This book takes you into the exciting world of Terminate and stay Resident Programs. A world which most DOS programmers don’t dare to test their strengths with .

• From the first toddling steps to the professional TSRs, this book has everything.
• It contains an indepth coverage of  advanced topics like Swappable Data Area, Pop up TSRs ,TSRs & Development of TSRs Engine ,Vaccines & Viruses TSRifying existing utilities etc.
• More than Lines of source code and a direct and lucid approach distinguishes this book from others.
• After reading this book ,you will have a proficiency in writing TSRs that you never imagined possible.