Re: What services are NOT needed with EMC

[John Murphy <john-at-wyosip.com>]

Jailbait linux (jailbait.sourceforge.net) is a linux distro aimed at the
i-opener machines, (but you can boot it on other machines) that is
designed
to boot out of flash and not write back to the flash (all temporary
filesystems are in ram, to eliminate unnecessary flash writes).  They
fit
USB ethernet, sound, a reasonable complement of network facilities
(NFS, ftp, ssh, etc) along with X and netscape and VNCViewer in 16 mb of
flash, with
a bit left over.  

If you really need the space, this might be a thing to look at as a
starting
point.  I've gone that route, and the extra money for flash/ram is tiny 
when compared to the time it takes to customize/strip a distro to be
_really_ lean.

murph

Ray wrote:
> 
> (comments mixed in)
> 
> On Wed, 21 Feb 2001, Paul wrote:
> > Hi Ray
> >
> >  Have you been talking to Dan again <g>
> 
> Guilty.  And a couple of sbc makers.
> 
> > I had this discussion in the New Year, and have given it a casual look
> from > time to time since.
> > X windows and the window manager would be the largest part of any install. If
> > this part could be dumped in favour of a framebuffer drive and a small
> > dedicated GUI implimented - I would think  you could sqeeze it into less than
> > 32 Mb.
> 
> Right, 32Mb of rtlinux and the EMC - sans gui on a compact-flash.  And it
> would be a great black box with just a power cord, an ethernet connection,
> and with some of gecko's finest, molex connectors for each axis.
> 
> Of course you could make it just a netboot and have no hard storage.  128
> Mg 100 sdram is going for < $50 now.  Compact Flash is close to $100.
> 
> > Rtlinux is available on a single floppy, used in conjuction with nano-X
> and > FLTK, an embedded EMC is a very real possibility.
> 
> > Some usefull URLs:
> > http://linux-fbdev.org  for frame buffer drivers
> > http://www.microwindows.org for nano-X
> > http://www.fltk.org for fltk
> 
> Thanks for the links.  Anyone up for making one or two of these work and
> display them at NAMES.  I can build them here if I can get help with the
> software setup for it.  We could use an industrial sbc or a cheapo board.
> 
> I'd like to see the project details preserved as "open pages."  We could
> GPLD them and put them in a section on linuxcnc.org.
> 
> Ray
> 
> > Regards Paul.
> >
> >
> >
> >
> > On Wed, 21 Feb 2001, Ray wrote:
> > > I have been talking with some fellows who think that they can get it all
> > > into a 64 meg disk-on-chip or compact-flash.
> > >
> > > Once we get matching rpm's for rt and emc we will be able to install in a
> > > much smaller space 'cause we won't need the development stuff.  Like Paul,
> > > I'd keep a network handy and use it for part-program storage and such.