Int 21 Fn 1A - DOS 1+ - Set Disk Transfer Area Address [D] 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 See Also: AH=11h,AH=12h,AH=2Fh,AH=4Eh,AH=4Fh