[48217] in North American Network Operators' Group
Re: Routers vs. PC's for routing - was list problems?
daemon@ATHENA.MIT.EDU (Kevin Day)
Sat May 25 00:24:48 2002
From: Kevin Day <toasty@shell.dragondata.com>
Message-Id: <200205232133.g4NLXTq69515@shell.dragondata.com>
To: sjsobol@JustThe.net (Steven J. Sobol)
Date: Thu, 23 May 2002 16:33:29 -0500 (CDT)
Cc: eddy+public+spam@noc.everquick.net (E.B. Dreger),
vinny@tellurian.com (Vinny Abello), nanog@merit.edu
In-Reply-To: <Pine.LNX.4.41.0205231722131.1721-100000@amethyst.nstc.com> from "Steven J. Sobol" at May 23, 2002 05:23:43 PM
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Errors-To: owner-nanog-outgoing@merit.edu
>
>
> On Thu, 23 May 2002, E.B. Dreger wrote:
>
> > EIDE-based flash drives have become very inexpensive. Some
> > embedded systems use CompactFlash boards.
>
> Can you set flash drives to be write-only? Sorry if this is a basic
> question, but the only EIDE mass-storage devices I've used are more
> traditional drives.
Write only? Sure, that's been around since at least 1972!
http://www.ganssle.com/misc/wom1.jpg
http://www.ganssle.com/misc/wom2.jpg
</smartassmode> :)
If you mean READ only, some of Sandisk's products (not their normal consumer
grade Compact Flash disks) have a read only mode. Some of which even have a
mode where you can blow a fuse inside the chip with a special instruction,
and make it read-only forever.
Someone else made a solid state flash based IDE compatible drive, too, that
had an option for "write once" per sector (yet could be all blanked using
another special command). I know they wrote a module for OS9 to support it
using its native filesystem (most FS's don't like being unable to write to
whatever they want, whenever they want). It may have been Atmel.
-- Kevin
