will timeout after about 500ms
SeeAlso: INT 15/AX=4DD4h,INT 60/DI=0101h,INT 61"HP 95LX",INT 62"HP 95LX"

Values for event type:
 00h    no events
 01h    keystroke available
 02h    Ctrl-Break
 03h    reactivation (always follows deactivation event)
 04h    about to deactivate (sleep)
        next get-event call will not return until reactivated
 05h    forced application termination
 06h    1-2-3 bridge service request (only given to 1-2-3)
 07h    request to grow
 08h    request to shrink
 09h    application's alarm expired
 0Ah    daily chance to set an alarm
 0Bh    system date or time has been changed

Format of event record:
Offset  Size    Description
 00h    WORD    event type (see above)
 02h    WORD    ASCII code page 850 translation of keystroke
                or grow/shrink amount in paragraphs or 0000h if error
                or alarm expiration data
 04h    BYTE    scan code from BIOS
 05h    BYTE    shift key states at time keystroke is retrieved
 06h    WORD    LICS translation of keystroke
 08h    BYTE    function key number (1-2-3 only)
 09h    DWORD   pointer to 1-2-3 bridge record (see INT 60/DI=0104h)
                or pointer to time change structure (see below)
Note:   if the System Manager is awaiting the conclusion of a bridge service
          or grow/shrink call and the event type field is set to FFFFh on
          entry, the SysMgr will resume

Format of time change structure:
Offset  Size    Description
 00h    WORD    old year
 02h    BYTE    old month
 03h    BYTE    old date
 04h    BYTE    old day
 05h    BYTE    old hour
 06h    BYTE    old minute
 07h    BYTE    old second
 08h    BYTE    old hundredth of a second
 09h  9 BYTEs   new time in same format as old time

.