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From: Toan Le manh <lemanhtoantb@gmail.com>
Date: Wed, 14 Mar 2018 14:51:41 +0700
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Subject: Intel Reference Board doesn't work after inserting INT 15h/86h into Flat32.asm
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Hello everyone,

I have an Intel Reference Board. I was trying to force BIOS to wait 1
second in SEC phase.
I inserted these assemble code (BIOS wait function) into very first of
ProtectedModeEntryPoint in Flat32.asm file:

  MOV     CX, 0FH
  MOV     DX, 4240H
  MOV     AH, 86H
  INT     15H

Then, the board stopped working. Status code showed "00".
Even when I re-flashed its original BIOS, it's still not worked.

Could anyone please help me to figure out what's happen here? And how to
fix it?
I  appreciate your helps.

Thanks & BRs,
Toan