This chapter of the documentation describe the GO32 unit for the Free Pascal compiler under DOS. It was donated by Thomas Schatzl (tom__at__work@geocities.com), for which my thanks. This unit was first written for DOS by Florian Kl”ampfl. This chapter is divided in four sections. The first two sections are an introduction to the GO32 unit. The third section lists the pre-defined constants, types and variables. The last section describes the functions which appear in the interface part of the GO32 unit.