At 06:39 AM 30-04-99 -0600, you wrote:
>
>It's quite possible. I've been thinking of using the pentium 4M ptes for
>a rtl address space.
What is the "ptes" area? I'm getting the latest INTEL CD. I hope it will
give me the information required to understand how the computer works.
The idea to look at Linux has thrown me on a steep learning curve. Is the
CD the best source of information?
>
>As for whether it will be commercial without memory protection, those "folks"
>might want to examine VxWorks.
I'm jumping in the Linux bandwagon because Linux has become a serious
alternative to NT and is recognised as such - market recognition is important.
The other alternative for us is QNX which has little market recognition.
WSJ and BW never talk about QNX, plenty of articles are written on Linux.
Market recognition does not mean that Linux is better that QNX from a
technical point of view, but it does mean a prospective customer will more
readily accept a Linux solution.
Much progress has been made here on RTLinux since january:
. QNX like send/receive/reply primitives can be implemented with
equivalent if not better performance :)
. Writing interrupt handlers is a snap. My "custom" arcnet card woke up
yesterday capturing QNX messages :)
. Modules can be written in C++ i.e. more structure, more debugging at
compile time :)
There is a real need out there for a user friendly tool to implement
control strategies on the factory floor. Some companies have done it in a
miserable
way. Often the final product reflects "the way the programmers think it
should be done" rather than "the way the user would like to do it".
Whatever, we're talking about a complex tool that generates a rtl_xyz
module from the mouse clicks of the user in a KDE application.
Now, you will agree that rtl_xyz is probably not as "safe" as the rtl core
(rtl_sched, rtl_fifo, rtl_ipc and rtl_my_tested_modules). That's why I
bring the issue of memory management up.
Regards
_______________________________________________________
Pierre Cloutier
Tel: (450)-659-9186
Fax: (450)-659-0014
POSEIDON CONTROLS INC
_______________________________________________________
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