Menu
Home
People
Places
Arts
History
Plants & Animals
Science
Life & Culture
Technology
Reference.org
Execute Direct Access Program
open-in-new
<p>In <a href="/facts/IBM_mainframe/0kPkgADx">IBM mainframe</a> <a href="/facts/Operating_system/8XTuvMh2">operating systems</a>, Execute Direct Access Program (XDAP) is a pseudo access method for accessing direct access datasets on a block by block basis. XDAP is more specifically described in the OS System Programmer's Guide. </p>