Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!proto!joe From: joe@proto.COM (Joe Huffman) Newsgroups: comp.os.msdos.programmer Subject: Enableing A20 line. Keywords: Extended memory, protected mode. Message-ID: <1429@proto.COM> Date: 9 Sep 90 04:31:31 GMT Organization: Prototronics; Sandpoint, Idaho Lines: 10 On many (all?) PC's the A20 line is disabled for compatibility with some software that requires address wrap around. So when entering protected mode and it is desired to gain access to extended memory the A20 line must be enabled. How is this actually done? Code someone either post or mail me a code fragment or explain how this is done? Thanks. -- joe@proto.com FAX: 208-263-8772