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15D042BL03

Category: no classification
Flags: available only in real or V86 mode

INT 15 - Intel Pentium Pro BIOS UPDATE - READ BIOS UPDATE AREA

	AX = D042h
	BL = 03h
	ES:DI -> buffer for microcode update block (see #00533)
	ECX = two real-mode 64K scratchpad segments (upper and lower words)
	DX = segment of 64K scratchpad area for BIOS use
	SI = zero-based index number of update block to retrieve
Return: CF clear if successful
	CF set on error
	AH = status
	    00h successful
		ES:DI buffer filled with 2048-byte update block
	    86h not implemented
	AL = OEM error (if AH is not 00h or 86h, otherwise undefined)
	    00h successful
Program: the Pentium Pro BIOS update allows the system BIOS or other software
	  to install a microcode patch into the Pentium Pro processor
Notes:	this API must be called from actual real mode, not V86 mode
	at least 32K stack space must be available when this function is called
SeeAlso: AX=D042h/BL=00h,AX=D042h/BL=01h,AX=D042h/BL=03h

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