Hi!!

I've already have a look on the alfat, and don't know DosOnchip.
Those products are quite similar.
The only thing which hurt me is the longevity of those product.
What happen if those one's disapearred in one or two years?

That's another reason why I'm quite agree with Matt Pobursky. =

Here is an open project for FAT 16 on Pic (in french), but it's not
finished:
http://www.digitalspirit.org/wiki/projets/fatonpic
There is only a read mode, write mode is not finished

Matt> How much rom and ram do you need for this stuff on a PIC18? What was
you're PIC18 and wich frequency?

SamB

-----Message d'origine-----
De : piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] De la part de
Matt Pobursky
Envoy=E9 : dimanche 3 d=E9cembre 2006 17:03
=C0 : Microcontroller discussion list - Public.
Objet : Re: [PIC] Mass storage


On Sun, 03 Dec 2006 08:47:23 -0500, Victor Fraenckel wrote:
> Tomas,
>
> You might have a look at this:
>
> http://www.sparkfun.com/commerce/product_info.php?products_id=3D7955
>
> About the same price as the ALFAT unit.
>
> I,too, am looking for a mass storage device and I am looking at both =

> the ALFAT and the DOSonCHIP unit. I haven't yet decided which one to =

> try so I have no direct experience using either.
>
> HTH,
>
> Vic
>
>
> Tomas Larsson wrote:
>> Looking to implement a mass-storage device into my project. Found =

>> something called ALFAT at http://www.ghielectronics.com Anyone got =

>> any experience of this
>>

Another alternative (if you've got a PIC or other MPU with enough
resources) is including the hardware/software interface in your own hardware
design.

I've used this library before on several MPUs and it's a quality
product:

http://www.prllc.com/productcart/pc/viewCat_P.asp?idCategory=3D10

It's show as an AVR library [Dave VH ought to like that ;-)] but it's easily
ported to any MPU with the resources and a decent C compiler. I've ported it
successfully to the PIC18, MSP430, Rabbit and ARM families.

At about $30-40 a pop, the hardware based ALFAT or DOSonCHIP is probably
okay for a one-off but the fairly low cost and no-royalties of the PRLLC
library starts to look real good at just a few units volume. Hmmm, I just
checked the site and see they've raised the price to $199 since I purchased
the library a few years ago (I think I paid $139). That said, I'd still buy
it at $199 as it's very solid code, full featured and well documented.

Matt Pobursky
Maximum Performance Systems
 =


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