Re: Arcom Control Systems SBC-MediaGX

From: Lee Mitchell (lee@spamtastic.demon.co.uk)
Date: Mon Apr 10 2000 - 14:33:52 EST


This is an extract from the users manual. I don't think its one of the Disk
on a chip modules, and in the picture in the brochure i cannot see a disk on
a chip module.

Does this sound like the sort of flash that is supported ???

I have to be sure before i go ahead, cos my boss (a bl*#dy accountant) will
have my head on a stick if i screw up !!!

--- snip ---
Datalight FlashFX Flash Filing System
The flash memory incorporated onto the SBC-MediaGX is configured as a
silicon read/write
disk drive. This disk is supported using Datalights FlashFX software. This
software is designed
to enable the disk to be accessed using standard DOS routines. The FlashFX
software is
installed during the POST process as a BIOS extension. This enables the
flash disk to be used
as a boot disk. This will be the default boot device if a hard disk drive is
not present in the
system. When shipped the flash memory will be formatted and configured as a
ROM-DOS
system disk.
The FlashFX software has been designed to incorporated wear levelling
algorithms. The wear
levelling ensures that the flash memory is used evenly and that no one
sector is continually
being written to. This enables the write performance of the flash device to
be maximised.
The support CD-ROM contains utilities which can be used to ensure that the
flash disk is
configured correctly (See the README file in the FlashFX section of the
support CD-ROM). If
the flash disk gets corrupted for any reason these utilities can be used to
reformat the flash.
The 'Bootdisk' provides an automatic mechanism for reformatting the flash
memory and
copying the ROM-DOS operating system.
--- snip ---

Lee Mitchell
www.spamtastic.demon.co.uk
lee@spamtastic.demon.co.uk
----- Original Message -----
From: David Woodhouse <dwmw2@infradead.org>
To: Lee Mitchell <lee@spamtastic.demon.co.uk>
Cc: Linux Kernel development list <linux-kernel@vger.rutgers.edu>
Sent: Monday, April 10, 2000 7:09 PM
Subject: Re: Arcom Control Systems SBC-MediaGX

>
> lee@spamtastic.demon.co.uk said:
> > I am particulaly interested in the usb support, and support for the
> > on board flash disk (comes with some sort of Datalight software).
>
> If it's a DiskOnChip, the situation is this:
>
> There are binary-only drivers available from the manufacturer. With these,
> you have the unhappy choice of either violating the GPL by distributing a
> kernel with them linked in, or putting up with the waste of using initrd
> and modules in your embedded system.
>
> There is also a GPL'd driver at www.linux-mtd.infradead.org, which works
> fine in read-only mode, but still isn't ready for production use in write
> mode, although I can't actually reproduce any of the problems which have
> been reported.
>
> If it's not a DiskOnChip, but onboard NOR flash, that ought to be
supported
> too, as soon as I work out how I've broken my FTL code :)
>
> If you want to know about drivers for the touchscreen, find out exactly
what
> it is and mail me the details.
>
>
> --
> dwmw2
>
>
>
> -
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