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From: Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Adding 64-bit file support to DJGPP
Date: Wed, 18 Jan 2006 08:11:25 CST
Organization: Rice University, Houston, TX
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> The LFN API in MS-DOS 7.0 and higher already uses 64-bit file
> operations in some functions, e.g. 714E/4Fh of Int 21h. Also, DOS is
> still evolving, so newer DOS versions provide functions that old
> versions lack.

The unreleased, in limbo development tree v2.04 in cvs contains some 
support for the larger file offsets.  You could investigate and 
contribute support.

> For the moment, I would like to put the question of API support in the
> OSes aside and concentrate on the implementation of 64-bit file support
> in DJGPP itself.

A review of what's been done already would be a good starting point.