INT 16 U - PCIBM PC Tools v7+ DESKTOP - OPEN \DESK.OVL FILE AND SEEK TO OVERLAY AX = FF98h DX = byte offset in file of overlay header (see #00619) Return: BX = file handle for DESK.OVL file Desc: open the DESK.OVL file, seek to the specified offset, read in the overlay header, and seek to the offset specified by the header Format of PCIBM PC Tools DESKTOP overlay header: Offset Size Description (Table 00619) 00h 12 BYTEs NUL-padded ASCII overlay filename 0Ch DWORDDoubleword; four bytes. Commonly used to hold a 32-bit segment:offset or selector:offset address. offset within DESK.OVL file of actual overlay