Compatibility: 1.0+
Expects: AH    1aH
DS:DX address for the DTA
                                                                  
Returns: none
                                                                  
Info: This sets the Disk Transfer Address for use in subsequent DOS
function calls.

Notes:   All FCB-type file accesses take place at the DTA

  File-finding fns 11H, 12H, 4eH and 4fH place data into the DTA

  The DTA is global, so be careful when setting it in a recursive
or re-entrant procedure or when acting as a TSR

  When a program is started, its DTA is at offset 80H in the PSP.
Be wary of operations which will put more than 128 bytes in the
DTA since that would transfer data over top of whatever follows
the PSP in memory.

See Also: Fn 2Fh Get DTA
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DOS Fn 1aH: Set Disk Transfer Address (DTA)