Description Knowing about undocumented features of DOS allows programmers to dramatically speed up the execution time of their programs.Undocumented DOS through C reveals the undocumented or difficult to –find features o critical MS- DOS data structures in MS.DOS explained in detail,followed by C source code for putting this knowledge to use. This book includes : - Detailed coverage of List .Job File Table,Arena Headers ,CDs and DPB . -Tracing and manipulating the DPB,Buffer and the Device chains. -Memory organisation o DOS including Upper Memory Blocks and DOS subsegments. -Writing TSRs using swappable Data Area. -Installing /Deinstalling TSRs -An independent chapter on putting Undocumented DOS to real life use.