Undocumented DOS Through C

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.