Re[1]: emc & rtlinux questions and suggestions

["Terry L. Ridder" <terrylr-at-blauedonau.com>]

hello;

actually, there are at least six different pieces
of software being merged to work together.

1. glibc (this is separate from gnu gcc)
2. gnu compiler
3. linux kernel (2.0.38, 2.2.x, 2.4.x)
4. rtlinux
5. emc
6. rcslib
7. moving from a 32 bit to 64 bit platform.

the dialemma is that rtlinux-2.2 does not support
the alpha platform. rtlinux-3.0-pre8 supports the
alpha platform. in order to use rtlinux-3.0-pre8
the linux kernel needs to be 2.4.0-test1. (that
is what the fsmlabs.com people keep saying.)
linux-2.4.0-test1 is not stable on the alpha platform,
linux-2.4.0-test9 has many changes in arch/alpha files
that improve the stability of the linux kernel on the
alpha platform.

i have yet to get either linux-2.4.0-test1 or
linux-2.4.0-test9 to work with rtlinux-3.0-pre8 on
the alpha platform. 

i have been in contact with the rtlinux people at
fsmlabs.com in an attempt to either obtain their
help or give them help. this has met with mixed
results. i have sent them several e-mails this
weekend and i am waiting on a reply from them.

a secondary dialemma is that once linux-2.4.0 is
released and new emc/rcslib users will be wanting
to run on the new linux kernel release. linux-2.4.0
includes usb and firewire support. it will not be
long before the used computer market starts seeing
computers with usb & firewire.

On Mon, 23 Oct 2000, Brian Pitt wrote:

brian> 
brian> Hi,
brian> this is an interesting delema and I can see where it could cause
brian> some problems any way you go with it
brian> 
brian> youre realy working with four diffrent projects that are only slightly
brian> related but get mearged in EMC ,using tools from a fifth-
brian> EMC,the Linux kernel,the realtime kernel extensions,the
brian> realtime control system library and the GNU compiler tools
brian> 
brian> as you are currently using a pre-release version of rtlinux
brian> I would talk to those guys to see if your changes can be
brian> folded into the final release of RTL-3 
brian> 
brian> and with work on the 2.2.x  kernels winding down to bugfixes
brian> it might be better to shoehorn the EMC code to work with
brian> the stock realtime kernel for those versions for now ,with
brian> the posibility if an EMC specific patch later if needed
brian> 
brian> I can apreciate all the work you have been putting into this
brian> dont wear yourself out ;-)
brian> 

-- 
Terry L. Ridder
Blue Danube Software (Blaue Donau Software)
"We do not write software, we compose it."

digging deep, i feel my conscience burn
i need to know who and what i am
this hunger jolts me from complacency
rocks me, makes me meet myself
----kendall payne---closer to myself---