INT 13 - Bootable CD-ROM - INITIATE DISK EMULATION                              
	AH = 4Ah
	AL = 00h
	DS:SI -> specification packet (see #00281)
Return: CF clear if successful
	CF set on error (drive will not be in emulation mode)
	AX = return codes
SeeAlso: AH=48h,AX=4B00h,AH=4Ch,AH=4Dh


Format of Bootable CD-ROM Specification Packet:
Offset	Size	Description	(Table 00281)
 00h	BYTE	size of packet in bytes (13h)
 01h	BYTE	boot media type (see #00282)
 02h	BYTE	drive number
		00h floppy image
		80h bootable hard disk
		81h-FFh nonbootable or no emulation
 03h	BYTE	CD-ROM controller number
 04h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	Logical Block Address of disk image to emulate
 08h	WORD	device specification (see also #00282)
		(IDE(Integrated Drive Electronics) A type of disk drive interface which essentially extends the PCIBM PC's expansion bus all the way to the drive and places the drive controller on the disk drive itself.	 See also ESDI.) bit 0: drive is slave instead of master
		(SCSI(Small Computer Systems Interface) A system-independent expansion bus typically used to connect hard disks, tape drives, and CD-ROMs to a computer.	A host adapter connects the SCSI bus to the computer's own bus.  See also ESDI, IDE.)	bits 7-0: LUN and PUN
			bits 15-8: bus number
 0Ah	WORD	segment of 3K buffer for caching CD-ROM reads
 0Ch	WORD	load segment for initial boot image
		if 0000h, load at segment 07C0h
 0Eh	WORD	number of 512-byte virtual sectors to load
		(only valid for AH=4Ch)
 10h	BYTE	low byte of cylinder count (for INT 13/AH=08h)
 11h	BYTE	sector count, high bits of cylinder count (for INT 13/AH=08h)
 12h	BYTE	head count (for INT 13/AH=08h)
SeeAlso: #00283,AH=08h


Bitfields for Bootable CD-ROM boot media type:
Bit(s)	Description	(Table 00282)
 3-0	media type
	0000 no emulation
	0001 1.2M diskette
	0010 1.44M diskette
	0011 2.88M diskette
	0100 hard disk (drive C:)
	other reserved
 5-4	reserved (0)
 6	image contains ATAPI driver
 7	image contains SCSI(Small Computer Systems Interface) A system-independent expansion bus typically used to connect hard disks, tape drives, and CD-ROMs to a computer.	A host adapter connects the SCSI bus to the computer's own bus.  See also ESDI, IDE. driver(s)
SeeAlso: #00281