Category: <b>no classification</b>
<br>Flags: available only in real or V86 mode<p>
<pre><b>INT 15 - Intel Pentium Pro BIOS UPDATE - WRITE BIOS UPDATE AREA</b>

	AX = D042h
	BL = 01h
	ES:DI -&gt; microcode update block (see <a href=../../it/33/5.html>#00533</a>)
	CX,DX,SI = segments of three 64K scratchpad areas for BIOS use
Return: CF clear if successful
	CF set on error
	AH = status (see <a href=../../it/32/5.html>#00532</a>)
	AL = OEM error (if AH is not 00h or 86h, otherwise undefined)
	    00h successful
Notes:	a microcode update may also be initiated by a WRMSR instruction
	  with ECX=0079h, EDX=00000000h, and EAX=linear address of update
	  block (see <a href=../../it/33/5.html>#00533</a>)
	at least 32K stack space must be available when this function is called
SeeAlso: AX=D042h/BL=00h,AX=D042h/BL=02h,AX=D042h/BL=03h,MSR 00000079h

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