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Date:      Tue, 9 Jan 1996 09:33:16 -0800 (PST)
From:      Neil Bradley <root@synthcom.com>
To:        Robert Nordier <rnordier@iafrica.com>
Cc:        hackers@freebsd.org
Subject:   Re: DOS File system fixes
Message-ID:  <Pine.BSD.3.91.960109092835.8172C-100000@synthcom.com>
In-Reply-To: <199601091029.MAA01438@eac.iafrica.com>

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On Tue, 9 Jan 1996, Robert Nordier wrote:

> On Tue, 9 Jan 1996, Neil Bradley wrote:
> > It would be heinous to support something like DBLSPACE. ;-)
> Actually, though, I feel that if we can't support the msdosfs _as_it_is_
> used_, then we aren't living up to "FreeBSD is better" and the msdosfs
> support is more something to look good on the features list than an
> actual benefit. I know one of the big gripes about one of the OS/2 WARP
> releases was that it didn't want to have anything to do with compressed
> drives. DBLSPACE should be in there somewhere (though admittedly not a top

The problem is that the technology used by DLBSPACE (read that, the 
compression algorithm) is patented, and at least I'm not up to reverse 
engineering a compression algorithm.

> > Something like INT 14h could be simulated very easily with IOCTL calls to 
> > the sio's.
> The 0x14 stuff (serial I/O) is pretty brain-dead. I can't see anyone
> happily running SLIP/PPP at 1200 bps.... :-)

I just threw that out there as an example - we could provide an interrupt 
interface behind the INT 14h lines, much like the FOSSIL drivers in 
Fidonet did (remember that "network"?). 

> Seriously, though, I think the BIOS support needs to be very specific
> rather than general, and only as a last resort for "DOS-specific"
> hardware.

By doing that we potentially eliminate a lot of functionality. We should 
probably tackle THAT mountain when we come to it ;-).

-->Neil

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