Re: [Fwd: Look for Disk-On-Chip Driver]

David Woodhouse (David.Woodhouse@mvhi.com)
Mon, 04 Jan 1999 10:41:04 +0000

hedrick@Astro.Dyer.Vanderbilt.Edu said:
> On Thu, 31 Dec 1998, Michael Liao wrote:
> > I have installed Disk-On-Chip(DOC2000) on my PC, but unfortunately, My
> > Linux box can recognize it, where can I find the driver for it.
>
> First try passing the idex= and hdx= parameters to the kernel. If this
> works then you know the ide-driver will at least attempt to work with
> your new toy.

Nope, it doesn't fake IDE. It's a bit like EMM - it lives in upper memory, and
you page in a 8K or 4K chunk of the flash at a time.

In the first page there's a BIOS extension which adds an INT 13h handler to
drive it, and the driver always leaves the thing with the first page mapped
in, in case you reboot suddenly.

I knocked up a driver for something similar once. Take a look on
ftp.yggdrasil.com in the mirror of dwmw2.robinson.cam.ac.uk. It's called
mtd-98xxxx.tar.gz - You'll need to play with it a bit, and it's only a module
so far, but it should give you enough to go on.

---- ---- ----
David Woodhouse David.Woodhouse@mvhi.com Office: (+44) 1223 810302
Project Leader, Process Information Systems Mobile: (+44) 976 658355
Axiom (Cambridge) Ltd., Swaffham Bulbeck, Cambridge, CB5 0NA, UK.
finger dwmw2@ferret.lmh.ox.ac.uk for PGP key.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/