Int FE  - At/xt286/ps50+ - Destroyed By Return From Protected Mode         [B]


Note:  the ROM BIOS 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 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.

See Also: INT FF"XT286"