Category: <b>BIOS</b>
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<pre><b>INT 15 - SYSTEM - SWITCH TO PROTECTED MODE</b>

	AH = 89h
	BL = interrupt number of IRQ0 (IRQ1-7 use next 7 interrupts)
	BH = interrupt number of IRQ8 (IRQ9-F use next 7 interrupts)
	ES:SI -&gt; GDT for protected mode (see <a href=../../it/00/5.html>#00500</a>)
Return: CF set on error
	   AH = FFh  error enabling address line 20
	CF clear if successful
	   AH = 00h
	   in protected mode at specified address
	   BP may be destroyed; all segment registers change
Notes:	BL and BH must be multiples of 8
	the protected-mode CS must reference the same memory as the CS this
	  function is called from because execution continues with the address
	  following the interrupt call
SeeAlso: AH=87h,AH=88h,INT 67/AX=DE0Ch

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