INT 0B - HP 95LX - LOW-LEVEL KEYBOARD HANDLER

Desc:	this is the lowest-level keyboard handler on an HP 95LX palmtop
Note:	debounces key, places the keycode in I/O register 60h, and calls INT 09
SeeAlso: INT 09,INT 0D"HP 95LX",INT 15/AX=4DD4h