INT FE - ATIBM PC AT/XT286IBM PC XT/286/PS50+IBM PS/2 Models 50,60,70,80 - destroyed by return from protected mode
Note:	the ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. uses 0030h:0100h as the initial stack on startup, which
	  is the last fourth of the interrupt vector table.  If the processor
	  is returned to real mode via a hardware reset (the only possibility
	  on an 80286, though there are a number of ways of generating one),
	  then the BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. startup code stacks three words on its scratch stack
	  before determining that a return to real mode has been requested.
	  As a result, INT FE and INT FF are corrupted.
SeeAlso: INT FF"XT286IBM PC XT/286"