INT 2F - CD-ROM - ABSOLUTE DISK WRITE                                           
	AX = 1509h
	ES:BX -> buffer
	CX = drive number (0=A:)
	SI:DI = starting sector number
	DX = number of sectors to write
Note:	corresponds to INT 26h and is currently reserved and nonfunctional,
	  but could be implemented for CD-R and CD-RW drives
SeeAlso: AX=1508h