Message-Id: <199704151102.NAA28304@math.amu.edu.pl>
Comments: Authenticated sender is <grendel AT ananke DOT amu DOT edu DOT pl>
From: "Mark Habersack" <grendel AT hoth DOT amu DOT edu DOT pl>
Organization: PPP (Pesticide Powered Pumpkins)
To: Matthias DOT Paul AT post DOT rwth-aachen DOT de
Date: Tue, 15 Apr 1997 13:02:46 +0100
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Subject: Re: Usage of directory entries 
Reply-to: grendel AT hoth DOT amu DOT edu DOT pl
CC: opendos-developer AT delorie DOT com
In-reply-to: <F6FCDC0C07@ibh.rwth-aachen.de>

Once upon a time (on 14 Apr 97 at 19:01) Matthias Paul said:

> Hi!
> 
> To introduce better compatibility with FAT partitions also used 
> by Windows95 with it's LFN-support, we'd need to improve some of 
> the OpenDOS' utilities in this respect.  For a start, I have 
> merged an overview of the usage of directory entries by the 
> various 'DOS' systems.  Using some more 'intelligent' algorithms 
> also decoding the context of an entry, it should be possible to 
It is possible to tell the LFN from SFN entry by just looking at the starting 
cluster field which in LFN is always zero. To confirm we're dealing with LFN 
it is also possible to check the attributes of an entry: 0xFF for LFN.

> decide LFN-entries from normal directory entries, while still 
> maintaining compatibility with "DR DOS"-features, which use the 
> same entries, but in a different context.  However, for full 
> LFN-support we should better slightly modify the usage of these 
> structures...
I've just started to write a TSR to provide LFN support. As soon as it has 
some shape, I will make it available for all to review and improve.

> FYI:
[snip]
>    proved.
> 
>    More detailed info on the usage of these structures can be found in
>    NWDOSTIP.TXT (from my MPDOSTIP.ZIP) and in Ralf Brown's interrupt
>    list INTER53+.
Great info! Thanx!

> Bye,
> 
>  Matthias
P.S. Could you send me MPDOSTIP.ZIP by email? I was unable to ftpsearch it 
anywhere??
==================================================
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