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Re: Philips Velo 500 as a candidate for Linux/MIPS?

Subject: Re: Philips Velo 500 as a candidate for Linux/MIPS?
From: James Douma <>
Date: Thu, 13 Aug 1998 17:12:11 +0000
Organization: IVS, Inc
References: <>
The HPC's and Palm PC's being made today have CE in ROM.  Thats ROM, not
PROM. You can't remove it without a soldering iron, and it can't be
modified or updated.  There is, of course, the ability to run installed
applications in RAM after loading from other media - so getting Linux
working on them is not out of the question.  However, because the 8MB of
code space which is in ROM would not be available to another operating
system, Linux would have to run with much reduced resources compared to
the built-in CE OS.

There is probably not much chance of getting an off-the-shelf unit
without CE. These things are made in volume with little to no variation.

It would be a neat hardware hack to remove the ROMs and substitute them
with parts containing Linux, though you'd have to do embedded - style
development with long iteration cycles to get it working.


Jesus Eugenio Sanchez wrote:
> Maybe I'm asking *very* stupid questions, but...
> Would it possible to get these machines *without* an OS
> installed? BTW, if you have the developments tools from
> Microsoft to cross-compile, how do you upload the app
> into the gadget?
> -----Original Message-----
> From: Warner Losh []
> Sent: Wednesday, August 12, 1998 3:59 PM
> To:
> Subject: Re: Philips Velo 500 as a candidate for Linux/MIPS?
> In message
> <> Petr
> Novak writes:
> : I was wondering wheather somebody has considered to port Linux onto
> this
> : box. With a bit of luck, it might even run X one day...
> I've started looking into the Nec Vr4111 + Vrc4171 combination which
> appears in many of the PalmTop machines.  Namely the Caseo Casiopea
> E-10 and something made by Everex.  Getting docs on these from NEC was
> rather an easy thing to do.  These are in the $300-$400 range,
> depending on memory and options.  NEC also makes a handheld in the
> $900 range based on these chips.
> Do you have a number at Philips that I can get info on these chips?
> Got the exact chip numbers, which seems to help?
> I'd love to see some way to run Linux or some other free OS on the CE
> machines.  However, I've stated before that I'm not sure how to go
> about writing a boot loader, putting WinCE back should the kenrel
> build be bad, etc.  I'd love to see a discussion about how to go about
> this.
> Warner

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