On Sat, 2002-06-29 at 08:34, Mike Noyes wrote:
> On Sat, 2002-06-29 at 06:15, Manfred Schuler wrote:
> > one reason for software write protection is that people using flash/hard
> > disk at the moment have no other possibilities. And even if it is not
> > perfect, it is better than nothing.

Manfred,
I forgot to mention SCSI as a solution for hard drives. SCSI drives have
had the ability to do hardware write-protect for many years.

> Manfred,
> There are alternatives to software write-protect. Current generation
> flash disks are capable of hardware write-protect. They use two
> different approaches:
> 
>     * Custom ATA controllers on the IDE compatible flash disk.
>     ATA-Disk Module
>     http://www.sst.com/products/58sm_lm.html
>     ATA-Disk Chip Application Notes
>     http://www.sst.com/superflash/pdf/222.pdf
>     ATA-Disk Module Product Brief
>     http://www.sst.com/ata_disk/admbrief.pdf
>     ATA-Disk Module (Apacer)
>     http://www.apacer.com/product/flash/index_adc_adm.html
> 
>     * A software and hardware combination that changes the write state
>     of the flash disk in hardware.
>     Secure Disk on Module (SDOM)
>     http://www.pqi.com.tw/eng/ourproduct/sdom.htm

-- 
Mike Noyes <[EMAIL PROTECTED]>
http://sourceforge.net/users/mhnoyes/
http://leaf-project.org/



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