Rockbox mail archive
Subject: Re: What happened to the SDK for Dadio? (hipzip hacking anyone?)
From: Joseph Jones (joe_at_bumpycarrot.cjb.net)
I don't think the I-Jam or HipZip are realistic port targets. I don't
think Pocket Zip disks were all that popular, and I-Jam couldn't seem to
be able to make their mind up on whether they wanted to use MMC cards or
CF in their players.
Not to mention that these players are so old that the I-Jam and iObject
websites don't even exist anymore :( As for Dadio SDK, I got very few
hits on google when I searched for it (two pages). I did however find
the eCos kernel by RedHat. Turns out that Dadio is not Linux. It's based
on Redhat's own eCos kernel, which is open source... So unless RedHat
had a seperate license for Interactive Objects, Dadio should be open
source as well. But I find it quite likely that they did have a seperate
license, since the eCos kernel doesn't appear to support any Pocket Zip
> First off, thanks for the web site resource - don't know where I would
> have gotten the specifications for the ISD200 ATA/USB chip otherwise.
> Off to some fun stuff...
> When I realized the HipZip used the same ATA/USB controller as the
> RockBox I started wondering if the HipZip (a "defunked" mp3 player -
> mostly because it had limited removable storage **) could control large
> compact flash cards or even a hard drive.
> From inspection of the circuit... it looks like it could. But there
> is always the problem that the embedded firmware (Dadio, a Linux
> derivative I believe) is hard coded at 40MBytes.
> So I am looking, after finding some internet chatter about it, for the
> Dadio SDK. So far it looks like it was talked about around March of
> 2000 but never released.
> The Dadio / Linux firmware was supposed to be used on the HipZip and the
> I-Jam mp3 players. I don't know if either of these are still on the
> market. One encouraging note, the I-Jam players appear to use compact
> flash cards!
> **HipZip players used a small (about a inch wide) 40MByte removable
> disk. At $10 each, it wasn't long until flash cards passed them up in
> terms of Bytes per dollars. Add to that, I have personally destroyed at
> least 3 disks of my own (i.e. Don't stare at them to long or they will
> fall apart).
Page was last modified "Jan 10 2012" The Rockbox Crew