INT 21 - DOS 1+ - SET DISK TRANSFER AREA ADDRESS AH = 1Ah DS:DX -> Disk Transfer Area (DTA) Notes: the DTA is set to PSP:0080h when a program is started under the FlashTek X-32 DOS extender, the pointer is in DS:EDX SeeAlso: AH=11h,AH=12h,AH=2Fh,AH=4Eh,AH=4Fh